--- /dev/null
+{***********************************************************
+glBitmap by Steffen Xonna aka Lossy eX (2003-2008)
+http://www.opengl24.de/index.php?cat=header&file=glbitmap
+------------------------------------------------------------
+The contents of this file are used with permission, subject to
+the Mozilla Public License Version 1.1 (the "License"); you may
+not use this file except in compliance with the License. You may
+obtain a copy of the License at
+http://www.mozilla.org/MPL/MPL-1.1.html
+------------------------------------------------------------
+Version 2.0.3
+------------------------------------------------------------
+History
+21-03-2010
+- The define GLB_DELPHI dosn't check versions anymore. If you say you are using delphi
+ then it's your problem if that isn't true. This prevents the unit for incompatibility
+ with newer versions of Delphi.
+- Problems with D2009+ resolved (Thanks noeska and all i forgot)
+- GetPixel isn't set if you are loading textures inside the constructor (Thanks Wilson)
+10-08-2008
+- AddAlphaFromglBitmap used the custom pointer instead the imagedatapointer (Thanks Wilson)
+- Additional Datapointer for functioninterface now has the name CustomData
+24-07-2008
+- AssigneAlphaToBitmap overwrites his own palette (Thanks Wilson)
+- If you load an texture from an file the property Filename will be set to the name of the file
+- Three new properties to attach custom data to the Texture objects
+ - CustomName (free for use string)
+ - CustomNameW (free for use widestring)
+ - CustomDataPointer (free for use pointer to attach other objects or complex structures)
+27-05-2008
+- RLE TGAs loaded much faster
+26-05-2008
+- fixed some problem with reading RLE TGAs.
+21-05-2008
+- function clone now only copys data if it's assigned and now it also copies the ID
+- it seems that lazarus dont like comments in comments.
+01-05-2008
+- It's possible to set the id of the texture
+- define GLB_NO_NATIVE_GL deactivated by default
+27-04-2008
+- Now supports the following libraries
+ - SDL and SDL_image
+ - libPNG
+ - libJPEG
+- Linux compatibillity via free pascal compatibility (delphi sources optional)
+- BMPs now loaded manuel
+- Large restructuring
+- Property DataPtr now has the name Data
+- Functions are more flexible between RGB(A) and BGR(A). RGB can be saved as Bitmap and will be saved as BGR
+- Unused Depth removed
+- Function FreeData to freeing image data added
+24-10-2007
+- ImageID flag of TGAs was ignored. (Thanks Zwoetzen)
+15-11-2006
+- Function SetBorderColor implemented (only used by opengl if wrap is set to GL_CLAMP_TO_BORDER)
+- Function AddAlphaFromValue implemented to use an fixed Value as Alphachannel
+- Function ReadOpenGLExtension is now only intern
+29-06-2006
+- pngimage now disabled by default like all other versions.
+26-06-2006
+- Setting up an anisotropic filter of 0 isnt allowed by nvidia (Thanks Ogridi)
+22-06-2006
+- Fixed some Problem with Delphi 5
+- Now uses the newest version of pngimage. Makes saving pngs much easier.
+22-03-2006
+- Property IsCompressed and Size removed. Not really supported by Spec (Thanks Ogridi)
+09-03-2006
+- Internal Format ifDepth8 added
+- function GrabScreen now supports all uncompressed formats
+31-01-2006
+- AddAlphaFromglBitmap implemented
+29-12-2005
+- LoadFromResource and LoadFromResourceId now needs an Instance and an ResourceType (for ID)
+28-12-2005
+- Width, Height and Depth internal changed to TglBitmapPixelPosition.
+ property Width, Height, Depth are still existing and new property Dimension are avail
+11-12-2005
+- Added native OpenGL Support. Breaking the dglOpenGL "barrier".
+19-10-2005
+- Added function GrabScreen to class TglBitmap2D
+18-10-2005
+- Added support to Save images
+- Added function Clone to Clone Instance
+11-10-2005
+- Functions now works with Cardinals for each channel. Up to 32 Bits per channel.
+ Usefull for Future
+- Several speed optimizations
+09-10-2005
+- Internal structure change. Loading of TGA, PNG and DDS improved.
+ Data, format and size will now set directly with SetDataPtr.
+- AddFunc now works with all Types of Images and Formats
+- Some Funtions moved to Baseclass TglBitmap
+06-10-2005
+- Added Support to decompress DXT3 and DXT5 compressed Images.
+- Added Mapping to convert data from one format into an other.
+05-10-2005
+- Added method ConvertTo in Class TglBitmap2D. Method allows to convert every
+ supported Input format (supported by GetPixel) into any uncompresed Format
+- Added Support to decompress DXT1 compressed Images.
+- SwapColors replaced by ConvertTo
+04-10-2005
+- Added Support for compressed DDSs
+- Added new internal formats (DXT1, DXT3, DXT5)
+29-09-2005
+- Parameter Components renamed to InternalFormat
+23-09-2005
+- Some AllocMem replaced with GetMem (little speed change)
+- better exception handling. Better protection from memory leaks.
+22-09-2005
+- Added support for Direct Draw Surfaces (.DDS) (uncompressed images only)
+- Added new internal formats (RGB8, RGBA8, RGBA4, RGB5A1, RGB10A2, R5G6B5)
+07-09-2005
+- Added support for Grayscale textures
+- Added internal formats (Alpha, Luminance, LuminanceAlpha, BGR8, BGRA8)
+10-07-2005
+- Added support for GL_VERSION_2_0
+- Added support for GL_EXT_texture_filter_anisotropic
+04-07-2005
+- Function FillWithColor fills the Image with one Color
+- Function LoadNormalMap added
+30-06-2005
+- ToNormalMap allows to Create an NormalMap from the Alphachannel
+- ToNormalMap now supports Sobel (nmSobel) function.
+29-06-2005
+- support for RLE Compressed RGB TGAs added
+28-06-2005
+- Class TglBitmapNormalMap added to support Normalmap generation
+- Added function ToNormalMap in class TglBitmap2D to genereate normal maps from textures.
+ 3 Filters are supported. (4 Samples, 3x3 and 5x5)
+16-06-2005
+- Method LoadCubeMapClass removed
+- LoadCubeMap returnvalue is now the Texture paramter. Such as LoadTextures
+- virtual abstract method GenTexture in class TglBitmap now is protected
+12-06-2005
+- now support DescriptionFlag in LoadTga. Allows vertical flipped images to be loaded as normal
+10-06-2005
+- little enhancement for IsPowerOfTwo
+- TglBitmap1D.GenTexture now tests NPOT Textures
+06-06-2005
+- some little name changes. All properties or function with Texture in name are
+ now without texture in name. We have allways texture so we dosn't name it.
+03-06-2005
+- GenTexture now tests if texture is NPOT and NPOT-Texture are supported or
+ TextureTarget is GL_TEXTURE_RECTANGLE. Else it raised an exception.
+02-06-2005
+- added support for GL_ARB_texture_rectangle, GL_EXT_texture_rectangle and GL_NV_texture_rectangle
+25-04-2005
+- Function Unbind added
+- call of SetFilter or SetTextureWrap if TextureID exists results in setting properties to opengl texture.
+21-04-2005
+- class TglBitmapCubeMap added (allows to Create Cubemaps)
+29-03-2005
+- Added Support for PNG Images. (http://pngdelphi.sourceforge.net/)
+ To Enable png's use the define pngimage
+22-03-2005
+- New Functioninterface added
+- Function GetPixel added
+27-11-2004
+- Property BuildMipMaps renamed to MipMap
+21-11-2004
+- property Name removed.
+- BuildMipMaps is now a set of 3 values. None, GluBuildMipmaps and SGIS_generate_mipmap
+22-05-2004
+- property name added. Only used in glForms!
+26-11-2003
+- property FreeDataAfterGenTexture is now available as default (default = true)
+- BuildMipmaps now implemented in TglBitmap1D (i've forgotten it)
+- function MoveMemory replaced with function Move (little speed change)
+- several calculations stored in variables (little speed change)
+29-09-2003
+- property BuildMipsMaps added (default = True)
+ if BuildMipMaps isn't set GenTextures uses glTexImage[12]D else it use gluBuild[12]dMipmaps
+- property FreeDataAfterGenTexture added (default = True)
+ if FreeDataAfterGenTexture is set the texturedata were deleted after the texture was generated.
+- parameter DisableOtherTextureUnits of Bind removed
+- parameter FreeDataAfterGeneration of GenTextures removed
+12-09-2003
+- TglBitmap dosn't delete data if class was destroyed (fixed)
+09-09-2003
+- Bind now enables TextureUnits (by params)
+- GenTextures can leave data (by param)
+- LoadTextures now optimal
+03-09-2003
+- Performance optimization in AddFunc
+- procedure Bind moved to subclasses
+- Added new Class TglBitmap1D to support real OpenGL 1D Textures
+19-08-2003
+- Texturefilter and texturewrap now also as defaults
+ Minfilter = GL_LINEAR_MIPMAP_LINEAR
+ Magfilter = GL_LINEAR
+ Wrap(str) = GL_CLAMP_TO_EDGE
+- Added new format tfCompressed to create a compressed texture.
+- propertys IsCompressed, TextureSize and IsResident added
+ IsCompressed and TextureSize only contains data from level 0
+18-08-2003
+- Added function AddFunc to add PerPixelEffects to Image
+- LoadFromFunc now based on AddFunc
+- Invert now based on AddFunc
+- SwapColors now based on AddFunc
+16-08-2003
+- Added function FlipHorz
+15-08-2003
+- Added function LaodFromFunc to create images with function
+- Added function FlipVert
+- Added internal format RGB(A) if GL_EXT_bgra or OpenGL 1.2 isn't supported
+29-07-2003
+- Added Alphafunctions to calculate alpha per function
+- Added Alpha from ColorKey using alphafunctions
+28-07-2003
+- First full functionally Version of glBitmap
+- Support for 24Bit and 32Bit TGA Pictures added
+25-07-2003
+- begin of programming
+***********************************************************}
+unit glBitmap;
+
+{$message warn 'Hey. I''m the glBitmap.pas and i need to be configured. My master tell me your preferences! ;)'}
+// Please uncomment the defines below to configure the glBitmap to your preferences.
+// If you have configured the unit you can uncomment the warning above.
+
+
+// ###### Start of preferences ################################################
+
+{.$define GLB_NO_NATIVE_GL}
+// To enable the dglOpenGL.pas Header
+// With native GL then bindings are staticlly declared to support other headers
+// or use the glBitmap inside of DLLs (minimize codesize).
+
+
+{.$define GLB_SDL}
+// To enable the support for SDL_surfaces
+
+{.$define GLB_DELPHI}
+// To enable the support for TBitmap from Delphi (not lazarus)
+
+
+// *** image libs ***
+
+{.$define GLB_SDL_IMAGE}
+// To enable the support of SDL_image to load files. (READ ONLY)
+// If you enable SDL_image all other libraries will be ignored!
+
+
+{.$define GLB_PNGIMAGE}
+// to enable png support with the unit pngimage. You can download it from http://pngdelphi.sourceforge.net/
+// if you enable pngimage the libPNG will be ignored
+
+{.$define GLB_LIB_PNG}
+// to use the libPNG http://www.libpng.org/
+// You will need an aditional header.
+// http://www.opengl24.de/index.php?cat=header&file=libpng
+
+{.$define GLB_DELPHI_JPEG}
+// if you enable delphi jpegs the libJPEG will be ignored
+
+{.$define GLB_LIB_JPEG}
+// to use the libJPEG http://www.ijg.org/
+// You will need an aditional header.
+// http://www.opengl24.de/index.php?cat=header&file=libjpeg
+
+// ###### End of preferences ##################################################
+
+
+// ###### PRIVATE. Do not change anything. ####################################
+// *** old defines for compatibility ***
+{$ifdef NO_NATIVE_GL}
+ {$define GLB_NO_NATIVE_GL}
+{$endif}
+{$ifdef pngimage}
+ {$definde GLB_PNGIMAGE}
+{$endif}
+
+
+// *** Delphi Versions ***
+{$ifdef fpc}
+ {$MODE Delphi}
+
+ {$ifdef CPUI386}
+ {$define CPU386}
+ {$asmmode INTEL}
+ {$endif}
+
+ {$ifndef WIN32}
+ {$linklib c}
+ {$endif}
+{$endif}
+
+// *** checking define combinations ***
+{$ifdef GLB_SDL_IMAGE}
+ {$ifndef GLB_SDL}
+ {$message warn 'SDL_image won''t work without SDL. SDL will be activated.'}
+ {$define GLB_SDL}
+ {$endif}
+ {$ifdef GLB_PNGIMAGE}
+ {$message warn 'The unit pngimage will be ignored because you are using SDL_image.'}
+ {$undef GLB_PNGIMAGE}
+ {$endif}
+ {$ifdef GLB_DELPHI_JPEG}
+ {$message warn 'The unit JPEG will be ignored because you are using SDL_image.'}
+ {$undef GLB_DELPHI_JPEG}
+ {$endif}
+ {$ifdef GLB_LIB_PNG}
+ {$message warn 'The library libPNG will be ignored because you are using SDL_image.'}
+ {$undef GLB_LIB_PNG}
+ {$endif}
+ {$ifdef GLB_LIB_JPEG}
+ {$message warn 'The library libJPEG will be ignored because you are using SDL_image.'}
+ {$undef GLB_LIB_JPEG}
+ {$endif}
+
+ {$define GLB_SUPPORT_PNG_READ}
+ {$define GLB_SUPPORT_JPEG_READ}
+{$endif}
+
+{$ifdef GLB_PNGIMAGE}
+ {$ifdef GLB_LIB_PNG}
+ {$message warn 'The library libPNG will be ignored if you are using pngimage.'}
+ {$undef GLB_LIB_PNG}
+ {$endif}
+
+ {$define GLB_SUPPORT_PNG_READ}
+ {$define GLB_SUPPORT_PNG_WRITE}
+{$endif}
+
+{$ifdef GLB_LIB_PNG}
+ {$define GLB_SUPPORT_PNG_READ}
+ {$define GLB_SUPPORT_PNG_WRITE}
+{$endif}
+
+
+{$ifdef GLB_DELPHI_JPEG}
+ {$ifdef GLB_LIB_JPEG}
+ {$message warn 'The library libJPEG will be ignored if you are using the unit JPEG.'}
+ {$undef GLB_LIB_JPEG}
+ {$endif}
+
+ {$define GLB_SUPPORT_JPEG_READ}
+ {$define GLB_SUPPORT_JPEG_WRITE}
+{$endif}
+
+{$ifdef GLB_LIB_JPEG}
+ {$define GLB_SUPPORT_JPEG_READ}
+ {$define GLB_SUPPORT_JPEG_WRITE}
+{$endif}
+
+// *** general options ***
+{$EXTENDEDSYNTAX ON}
+{$LONGSTRINGS ON}
+{$ALIGN ON}
+{$ifndef fpc}
+ {$OPTIMIZATION ON}
+{$endif}
+
+
+interface
+
+
+uses
+ {$ifdef GLB_NO_NATIVE_GL} dglOpenGL, {$endif}
+
+ {$ifdef GLB_SDL} SDL, {$endif}
+ {$ifdef GLB_DELPHI} Dialogs, Windows, Graphics, {$endif}
+
+ {$ifdef GLB_SDL_IMAGE} SDL_image, {$endif}
+
+ {$ifdef GLB_PNGIMAGE} pngimage, {$endif}
+ {$ifdef GLB_LIB_PNG} libPNG, {$endif}
+
+ {$ifdef GLB_DELPHI_JPEG} JPEG, {$endif}
+ {$ifdef GLB_LIB_JPEG} libJPEG, {$endif}
+ Classes, SysUtils;
+
+
+
+{$ifndef GLB_DELPHI}
+type
+ HGLRC = Cardinal;
+ DWORD = Cardinal;
+ PDWORD = ^DWORD;
+
+ TRGBQuad = packed record
+ rgbBlue: Byte;
+ rgbGreen: Byte;
+ rgbRed: Byte;
+ rgbReserved: Byte;
+ end;
+{$endif}
+
+
+{$ifndef GLB_NO_NATIVE_GL}
+// Native OpenGL Implementation
+type
+ PByteBool = ^ByteBool;
+
+{$ifdef GLB_DELPHI}
+var
+ gLastContext: HGLRC;
+{$endif}
+
+const
+ // Generell
+ GL_VERSION = $1F02;
+ GL_EXTENSIONS = $1F03;
+
+ GL_TRUE = 1;
+ GL_FALSE = 0;
+
+ GL_TEXTURE_1D = $0DE0;
+ GL_TEXTURE_2D = $0DE1;
+
+ GL_MAX_TEXTURE_SIZE = $0D33;
+ GL_PACK_ALIGNMENT = $0D05;
+ GL_UNPACK_ALIGNMENT = $0CF5;
+
+ // Textureformats
+ GL_RGB = $1907;
+ GL_RGB4 = $804F;
+ GL_RGB8 = $8051;
+ GL_RGBA = $1908;
+ GL_RGBA4 = $8056;
+ GL_RGBA8 = $8058;
+ GL_BGR = $80E0;
+ GL_BGRA = $80E1;
+ GL_ALPHA4 = $803B;
+ GL_ALPHA8 = $803C;
+ GL_LUMINANCE4 = $803F;
+ GL_LUMINANCE8 = $8040;
+ GL_LUMINANCE4_ALPHA4 = $8043;
+ GL_LUMINANCE8_ALPHA8 = $8045;
+ GL_DEPTH_COMPONENT = $1902;
+
+ GL_UNSIGNED_BYTE = $1401;
+ GL_ALPHA = $1906;
+ GL_LUMINANCE = $1909;
+ GL_LUMINANCE_ALPHA = $190A;
+
+ GL_TEXTURE_WIDTH = $1000;
+ GL_TEXTURE_HEIGHT = $1001;
+ GL_TEXTURE_INTERNAL_FORMAT = $1003;
+ GL_TEXTURE_RED_SIZE = $805C;
+ GL_TEXTURE_GREEN_SIZE = $805D;
+ GL_TEXTURE_BLUE_SIZE = $805E;
+ GL_TEXTURE_ALPHA_SIZE = $805F;
+ GL_TEXTURE_LUMINANCE_SIZE = $8060;
+
+ // Dataformats
+ GL_UNSIGNED_SHORT_5_6_5 = $8363;
+ GL_UNSIGNED_SHORT_5_6_5_REV = $8364;
+ GL_UNSIGNED_SHORT_4_4_4_4_REV = $8365;
+ GL_UNSIGNED_SHORT_1_5_5_5_REV = $8366;
+ GL_UNSIGNED_INT_2_10_10_10_REV = $8368;
+
+ // Filter
+ GL_NEAREST = $2600;
+ GL_LINEAR = $2601;
+ GL_NEAREST_MIPMAP_NEAREST = $2700;
+ GL_LINEAR_MIPMAP_NEAREST = $2701;
+ GL_NEAREST_MIPMAP_LINEAR = $2702;
+ GL_LINEAR_MIPMAP_LINEAR = $2703;
+ GL_TEXTURE_MAG_FILTER = $2800;
+ GL_TEXTURE_MIN_FILTER = $2801;
+
+ // Wrapmodes
+ GL_TEXTURE_WRAP_S = $2802;
+ GL_TEXTURE_WRAP_T = $2803;
+ GL_CLAMP = $2900;
+ GL_REPEAT = $2901;
+ GL_CLAMP_TO_EDGE = $812F;
+ GL_CLAMP_TO_BORDER = $812D;
+ GL_TEXTURE_WRAP_R = $8072;
+
+ GL_MIRRORED_REPEAT = $8370;
+
+ // Border Color
+ GL_TEXTURE_BORDER_COLOR = $1004;
+
+ // Texgen
+ GL_NORMAL_MAP = $8511;
+ GL_REFLECTION_MAP = $8512;
+ GL_S = $2000;
+ GL_T = $2001;
+ GL_R = $2002;
+ GL_TEXTURE_GEN_MODE = $2500;
+ GL_TEXTURE_GEN_S = $0C60;
+ GL_TEXTURE_GEN_T = $0C61;
+ GL_TEXTURE_GEN_R = $0C62;
+
+ // Cubemaps
+ GL_MAX_CUBE_MAP_TEXTURE_SIZE = $851C;
+ GL_TEXTURE_CUBE_MAP = $8513;
+ GL_TEXTURE_BINDING_CUBE_MAP = $8514;
+ GL_TEXTURE_CUBE_MAP_POSITIVE_X = $8515;
+ GL_TEXTURE_CUBE_MAP_NEGATIVE_X = $8516;
+ GL_TEXTURE_CUBE_MAP_POSITIVE_Y = $8517;
+ GL_TEXTURE_CUBE_MAP_NEGATIVE_Y = $8518;
+ GL_TEXTURE_CUBE_MAP_POSITIVE_Z = $8519;
+ GL_TEXTURE_CUBE_MAP_NEGATIVE_Z = $851A;
+
+ GL_TEXTURE_RECTANGLE_ARB = $84F5;
+
+ // GL_SGIS_generate_mipmap
+ GL_GENERATE_MIPMAP = $8191;
+
+ // GL_EXT_texture_compression_s3tc
+ GL_COMPRESSED_RGB_S3TC_DXT1_EXT = $83F0;
+ GL_COMPRESSED_RGBA_S3TC_DXT1_EXT = $83F1;
+ GL_COMPRESSED_RGBA_S3TC_DXT3_EXT = $83F2;
+ GL_COMPRESSED_RGBA_S3TC_DXT5_EXT = $83F3;
+
+ // GL_EXT_texture_filter_anisotropic
+ GL_TEXTURE_MAX_ANISOTROPY_EXT = $84FE;
+ GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT = $84FF;
+
+ // GL_ARB_texture_compression
+ GL_COMPRESSED_RGB = $84ED;
+ GL_COMPRESSED_RGBA = $84EE;
+ GL_COMPRESSED_ALPHA = $84E9;
+ GL_COMPRESSED_LUMINANCE = $84EA;
+ GL_COMPRESSED_LUMINANCE_ALPHA = $84EB;
+
+ // Extensions
+var
+ GL_VERSION_1_2,
+ GL_VERSION_1_3,
+ GL_VERSION_1_4,
+ GL_VERSION_2_0,
+
+ GL_ARB_texture_border_clamp,
+ GL_ARB_texture_cube_map,
+ GL_ARB_texture_compression,
+ GL_ARB_texture_non_power_of_two,
+ GL_ARB_texture_rectangle,
+ GL_ARB_texture_mirrored_repeat,
+ GL_EXT_bgra,
+ GL_EXT_texture_edge_clamp,
+ GL_EXT_texture_cube_map,
+ GL_EXT_texture_compression_s3tc,
+ GL_EXT_texture_filter_anisotropic,
+ GL_EXT_texture_rectangle,
+ GL_NV_texture_rectangle,
+ GL_IBM_texture_mirrored_repeat,
+ GL_SGIS_generate_mipmap: Boolean;
+
+ // Funtions
+const
+
+{$ifdef LINUX}
+ libglu = 'libGLU.so.1';
+ libopengl = 'libGL.so.1';
+{$else}
+ libglu = 'glu32.dll';
+ libopengl = 'opengl32.dll';
+{$endif}
+
+
+{$ifdef LINUX}
+ function glXGetProcAddress(ProcName: PAnsiChar): Pointer; cdecl; external libopengl;
+{$else}
+ function wglGetProcAddress(ProcName: PAnsiChar): Pointer; stdcall; external libopengl;
+{$endif}
+
+ function glGetString(name: Cardinal): PAnsiChar; {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ procedure glEnable(cap: Cardinal); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glDisable(cap: Cardinal); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glGetIntegerv(pname: Cardinal; params: PInteger); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ procedure glTexImage1D(target: Cardinal; level, internalformat, width, border: Integer; format, atype: Cardinal; const pixels: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glTexImage2D(target: Cardinal; level, internalformat, width, height, border: Integer; format, atype: Cardinal; const pixels: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ procedure glGenTextures(n: Integer; Textures: PCardinal); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glBindTexture(target: Cardinal; Texture: Cardinal); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glDeleteTextures(n: Integer; const textures: PCardinal); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ procedure glReadPixels(x, y: Integer; width, height: Integer; format, atype: Cardinal; pixels: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glPixelStorei(pname: Cardinal; param: Integer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glGetTexImage(target: Cardinal; level: Integer; format: Cardinal; _type: Cardinal; pixels: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ function glAreTexturesResident(n: Integer; const Textures: PCardinal; residences: PByteBool): ByteBool; {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glTexParameteri(target: Cardinal; pname: Cardinal; param: Integer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glTexParameterfv(target: Cardinal; pname: Cardinal; const params: PSingle); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glGetTexLevelParameteriv(target: Cardinal; level: Integer; pname: Cardinal; params: PInteger); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+ procedure glTexGeni(coord, pname: Cardinal; param: Integer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libopengl;
+
+ function gluBuild1DMipmaps(Target: Cardinal; Components, Width: Integer; Format, atype: Cardinal; Data: Pointer): Integer; {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libglu;
+ function gluBuild2DMipmaps(Target: Cardinal; Components, Width, Height: Integer; Format, aType: Cardinal; Data: Pointer): Integer; {$ifdef Win32}stdcall; {$else}cdecl; {$endif} external libglu;
+
+var
+ glCompressedTexImage2D : procedure(target: Cardinal; level: Integer; internalformat: Cardinal; width, height: Integer; border: Integer; imageSize: Integer; const data: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif}
+ glCompressedTexImage1D : procedure(target: Cardinal; level: Integer; internalformat: Cardinal; width: Integer; border: Integer; imageSize: Integer; const data: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif}
+ glGetCompressedTexImage : procedure(target: Cardinal; level: Integer; img: Pointer); {$ifdef Win32}stdcall; {$else}cdecl; {$endif}
+{$endif}
+
+
+type
+ // Exception
+ EglBitmapException = Exception;
+ EglBitmapSizeToLargeException = EglBitmapException;
+ EglBitmapNonPowerOfTwoException = EglBitmapException;
+ EglBitmapUnsupportedInternalFormat = EglBitmapException;
+
+ // Functions
+ TglBitmapPixelDesc = packed record
+ RedRange: Cardinal;
+ RedShift: Shortint;
+ GreenRange: Cardinal;
+ GreenShift: Shortint;
+ BlueRange: Cardinal;
+ BlueShift: Shortint;
+ AlphaRange: Cardinal;
+ AlphaShift: Shortint;
+ end;
+
+ TglBitmapPixelData = packed record
+ Red: Cardinal;
+ Green: Cardinal;
+ Blue: Cardinal;
+ Alpha: Cardinal;
+
+ PixelDesc: TglBitmapPixelDesc;
+ end;
+
+ TglBitmapPixelPositionFields = set of (ffX, ffY);
+ TglBitmapPixelPosition = record
+ Fields : TglBitmapPixelPositionFields;
+ X : Word;
+ Y : Word;
+ end;
+
+const
+ cNullSize : TglBitmapPixelPosition = (Fields : []; X: 0; Y: 0);
+
+type
+ TglBitmap = class;
+
+ TglBitmapFunctionRec = record
+ Sender : TglBitmap;
+ Size: TglBitmapPixelPosition;
+ Position: TglBitmapPixelPosition;
+ Source: TglBitmapPixelData;
+ Dest: TglBitmapPixelData;
+ CustomData: Pointer;
+ end;
+
+ TglBitmapFunction = procedure(var FuncRec: TglBitmapFunctionRec);
+
+ TglBitmapGetPixel = procedure (
+ const Pos: TglBitmapPixelPosition;
+ var Pixel: TglBitmapPixelData) of object;
+
+ TglBitmapSetPixel = procedure (
+ const Pos: TglBitmapPixelPosition;
+ const Pixel: TglBitmapPixelData) of object;
+
+ // Settings
+ TglBitmapFileType = (
+ {$ifdef GLB_SUPPORT_PNG_WRITE} ftPNG, {$endif}
+ {$ifdef GLB_SUPPORT_JPEG_WRITE}ftJPEG, {$endif}
+ ftDDS,
+ ftTGA,
+ ftBMP);
+ TglBitmapFileTypes = set of TglBitmapFileType;
+
+ TglBitmapFormat = (tfDefault, tf4BitsPerChanel, tf8BitsPerChanel, tfCompressed);
+ TglBitmapMipMap = (mmNone, mmMipmap, mmMipmapGlu);
+ TglBitmapNormalMapFunc = (nm4Samples, nmSobel, nm3x3, nm5x5);
+ TglBitmapInternalFormat = (
+ ifEmpty,
+ // 4 Bit
+ ifDXT1,
+ // 8 Bit
+ ifDXT3,
+ ifDXT5,
+ ifAlpha,
+ ifLuminance,
+ ifDepth8,
+ // 16 Bit
+ ifLuminanceAlpha,
+ ifRGBA4,
+ ifR5G6B5,
+ ifRGB5A1,
+ // 24 Bit
+ ifBGR8,
+ ifRGB8,
+ // 32 Bit
+ ifBGRA8,
+ ifRGBA8,
+ ifRGB10A2
+ );
+
+ // Pixelmapping
+ TglBitmapMapFunc = procedure (const Pixel: TglBitmapPixelData; var pDest: pByte);
+ TglBitmapUnMapFunc = procedure (var pData: pByte; var Pixel: TglBitmapPixelData);
+
+ // Base Class
+ TglBitmap = class
+ protected
+ fID: Cardinal;
+ fTarget: Cardinal;
+ fFormat: TglBitmapFormat;
+ fMipMap: TglBitmapMipMap;
+ fAnisotropic: Integer;
+ fBorderColor: array [0..3] of single;
+
+ fDeleteTextureOnFree: Boolean;
+ fFreeDataAfterGenTexture: Boolean;
+
+ // Propertys
+ fData: pByte;
+ fInternalFormat: TglBitmapInternalFormat;
+ fDimension: TglBitmapPixelPosition;
+
+ fIsResident: Boolean;
+
+ // Mapping
+ fPixelSize: Integer;
+ fRowSize: Integer;
+ fUnmapFunc: TglBitmapUnMapFunc;
+ fMapFunc: TglBitmapMapFunc;
+
+ // Filtering
+ fFilterMin: Integer;
+ fFilterMag: Integer;
+
+ // Texturwarp
+ fWrapS: Integer;
+ fWrapT: Integer;
+ fWrapR: Integer;
+
+ fGetPixelFunc: TglBitmapGetPixel;
+ fSetPixelFunc: TglBitmapSetPixel;
+
+ // custom data
+ fFilename: String;
+ fCustomName: String;
+ fCustomNameW: WideString;
+ fCustomDataPointer: Pointer;
+
+
+ procedure SetDataPointer(NewData: pByte; Format: TglBitmapInternalFormat; Width: Integer = -1; Height: Integer = -1); virtual;
+
+ {$ifdef GLB_SUPPORT_PNG_READ}
+ function LoadPNG(Stream: TStream): Boolean; virtual;
+ {$endif}
+ {$ifdef GLB_SUPPORT_JPEG_READ}
+ function LoadJPEG(Stream: TStream): Boolean; virtual;
+ {$endif}
+ function LoadDDS(Stream: TStream): Boolean; virtual;
+ function LoadTGA(Stream: TStream): Boolean; virtual;
+ function LoadBMP(Stream: TStream): Boolean; virtual;
+
+
+ {$ifdef GLB_SUPPORT_PNG_WRITE}
+ procedure SavePNG(Stream: TStream); virtual;
+ {$endif}
+ {$ifdef GLB_SUPPORT_JPEG_WRITE}
+ procedure SaveJPEG(Stream: TStream); virtual;
+ {$endif}
+ procedure SaveDDS(Stream: TStream); virtual;
+ procedure SaveTGA(Stream: TStream); virtual;
+ procedure SaveBMP(Stream: TStream); virtual;
+
+
+ procedure CreateID;
+ procedure SetupParameters(var BuildWithGlu: Boolean);
+ procedure SelectFormat(DataFormat: TglBitmapInternalFormat; var glFormat, glInternalFormat, glType: Cardinal; CanConvertImage: Boolean = True);
+
+ procedure GenTexture(TestTextureSize: Boolean = True); virtual; abstract;
+
+ procedure SetAnisotropic(const Value: Integer);
+ procedure SetInternalFormat(const Value: TglBitmapInternalFormat);
+
+ function FlipHorz: Boolean; virtual;
+ function FlipVert: Boolean; virtual;
+
+ function GetHeight: Integer;
+ function GetWidth: Integer;
+
+ function GetFileHeight: Integer;
+ function GetFileWidth: Integer;
+
+ property Width: Integer read GetWidth;
+ property Height: Integer read GetHeight;
+
+ property FileWidth: Integer read GetFileWidth;
+ property FileHeight: Integer read GetFileHeight;
+ public
+ // propertys
+ property ID: Cardinal read fID write fID;
+ property Target: Cardinal read fTarget write fTarget;
+ property Format: TglBitmapFormat read fFormat write fFormat;
+ property InternalFormat: TglBitmapInternalFormat read fInternalFormat write SetInternalFormat;
+ property Dimension: TglBitmapPixelPosition read fDimension;
+
+ property Data: pByte read fData;
+
+ property MipMap: TglBitmapMipMap read fMipMap write fMipMap;
+ property Anisotropic: Integer read fAnisotropic write SetAnisotropic;
+
+ property DeleteTextureOnFree: Boolean read fDeleteTextureOnFree write fDeleteTextureOnFree;
+ property FreeDataAfterGenTexture: Boolean read fFreeDataAfterGenTexture write fFreeDataAfterGenTexture;
+
+ property IsResident: boolean read fIsResident;
+
+ // propertys for custom data
+ property Filename: String read fFilename;
+ property CustomName: String read fCustomName write fCustomName;
+ property CustomNameW: WideString read fCustomNameW write fCustomNameW;
+ property CustomDataPointer: Pointer read fCustomDataPointer write fCustomDataPointer;
+
+ // Construction and Destructions Methods
+ procedure AfterConstruction; override;
+ procedure BeforeDestruction; override;
+
+ constructor Create(); overload;
+ constructor Create(FileName: String); overload;
+ constructor Create(Stream: TStream); overload;
+ {$ifdef GLB_DELPHI}
+ constructor CreateFromResourceName(Instance: Cardinal; Resource: String; ResType: PChar = nil);
+ constructor Create(Instance: Cardinal; Resource: String; ResType: PChar = nil); overload;
+ constructor Create(Instance: Cardinal; ResourceID: Integer; ResType: PChar); overload;
+ {$endif}
+ constructor Create(Size: TglBitmapPixelPosition; Format: TglBitmapInternalFormat); overload;
+ constructor Create(Size: TglBitmapPixelPosition; Format: TglBitmapInternalFormat; Func: TglBitmapFunction; CustomData: Pointer = nil); overload;
+
+ function Clone: TglBitmap;
+
+ procedure FreeData;
+
+ // Loading Methods
+ procedure LoadFromFile(FileName: String);
+ procedure LoadFromStream(Stream: TStream); virtual;
+ {$ifdef GLB_DELPHI}
+ procedure LoadFromResource(Instance: Cardinal; Resource: String; ResType: PChar = nil);
+ procedure LoadFromResourceID(Instance: Cardinal; ResourceID: Integer; ResType: PChar);
+ {$endif}
+ procedure LoadFromFunc(Size: TglBitmapPixelPosition; Func: TglBitmapFunction; Format: TglBitmapInternalFormat; CustomData: Pointer = nil);
+
+ procedure SaveToFile(FileName: String; FileType: TglBitmapFileType);
+ procedure SaveToStream(Stream: TStream; FileType: TglBitmapFileType); virtual;
+
+ function AddFunc(Source: TglBitmap; Func: TglBitmapFunction; CreateTemp: Boolean; Format: TglBitmapInternalFormat; CustomData: Pointer = nil): boolean; overload;
+ function AddFunc(Func: TglBitmapFunction; CreateTemp: Boolean; CustomData: Pointer = nil): boolean; overload;
+
+ {$ifdef GLB_SDL}
+ function AssignToSurface(out Surface: PSDL_Surface): boolean;
+ function AssignFromSurface(const Surface: PSDL_Surface): boolean;
+ function AssignAlphaToSurface(out Surface: PSDL_Surface): boolean;
+
+ function AddAlphaFromSurface(Surface: PSDL_Surface; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ {$endif}
+ {$ifdef GLB_DELPHI}
+ function AssignToBitmap(const Bitmap: TBitmap): boolean;
+ function AssignFromBitmap(const Bitmap: TBitmap): boolean;
+ function AssignAlphaToBitmap(const Bitmap: TBitmap): boolean;
+
+ function AddAlphaFromBitmap(Bitmap: TBitmap; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ {$endif}
+
+ function AddAlphaFromFunc(Func: TglBitmapFunction; CustomData: Pointer = nil): boolean; virtual;
+ function AddAlphaFromFile(FileName: String; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ function AddAlphaFromStream(Stream: TStream; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ {$ifdef GLB_DELPHI}
+ function AddAlphaFromResource(Instance: Cardinal; Resource: String; ResType: PChar = nil; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ function AddAlphaFromResourceID(Instance: Cardinal; ResourceID: Integer; ResType: PChar; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+ {$endif}
+ function AddAlphaFromglBitmap(glBitmap: TglBitmap; Func: TglBitmapFunction = nil; CustomData: Pointer = nil): boolean;
+
+ function AddAlphaFromColorKey(Red, Green, Blue: Byte; Deviation: Byte = 0): Boolean;
+ function AddAlphaFromColorKeyRange(Red, Green, Blue: Cardinal; Deviation: Cardinal = 0): Boolean;
+ function AddAlphaFromColorKeyFloat(Red, Green, Blue: Single; Deviation: Single = 0): Boolean;
+
+ function AddAlphaFromValue(Alpha: Byte): Boolean;
+ function AddAlphaFromValueRange(Alpha: Cardinal): Boolean;
+ function AddAlphaFromValueFloat(Alpha: Single): Boolean;
+
+ function RemoveAlpha: Boolean; virtual;
+
+ function ConvertTo(NewFormat: TglBitmapInternalFormat): boolean; virtual;
+
+ // Other
+ procedure FillWithColor(Red, Green, Blue: Byte; Alpha : Byte = 255);
+ procedure FillWithColorRange(Red, Green, Blue: Cardinal; Alpha : Cardinal = $FFFFFFFF);
+ procedure FillWithColorFloat(Red, Green, Blue: Single; Alpha : Single = 1);
+
+ procedure Invert(UseRGB: Boolean = true; UseAlpha: Boolean = false);
+
+ procedure SetFilter(Min, Mag : Integer);
+ procedure SetWrap(S: Integer = GL_CLAMP_TO_EDGE;
+ T: Integer = GL_CLAMP_TO_EDGE; R: Integer = GL_CLAMP_TO_EDGE);
+
+ procedure SetBorderColor(Red, Green, Blue, Alpha: Single);
+
+ procedure GetPixel (const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData); virtual;
+ procedure SetPixel (const Pos: TglBitmapPixelPosition; const Pixel: TglBitmapPixelData); virtual;
+
+ // Generation
+ procedure Unbind(DisableTextureUnit: Boolean = True); virtual;
+ procedure Bind(EnableTextureUnit: Boolean = True); virtual;
+ end;
+
+
+ TglBitmap2D = class(TglBitmap)
+ protected
+ // Bildeinstellungen
+ fLines: array of PByte;
+
+ procedure GetDXTColorBlock(pData: pByte; relX, relY: Integer; var Pixel: TglBitmapPixelData);
+ procedure GetPixel2DDXT1(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+ procedure GetPixel2DDXT3(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+ procedure GetPixel2DDXT5(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+ procedure GetPixel2DUnmap(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+
+ procedure SetPixel2DUnmap(const Pos: TglBitmapPixelPosition; const Pixel: TglBitmapPixelData);
+
+ function GetScanline(Index: Integer): Pointer;
+
+ procedure SetDataPointer(Data: pByte; Format: TglBitmapInternalFormat; Width: Integer = -1; Height: Integer = -1); override;
+ procedure UploadData (Target, Format, InternalFormat, Typ: Cardinal; BuildWithGlu: Boolean);
+ public
+ // propertys
+ property Width;
+ property Height;
+
+ property Scanline[Index: Integer]: Pointer read GetScanline;
+
+ procedure AfterConstruction; override;
+
+ procedure GrabScreen(Top, Left, Right, Bottom: Integer; Format: TglBitmapInternalFormat);
+ procedure GetDataFromTexture;
+
+ // Other
+ function FlipHorz: Boolean; override;
+ function FlipVert: Boolean; override;
+
+ procedure ToNormalMap(Func: TglBitmapNormalMapFunc = nm3x3; Scale: Single = 2; UseAlpha: Boolean = False);
+
+ // Generation
+ procedure GenTexture(TestTextureSize: Boolean = True); override;
+ end;
+
+
+ TglBitmapCubeMap = class(TglBitmap2D)
+ protected
+ fGenMode: Integer;
+
+ // Hide GenTexture
+ procedure GenTexture(TestTextureSize: Boolean = True); reintroduce;
+ public
+ procedure AfterConstruction; override;
+
+ procedure GenerateCubeMap(CubeTarget: Cardinal; TestTextureSize: Boolean = true);
+
+ procedure Unbind(DisableTexCoordsGen: Boolean = true; DisableTextureUnit: Boolean = True); reintroduce; virtual;
+ procedure Bind(EnableTexCoordsGen: Boolean = true; EnableTextureUnit: Boolean = True); reintroduce; virtual;
+ end;
+
+
+ TglBitmapNormalMap = class(TglBitmapCubeMap)
+ public
+ procedure AfterConstruction; override;
+
+ procedure GenerateNormalMap(Size: Integer = 32; TestTextureSize: Boolean = true);
+ end;
+
+
+ TglBitmap1D = class(TglBitmap)
+ protected
+ procedure GetPixel1DUnmap(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+
+ procedure SetDataPointer(Data: pByte; Format: TglBitmapInternalFormat; Width: Integer = -1; Height: Integer = -1); override;
+ procedure UploadData (Target, Format, InternalFormat, Typ: Cardinal; BuildWithGlu: Boolean);
+ public
+ // propertys
+ property Width;
+
+ procedure AfterConstruction; override;
+
+ // Other
+ function FlipHorz: Boolean; override;
+
+ // Generation
+ procedure GenTexture(TestTextureSize: Boolean = True); override;
+ end;
+
+
+// methods and vars for Defaults
+procedure glBitmapSetDefaultFormat(Format: TglBitmapFormat);
+procedure glBitmapSetDefaultFilter(Min, Mag: Integer);
+procedure glBitmapSetDefaultWrap(S: Integer = GL_CLAMP_TO_EDGE; T: Integer = GL_CLAMP_TO_EDGE; R: Integer = GL_CLAMP_TO_EDGE);
+
+procedure glBitmapSetDefaultDeleteTextureOnFree(DeleteTextureOnFree: Boolean);
+procedure glBitmapSetDefaultFreeDataAfterGenTexture(FreeData: Boolean);
+
+function glBitmapGetDefaultFormat: TglBitmapFormat;
+procedure glBitmapGetDefaultFilter(var Min, Mag: Integer);
+procedure glBitmapGetDefaultTextureWrap(var S, T, R: Integer);
+
+function glBitmapGetDefaultDeleteTextureOnFree: Boolean;
+function glBitmapGetDefaultFreeDataAfterGenTexture: Boolean;
+
+// position / size
+function glBitmapPosition(X: Integer = -1; Y: Integer = -1): TglBitmapPixelPosition;
+
+// Formatfunctions
+function FormatGetSize (Format: TglBitmapInternalFormat): Single;
+
+function FormatIsCompressed(Format: TglBitmapInternalFormat): boolean;
+function FormatIsUncompressed(Format: TglBitmapInternalFormat): boolean;
+function FormatIsEmpty(Format: TglBitmapInternalFormat): boolean;
+function FormatHasAlpha(Format: TglBitmapInternalFormat): Boolean;
+
+procedure FormatPreparePixel(var Pixel: TglBitmapPixelData; Format: TglBitmapInternalFormat);
+
+function FormatGetWithoutAlpha(Format: TglBitmapInternalFormat): TglBitmapInternalFormat;
+function FormatGetWithAlpha(Format: TglBitmapInternalFormat): TglBitmapInternalFormat;
+
+function FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask: Cardinal; Format: TglBitmapInternalFormat): boolean;
+
+
+// Call LoadingMethods
+function LoadTexture(Filename: String; var Texture: Cardinal{$ifdef GLB_DELPHI}; LoadFromRes : Boolean; Instance: Cardinal = 0{$endif}): Boolean;
+
+function LoadCubeMap(PositiveX, NegativeX, PositiveY, NegativeY, PositiveZ, NegativeZ: String; var Texture: Cardinal{$ifdef GLB_DELPHI}; LoadFromRes : Boolean; Instance: Cardinal = 0{$endif}): Boolean;
+
+function LoadNormalMap(Size: Integer; var Texture: Cardinal): Boolean;
+
+
+var
+ glBitmapDefaultFormat: TglBitmapFormat;
+ glBitmapDefaultFilterMin: Integer;
+ glBitmapDefaultFilterMag: Integer;
+ glBitmapDefaultWrapS: Integer;
+ glBitmapDefaultWrapT: Integer;
+ glBitmapDefaultWrapR: Integer;
+
+ glBitmapDefaultDeleteTextureOnFree: Boolean;
+ glBitmapDefaultFreeDataAfterGenTextures: Boolean;
+
+{$ifdef GLB_DELPHI}
+function CreateGrayPalette: HPALETTE;
+{$endif}
+
+
+implementation
+
+uses
+ Math;
+
+
+{$ifndef GLB_NO_NATIVE_GL}
+procedure ReadOpenGLExtensions;
+var
+ {$ifdef GLB_DELPHI}
+ Context: HGLRC;
+ {$endif}
+ Buffer: AnsiString;
+ MajorVersion, MinorVersion: Integer;
+
+
+ procedure TrimVersionString(Buffer: AnsiString; var Major, Minor: Integer);
+ var
+ Separator: Integer;
+ begin
+ Minor := 0;
+ Major := 0;
+
+ Separator := Pos(AnsiString('.'), Buffer);
+
+ if (Separator > 1) and (Separator < Length(Buffer)) and
+ (Buffer[Separator - 1] in ['0'..'9']) and
+ (Buffer[Separator + 1] in ['0'..'9']) then begin
+
+ Dec(Separator);
+ while (Separator > 0) and (Buffer[Separator] in ['0'..'9']) do
+ Dec(Separator);
+
+ Delete(Buffer, 1, Separator);
+ Separator := Pos(AnsiString('.'), Buffer) + 1;
+
+ while (Separator <= Length(Buffer)) and (AnsiChar(Buffer[Separator]) in ['0'..'9']) do
+ Inc(Separator);
+
+ Delete(Buffer, Separator, 255);
+ Separator := Pos(AnsiString('.'), Buffer);
+
+ Major := StrToInt(Copy(String(Buffer), 1, Separator - 1));
+ Minor := StrToInt(Copy(String(Buffer), Separator + 1, 1));
+ end;
+ end;
+
+
+ function CheckExtension(const Extension: AnsiString): Boolean;
+ var
+ ExtPos: Integer;
+ begin
+ ExtPos := Pos(Extension, Buffer);
+ Result := ExtPos > 0;
+
+ if Result then
+ Result := ((ExtPos + Length(Extension) - 1) = Length(Buffer)) or not (Buffer[ExtPos + Length(Extension)] in ['_', 'A'..'Z', 'a'..'z']);
+ end;
+
+
+ function glLoad (aFunc: pAnsiChar): pointer;
+ begin
+ {$ifdef LINUX}
+ Result := glXGetProcAddress(aFunc);
+ {$else}
+ Result := wglGetProcAddress(aFunc);
+ {$endif}
+ end;
+
+
+begin
+ {$ifdef GLB_DELPHI}
+ Context := wglGetCurrentContext;
+
+ if Context <> gLastContext then begin
+ gLastContext := Context;
+ {$endif}
+
+ // Version
+ Buffer := glGetString(GL_VERSION);
+ TrimVersionString(Buffer, MajorVersion, MinorVersion);
+
+ GL_VERSION_1_2 := False;
+ GL_VERSION_1_3 := False;
+ GL_VERSION_1_4 := False;
+ GL_VERSION_2_0 := False;
+
+ if MajorVersion = 1 then begin
+ if MinorVersion >= 1 then begin
+ if MinorVersion >= 2 then
+ GL_VERSION_1_2 := True;
+
+ if MinorVersion >= 3 then
+ GL_VERSION_1_3 := True;
+
+ if MinorVersion >= 4 then
+ GL_VERSION_1_4 := True;
+ end;
+ end;
+
+ if MajorVersion >= 2 then begin
+ GL_VERSION_1_2 := True;
+ GL_VERSION_1_3 := True;
+ GL_VERSION_1_4 := True;
+ GL_VERSION_2_0 := True;
+ end;
+
+ // Extensions
+ Buffer := glGetString(GL_EXTENSIONS);
+ GL_ARB_texture_border_clamp := CheckExtension('GL_ARB_texture_border_clamp');
+ GL_ARB_texture_cube_map := CheckExtension('GL_ARB_texture_cube_map');
+ GL_ARB_texture_compression := CheckExtension('GL_ARB_texture_compression');
+ GL_ARB_texture_non_power_of_two := CheckExtension('GL_ARB_texture_non_power_of_two');
+ GL_ARB_texture_rectangle := CheckExtension('GL_ARB_texture_rectangle');
+ GL_ARB_texture_mirrored_repeat := CheckExtension('GL_ARB_texture_mirrored_repeat');
+ GL_EXT_bgra := CheckExtension('GL_EXT_bgra');
+ GL_EXT_texture_edge_clamp := CheckExtension('GL_EXT_texture_edge_clamp');
+ GL_EXT_texture_cube_map := CheckExtension('GL_EXT_texture_cube_map');
+ GL_EXT_texture_compression_s3tc := CheckExtension('GL_EXT_texture_compression_s3tc');
+ GL_EXT_texture_filter_anisotropic := CheckExtension('GL_EXT_texture_filter_anisotropic');
+ GL_EXT_texture_rectangle := CheckExtension('GL_EXT_texture_rectangle');
+ GL_NV_texture_rectangle := CheckExtension('GL_NV_texture_rectangle');
+ GL_IBM_texture_mirrored_repeat := CheckExtension('GL_IBM_texture_mirrored_repeat');
+ GL_SGIS_generate_mipmap := CheckExtension('GL_SGIS_generate_mipmap');
+
+ // Funtions
+ if GL_VERSION_1_3 then begin
+ // Loading Core
+ glCompressedTexImage1D := glLoad('glCompressedTexImage1D');
+ glCompressedTexImage2D := glLoad('glCompressedTexImage2D');
+ glGetCompressedTexImage := glLoad('glGetCompressedTexImage');
+ end else
+
+ begin
+ // Try loading Extension
+ glCompressedTexImage1D := glLoad('glCompressedTexImage1DARB');
+ glCompressedTexImage2D := glLoad('glCompressedTexImage2DARB');
+ glGetCompressedTexImage := glLoad('glGetCompressedTexImageARB');
+ end;
+ {$ifdef GLB_DELPHI}
+ end;
+ {$endif}
+end;
+{$endif}
+
+
+function glBitmapPosition(X, Y: Integer): TglBitmapPixelPosition;
+begin
+ Result.Fields := [];
+
+ if X >= 0 then
+ Result.Fields := Result.Fields + [ffX];
+ if Y >= 0 then
+ Result.Fields := Result.Fields + [ffY];
+
+ Result.X := Max(0, X);
+ Result.Y := Max(0, Y);
+end;
+
+
+const
+ UNSUPPORTED_INTERNAL_FORMAT = 'the given format isn''t supported by this function.';
+
+ PIXEL_DESC_ALPHA : TglBitmapPixelDesc = (
+ RedRange : $00; RedShift : 0;
+ GreenRange : $00; GreenShift : 0;
+ BlueRange : $00; BlueShift : 0;
+ AlphaRange : $FF; AlphaShift : 0 );
+
+ PIXEL_DESC_LUMINANCE : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 0;
+ GreenRange : $FF; GreenShift : 0;
+ BlueRange : $FF; BlueShift : 0;
+ AlphaRange : $00; AlphaShift : 0 );
+
+ PIXEL_DESC_DEPTH8 : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 0;
+ GreenRange : $FF; GreenShift : 0;
+ BlueRange : $FF; BlueShift : 0;
+ AlphaRange : $00; AlphaShift : 0 );
+
+ PIXEL_DESC_LUMINANCEALPHA : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 0;
+ GreenRange : $FF; GreenShift : 0;
+ BlueRange : $FF; BlueShift : 0;
+ AlphaRange : $FF; AlphaShift : 8 );
+
+ PIXEL_DESC_RGBA4 : TglBitmapPixelDesc = (
+ RedRange : $0F; RedShift : 8;
+ GreenRange : $0F; GreenShift : 4;
+ BlueRange : $0F; BlueShift : 0;
+ AlphaRange : $0F; AlphaShift : 12 );
+
+ PIXEL_DESC_R5G6B5 : TglBitmapPixelDesc = (
+ RedRange : $1F; RedShift : 11;
+ GreenRange : $3F; GreenShift : 5;
+ BlueRange : $1F; BlueShift : 0;
+ AlphaRange : $00; AlphaShift : 0 );
+
+ PIXEL_DESC_RGB5A1 : TglBitmapPixelDesc = (
+ RedRange : $1F; RedShift : 10;
+ GreenRange : $1F; GreenShift : 5;
+ BlueRange : $1F; BlueShift : 0;
+ AlphaRange : $01; AlphaShift : 15 );
+
+ PIXEL_DESC_RGB8 : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 0;
+ GreenRange : $FF; GreenShift : 8;
+ BlueRange : $FF; BlueShift : 16;
+ AlphaRange : $00; AlphaShift : 0 );
+
+ PIXEL_DESC_RGBA8 : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 0;
+ GreenRange : $FF; GreenShift : 8;
+ BlueRange : $FF; BlueShift : 16;
+ AlphaRange : $FF; AlphaShift : 24 );
+
+ PIXEL_DESC_BGR8 : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 16;
+ GreenRange : $FF; GreenShift : 8;
+ BlueRange : $FF; BlueShift : 0;
+ AlphaRange : $00; AlphaShift : 0 );
+
+ PIXEL_DESC_BGRA8 : TglBitmapPixelDesc = (
+ RedRange : $FF; RedShift : 16;
+ GreenRange : $FF; GreenShift : 8;
+ BlueRange : $FF; BlueShift : 0;
+ AlphaRange : $FF; AlphaShift : 24 );
+
+ PIXEL_DESC_RGB10A2 : TglBitmapPixelDesc = (
+ RedRange : $3FF; RedShift : 20;
+ GreenRange : $3FF; GreenShift : 10;
+ BlueRange : $3FF; BlueShift : 0;
+ AlphaRange : $003; AlphaShift : 30 );
+
+{*
+** Mapping
+*}
+
+procedure MapAlpha(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := Pixel.Alpha;
+ Inc(pDest);
+end;
+
+
+procedure MapLuminance(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := Trunc(Pixel.Red * 0.3 + Pixel.Green * 0.59 + Pixel.Blue * 0.11);
+ Inc(pDest);
+end;
+
+
+procedure MapDepth8(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := (Pixel.Red + Pixel.Green + Pixel.Blue) div 3;
+ Inc(pDest);
+end;
+
+
+procedure MapLuminanceAlpha(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := Trunc(Pixel.Red * 0.3 + Pixel.Green * 0.59 + Pixel.Blue * 0.11);
+ Inc(pDest);
+
+ pDest^ := Pixel.Alpha;
+ Inc(pDest);
+end;
+
+
+procedure MapRGBA4(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pWord(pDest)^ :=
+ Pixel.Alpha shl PIXEL_DESC_RGBA4.AlphaShift or
+ Pixel.Red shl PIXEL_DESC_RGBA4.RedShift or
+ Pixel.Green shl PIXEL_DESC_RGBA4.GreenShift or
+ Pixel.Blue;
+
+ Inc(pDest, 2);
+end;
+
+
+procedure MapR5G6B5(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pWord(pDest)^ :=
+ Pixel.Red shl PIXEL_DESC_R5G6B5.RedShift or
+ Pixel.Green shl PIXEL_DESC_R5G6B5.GreenShift or
+ Pixel.Blue;
+
+ Inc(pDest, 2);
+end;
+
+
+procedure MapRGB5A1(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pWord(pDest)^ :=
+ Pixel.Alpha shl PIXEL_DESC_RGB5A1.AlphaShift or
+ Pixel.Red shl PIXEL_DESC_RGB5A1.RedShift or
+ Pixel.Green shl PIXEL_DESC_RGB5A1.GreenShift or
+ Pixel.Blue;
+
+ Inc(pDest, 2);
+end;
+
+
+procedure MapRGB8(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := Pixel.Red;
+ Inc(pDest);
+
+ pDest^ := Pixel.Green;
+ Inc(pDest);
+
+ pDest^ := Pixel.Blue;
+ Inc(pDest);
+end;
+
+
+procedure MapBGR8(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDest^ := Pixel.Blue;
+ Inc(pDest);
+
+ pDest^ := Pixel.Green;
+ Inc(pDest);
+
+ pDest^ := Pixel.Red;
+ Inc(pDest);
+end;
+
+
+procedure MapRGBA8(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDWord(pDest)^ :=
+ Pixel.Alpha shl PIXEL_DESC_RGBA8.AlphaShift or
+ Pixel.Blue shl PIXEL_DESC_RGBA8.BlueShift or
+ Pixel.Green shl PIXEL_DESC_RGBA8.GreenShift or
+ Pixel.Red;
+
+ Inc(pDest, 4);
+end;
+
+
+procedure MapBGRA8(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDWord(pDest)^ :=
+ Pixel.Alpha shl PIXEL_DESC_BGRA8.AlphaShift or
+ Pixel.Red shl PIXEL_DESC_BGRA8.RedShift or
+ Pixel.Green shl PIXEL_DESC_BGRA8.GreenShift or
+ Pixel.Blue;
+
+ Inc(pDest, 4);
+end;
+
+
+procedure MapRGB10A2(const Pixel: TglBitmapPixelData; var pDest: pByte);
+begin
+ pDWord(pDest)^ :=
+ Pixel.Alpha shl PIXEL_DESC_RGB10A2.AlphaShift or
+ Pixel.Red shl PIXEL_DESC_RGB10A2.RedShift or
+ Pixel.Green shl PIXEL_DESC_RGB10A2.GreenShift or
+ Pixel.Blue;
+
+ Inc(pDest, 4);
+end;
+
+
+function FormatGetMapFunc(Format: TglBitmapInternalFormat): TglBitmapMapFunc;
+begin
+ case Format of
+ ifAlpha: Result := MapAlpha;
+ ifLuminance: Result := MapLuminance;
+ ifDepth8: Result := MapDepth8;
+ ifLuminanceAlpha: Result := MapLuminanceAlpha;
+ ifRGBA4: Result := MapRGBA4;
+ ifR5G6B5: Result := MapR5G6B5;
+ ifRGB5A1: Result := MapRGB5A1;
+ ifRGB8: Result := MapRGB8;
+ ifBGR8: Result := MapBGR8;
+ ifRGBA8: Result := MapRGBA8;
+ ifBGRA8: Result := MapBGRA8;
+ ifRGB10A2: Result := MapRGB10A2;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('FormatGetMapFunc - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+end;
+
+
+{*
+** Unmapping
+*}
+procedure UnMapAlpha(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Alpha := pData^;
+ Pixel.Red := Pixel.PixelDesc.RedRange;
+ Pixel.Green := Pixel.PixelDesc.GreenRange;
+ Pixel.Blue := Pixel.PixelDesc.BlueRange;
+
+ Inc(pData);
+end;
+
+
+procedure UnMapLuminance(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Alpha := 255;
+ Pixel.Red := pData^;
+ Pixel.Green := pData^;
+ Pixel.Blue := pData^;
+
+ Inc(pData);
+end;
+
+
+procedure UnMapDepth8(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Alpha := 255;
+ Pixel.Red := pData^;
+ Pixel.Green := pData^;
+ Pixel.Blue := pData^;
+
+ Inc(pData);
+end;
+
+
+procedure UnMapLuminanceAlpha(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Red := pData^;
+ Pixel.Green := pData^;
+ Pixel.Blue := pData^;
+ Inc(pData);
+
+ Pixel.Alpha := pData^;
+ Inc(pData);
+end;
+
+
+procedure UnMapRGBA4(var pData: pByte; var Pixel: TglBitmapPixelData);
+var
+ Temp: Word;
+begin
+ Temp := pWord(pData)^;
+
+ Pixel.Alpha := Temp shr PIXEL_DESC_RGBA4.AlphaShift and PIXEL_DESC_RGBA4.AlphaRange;
+ Pixel.Red := Temp shr PIXEL_DESC_RGBA4.RedShift and PIXEL_DESC_RGBA4.RedRange;
+ Pixel.Green := Temp shr PIXEL_DESC_RGBA4.GreenShift and PIXEL_DESC_RGBA4.GreenRange;
+ Pixel.Blue := Temp and PIXEL_DESC_RGBA4.BlueRange;
+
+ Inc(pData, 2);
+end;
+
+
+procedure UnMapR5G6B5(var pData: pByte; var Pixel: TglBitmapPixelData);
+var
+ Temp: Word;
+begin
+ Temp := pWord(pData)^;
+
+ Pixel.Alpha := Pixel.PixelDesc.AlphaRange;
+ Pixel.Red := Temp shr PIXEL_DESC_R5G6B5.RedShift and PIXEL_DESC_R5G6B5.RedRange;
+ Pixel.Green := Temp shr PIXEL_DESC_R5G6B5.GreenShift and PIXEL_DESC_R5G6B5.GreenRange;
+ Pixel.Blue := Temp and PIXEL_DESC_R5G6B5.BlueRange;
+
+ Inc(pData, 2);
+end;
+
+
+procedure UnMapRGB5A1(var pData: pByte; var Pixel: TglBitmapPixelData);
+var
+ Temp: Word;
+begin
+ Temp := pWord(pData)^;
+
+ Pixel.Alpha := Temp shr PIXEL_DESC_RGB5A1.AlphaShift and PIXEL_DESC_RGB5A1.AlphaRange;
+ Pixel.Red := Temp shr PIXEL_DESC_RGB5A1.RedShift and PIXEL_DESC_RGB5A1.RedRange;
+ Pixel.Green := Temp shr PIXEL_DESC_RGB5A1.GreenShift and PIXEL_DESC_RGB5A1.GreenRange;
+ Pixel.Blue := Temp and PIXEL_DESC_RGB5A1.BlueRange;
+
+ Inc(pData, 2);
+end;
+
+
+procedure UnMapRGB8(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Alpha := Pixel.PixelDesc.AlphaRange;
+
+ Pixel.Red := pData^;
+ Inc(pData);
+
+ Pixel.Green := pData^;
+ Inc(pData);
+
+ Pixel.Blue := pData^;
+ Inc(pData);
+end;
+
+
+procedure UnMapBGR8(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Alpha := Pixel.PixelDesc.AlphaRange;
+
+ Pixel.Blue := pData^;
+ Inc(pData);
+
+ Pixel.Green := pData^;
+ Inc(pData);
+
+ Pixel.Red := pData^;
+ Inc(pData);
+end;
+
+
+procedure UnMapRGBA8(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Red := pData^;
+ Inc(pData);
+
+ Pixel.Green := pData^;
+ Inc(pData);
+
+ Pixel.Blue := pData^;
+ Inc(pData);
+
+ Pixel.Alpha := pData^;
+ Inc(pData);
+end;
+
+
+procedure UnMapBGRA8(var pData: pByte; var Pixel: TglBitmapPixelData);
+begin
+ Pixel.Blue := pData^;
+ Inc(pData);
+
+ Pixel.Green := pData^;
+ Inc(pData);
+
+ Pixel.Red := pData^;
+ Inc(pData);
+
+ Pixel.Alpha := pData^;
+ Inc(pData);
+end;
+
+
+procedure UnMapRGB10A2(var pData: pByte; var Pixel: TglBitmapPixelData);
+var
+ Temp: DWord;
+begin
+ Temp := pDWord(pData)^;
+
+ Pixel.Alpha := Temp shr PIXEL_DESC_RGB10A2.AlphaShift and PIXEL_DESC_RGB10A2.AlphaRange;
+ Pixel.Red := Temp shr PIXEL_DESC_RGB10A2.RedShift and PIXEL_DESC_RGB10A2.RedRange;
+ Pixel.Green := Temp shr PIXEL_DESC_RGB10A2.GreenShift and PIXEL_DESC_RGB10A2.GreenRange;
+ Pixel.Blue := Temp and PIXEL_DESC_RGB10A2.BlueRange;
+
+ Inc(pData, 4);
+end;
+
+
+function FormatGetUnMapFunc(Format: TglBitmapInternalFormat): TglBitmapUnMapFunc;
+begin
+ case Format of
+ ifAlpha: Result := UnmapAlpha;
+ ifLuminance: Result := UnMapLuminance;
+ ifDepth8: Result := UnMapDepth8;
+ ifLuminanceAlpha: Result := UnMapLuminanceAlpha;
+ ifRGBA4: Result := UnMapRGBA4;
+ ifR5G6B5: Result := UnMapR5G6B5;
+ ifRGB5A1: Result := UnMapRGB5A1;
+ ifRGB8: Result := UnMapRGB8;
+ ifBGR8: Result := UnMapBGR8;
+ ifRGBA8: Result := UnMapRGBA8;
+ ifBGRA8: Result := UnMapBGRA8;
+ ifRGB10A2: Result := UnMapRGB10A2;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('FormatGetUnMapFunc - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+end;
+
+{*
+** Tools
+*}
+function FormatGetSize (Format: TglBitmapInternalFormat): Single;
+begin
+ case Format of
+ ifEmpty:
+ Result := 0;
+ ifDXT1:
+ Result := 0.5;
+ ifAlpha, ifLuminance, ifDepth8, ifDXT3, ifDXT5:
+ Result := 1;
+ ifLuminanceAlpha, ifRGBA4, ifRGB5A1, ifR5G6B5:
+ Result := 2;
+ ifBGR8, ifRGB8:
+ Result := 3;
+ ifBGRA8, ifRGBA8, ifRGB10A2:
+ Result := 4;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('FormatGetSize - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+end;
+
+
+function FormatIsCompressed(Format: TglBitmapInternalFormat): boolean;
+begin
+ Result := Format in [ifDXT1, ifDXT3, ifDXT5];
+end;
+
+
+function FormatIsUncompressed(Format: TglBitmapInternalFormat): boolean;
+begin
+ Result := Format in [ifAlpha, ifLuminance, ifDepth8, ifLuminanceAlpha, ifRGBA4, ifRGB5A1, ifR5G6B5, ifBGR8, ifRGB8, ifBGRA8, ifRGBA8, ifRGB10A2];
+end;
+
+
+function FormatIsEmpty(Format: TglBitmapInternalFormat): boolean;
+begin
+ Result := Format = ifEmpty;
+end;
+
+
+function FormatHasAlpha(Format: TglBitmapInternalFormat): Boolean;
+begin
+ Result := Format in [ifDXT1, ifDXT3, ifDXT5 ,ifAlpha, ifLuminanceAlpha, ifRGBA4, ifRGB5A1, ifBGRA8, ifRGBA8, ifRGB10A2];
+end;
+
+
+procedure FormatPreparePixel(var Pixel: TglBitmapPixelData; Format: TglBitmapInternalFormat);
+begin
+ FillChar(Pixel, SizeOf(Pixel), #0);
+
+ case Format of
+ ifAlpha:
+ Pixel.PixelDesc := PIXEL_DESC_ALPHA;
+ ifLuminance:
+ Pixel.PixelDesc := PIXEL_DESC_LUMINANCE;
+ ifDepth8:
+ Pixel.PixelDesc := PIXEL_DESC_DEPTH8;
+ ifLuminanceAlpha:
+ Pixel.PixelDesc := PIXEL_DESC_LUMINANCEALPHA;
+ ifRGBA4:
+ Pixel.PixelDesc := PIXEL_DESC_RGBA4;
+ ifR5G6B5:
+ Pixel.PixelDesc := PIXEL_DESC_R5G6B5;
+ ifRGB5A1:
+ Pixel.PixelDesc := PIXEL_DESC_RGB5A1;
+ ifDXT1, ifDXT3, ifDXT5, ifBGRA8:
+ Pixel.PixelDesc := PIXEL_DESC_BGRA8;
+ ifBGR8:
+ Pixel.PixelDesc := PIXEL_DESC_BGR8;
+ ifRGB8:
+ Pixel.PixelDesc := PIXEL_DESC_RGB8;
+ ifRGBA8:
+ Pixel.PixelDesc := PIXEL_DESC_RGBA8;
+ ifRGB10A2:
+ Pixel.PixelDesc := PIXEL_DESC_RGB10A2;
+ end;
+
+ Pixel.Red := Pixel.PixelDesc.RedRange;
+ Pixel.Green := Pixel.PixelDesc.GreenRange;
+ Pixel.Blue := Pixel.PixelDesc.BlueRange;
+ Pixel.Alpha := Pixel.PixelDesc.AlphaRange;
+end;
+
+
+function FormatGetWithoutAlpha(Format: TglBitmapInternalFormat): TglBitmapInternalFormat;
+begin
+ case Format of
+ ifAlpha:
+ Result := ifLuminance;
+ ifLuminanceAlpha:
+ Result := ifLuminance;
+ ifRGBA4:
+ Result := ifR5G6B5;
+ ifRGB5A1:
+ Result := ifR5G6B5;
+ ifBGRA8:
+ Result := ifBGR8;
+ ifRGBA8:
+ Result := ifRGB8;
+ ifRGB10A2:
+ Result := ifRGB8;
+ else
+ Result := Format;
+ end;
+end;
+
+
+function FormatGetWithAlpha(Format: TglBitmapInternalFormat): TglBitmapInternalFormat;
+begin
+ case Format of
+ ifLuminance:
+ Result := ifLuminanceAlpha;
+ ifR5G6B5:
+ Result := ifRGB5A1;
+ ifBGR8:
+ Result := ifBGRA8;
+ ifRGB8:
+ Result := ifRGBA8;
+ else
+ Result := Format;
+ end;
+end;
+
+
+function FormatGetUncompressed(Format: TglBitmapInternalFormat): TglBitmapInternalFormat;
+begin
+ case Format of
+ ifDXT1:
+ Result := ifRGB5A1;
+ ifDXT3:
+ Result := ifRGBA8;
+ ifDXT5:
+ Result := ifRGBA8;
+ else
+ Result := Format;
+ end;
+end;
+
+
+function FormatGetImageSize(Size: TglBitmapPixelPosition; Format: TglBitmapInternalFormat): Integer;
+begin
+ if (Size.X = 0) and (Size.Y = 0) then
+ Result := 0
+ else
+ Result := Trunc(Max(Size.Y, 1) * Max(Size.X, 1) * FormatGetSize(Format));
+end;
+
+
+function FormatGetSupportedFiles(Format: TglBitmapInternalFormat): TglBitmapFileTypes;
+begin
+ Result := [];
+
+ {$ifdef GLB_SUPPORT_PNG_WRITE}
+ if Format in [ifLuminance, ifAlpha, ifDepth8, ifLuminanceAlpha, ifBGR8, ifBGRA8, ifRGB8, ifRGBA8] then
+ Result := Result + [ftPNG];
+ {$endif}
+
+ {$ifdef GLB_SUPPORT_JPEG_WRITE}
+ if Format in [ifLuminance, ifAlpha, ifDepth8, ifRGB8, ifBGR8] then
+ Result := Result + [ftJPEG];
+ {$endif}
+
+ Result := Result + [ftDDS];
+
+ if Format in [ifLuminance, ifAlpha, ifDepth8, ifLuminanceAlpha, ifBGR8, ifRGB8, ifBGRA8, ifRGBA8] then
+ Result := Result + [ftTGA];
+
+ if Format in [ifLuminance, ifAlpha, ifDepth8, ifLuminanceAlpha, ifRGBA4, ifRGB5A1, ifR5G6B5, ifRGB8, ifBGR8, ifRGBA8, ifBGRA8, ifRGB10A2] then
+ Result := Result + [ftBMP];
+end;
+
+
+function FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask: Cardinal; Format: TglBitmapInternalFormat): boolean;
+var
+ Pix: TglBitmapPixelData;
+begin
+ Result := False;
+
+ if (RedMask = 0) and (GreenMask = 0) and (BlueMask = 0) and (AlphaMask = 0) then
+ raise EglBitmapException.Create('FormatCheckFormat - All Masks are 0');
+
+ FormatPreparePixel(Pix, Format);
+
+ with Pix.PixelDesc do begin
+ if RedMask <> 0 then
+ if (RedMask <> (RedRange shl RedShift)) then
+ Exit;
+
+ if GreenMask <> 0 then
+ if (GreenMask <> (GreenRange shl GreenShift)) then
+ Exit;
+
+ if BlueMask <> 0 then
+ if (BlueMask <> (BlueRange shl BlueShift)) then
+ Exit;
+
+ if AlphaMask <> 0 then
+ if (AlphaMask <> (AlphaRange shl AlphaShift)) then
+ Exit;
+
+ Result := True;
+ end;
+end;
+
+
+function IsPowerOfTwo(Number: Integer): Boolean;
+begin
+ while Number and 1 = 0 do
+ Number := Number shr 1;
+
+ Result := Number = 1;
+end;
+
+
+function GetBitSize(BitSet: Cardinal): Integer;
+begin
+ Result := 0;
+
+ while BitSet > 0 do begin
+ if (BitSet and $1) = 1 then
+ Inc(Result);
+
+ BitSet := BitSet shr 1;
+ end;
+end;
+
+
+procedure SwapRGB(pData: pByte; Width: Integer; HasAlpha: Boolean);
+type
+ PRGBPix = ^TRGBPix;
+ TRGBPix = array [0..2] of byte;
+var
+ Temp: Byte;
+begin
+ while Width > 0 do begin
+ Temp := pRGBPIX(pData)^[0];
+ pRGBPIX(pData)^[0] := pRGBPIX(pData)^[2];
+ pRGBPIX(pData)^[2] := Temp;
+
+ if HasAlpha then
+ Inc(pData, 4)
+ else
+ Inc(pData, 3);
+
+ Dec(Width);
+ end;
+end;
+
+
+{$ifdef GLB_DELPHI}
+function CreateGrayPalette: HPALETTE;
+var
+ Idx: Integer;
+ Pal: PLogPalette;
+begin
+ GetMem(Pal, SizeOf(TLogPalette) + (SizeOf(TPaletteEntry) * 256));
+
+ Pal.palVersion := $300;
+ Pal.palNumEntries := 256;
+
+ {$IFOPT R+}
+ {$DEFINE GLB_TEMPRANGECHECK}
+ {$R-}
+ {$ENDIF}
+
+ for Idx := 0 to 256 - 1 do begin
+ Pal.palPalEntry[Idx].peRed := Idx;
+ Pal.palPalEntry[Idx].peGreen := Idx;
+ Pal.palPalEntry[Idx].peBlue := Idx;
+ Pal.palPalEntry[Idx].peFlags := 0;
+ end;
+
+ {$IFDEF GLB_TEMPRANGECHECK}
+ {$UNDEF GLB_TEMPRANGECHECK}
+ {$R+}
+ {$ENDIF}
+
+ Result := CreatePalette(Pal^);
+
+ FreeMem(Pal);
+end;
+{$endif}
+
+
+{$ifdef GLB_SDL_IMAGE}
+function glBitmapRWseek(context: PSDL_RWops; offset: Integer; whence: Integer): Integer; cdecl;
+begin
+ Result := TStream(context^.unknown.data1).Seek(offset, whence);
+end;
+
+
+function glBitmapRWread(context: PSDL_RWops; Ptr: Pointer; size: Integer; maxnum : Integer): Integer; cdecl;
+begin
+ Result := TStream(context^.unknown.data1).Read(Ptr^, size * maxnum);
+end;
+
+
+function glBitmapRWwrite(context: PSDL_RWops; Ptr: Pointer; size: Integer; num: Integer): Integer; cdecl;
+begin
+ Result := TStream(context^.unknown.data1).Write(Ptr^, size * num);
+end;
+
+
+function glBitmapRWclose(context: PSDL_RWops): Integer; cdecl;
+begin
+ Result := 0;
+end;
+
+
+function glBitmapCreateRWops(Stream: TStream): PSDL_RWops;
+begin
+ Result := SDL_AllocRW;
+
+ if Result = nil then
+ raise EglBitmapException.Create('glBitmapCreateRWops - SDL_AllocRW failed.');
+
+ Result^.seek := glBitmapRWseek;
+ Result^.read := glBitmapRWread;
+ Result^.write := glBitmapRWwrite;
+ Result^.close := glBitmapRWclose;
+ Result^.unknown.data1 := Stream;
+end;
+{$endif}
+
+
+{*
+** Helper functions
+*}
+function LoadTexture(Filename: String; var Texture: Cardinal{$ifdef GLB_DELPHI}; LoadFromRes : Boolean; Instance: Cardinal{$endif}): Boolean;
+var
+ glBitmap: TglBitmap2D;
+begin
+ Result := false;
+ Texture := 0;
+
+ {$ifdef GLB_DELPHI}
+ if Instance = 0 then
+ Instance := HInstance;
+
+ if (LoadFromRes) then
+ glBitmap := TglBitmap2D.CreateFromResourceName(Instance, FileName)
+ else
+ {$endif}
+ glBitmap := TglBitmap2D.Create(FileName);
+
+ try
+ glBitmap.DeleteTextureOnFree := False;
+ glBitmap.FreeDataAfterGenTexture := False;
+ glBitmap.GenTexture(True);
+ if (glBitmap.ID > 0) then begin
+ Texture := glBitmap.ID;
+ Result := True;
+ end;
+ finally
+ glBitmap.Free;
+ end;
+end;
+
+
+function LoadCubeMap(PositiveX, NegativeX, PositiveY, NegativeY, PositiveZ, NegativeZ: String; var Texture: Cardinal{$ifdef GLB_DELPHI}; LoadFromRes : Boolean; Instance: Cardinal{$endif}): Boolean;
+var
+ CM: TglBitmapCubeMap;
+begin
+ Texture := 0;
+
+ {$ifdef GLB_DELPHI}
+ if Instance = 0 then
+ Instance := HInstance;
+ {$endif}
+
+ CM := TglBitmapCubeMap.Create;
+ try
+ CM.DeleteTextureOnFree := False;
+
+ // Maps
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, PositiveX)
+ else
+ {$endif}
+ CM.LoadFromFile(PositiveX);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_X);
+
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, NegativeX)
+ else
+ {$endif}
+ CM.LoadFromFile(NegativeX);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_X);
+
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, PositiveY)
+ else
+ {$endif}
+ CM.LoadFromFile(PositiveY);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_Y);
+
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, NegativeY)
+ else
+ {$endif}
+ CM.LoadFromFile(NegativeY);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y);
+
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, PositiveZ)
+ else
+ {$endif}
+ CM.LoadFromFile(PositiveZ);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_Z);
+
+ {$ifdef GLB_DELPHI}
+ if (LoadFromRes) then
+ CM.LoadFromResource(Instance, NegativeZ)
+ else
+ {$endif}
+ CM.LoadFromFile(NegativeZ);
+ CM.GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z);
+
+ Texture := CM.ID;
+ Result := True;
+ finally
+ CM.Free;
+ end;
+end;
+
+
+function LoadNormalMap(Size: Integer; var Texture: Cardinal): Boolean;
+var
+ NM: TglBitmapNormalMap;
+begin
+ Texture := 0;
+
+ NM := TglBitmapNormalMap.Create;
+ try
+ NM.DeleteTextureOnFree := False;
+ NM.GenerateNormalMap(Size);
+
+ Texture := NM.ID;
+ Result := True;
+ finally
+ NM.Free;
+ end;
+end;
+
+
+{*
+** Defaults
+*}
+procedure glBitmapSetDefaultFormat(Format: TglBitmapFormat);
+begin
+ glBitmapDefaultFormat := Format;
+end;
+
+
+procedure glBitmapSetDefaultDeleteTextureOnFree(DeleteTextureOnFree: Boolean);
+begin
+ glBitmapDefaultDeleteTextureOnFree := DeleteTextureOnFree;
+end;
+
+
+procedure glBitmapSetDefaultFilter(Min, Mag: Integer);
+begin
+ glBitmapDefaultFilterMin := Min;
+ glBitmapDefaultFilterMag := Mag;
+end;
+
+
+procedure glBitmapSetDefaultWrap(S: Integer; T: Integer; R: Integer);
+begin
+ glBitmapDefaultWrapS := S;
+ glBitmapDefaultWrapT := T;
+ glBitmapDefaultWrapR := R;
+end;
+
+
+procedure glBitmapSetDefaultFreeDataAfterGenTexture(FreeData: Boolean);
+begin
+ glBitmapDefaultFreeDataAfterGenTextures := FreeData;
+end;
+
+
+function glBitmapGetDefaultFormat: TglBitmapFormat;
+begin
+ Result := glBitmapDefaultFormat;
+end;
+
+
+function glBitmapGetDefaultDeleteTextureOnFree: Boolean;
+begin
+ Result := glBitmapDefaultDeleteTextureOnFree;
+end;
+
+
+procedure glBitmapGetDefaultFilter(var Min, Mag: Integer);
+begin
+ Min := glBitmapDefaultFilterMin;
+ Mag := glBitmapDefaultFilterMag;
+end;
+
+
+procedure glBitmapGetDefaultTextureWrap(var S, T, R: Integer);
+begin
+ S := glBitmapDefaultWrapS;
+ T := glBitmapDefaultWrapT;
+ R := glBitmapDefaultWrapR;
+end;
+
+
+function glBitmapGetDefaultFreeDataAfterGenTexture: Boolean;
+begin
+ Result := glBitmapDefaultFreeDataAfterGenTextures;
+end;
+
+
+{ TglBitmap }
+
+procedure TglBitmap.AfterConstruction;
+begin
+ inherited;
+
+ fID := 0;
+ fTarget := 0;
+ fMipMap := mmMipmap;
+ fIsResident := False;
+
+ // get defaults
+ fFreeDataAfterGenTexture := glBitmapGetDefaultFreeDataAfterGenTexture;
+ fDeleteTextureOnFree := glBitmapGetDefaultDeleteTextureOnFree;
+
+ fFormat := glBitmapGetDefaultFormat;
+
+ glBitmapGetDefaultFilter(fFilterMin, fFilterMag);
+ glBitmapGetDefaultTextureWrap(fWrapS, fWrapT, fWrapR);
+end;
+
+
+procedure TglBitmap.BeforeDestruction;
+begin
+ SetDataPointer(nil, ifEmpty);
+
+ if ((ID > 0) and (fDeleteTextureOnFree)) then
+ glDeleteTextures(1, @ID);
+
+ inherited;
+end;
+
+
+constructor TglBitmap.Create;
+begin
+ {$ifndef GLB_NO_NATIVE_GL}
+ ReadOpenGLExtensions;
+ {$endif}
+
+ if (ClassType = TglBitmap) then
+ raise EglBitmapException.Create('Don''t create TglBitmap directly. Use one of the deviated classes (TglBitmap2D) instead.');
+
+ inherited Create;
+end;
+
+
+constructor TglBitmap.Create(FileName: String);
+begin
+ Create;
+ LoadFromFile(FileName);
+end;
+
+
+constructor TglBitmap.Create(Stream: TStream);
+begin
+ Create;
+ LoadFromStream(Stream);
+end;
+
+
+{$ifdef GLB_DELPHI}
+constructor TglBitmap.CreateFromResourceName(Instance: Cardinal; Resource: String; ResType: PChar);
+begin
+ Create;
+ LoadFromResource(Instance, Resource, ResType);
+end;
+
+
+constructor TglBitmap.Create(Instance: Cardinal; Resource: String; ResType: PChar);
+begin
+ Create;
+ LoadFromResource(Instance, Resource, ResType);
+end;
+
+
+
+constructor TglBitmap.Create(Instance: Cardinal; ResourceID: Integer; ResType: PChar);
+begin
+ Create;
+ LoadFromResourceID(Instance, ResourceID, ResType);
+end;
+{$endif}
+
+
+constructor TglBitmap.Create(Size: TglBitmapPixelPosition;
+ Format: TglBitmapInternalFormat);
+var
+ Image: pByte;
+ ImageSize: Integer;
+begin
+ Create;
+
+ ImageSize := FormatGetImageSize(Size, Format);
+ GetMem(Image, ImageSize);
+ try
+ FillChar(Image^, ImageSize, #$FF);
+
+ SetDataPointer(Image, Format, Size.X, Size.Y);
+ except
+ FreeMem(Image);
+ raise;
+ end;
+end;
+
+
+constructor TglBitmap.Create(Size: TglBitmapPixelPosition;
+ Format: TglBitmapInternalFormat; Func: TglBitmapFunction; CustomData: Pointer);
+begin
+ Create;
+ LoadFromFunc(Size, Func, Format, CustomData);
+end;
+
+
+function TglBitmap.Clone: TglBitmap;
+var
+ Temp: TglBitmap;
+ TempPtr: pByte;
+ Size: Integer;
+begin
+ Temp := ClassType.Create as TglBitmap;
+ try
+ // copy texture data if assigned
+ if Assigned(Data) then begin
+ Size := FormatGetImageSize(glBitmapPosition(Width, Height), InternalFormat);
+
+ GetMem(TempPtr, Size);
+ try
+ Move(Data^, TempPtr^, Size);
+ Temp.SetDataPointer(TempPtr, InternalFormat, Width, Height);
+ except
+ FreeMem(TempPtr);
+ raise;
+ end;
+ end else
+ Temp.SetDataPointer(nil, InternalFormat, Width, Height);
+
+ // copy properties
+ Temp.fID := ID;
+ Temp.fTarget := Target;
+ Temp.fFormat := Format;
+ Temp.fMipMap := MipMap;
+ Temp.fAnisotropic := Anisotropic;
+ Temp.fBorderColor := fBorderColor;
+ Temp.fDeleteTextureOnFree := DeleteTextureOnFree;
+ Temp.fFreeDataAfterGenTexture := FreeDataAfterGenTexture;
+ Temp.fFilterMin := fFilterMin;
+ Temp.fFilterMag := fFilterMag;
+ Temp.fWrapS := fWrapS;
+ Temp.fWrapT := fWrapT;
+ Temp.fWrapR := fWrapR;
+ Temp.fFilename := fFilename;
+ Temp.fCustomName := fCustomName;
+ Temp.fCustomNameW := fCustomNameW;
+ Temp.fCustomDataPointer := fCustomDataPointer;
+
+ Result := Temp;
+ except
+ FreeAndNil(Temp);
+ raise;
+ end;
+end;
+
+
+procedure TglBitmap.LoadFromFile(FileName: String);
+var
+ FS: TFileStream;
+begin
+ fFilename := FileName;
+
+ FS := TFileStream.Create(FileName, fmOpenRead);
+ try
+ FS.Position := 0;
+
+ LoadFromStream(FS);
+ finally
+ FS.Free;
+ end;
+end;
+
+
+procedure TglBitmap.LoadFromStream(Stream: TStream);
+begin
+ {$ifdef GLB_SUPPORT_PNG_READ}
+ if not LoadPNG(Stream) then
+ {$endif}
+ {$ifdef GLB_SUPPORT_JPEG_READ}
+ if not LoadJPEG(Stream) then
+ {$endif}
+ if not LoadDDS(Stream) then
+ if not LoadTGA(Stream) then
+ if not LoadBMP(Stream) then
+ raise EglBitmapException.Create('LoadFromStream - Couldn''t load Stream. It''s possible to be an unknow Streamtype.');
+end;
+
+
+{$ifdef GLB_DELPHI}
+procedure TglBitmap.LoadFromResource(Instance: Cardinal; Resource: String; ResType: PChar);
+var
+ RS: TResourceStream;
+ TempPos: Integer;
+ ResTypeStr: String;
+ TempResType: PChar;
+begin
+ if Assigned(ResType) then
+ TempResType := ResType
+ else
+ begin
+ TempPos := Pos('.', Resource);
+ ResTypeStr := UpperCase(Copy(Resource, TempPos + 1, Length(Resource) - TempPos));
+ Resource := UpperCase(Copy(Resource, 0, TempPos -1));
+ TempResType := PChar(ResTypeStr);
+ end;
+
+ RS := TResourceStream.Create(Instance, Resource, TempResType);
+ try
+ LoadFromStream(RS);
+ finally
+ RS.Free;
+ end;
+end;
+
+
+procedure TglBitmap.LoadFromResourceID(Instance: Cardinal; ResourceID: Integer; ResType: PChar);
+var
+ RS: TResourceStream;
+begin
+ RS := TResourceStream.CreateFromID(Instance, ResourceID, ResType);
+ try
+ LoadFromStream(RS);
+ finally
+ RS.Free;
+ end;
+end;
+{$endif}
+
+
+
+procedure TglBitmap.LoadFromFunc(Size: TglBitmapPixelPosition;
+ Func: TglBitmapFunction; Format: TglBitmapInternalFormat; CustomData: Pointer);
+var
+ Image: pByte;
+ ImageSize: Integer;
+begin
+ ImageSize := FormatGetImageSize(Size, Format);
+ GetMem(Image, ImageSize);
+ try
+ FillChar(Image^, ImageSize, #$FF);
+
+ SetDataPointer(Image, Format, Size.X, Size.Y);
+ except
+ FreeMem(Image);
+ raise;
+ end;
+
+ AddFunc(Self, Func, False, Format, CustomData)
+end;
+
+
+procedure TglBitmap.SaveToFile(FileName: String; FileType: TglBitmapFileType);
+var
+ FS: TFileStream;
+begin
+ FS := TFileStream.Create(FileName, fmCreate);
+ try
+ FS.Position := 0;
+ SaveToStream(FS, FileType);
+ finally
+ FS.Free;
+ end;
+end;
+
+
+procedure TglBitmap.SaveToStream(Stream: TStream; FileType: TglBitmapFileType);
+begin
+ case FileType of
+ {$ifdef GLB_SUPPORT_PNG_WRITE}
+ ftPNG: SavePng(Stream);
+ {$endif}
+ {$ifdef GLB_SUPPORT_JPEG_WRITE}
+ ftJPEG: SaveJPEG(Stream);
+ {$endif}
+ ftDDS: SaveDDS(Stream);
+ ftTGA: SaveTGA(Stream);
+ ftBMP: SaveBMP(Stream);
+ end;
+end;
+
+
+{$ifdef GLB_SDL}
+function TglBitmap.AssignToSurface(out Surface: PSDL_Surface): boolean;
+var
+ Row, RowSize: Integer;
+ pSource, pData: PByte;
+ TempDepth: Integer;
+ Pix: TglBitmapPixelData;
+
+ function GetRowPointer(Row: Integer): pByte;
+ begin
+ Result := Surface.pixels;
+ Inc(Result, Row * RowSize);
+ end;
+
+begin
+ Result := False;
+
+ if not FormatIsUncompressed(InternalFormat) then
+ raise EglBitmapUnsupportedInternalFormat.Create('AssignToSurface - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ if Assigned(Data) then begin
+ case Trunc(FormatGetSize(InternalFormat)) of
+ 1: TempDepth := 8;
+ 2: TempDepth := 16;
+ 3: TempDepth := 24;
+ 4: TempDepth := 32;
+ else
+ raise EglBitmapException.Create('AssignToSurface - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+
+ FormatPreparePixel(Pix, InternalFormat);
+
+ with Pix.PixelDesc do
+ Surface := SDL_CreateRGBSurface(SDL_SWSURFACE, Width, Height, TempDepth, RedRange shl RedShift, GreenRange shl GreenShift, BlueRange shl BlueShift, AlphaRange shl AlphaShift);
+
+ pSource := Data;
+ RowSize := Trunc(FileWidth * FormatGetSize(InternalFormat));
+
+ for Row := 0 to FileHeight -1 do begin
+ pData := GetRowPointer(Row);
+
+ if Assigned(pData) then begin
+ Move(pSource^, pData^, RowSize);
+ Inc(pSource, RowSize);
+ end;
+ end;
+
+ Result := True;
+ end;
+end;
+
+
+function TglBitmap.AssignFromSurface(const Surface: PSDL_Surface): boolean;
+var
+ pSource, pData, pTempData: PByte;
+ Row, RowSize, TempWidth, TempHeight: Integer;
+ IntFormat: TglBitmapInternalFormat;
+
+ function GetRowPointer(Row: Integer): pByte;
+ begin
+ Result := Surface^.pixels;
+ Inc(Result, Row * RowSize);
+ end;
+
+begin
+ Result := False;
+
+ if (Assigned(Surface)) then begin
+ with Surface^.format^ do begin
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifLuminance) then
+ IntFormat := ifLuminance
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifLuminanceAlpha) then
+ IntFormat := ifLuminanceAlpha
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifRGBA4) then
+ IntFormat := ifRGBA4
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifR5G6B5) then
+ IntFormat := ifR5G6B5
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifRGB5A1) then
+ IntFormat := ifRGB5A1
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifBGR8) then
+ IntFormat := ifBGR8
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifRGB8) then
+ IntFormat := ifRGB8
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifBGRA8) then
+ IntFormat := ifBGRA8
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifRGBA8) then
+ IntFormat := ifRGBA8
+ else
+
+ if FormatCheckFormat(RMask, GMask, BMask, AMask, ifRGB10A2) then
+ IntFormat := ifRGB10A2
+ else
+ raise EglBitmapException.Create('AssignFromSurface - Invalid Pixelformat.');
+ end;
+
+ TempWidth := Surface^.w;
+ TempHeight := Surface^.h;
+
+ RowSize := Trunc(TempWidth * FormatGetSize(IntFormat));
+
+ GetMem(pData, TempHeight * RowSize);
+ try
+ pTempData := pData;
+
+ for Row := 0 to TempHeight -1 do begin
+ pSource := GetRowPointer(Row);
+
+ if (Assigned(pSource)) then begin
+ Move(pSource^, pTempData^, RowSize);
+ Inc(pTempData, RowSize);
+ end;
+ end;
+
+ SetDataPointer(pData, IntFormat, TempWidth, TempHeight);
+
+ Result := True;
+ except
+ FreeMem(pData);
+ raise;
+ end;
+ end;
+end;
+
+
+function TglBitmap.AssignAlphaToSurface(out Surface: PSDL_Surface): boolean;
+var
+ Row, Col, AlphaInterleave: Integer;
+ pSource, pDest: PByte;
+
+ function GetRowPointer(Row: Integer): pByte;
+ begin
+ Result := Surface.pixels;
+ Inc(Result, Row * Width);
+ end;
+
+begin
+ Result := False;
+
+ if Assigned(Data) then begin
+ if InternalFormat in [ifAlpha, ifLuminanceAlpha, ifBGRA8, ifRGBA8] then begin
+ Surface := SDL_CreateRGBSurface(SDL_SWSURFACE, Width, Height, 8, $FF, $FF, $FF, 0);
+
+ case InternalFormat of
+ ifLuminanceAlpha:
+ AlphaInterleave := 1;
+ ifBGRA8, ifRGBA8:
+ AlphaInterleave := 3;
+ else
+ AlphaInterleave := 0;
+ end;
+
+ // Copy Data
+ pSource := Data;
+
+ for Row := 0 to Height -1 do begin
+ pDest := GetRowPointer(Row);
+
+ if Assigned(pDest) then begin
+ for Col := 0 to Width -1 do begin
+ Inc(pSource, AlphaInterleave);
+ pDest^ := pSource^;
+ Inc(pDest);
+ Inc(pSource);
+ end;
+ end;
+ end;
+
+ Result := True;
+ end;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromSurface(Surface: PSDL_Surface; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ glBitmap: TglBitmap2D;
+begin
+ glBitmap := TglBitmap2D.Create;
+ try
+ glBitmap.AssignFromSurface(Surface);
+
+ Result := AddAlphaFromglBitmap(glBitmap, Func, CustomData);
+ finally
+ glBitmap.Free;
+ end;
+end;
+{$endif}
+
+
+{$ifdef GLB_DELPHI}
+function TglBitmap.AssignFromBitmap(const Bitmap: TBitmap): boolean;
+var
+ pSource, pData, pTempData: PByte;
+ Row, RowSize, TempWidth, TempHeight: Integer;
+ IntFormat: TglBitmapInternalFormat;
+begin
+ Result := False;
+
+ if (Assigned(Bitmap)) then begin
+ case Bitmap.PixelFormat of
+ pf8bit:
+ IntFormat := ifLuminance;
+ pf15bit:
+ IntFormat := ifRGB5A1;
+ pf16bit:
+ IntFormat := ifR5G6B5;
+ pf24bit:
+ IntFormat := ifBGR8;
+ pf32bit:
+ IntFormat := ifBGRA8;
+ else
+ raise EglBitmapException.Create('AssignFromBitmap - Invalid Pixelformat.');
+ end;
+
+ TempWidth := Bitmap.Width;
+ TempHeight := Bitmap.Height;
+
+ RowSize := Trunc(TempWidth * FormatGetSize(IntFormat));
+
+ GetMem(pData, TempHeight * RowSize);
+ try
+ pTempData := pData;
+
+ for Row := 0 to TempHeight -1 do begin
+ pSource := Bitmap.Scanline[Row];
+
+ if (Assigned(pSource)) then begin
+ Move(pSource^, pTempData^, RowSize);
+ Inc(pTempData, RowSize);
+ end;
+ end;
+
+ SetDataPointer(pData, IntFormat, TempWidth, TempHeight);
+
+ Result := True;
+ except
+ FreeMem(pData);
+ raise;
+ end;
+ end;
+end;
+
+
+function TglBitmap.AssignToBitmap(const Bitmap: TBitmap): boolean;
+var
+ Row: Integer;
+ pSource, pData: PByte;
+begin
+ Result := False;
+
+ if Assigned(Data) then begin
+ if Assigned(Bitmap) then begin
+ Bitmap.Width := Width;
+ Bitmap.Height := Height;
+
+ case InternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ begin
+ Bitmap.PixelFormat := pf8bit;
+ Bitmap.Palette := CreateGrayPalette;
+ end;
+ ifRGB5A1:
+ Bitmap.PixelFormat := pf15bit;
+ ifR5G6B5:
+ Bitmap.PixelFormat := pf16bit;
+ ifRGB8, ifBGR8:
+ Bitmap.PixelFormat := pf24bit;
+ ifRGBA8, ifBGRA8:
+ Bitmap.PixelFormat := pf32bit;
+ else
+ raise EglBitmapException.Create('AssignToBitmap - Invalid Pixelformat.');
+ end;
+
+ pSource := Data;
+ for Row := 0 to FileHeight -1 do begin
+ pData := Bitmap.Scanline[Row];
+
+ Move(pSource^, pData^, fRowSize);
+ Inc(pSource, fRowSize);
+
+ // swap RGB(A) to BGR(A)
+ if InternalFormat in [ifRGB8, ifRGBA8] then
+ SwapRGB(pData, FileWidth, InternalFormat = ifRGBA8);
+ end;
+
+ Result := True;
+ end;
+ end;
+end;
+
+
+function TglBitmap.AssignAlphaToBitmap(const Bitmap: TBitmap): boolean;
+var
+ Row, Col, AlphaInterleave: Integer;
+ pSource, pDest: PByte;
+begin
+ Result := False;
+
+ if Assigned(Data) then begin
+ if InternalFormat in [ifAlpha, ifLuminanceAlpha, ifRGBA8, ifBGRA8] then begin
+ if Assigned(Bitmap) then begin
+ Bitmap.PixelFormat := pf8bit;
+ Bitmap.Palette := CreateGrayPalette;
+ Bitmap.Width := Width;
+ Bitmap.Height := Height;
+
+ case InternalFormat of
+ ifLuminanceAlpha:
+ AlphaInterleave := 1;
+ ifRGBA8, ifBGRA8:
+ AlphaInterleave := 3;
+ else
+ AlphaInterleave := 0;
+ end;
+
+ // Copy Data
+ pSource := Data;
+
+ for Row := 0 to Height -1 do begin
+ pDest := Bitmap.Scanline[Row];
+
+ if Assigned(pDest) then begin
+ for Col := 0 to Width -1 do begin
+ Inc(pSource, AlphaInterleave);
+ pDest^ := pSource^;
+ Inc(pDest);
+ Inc(pSource);
+ end;
+ end;
+ end;
+
+ Result := True;
+ end;
+ end;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromBitmap(Bitmap: TBitmap; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ glBitmap: TglBitmap2D;
+begin
+ glBitmap := TglBitmap2D.Create;
+ try
+ glBitmap.AssignFromBitmap(Bitmap);
+
+ Result := AddAlphaFromglBitmap(glBitmap, Func, CustomData);
+ finally
+ glBitmap.Free;
+ end;
+end;
+{$endif}
+
+
+function TglBitmap.AddAlphaFromFile(FileName: String; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ FS: TFileStream;
+begin
+ FS := TFileStream.Create(FileName, fmOpenRead);
+ try
+ Result := AddAlphaFromStream(FS, Func, CustomData);
+ finally
+ FS.Free;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromStream(Stream: TStream; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ glBitmap: TglBitmap2D;
+begin
+ glBitmap := TglBitmap2D.Create(Stream);
+ try
+ Result := AddAlphaFromglBitmap(glBitmap, Func, CustomData);
+ finally
+ glBitmap.Free;
+ end;
+end;
+
+
+{$ifdef GLB_DELPHI}
+function TglBitmap.AddAlphaFromResource(Instance: Cardinal; Resource: String;
+ ResType: PChar; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ RS: TResourceStream;
+ TempPos: Integer;
+ ResTypeStr: String;
+ TempResType: PChar;
+begin
+ if Assigned(ResType) then
+ TempResType := ResType
+ else
+ begin
+ TempPos := Pos('.', Resource);
+ ResTypeStr := UpperCase(Copy(Resource, TempPos + 1, Length(Resource) - TempPos));
+ Resource := UpperCase(Copy(Resource, 0, TempPos -1));
+ TempResType := PChar(ResTypeStr);
+ end;
+
+ RS := TResourceStream.Create(Instance, Resource, TempResType);
+ try
+ Result := AddAlphaFromStream(RS, Func, CustomData);
+ finally
+ RS.Free;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromResourceID(Instance: Cardinal; ResourceID: Integer;
+ ResType: PChar; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ RS: TResourceStream;
+begin
+ RS := TResourceStream.CreateFromID(Instance, ResourceID, ResType);
+ try
+ Result := AddAlphaFromStream(RS, Func, CustomData);
+ finally
+ RS.Free;
+ end;
+end;
+{$endif}
+
+
+procedure glBitmapColorKeyAlphaFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do begin
+ Dest.Red := Source.Red;
+ Dest.Green := Source.Green;
+ Dest.Blue := Source.Blue;
+
+ with TglBitmapPixelData(CustomData^) do
+ if ((Dest.Red <= Red ) and (Dest.Red >= PixelDesc.RedRange ) and
+ (Dest.Green <= Green) and (Dest.Green >= PixelDesc.GreenRange) and
+ (Dest.Blue <= Blue ) and (Dest.Blue >= PixelDesc.BlueRange )) then
+ Dest.Alpha := 0
+ else
+ Dest.Alpha := Dest.PixelDesc.AlphaRange;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromColorKey(Red, Green, Blue, Deviation: Byte): Boolean;
+begin
+ Result := AddAlphaFromColorKeyFloat(Red / $FF, Green / $FF, Blue / $FF, Deviation / $FF);
+end;
+
+
+function TglBitmap.AddAlphaFromColorKeyRange(Red, Green, Blue: Cardinal; Deviation: Cardinal = 0): Boolean;
+var
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, FormatGetWithAlpha(InternalFormat));
+
+ Result := AddAlphaFromColorKeyFloat(
+ Red / PixelData.PixelDesc.RedRange,
+ Green / PixelData.PixelDesc.GreenRange,
+ Blue / PixelData.PixelDesc.BlueRange,
+ Deviation / Max(PixelData.PixelDesc.RedRange, Max(PixelData.PixelDesc.GreenRange, PixelData.PixelDesc.BlueRange)));
+end;
+
+
+function TglBitmap.AddAlphaFromColorKeyFloat(Red, Green, Blue: Single; Deviation: Single = 0): Boolean;
+var
+ TempR, TempG, TempB: Cardinal;
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, FormatGetWithAlpha(InternalFormat));
+
+ // Calculate Colorrange
+ with PixelData.PixelDesc do begin
+ TempR := Trunc(RedRange * Deviation);
+ TempG := Trunc(GreenRange * Deviation);
+ TempB := Trunc(BlueRange * Deviation);
+
+ PixelData.Red := Min(RedRange, Trunc(RedRange * Red) + TempR);
+ RedRange := Max(0, Trunc(RedRange * Red) - TempR);
+ PixelData.Green := Min(GreenRange, Trunc(GreenRange * Green) + TempG);
+ GreenRange := Max(0, Trunc(GreenRange * Green) - TempG);
+ PixelData.Blue := Min(BlueRange, Trunc(BlueRange * Blue) + TempB);
+ BlueRange := Max(0, Trunc(BlueRange * Blue) - TempB);
+ PixelData.Alpha := 0;
+ AlphaRange := 0;
+ end;
+
+ Result := AddAlphaFromFunc(glBitmapColorKeyAlphaFunc, @PixelData);
+end;
+
+
+procedure glBitmapValueAlphaFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do begin
+ Dest.Red := Source.Red;
+ Dest.Green := Source.Green;
+ Dest.Blue := Source.Blue;
+
+ with TglBitmapPixelData(CustomData^) do
+ Dest.Alpha := Alpha;
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromValue(Alpha: Byte): Boolean;
+begin
+ Result := AddAlphaFromValueFloat(Alpha / $FF);
+end;
+
+
+function TglBitmap.AddAlphaFromValueFloat(Alpha: Single): Boolean;
+var
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, FormatGetWithAlpha(InternalFormat));
+
+ with PixelData.PixelDesc do
+ PixelData.Alpha := Min(AlphaRange, Max(0, Round(AlphaRange * Alpha)));
+
+ Result := AddAlphaFromFunc(glBitmapValueAlphaFunc, @PixelData);
+end;
+
+
+function TglBitmap.AddAlphaFromValueRange(Alpha: Cardinal): Boolean;
+var
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, FormatGetWithAlpha(InternalFormat));
+
+ Result := AddAlphaFromValueFloat(Alpha / PixelData.PixelDesc.AlphaRange);
+end;
+
+
+procedure glBitmapInvertFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do begin
+ Dest.Red := Source.Red;
+ Dest.Green := Source.Green;
+ Dest.Blue := Source.Blue;
+ Dest.Alpha := Source.Alpha;
+
+ if (Integer(CustomData) and $1 > 0) then begin
+ Dest.Red := Dest.Red xor Dest.PixelDesc.RedRange;
+ Dest.Green := Dest.Green xor Dest.PixelDesc.GreenRange;
+ Dest.Blue := Dest.Blue xor Dest.PixelDesc.BlueRange;
+ end;
+
+ if (Integer(CustomData) and $2 > 0) then begin
+ Dest.Alpha := Dest.Alpha xor Dest.PixelDesc.AlphaRange;
+ end;
+ end;
+end;
+
+
+procedure TglBitmap.Invert(UseRGB, UseAlpha: Boolean);
+begin
+ if ((UseRGB) or (UseAlpha)) then
+ AddFunc(glBitmapInvertFunc, False, Pointer(Integer(UseAlpha) shl 1 or Integer(UseRGB)));
+end;
+
+
+procedure TglBitmap.SetFilter(Min, Mag: Integer);
+begin
+ case Min of
+ GL_NEAREST:
+ fFilterMin := GL_NEAREST;
+ GL_LINEAR:
+ fFilterMin := GL_LINEAR;
+ GL_NEAREST_MIPMAP_NEAREST:
+ fFilterMin := GL_NEAREST_MIPMAP_NEAREST;
+ GL_LINEAR_MIPMAP_NEAREST:
+ fFilterMin := GL_LINEAR_MIPMAP_NEAREST;
+ GL_NEAREST_MIPMAP_LINEAR:
+ fFilterMin := GL_NEAREST_MIPMAP_LINEAR;
+ GL_LINEAR_MIPMAP_LINEAR:
+ fFilterMin := GL_LINEAR_MIPMAP_LINEAR;
+ else
+ raise EglBitmapException.Create('SetFilter - Unknow Minfilter.');
+ end;
+
+ case Mag of
+ GL_NEAREST:
+ fFilterMag := GL_NEAREST;
+ GL_LINEAR:
+ fFilterMag := GL_LINEAR;
+ else
+ raise EglBitmapException.Create('SetFilter - Unknow Magfilter.');
+ end;
+
+ // If texture is created then assign filter
+ if ID > 0 then begin
+ Bind(False);
+
+ glTexParameteri(Target, GL_TEXTURE_MAG_FILTER, fFilterMag);
+
+ if (MipMap = mmNone) or (Target = GL_TEXTURE_RECTANGLE_ARB) then begin
+ case fFilterMin of
+ GL_NEAREST, GL_LINEAR:
+ glTexParameteri(Target, GL_TEXTURE_MIN_FILTER, fFilterMin);
+ GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST_MIPMAP_LINEAR:
+ glTexParameteri(Target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR_MIPMAP_LINEAR:
+ glTexParameteri(Target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ end;
+ end else
+ glTexParameteri(Target, GL_TEXTURE_MIN_FILTER, fFilterMin);
+ end;
+end;
+
+
+procedure TglBitmap.SetWrap(S: Integer; T: Integer; R: Integer);
+begin
+ case S of
+ GL_CLAMP:
+ fWrapS := GL_CLAMP;
+ GL_REPEAT:
+ fWrapS := GL_REPEAT;
+ GL_CLAMP_TO_EDGE:
+ begin
+ if GL_VERSION_1_2 or GL_EXT_texture_edge_clamp then
+ fWrapS := GL_CLAMP_TO_EDGE
+ else
+ fWrapS := GL_CLAMP;
+ end;
+ GL_CLAMP_TO_BORDER:
+ begin
+ if GL_VERSION_1_3 or GL_ARB_texture_border_clamp then
+ fWrapS := GL_CLAMP_TO_BORDER
+ else
+ fWrapS := GL_CLAMP;
+ end;
+ GL_MIRRORED_REPEAT:
+ begin
+ if GL_VERSION_1_4 or GL_ARB_texture_mirrored_repeat or GL_IBM_texture_mirrored_repeat then
+ fWrapS := GL_MIRRORED_REPEAT
+ else
+ raise EglBitmapException.Create('SetWrap - Unsupported Texturewrap GL_MIRRORED_REPEAT (S).');
+ end;
+ else
+ raise EglBitmapException.Create('SetWrap - Unknow Texturewrap (S).');
+ end;
+
+ case T of
+ GL_CLAMP:
+ fWrapT := GL_CLAMP;
+ GL_REPEAT:
+ fWrapT := GL_REPEAT;
+ GL_CLAMP_TO_EDGE:
+ begin
+ if GL_VERSION_1_2 or GL_EXT_texture_edge_clamp then
+ fWrapT := GL_CLAMP_TO_EDGE
+ else
+ fWrapT := GL_CLAMP;
+ end;
+ GL_CLAMP_TO_BORDER:
+ begin
+ if GL_VERSION_1_3 or GL_ARB_texture_border_clamp then
+ fWrapT := GL_CLAMP_TO_BORDER
+ else
+ fWrapT := GL_CLAMP;
+ end;
+ GL_MIRRORED_REPEAT:
+ begin
+ if GL_VERSION_1_4 or GL_ARB_texture_mirrored_repeat or GL_IBM_texture_mirrored_repeat then
+ fWrapT := GL_MIRRORED_REPEAT
+ else
+ raise EglBitmapException.Create('SetWrap - Unsupported Texturewrap GL_MIRRORED_REPEAT (T).');
+ end;
+ else
+ raise EglBitmapException.Create('SetWrap - Unknow Texturewrap (T).');
+ end;
+
+ case R of
+ GL_CLAMP:
+ fWrapR := GL_CLAMP;
+ GL_REPEAT:
+ fWrapR := GL_REPEAT;
+ GL_CLAMP_TO_EDGE:
+ begin
+ if GL_VERSION_1_2 or GL_EXT_texture_edge_clamp then
+ fWrapR := GL_CLAMP_TO_EDGE
+ else
+ fWrapR := GL_CLAMP;
+ end;
+ GL_CLAMP_TO_BORDER:
+ begin
+ if GL_VERSION_1_3 or GL_ARB_texture_border_clamp then
+ fWrapR := GL_CLAMP_TO_BORDER
+ else
+ fWrapR := GL_CLAMP;
+ end;
+ GL_MIRRORED_REPEAT:
+ begin
+ if GL_VERSION_1_4 or GL_ARB_texture_mirrored_repeat or GL_IBM_texture_mirrored_repeat then
+ fWrapR := GL_MIRRORED_REPEAT
+ else
+ raise EglBitmapException.Create('SetWrap - Unsupported Texturewrap GL_MIRRORED_REPEAT (R).');
+ end;
+ else
+ raise EglBitmapException.Create('SetWrap - Unknow Texturewrap (R).');
+ end;
+
+ if ID > 0 then begin
+ Bind (False);
+ glTexParameteri(Target, GL_TEXTURE_WRAP_S, fWrapS);
+ glTexParameteri(Target, GL_TEXTURE_WRAP_T, fWrapT);
+ glTexParameteri(Target, GL_TEXTURE_WRAP_R, fWrapR);
+ end;
+end;
+
+
+procedure TglBitmap.SetDataPointer(NewData: PByte; Format: TglBitmapInternalFormat; Width, Height: Integer);
+begin
+ // Data
+ if Data <> NewData then begin
+ if (Assigned(Data))
+ then FreeMem(Data);
+
+ fData := NewData;
+ end;
+
+ if Data = nil then begin
+ fInternalFormat := ifEmpty;
+ fPixelSize := 0;
+ fRowSize := 0;
+ end else begin
+ if Width <> -1 then begin
+ fDimension.Fields := fDimension.Fields + [ffX];
+ fDimension.X := Width;
+ end;
+
+ if Height <> -1 then begin
+ fDimension.Fields := fDimension.Fields + [ffY];
+ fDimension.Y := Height;
+ end;
+
+ fInternalFormat := Format;
+ fPixelSize := Trunc(FormatGetSize(InternalFormat));
+ fRowSize := Trunc(FormatGetSize(InternalFormat) * Self.Width);
+ end;
+end;
+
+{$ifdef GLB_SUPPORT_PNG_READ}
+{$ifdef GLB_LIB_PNG}
+procedure glBitmap_libPNG_read_func(png: png_structp; buffer: png_bytep; size: cardinal); cdecl;
+begin
+ TStream(png_get_io_ptr(png)).Read(buffer^, size);
+end;
+{$endif}
+
+
+function TglBitmap.LoadPNG(Stream: TStream): Boolean;
+{$ifdef GLB_SDL_IMAGE}
+var
+ Surface: PSDL_Surface;
+ RWops: PSDL_RWops;
+begin
+ Result := False;
+
+ RWops := glBitmapCreateRWops(Stream);
+ try
+ if IMG_isPNG(RWops) > 0 then begin
+ Surface := IMG_LoadPNG_RW(RWops);
+ try
+ AssignFromSurface(Surface);
+ Result := True;
+ finally
+ SDL_FreeSurface(Surface);
+ end;
+ end;
+ finally
+ SDL_FreeRW(RWops);
+ end;
+end;
+{$endif}
+{$ifdef GLB_LIB_PNG}
+var
+ StreamPos: Int64;
+ signature: array [0..7] of byte;
+ png: png_structp;
+ png_info: png_infop;
+
+ TempHeight, TempWidth: Integer;
+ Format: TglBitmapInternalFormat;
+
+ png_data: pByte;
+ png_rows: array of pByte;
+ Row, LineSize: Integer;
+begin
+ Result := False;
+
+ if not init_libPNG then
+ raise Exception.Create('LoadPNG - unable to initialize libPNG.');
+
+ try
+ // signature
+ StreamPos := Stream.Position;
+ Stream.Read(signature, 8);
+ Stream.Position := StreamPos;
+
+ if png_check_sig(@signature, 8) <> 0 then begin
+ // png read struct
+ png := png_create_read_struct(PNG_LIBPNG_VER_STRING, nil, nil, nil);
+ if png = nil then
+ raise EglBitmapException.Create('LoadPng - couldn''t create read struct.');
+
+ // png info
+ png_info := png_create_info_struct(png);
+ if png_info = nil then begin
+ png_destroy_read_struct(@png, nil, nil);
+ raise EglBitmapException.Create('LoadPng - couldn''t create info struct.');
+ end;
+
+ // set read callback
+ png_set_read_fn(png, stream, glBitmap_libPNG_read_func);
+
+ // read informations
+ png_read_info(png, png_info);
+
+ // size
+ TempHeight := png_get_image_height(png, png_info);
+ TempWidth := png_get_image_width(png, png_info);
+
+ // format
+ case png_get_color_type(png, png_info) of
+ PNG_COLOR_TYPE_GRAY:
+ Format := ifLuminance;
+ PNG_COLOR_TYPE_GRAY_ALPHA:
+ Format := ifLuminanceAlpha;
+ PNG_COLOR_TYPE_RGB:
+ Format := ifRGB8;
+ PNG_COLOR_TYPE_RGB_ALPHA:
+ Format := ifRGBA8;
+ else
+ raise EglBitmapException.Create ('LoadPng - Unsupported Colortype found.');
+ end;
+
+ // cut upper 8 bit from 16 bit formats
+ if png_get_bit_depth(png, png_info) > 8 then
+ png_set_strip_16(png);
+
+ // expand bitdepth smaller than 8
+ if png_get_bit_depth(png, png_info) < 8 then
+ png_set_expand(png);
+
+ // allocating mem for scanlines
+ LineSize := png_get_rowbytes(png, png_info);
+ GetMem(png_data, TempHeight * LineSize);
+ try
+ SetLength(png_rows, TempHeight);
+ for Row := Low(png_rows) to High(png_rows) do begin
+ png_rows[Row] := png_data;
+ Inc(png_rows[Row], Row * LineSize);
+ end;
+
+ // read complete image into scanlines
+ png_read_image(png, @png_rows[0]);
+
+ // read end
+ png_read_end(png, png_info);
+
+ // destroy read struct
+ png_destroy_read_struct(@png, @png_info, nil);
+
+ SetLength(png_rows, 0);
+
+ // set new data
+ SetDataPointer(png_data, Format, TempWidth, TempHeight);
+
+ Result := True;
+ except
+ FreeMem(png_data);
+ raise;
+ end;
+ end;
+ finally
+ quit_libPNG;
+ end;
+end;
+{$endif}
+{$ifdef GLB_PNGIMAGE}
+var
+ StreamPos: Int64;
+ Png: TPNGObject;
+ Header: Array[0..7] of Byte;
+ Row, Col, PixSize, LineSize: Integer;
+ NewImage, pSource, pDest, pAlpha: pByte;
+ Format: TglBitmapInternalFormat;
+
+const
+ PngHeader: Array[0..7] of Byte = (#137, #80, #78, #71, #13, #10, #26, #10);
+
+begin
+ Result := False;
+
+ StreamPos := Stream.Position;
+ Stream.Read(Header[0], SizeOf(Header));
+ Stream.Position := StreamPos;
+
+ {Test if the header matches}
+ if Header = PngHeader then begin
+ Png := TPNGObject.Create;
+ try
+ Png.LoadFromStream(Stream);
+
+ case Png.Header.ColorType of
+ COLOR_GRAYSCALE:
+ Format := ifLuminance;
+ COLOR_GRAYSCALEALPHA:
+ Format := ifLuminanceAlpha;
+ COLOR_RGB:
+ Format := ifBGR8;
+ COLOR_RGBALPHA:
+ Format := ifBGRA8;
+ else
+ raise EglBitmapException.Create ('LoadPng - Unsupported Colortype found.');
+ end;
+
+ PixSize := Trunc(FormatGetSize(Format));
+ LineSize := Integer(Png.Header.Width) * PixSize;
+
+ GetMem(NewImage, LineSize * Integer(Png.Header.Height));
+ try
+ pDest := NewImage;
+
+ case Png.Header.ColorType of
+ COLOR_RGB, COLOR_GRAYSCALE:
+ begin
+ for Row := 0 to Png.Height -1 do begin
+ Move (Png.Scanline[Row]^, pDest^, LineSize);
+ Inc(pDest, LineSize);
+ end;
+ end;
+ COLOR_RGBALPHA, COLOR_GRAYSCALEALPHA:
+ begin
+ PixSize := PixSize -1;
+
+ for Row := 0 to Png.Height -1 do begin
+ pSource := Png.Scanline[Row];
+ pAlpha := pByte(Png.AlphaScanline[Row]);
+
+ for Col := 0 to Png.Width -1 do begin
+ Move (pSource^, pDest^, PixSize);
+ Inc(pSource, PixSize);
+ Inc(pDest, PixSize);
+
+ pDest^ := pAlpha^;
+ inc(pAlpha);
+ Inc(pDest);
+ end;
+ end;
+ end;
+ else
+ raise EglBitmapException.Create ('LoadPng - Unsupported Colortype found.');
+ end;
+
+ SetDataPointer(NewImage, Format, Png.Header.Width, Png.Header.Height);
+
+ Result := True;
+ except
+ FreeMem(NewImage);
+ raise;
+ end;
+ finally
+ Png.Free;
+ end;
+ end;
+end;
+{$endif}
+{$endif}
+
+
+{$ifdef GLB_LIB_JPEG}
+type
+ glBitmap_libJPEG_source_mgr_ptr = ^glBitmap_libJPEG_source_mgr;
+ glBitmap_libJPEG_source_mgr = record
+ pub: jpeg_source_mgr;
+
+ SrcStream: TStream;
+ SrcBuffer: array [1..4096] of byte;
+ end;
+
+
+ glBitmap_libJPEG_dest_mgr_ptr = ^glBitmap_libJPEG_dest_mgr;
+ glBitmap_libJPEG_dest_mgr = record
+ pub: jpeg_destination_mgr;
+
+ DestStream: TStream;
+ DestBuffer: array [1..4096] of byte;
+ end;
+
+
+
+procedure glBitmap_libJPEG_error_exit(cinfo: j_common_ptr); cdecl;
+//var
+// Msg: String;
+begin
+// SetLength(Msg, 256);
+// cinfo^.err^.format_message(cinfo, pChar(Msg));
+
+// Writeln('ERROR [' + IntToStr(cinfo^.err^.msg_code) + '] ' + Msg);
+
+// cinfo^.global_state := 0;
+
+// jpeg_abort(cinfo);
+end;
+
+
+procedure glBitmap_libJPEG_output_message(cinfo: j_common_ptr); cdecl;
+//var
+// Msg: String;
+begin
+// SetLength(Msg, 256);
+// cinfo^.err^.format_message(cinfo, pChar(Msg));
+
+// Writeln('OUTPUT [' + IntToStr(cinfo^.err^.msg_code) + '] ' + Msg);
+
+// cinfo^.global_state := 0;
+end;
+
+
+procedure glBitmap_libJPEG_init_source(cinfo: j_decompress_ptr); cdecl;
+begin
+end;
+
+
+function glBitmap_libJPEG_fill_input_buffer(cinfo: j_decompress_ptr): boolean; cdecl;
+var
+ src: glBitmap_libJPEG_source_mgr_ptr;
+ bytes: integer;
+begin
+ src := glBitmap_libJPEG_source_mgr_ptr(cinfo^.src);
+
+ bytes := src^.SrcStream.Read(src^.SrcBuffer[1], 4096);
+ if (bytes <= 0) then begin
+ src^.SrcBuffer[1] := $FF;
+ src^.SrcBuffer[2] := JPEG_EOI;
+ bytes := 2;
+ end;
+
+ src^.pub.next_input_byte := @(src^.SrcBuffer[1]);
+ src^.pub.bytes_in_buffer := bytes;
+
+ result := true;
+end;
+
+
+procedure glBitmap_libJPEG_skip_input_data(cinfo: j_decompress_ptr; num_bytes: Longint); cdecl;
+var
+ src: glBitmap_libJPEG_source_mgr_ptr;
+begin
+ src := glBitmap_libJPEG_source_mgr_ptr(cinfo^.src);
+
+ if num_bytes > 0 then begin
+ // wanted byte isn't in buffer so set stream position and read buffer
+ if num_bytes > src^.pub.bytes_in_buffer then begin
+ src^.SrcStream.Position := src^.SrcStream.Position + num_bytes - src^.pub.bytes_in_buffer;
+ src^.pub.fill_input_buffer(cinfo);
+ end else begin
+ // wanted byte is in buffer so only skip
+ inc(src^.pub.next_input_byte, num_bytes);
+ dec(src^.pub.bytes_in_buffer, num_bytes);
+ end;
+ end;
+end;
+
+
+procedure glBitmap_libJPEG_term_source(cinfo: j_decompress_ptr); cdecl;
+begin
+end;
+
+
+procedure glBitmap_libJPEG_init_destination(cinfo: j_compress_ptr); cdecl;
+begin
+end;
+
+
+function glBitmap_libJPEG_empty_output_buffer(cinfo: j_compress_ptr): boolean; cdecl;
+var
+ dest: glBitmap_libJPEG_dest_mgr_ptr;
+begin
+ dest := glBitmap_libJPEG_dest_mgr_ptr(cinfo^.dest);
+
+ if dest^.pub.free_in_buffer < Cardinal(Length(dest^.DestBuffer)) then begin
+ // write complete buffer
+ dest^.DestStream.Write(dest^.DestBuffer[1], SizeOf(dest^.DestBuffer));
+
+ // reset buffer
+ dest^.pub.next_output_byte := @dest^.DestBuffer[1];
+ dest^.pub.free_in_buffer := Length(dest^.DestBuffer);
+ end;
+
+ Result := True;
+end;
+
+
+procedure glBitmap_libJPEG_term_destination(cinfo: j_compress_ptr); cdecl;
+var
+ Idx: Integer;
+ dest: glBitmap_libJPEG_dest_mgr_ptr;
+begin
+ dest := glBitmap_libJPEG_dest_mgr_ptr(cinfo^.dest);
+
+ for Idx := Low(dest^.DestBuffer) to High(dest^.DestBuffer) do begin
+ // check for endblock
+ if (Idx < High(dest^.DestBuffer)) and (dest^.DestBuffer[Idx] = $FF) and (dest^.DestBuffer[Idx +1] = JPEG_EOI) then begin
+ // write endblock
+ dest^.DestStream.Write(dest^.DestBuffer[Idx], 2);
+
+ // leave
+ Break;
+ end else
+ dest^.DestStream.Write(dest^.DestBuffer[Idx], 1);
+ end;
+end;
+{$endif}
+
+
+{$ifdef GLB_SUPPORT_JPEG_READ}
+function TglBitmap.LoadJPEG(Stream: TStream): Boolean;
+{$ifdef GLB_SDL_IMAGE}
+var
+ Surface: PSDL_Surface;
+ RWops: PSDL_RWops;
+begin
+ Result := False;
+
+ RWops := glBitmapCreateRWops(Stream);
+ try
+ if IMG_isJPG(RWops) > 0 then begin
+ Surface := IMG_LoadJPG_RW(RWops);
+ try
+ AssignFromSurface(Surface);
+ Result := True;
+ finally
+ SDL_FreeSurface(Surface);
+ end;
+ end;
+ finally
+ SDL_FreeRW(RWops);
+ end;
+end;
+{$endif}
+{$ifdef GLB_LIB_JPEG}
+var
+ StreamPos: Int64;
+ Temp: array[0..1]of Byte;
+
+ jpeg: jpeg_decompress_struct;
+ jpeg_err: jpeg_error_mgr;
+
+ IntFormat: TglBitmapInternalFormat;
+ pImage: pByte;
+ TempHeight, TempWidth: Integer;
+
+ pTemp: pByte;
+ Row: Integer;
+begin
+ Result := False;
+
+ if not init_libJPEG then
+ raise Exception.Create('LoadJPG - unable to initialize libJPEG.');
+
+ try
+ // reading first two bytes to test file and set cursor back to begin
+ StreamPos := Stream.Position;
+ Stream.Read(Temp[0], 2);
+ Stream.Position := StreamPos;
+
+ // if Bitmap then read file.
+ if ((Temp[0] = $FF) and (Temp[1] = $D8)) then begin
+ FillChar(jpeg, SizeOf(jpeg_decompress_struct), $00);
+ FillChar(jpeg_err, SizeOf(jpeg_error_mgr), $00);
+
+ // error managment
+ jpeg.err := jpeg_std_error(@jpeg_err);
+ jpeg_err.error_exit := glBitmap_libJPEG_error_exit;
+ jpeg_err.output_message := glBitmap_libJPEG_output_message;
+
+ // decompression struct
+ jpeg_create_decompress(@jpeg);
+
+ // allocation space for streaming methods
+ jpeg.src := jpeg.mem^.alloc_small(@jpeg, JPOOL_PERMANENT, SizeOf(glBitmap_libJPEG_source_mgr));
+
+ // seeting up custom functions
+ with glBitmap_libJPEG_source_mgr_ptr(jpeg.src)^ do begin
+ pub.init_source := glBitmap_libJPEG_init_source;
+ pub.fill_input_buffer := glBitmap_libJPEG_fill_input_buffer;
+ pub.skip_input_data := glBitmap_libJPEG_skip_input_data;
+ pub.resync_to_restart := jpeg_resync_to_restart; // use default method
+ pub.term_source := glBitmap_libJPEG_term_source;
+
+ pub.bytes_in_buffer := 0; // forces fill_input_buffer on first read
+ pub.next_input_byte := nil; // until buffer loaded
+
+ SrcStream := Stream;
+ end;
+
+ // set global decoding state
+ jpeg.global_state := DSTATE_START;
+
+ // read header of jpeg
+ jpeg_read_header(@jpeg, False);
+
+ // setting output parameter
+ case jpeg.jpeg_color_space of
+ JCS_GRAYSCALE:
+ begin
+ jpeg.out_color_space := JCS_GRAYSCALE;
+ IntFormat := ifLuminance;
+ end;
+ else
+ jpeg.out_color_space := JCS_RGB;
+ IntFormat := ifRGB8;
+ end;
+
+ // reading image
+ jpeg_start_decompress(@jpeg);
+
+ TempHeight := jpeg.output_height;
+ TempWidth := jpeg.output_width;
+
+ // creating new image
+ GetMem(pImage, FormatGetImageSize(glBitmapPosition(TempWidth, TempHeight), IntFormat));
+ try
+ pTemp := pImage;
+
+ for Row := 0 to TempHeight -1 do begin
+ jpeg_read_scanlines(@jpeg, @pTemp, 1);
+ Inc(pTemp, Trunc(FormatGetSize(IntFormat) * TempWidth));
+ end;
+
+ // finish decompression
+ jpeg_finish_decompress(@jpeg);
+
+ // destroy decompression
+ jpeg_destroy_decompress(@jpeg);
+
+ SetDataPointer(pImage, IntFormat, TempWidth, TempHeight);
+
+ Result := True;
+ except
+ FreeMem(pImage);
+ raise;
+ end;
+ end;
+ finally
+ quit_libJPEG;
+ end;
+end;
+{$endif}
+{$ifdef GLB_DELPHI_JPEG}
+var
+ bmp: TBitmap;
+ jpg: TJPEGImage;
+ StreamPos: Int64;
+ Temp: array[0..1]of Byte;
+begin
+ Result := False;
+
+ // reading first two bytes to test file and set cursor back to begin
+ StreamPos := Stream.Position;
+ Stream.Read(Temp[0], 2);
+ Stream.Position := StreamPos;
+
+ // if Bitmap then read file.
+ if ((Temp[0] = $FF) and (Temp[1] = $D8)) then begin
+ bmp := TBitmap.Create;
+ try
+ jpg := TJPEGImage.Create;
+ try
+ jpg.LoadFromStream(Stream);
+ bmp.Assign(jpg);
+ Result := AssignFromBitmap(bmp);
+ finally
+ jpg.Free;
+ end;
+ finally
+ bmp.Free;
+ end;
+ end;
+end;
+{$endif}
+{$endif}
+
+
+const
+ BMP_MAGIC = $4D42;
+
+ BMP_COMP_RGB = 0;
+ BMP_COMP_RLE8 = 1;
+ BMP_COMP_RLE4 = 2;
+ BMP_COMP_BITFIELDS = 3;
+
+type
+ TBMPHeader = packed record
+ bfType: Word;
+ bfSize: Cardinal;
+ bfReserved1: Word;
+ bfReserved2: Word;
+ bfOffBits: Cardinal;
+ end;
+
+ TBMPInfo = packed record
+ biSize: Cardinal;
+ biWidth: Longint;
+ biHeight: Longint;
+ biPlanes: Word;
+ biBitCount: Word;
+ biCompression: Cardinal;
+ biSizeImage: Cardinal;
+ biXPelsPerMeter: Longint;
+ biYPelsPerMeter: Longint;
+ biClrUsed: Cardinal;
+ biClrImportant: Cardinal;
+ end;
+
+ TBMPInfoOS = packed record
+ biSize: Cardinal;
+ biWidth: Longint;
+ biHeight: Longint;
+ biPlanes: Word;
+ biBitCount: Word;
+ end;
+
+// TBMPPalette = record
+// case Boolean of
+// True : (Colors: array[Byte] of TRGBQUAD);
+// False: (redMask, greenMask, blueMask: Cardinal);
+// end;
+
+function TglBitmap.LoadBMP(Stream: TStream): Boolean;
+var
+ StreamPos: Int64;
+ Header: TBMPHeader;
+ Info: TBMPInfo;
+ NewImage, pData: pByte;
+
+ Format: TglBitmapInternalFormat;
+ LineSize, Padding, LineIdx: Integer;
+ RedMask, GreenMask, BlueMask, AlphaMask: Cardinal;
+
+ PaddingBuff: Cardinal;
+
+
+ function GetLineWidth : Integer;
+ begin
+ Result := ((Info.biWidth * Info.biBitCount + 31) and - 32) shr 3;
+ end;
+
+
+begin
+ Result := False;
+
+ RedMask := 0;
+ GreenMask := 0;
+ BlueMask := 0;
+ Format := ifEmpty;
+
+ // Header
+ StreamPos := Stream.Position;
+ Stream.Read(Header, SizeOf(Header));
+
+ if Header.bfType = BMP_MAGIC then begin
+ Stream.Read(Info, SizeOf(Info));
+
+ // Check for Compression
+ if Info.biCompression <> BMP_COMP_RGB then begin
+ if Info.biCompression = BMP_COMP_BITFIELDS then begin
+ // Read Bitmasks for 16 or 32 Bit (24 Bit dosn't support Bitmasks!)
+ if (Info.biBitCount = 16) or (Info.biBitCount = 32) then begin
+ Stream.Read(RedMask, SizeOf(Cardinal));
+ Stream.Read(GreenMask, SizeOf(Cardinal));
+ Stream.Read(BlueMask, SizeOf(Cardinal));
+ Stream.Read(AlphaMask, SizeOf(Cardinal));
+ end;
+ end else begin
+ // RLE compression is unsupported
+ Stream.Position := StreamPos;
+
+ Exit;
+ end;
+ end;
+
+ // Skip palette
+ if Info.biBitCount < 16 then
+ Stream.Position := Stream.Position + Info.biClrUsed * 4;
+
+ // Jump to the data
+ Stream.Position := StreamPos + Header.bfOffBits;
+
+ // Select Format
+ case Info.biBitCount of
+ 8 : Format := ifLuminance;
+ 16:
+ begin
+ if (RedMask = 0) and (GreenMask = 0) and (BlueMask = 0) then begin
+ Format := ifRGB5A1;
+ end else begin
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask, ifLuminanceAlpha) then
+ Format := ifLuminanceAlpha;
+
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask, ifRGBA4) then
+ Format := ifRGBA4;
+
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, 0, ifRGB5A1) then
+ Format := ifRGB5A1;
+
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, 0, ifR5G6B5) then
+ Format := ifR5G6B5;
+ end;
+ end;
+ 24: Format := ifBGR8;
+ 32:
+ begin
+ if (RedMask = 0) and (GreenMask = 0) and (BlueMask = 0) then begin
+ Format := ifBGRA8;
+ end else begin
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask, ifRGBA8) then
+ Format := ifRGBA8;
+
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask, ifBGRA8) then
+ Format := ifBGRA8;
+
+ if FormatCheckFormat(RedMask, GreenMask, BlueMask, AlphaMask, ifRGB10A2) then
+ Format := ifRGB10A2;
+ end;
+ end;
+ end;
+
+ if Format <> ifEmpty then begin
+ LineSize := Trunc(Info.biWidth * FormatGetSize(Format));
+ Padding := GetLineWidth - LineSize;
+
+ // copying data
+ GetMem(NewImage, Info.biHeight * LineSize);
+ try
+ FillChar(NewImage^, Info.biHeight * LineSize, $FF);
+
+ // Set pData to last Line
+ pData := NewImage;
+ Inc(pData, LineSize * (Info.biHeight -1));
+
+ // Copy Image Data
+ for LineIdx := 0 to Info.biHeight - 1 do begin
+ Stream.Read(pData^, LineSize);
+ Dec(pData, LineSize);
+
+ Stream.Read(PaddingBuff, Padding);
+ end;
+
+ // Set new Image
+ SetDataPointer(NewImage, Format, Info.biWidth, Info.biHeight);
+
+ Result := True;
+ except
+ FreeMem(NewImage);
+ raise;
+ end;
+ end;
+ end
+ else Stream.Position := StreamPos;
+end;
+
+
+const
+ DDS_MAGIC = $20534444;
+
+ // DDS_header.dwFlags
+ DDSD_CAPS = $00000001;
+ DDSD_HEIGHT = $00000002;
+ DDSD_WIDTH = $00000004;
+ DDSD_PITCH = $00000008;
+ DDSD_PIXELFORMAT = $00001000;
+ DDSD_MIPMAPCOUNT = $00020000;
+ DDSD_LINEARSIZE = $00080000;
+ DDSD_DEPTH = $00800000;
+
+ // DDS_header.sPixelFormat.dwFlags
+ DDPF_ALPHAPIXELS = $00000001;
+ DDPF_FOURCC = $00000004;
+ DDPF_INDEXED = $00000020;
+ DDPF_RGB = $00000040;
+
+ // DDS_header.sCaps.dwCaps1
+ DDSCAPS_COMPLEX = $00000008;
+ DDSCAPS_TEXTURE = $00001000;
+ DDSCAPS_MIPMAP = $00400000;
+
+ // DDS_header.sCaps.dwCaps2
+ DDSCAPS2_CUBEMAP = $00000200;
+ DDSCAPS2_CUBEMAP_POSITIVEX = $00000400;
+ DDSCAPS2_CUBEMAP_NEGATIVEX = $00000800;
+ DDSCAPS2_CUBEMAP_POSITIVEY = $00001000;
+ DDSCAPS2_CUBEMAP_NEGATIVEY = $00002000;
+ DDSCAPS2_CUBEMAP_POSITIVEZ = $00004000;
+ DDSCAPS2_CUBEMAP_NEGATIVEZ = $00008000;
+ DDSCAPS2_VOLUME = $00200000;
+
+ D3DFMT_DXT1 = $31545844;
+ D3DFMT_DXT3 = $33545844;
+ D3DFMT_DXT5 = $35545844;
+
+type
+ TDDSPixelFormat = packed record
+ dwSize: Cardinal;
+ dwFlags: Cardinal;
+ dwFourCC: Cardinal;
+ dwRGBBitCount: Cardinal;
+ dwRBitMask: Cardinal;
+ dwGBitMask: Cardinal;
+ dwBBitMask: Cardinal;
+ dwAlphaBitMask: Cardinal;
+ end;
+
+ TDDSCaps = packed record
+ dwCaps1: Cardinal;
+ dwCaps2: Cardinal;
+ dwDDSX: Cardinal;
+ dwReserved: Cardinal;
+ end;
+
+ TDDSHeader = packed record
+ dwMagic: Cardinal;
+ dwSize: Cardinal;
+ dwFlags: Cardinal;
+ dwHeight: Cardinal;
+ dwWidth: Cardinal;
+ dwPitchOrLinearSize: Cardinal;
+ dwDepth: Cardinal;
+ dwMipMapCount: Cardinal;
+ dwReserved: array[0..10] of Cardinal;
+ PixelFormat: TDDSPixelFormat;
+ Caps: TDDSCaps;
+ dwReserved2: Cardinal;
+ end;
+
+
+function TglBitmap.LoadDDS(Stream: TStream): Boolean;
+var
+ Header: TDDSHeader;
+ StreamPos: Int64;
+ Y, LineSize: Cardinal;
+
+// MipMapCount, X, Y, XSize, YSize: Cardinal;
+ RowSize: Cardinal;
+ NewImage, pData: pByte;
+ Format: TglBitmapInternalFormat;
+
+
+ function RaiseEx : Exception;
+ begin
+ Result := EglBitmapException.Create('LoadDDS - unsupported Pixelformat found.');
+ end;
+
+
+ function GetInternalFormat: TglBitmapInternalFormat;
+ begin
+ with Header.PixelFormat do begin
+ // Compresses
+ if (dwFlags and DDPF_FOURCC) > 0 then begin
+ case Header.PixelFormat.dwFourCC of
+ D3DFMT_DXT1: Result := ifDXT1;
+ D3DFMT_DXT3: Result := ifDXT3;
+ D3DFMT_DXT5: Result := ifDXT5;
+ else
+ raise RaiseEx;
+ end;
+ end else
+
+ // RGB
+ if (dwFlags and (DDPF_RGB or DDPF_ALPHAPIXELS)) > 0 then begin
+ case dwRGBBitCount of
+ 8:
+ begin
+ if dwFlags and DDPF_ALPHAPIXELS > 0 then
+ Result := ifAlpha
+ else
+ Result := ifLuminance;
+ end;
+ 16:
+ begin
+ if dwFlags and DDPF_ALPHAPIXELS > 0 then begin
+ // Alpha
+ case GetBitSize(dwRBitMask) of
+ 5: Result := ifRGB5A1;
+ 4: Result := ifRGBA4;
+ else
+ Result := ifLuminanceAlpha;
+ end;
+ end else begin
+ // no Alpha
+ Result := ifR5G6B5;
+ end;
+ end;
+ 24:
+ begin
+ if dwRBitMask > dwBBitMask then
+ Result := ifBGR8
+ else
+ Result := ifRGB8;
+ end;
+ 32:
+ begin
+ if GetBitSize(dwRBitMask) = 10 then
+ Result := ifRGB10A2
+ else
+
+ if dwRBitMask > dwBBitMask then
+ Result := ifBGRA8
+ else
+ Result := ifRGBA8;
+ end;
+ else
+ raise RaiseEx;
+ end;
+ end else
+ raise RaiseEx;
+ end;
+ end;
+
+begin
+ Result := False;
+
+ // Header
+ StreamPos := Stream.Position;
+ Stream.Read(Header, sizeof(Header));
+
+ if ((Header.dwMagic <> DDS_MAGIC) or (Header.dwSize <> 124) or
+ ((Header.dwFlags and DDSD_PIXELFORMAT) = 0) or ((Header.dwFlags and DDSD_CAPS) = 0)) then begin
+ Stream.Position := StreamPos;
+ Exit;
+ end;
+
+ // Pixelformat
+// if Header.dwFlags and DDSD_MIPMAPCOUNT <> 0
+// then MipMapCount := Header.dwMipMapCount
+// else MipMapCount := 1;
+
+ Format := GetInternalFormat;
+ LineSize := Trunc(Header.dwWidth * FormatGetSize(Format));
+
+ GetMem(NewImage, Header.dwHeight * LineSize);
+ try
+ pData := NewImage;
+
+ // Compressed
+ if (Header.PixelFormat.dwFlags and DDPF_FOURCC) > 0 then begin
+ RowSize := Header.dwPitchOrLinearSize div Header.dwWidth;
+
+ for Y := 0 to Header.dwHeight -1 do begin
+ Stream.Read(pData^, RowSize);
+ Inc(pData, LineSize);
+ end;
+ end else
+
+ // RGB(A)
+ if (Header.PixelFormat.dwFlags and (DDPF_RGB or DDPF_ALPHAPIXELS)) > 0 then begin
+ RowSize := Header.dwPitchOrLinearSize;
+
+ for Y := 0 to Header.dwHeight -1 do begin
+ Stream.Read(pData^, RowSize);
+ Inc(pData, LineSize);
+ end;
+ end
+ else raise RaiseEx;
+
+ SetDataPointer(NewImage, Format, Header.dwWidth, Header.dwHeight);
+
+ Result := True;
+ except
+ FreeMem(NewImage);
+ raise;
+ end;
+end;
+
+
+type
+ TTGAHeader = packed record
+ ImageID: Byte;
+ ColorMapType: Byte;
+ ImageType: Byte;
+ ColorMapSpec: Array[0..4] of Byte;
+ OrigX: Word;
+ OrigY: Word;
+ Width: Word;
+ Height: Word;
+ Bpp: Byte;
+ ImageDes: Byte;
+ end;
+
+const
+ TGA_UNCOMPRESSED_RGB = 2;
+ TGA_UNCOMPRESSED_GRAY = 3;
+ TGA_COMPRESSED_RGB = 10;
+ TGA_COMPRESSED_GRAY = 11;
+
+
+
+function TglBitmap.LoadTGA(Stream: TStream): Boolean;
+var
+ Header: TTGAHeader;
+ NewImage, pData: PByte;
+ StreamPos: Int64;
+ PixelSize, LineSize, YStart, YEnd, YInc: Integer;
+ Format: TglBitmapInternalFormat;
+
+const
+ CACHE_SIZE = $4000;
+
+ procedure ReadUncompressed;
+ var
+ RowSize: Integer;
+ begin
+ RowSize := Header.Width * PixelSize;
+
+ // copy line by line
+ while YStart <> YEnd + YInc do begin
+ pData := NewImage;
+ Inc(pData, YStart * LineSize);
+
+ Stream.Read(pData^, RowSize);
+ Inc(YStart, YInc);
+ end;
+ end;
+
+
+ procedure ReadCompressed;
+ var
+ HeaderWidth, HeaderHeight: Integer;
+ LinePixelsRead, ImgPixelsRead, ImgPixelsToRead: Integer;
+
+ Cache: PByte;
+ CacheSize, CachePos: Integer;
+
+ Temp: Byte;
+ TempBuf: Array [0..15] of Byte;
+
+ PixelRepeat: Boolean;
+ PixelToRead, TempPixels: Integer;
+
+
+ procedure CheckLine;
+ begin
+ if LinePixelsRead >= HeaderWidth then begin
+ LinePixelsRead := 0;
+ pData := NewImage;
+ Inc(YStart, YInc);
+ Inc(pData, YStart * LineSize);
+ end;
+ end;
+
+
+ procedure CachedRead(var Buffer; Count: Integer);
+ var
+ BytesRead: Integer;
+ begin
+ if (CachePos + Count) > CacheSize then begin
+ BytesRead := 0;
+
+ // Read Data
+ if CacheSize - CachePos > 0 then begin
+ BytesRead := CacheSize - CachePos;
+
+ Move(pByteArray(Cache)^[CachePos], Buffer, BytesRead);
+ Inc(CachePos, BytesRead);
+ end;
+
+ // Reload Data
+ CacheSize := Min(CACHE_SIZE, Stream.Size - Stream.Position);
+ Stream.Read(Cache^, CacheSize);
+ CachePos := 0;
+
+ // Read else
+ if Count - BytesRead > 0 then begin
+ Move(pByteArray(Cache)^[CachePos], TByteArray(Buffer)[BytesRead], Count - BytesRead);
+ Inc(CachePos, Count - BytesRead);
+ end;
+ end else begin
+ Move(pByteArray(Cache)^[CachePos], Buffer, Count);
+ Inc(CachePos, Count);
+ end;
+ end;
+
+
+ begin
+ CacheSize := 0;
+ CachePos := 0;
+
+ HeaderWidth := Header.Width;
+ HeaderHeight := Header.Height;
+
+ GetMem(Cache, CACHE_SIZE); // 16K Buffer
+ try
+ ImgPixelsToRead := HeaderWidth * HeaderHeight;
+ ImgPixelsRead := 0;
+ LinePixelsRead := 0;
+
+ pData := NewImage;
+ Inc(pData, YStart * LineSize);
+
+ // Read until all Pixels
+ repeat
+ CachedRead(Temp, 1);
+
+ PixelRepeat := Temp and $80 > 0;
+ PixelToRead := (Temp and $7F) + 1;
+
+ Inc(ImgPixelsRead, PixelToRead);
+
+ if PixelRepeat then begin
+ // repeat one pixel x times
+ CachedRead(TempBuf[0], PixelSize);
+
+ // repeat Pixel
+ while PixelToRead > 0 do begin
+ CheckLine;
+
+ TempPixels := HeaderWidth - LinePixelsRead;
+ if PixelToRead < TempPixels then
+ TempPixels := PixelToRead;
+
+ Inc(LinePixelsRead, TempPixels);
+ Dec(PixelToRead, TempPixels);
+
+ while TempPixels > 0 do begin
+ case PixelSize of
+ 1:
+ begin
+ pData^ := TempBuf[0];
+ Inc(pData);
+ end;
+ 2:
+ begin
+ pWord(pData)^ := pWord(@TempBuf[0])^;
+ Inc(pData, 2);
+ end;
+ 3:
+ begin
+ pWord(pData)^ := pWord(@TempBuf[0])^;
+ Inc(pData, 2);
+ pData^ := TempBuf[2];
+ Inc(pData);
+ end;
+ 4:
+ begin
+ pDWord(pData)^ := pDWord(@TempBuf[0])^;
+ Inc(pData, 4);
+ end;
+ end;
+
+ Dec(TempPixels);
+ end;
+ end;
+ end else begin
+ // copy x pixels
+ while PixelToRead > 0 do begin
+ CheckLine;
+
+ TempPixels := HeaderWidth - LinePixelsRead;
+ if PixelToRead < TempPixels then
+ TempPixels := PixelToRead;
+
+ CachedRead(pData^, PixelSize * TempPixels);
+ Inc(pData, PixelSize * TempPixels);
+
+ Inc(LinePixelsRead, TempPixels);
+
+ Dec(PixelToRead, TempPixels);
+ end;
+ end;
+ until ImgPixelsRead >= ImgPixelsToRead;
+ finally
+ FreeMem(Cache)
+ end;
+ end;
+
+begin
+ Result := False;
+
+ // reading header to test file and set cursor back to begin
+ StreamPos := Stream.Position;
+ Stream.Read(Header, SizeOf(Header));
+
+ // no colormapped files
+ if (Header.ColorMapType = 0) then begin
+ if Header.ImageType in [TGA_UNCOMPRESSED_RGB, TGA_UNCOMPRESSED_GRAY, TGA_COMPRESSED_RGB, TGA_COMPRESSED_GRAY] then begin
+ case Header.Bpp of
+ 8: Format := ifAlpha;
+ 16: Format := ifLuminanceAlpha;
+ 24: Format := ifBGR8;
+ 32: Format := ifBGRA8;
+ else
+ raise EglBitmapException.Create('LoadTga - unsupported BitsPerPixel found.');
+ end;
+
+ // skip image ID
+ if Header.ImageID <> 0 then
+ Stream.Position := Stream.Position + Header.ImageID;
+
+ PixelSize := Trunc(FormatGetSize(Format));
+ LineSize := Trunc(Header.Width * PixelSize);
+
+ GetMem(NewImage, LineSize * Header.Height);
+ try
+ // Row direction
+ if (Header.ImageDes and $20 > 0) then begin
+ YStart := 0;
+ YEnd := Header.Height -1;
+ YInc := 1;
+ end else begin
+ YStart := Header.Height -1;
+ YEnd := 0;
+ YInc := -1;
+ end;
+
+ // Read Image
+ case Header.ImageType of
+ TGA_UNCOMPRESSED_RGB, TGA_UNCOMPRESSED_GRAY:
+ ReadUncompressed;
+ TGA_COMPRESSED_RGB, TGA_COMPRESSED_GRAY:
+ ReadCompressed;
+ end;
+
+ SetDataPointer(NewImage, Format, Header.Width, Header.Height);
+
+ Result := True;
+ except
+ FreeMem(NewImage);
+ raise;
+ end;
+ end
+ else Stream.Position := StreamPos;
+ end
+ else Stream.Position := StreamPos;
+end;
+
+
+{$ifdef GLB_SUPPORT_PNG_WRITE}
+{$ifdef GLB_LIB_PNG}
+procedure glBitmap_libPNG_write_func(png: png_structp; buffer: png_bytep; size: cardinal); cdecl;
+begin
+ TStream(png_get_io_ptr(png)).Write(buffer^, size);
+end;
+{$endif}
+
+procedure TglBitmap.SavePNG(Stream: TStream);
+{$ifdef GLB_LIB_PNG}
+var
+ png: png_structp;
+ png_info: png_infop;
+ png_rows: array of pByte;
+ LineSize: Integer;
+ ColorType: Integer;
+ Row: Integer;
+begin
+ if not (ftPNG in FormatGetSupportedFiles (InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SavePng - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ if not init_libPNG then
+ raise Exception.Create('SavePNG - unable to initialize libPNG.');
+
+ try
+ case FInternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ ColorType := PNG_COLOR_TYPE_GRAY;
+ ifLuminanceAlpha:
+ ColorType := PNG_COLOR_TYPE_GRAY_ALPHA;
+ ifBGR8, ifRGB8:
+ ColorType := PNG_COLOR_TYPE_RGB;
+ ifBGRA8, ifRGBA8:
+ ColorType := PNG_COLOR_TYPE_RGBA;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('SavePng - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+
+ LineSize := Trunc(FormatGetSize(FInternalFormat) * Width);
+
+ // creating array for scanline
+ SetLength(png_rows, Height);
+ try
+ for Row := 0 to Height - 1 do begin
+ png_rows[Row] := Data;
+ Inc(png_rows[Row], Row * LineSize)
+ end;
+
+ // write struct
+ png := png_create_write_struct(PNG_LIBPNG_VER_STRING, nil, nil, nil);
+ if png = nil then
+ raise EglBitmapException.Create('SavePng - couldn''t create write struct.');
+
+ // create png info
+ png_info := png_create_info_struct(png);
+ if png_info = nil then begin
+ png_destroy_write_struct(@png, nil);
+ raise EglBitmapException.Create('SavePng - couldn''t create info struct.');
+ end;
+
+ // set read callback
+ png_set_write_fn(png, stream, glBitmap_libPNG_write_func, nil);
+
+ // set compression
+ png_set_compression_level(png, 6);
+
+ if InternalFormat in [ifBGR8, ifBGRA8] then
+ png_set_bgr(png);
+
+ // setup header
+ png_set_IHDR(png, png_info, Width, Height, 8, ColorType, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+ // write info
+ png_write_info(png, png_info);
+
+ // write image data
+ png_write_image(png, @png_rows[0]);
+
+ // write end
+ png_write_end(png, png_info);
+
+ // destroy write struct
+ png_destroy_write_struct(@png, @png_info);
+ finally
+ SetLength(png_rows, 0);
+ end;
+ finally
+ quit_libPNG;
+ end;
+end;
+{$endif}
+{$ifdef GLB_PNGIMAGE}
+var
+ Png: TPNGObject;
+
+ pSource, pDest: pByte;
+ X, Y, PixSize: Integer;
+ ColorType: Cardinal;
+ Alpha: Boolean;
+
+ pTemp: pByte;
+ Temp: Byte;
+begin
+ if not (ftPNG in FormatGetSupportedFiles (InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SavePng - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ case FInternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ begin
+ ColorType := COLOR_GRAYSCALE;
+ PixSize := 1;
+ Alpha := False;
+ end;
+ ifLuminanceAlpha:
+ begin
+ ColorType := COLOR_GRAYSCALEALPHA;
+ PixSize := 1;
+ Alpha := True;
+ end;
+ ifBGR8, ifRGB8:
+ begin
+ ColorType := COLOR_RGB;
+ PixSize := 3;
+ Alpha := False;
+ end;
+ ifBGRA8, ifRGBA8:
+ begin
+ ColorType := COLOR_RGBALPHA;
+ PixSize := 3;
+ Alpha := True
+ end;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('SavePng - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+
+ Png := TPNGObject.CreateBlank(ColorType, 8, Width, Height);
+ try
+ // Copy ImageData
+ pSource := Data;
+ for Y := 0 to Height -1 do begin
+ pDest := png.ScanLine[Y];
+
+ for X := 0 to Width -1 do begin
+ Move(pSource^, pDest^, PixSize);
+
+ Inc(pDest, PixSize);
+ Inc(pSource, PixSize);
+
+ if Alpha then begin
+ png.AlphaScanline[Y]^[X] := pSource^;
+ Inc(pSource);
+ end;
+ end;
+
+ // convert RGB line to BGR
+ if InternalFormat in [ifRGB8, ifRGBA8] then begin
+ pTemp := png.ScanLine[Y];
+
+ for X := 0 to Width -1 do begin
+ Temp := pByteArray(pTemp)^[0];
+ pByteArray(pTemp)^[0] := pByteArray(pTemp)^[2];
+ pByteArray(pTemp)^[2] := Temp;
+
+ Inc(pTemp, 3);
+ end;
+ end;
+ end;
+
+ // Save to Stream
+ Png.CompressionLevel := 6;
+ Png.SaveToStream(Stream);
+ finally
+ FreeAndNil(Png);
+ end;
+end;
+{$endif}
+{$endif}
+
+
+procedure TglBitmap.SaveDDS(Stream: TStream);
+var
+ Header: TDDSHeader;
+ Pix: TglBitmapPixelData;
+begin
+ if not FormatIsUncompressed(InternalFormat) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveDDS - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ if InternalFormat = ifAlpha then
+ FormatPreparePixel(Pix, ifLuminance)
+ else
+ FormatPreparePixel(Pix, InternalFormat);
+
+ // Generell
+ FillChar(Header, SizeOf(Header), 0);
+
+ Header.dwMagic := DDS_MAGIC;
+ Header.dwSize := 124;
+ Header.dwFlags := DDSD_PITCH or DDSD_CAPS or DDSD_PIXELFORMAT;
+
+ if Width > 0 then begin
+ Header.dwWidth := Width;
+ Header.dwFlags := Header.dwFlags or DDSD_WIDTH;
+ end;
+
+ if Height > 0 then begin
+ Header.dwHeight := Height;
+ Header.dwFlags := Header.dwFlags or DDSD_HEIGHT;
+ end;
+
+ Header.dwPitchOrLinearSize := fRowSize;
+ Header.dwMipMapCount := 1;
+
+ // Caps
+ Header.Caps.dwCaps1 := DDSCAPS_TEXTURE;
+
+ // Pixelformat
+ Header.PixelFormat.dwSize := Sizeof(Header.PixelFormat);
+ Header.PixelFormat.dwFlags := DDPF_RGB;
+
+ if FormatHasAlpha(InternalFormat) and (InternalFormat <> ifAlpha)
+ then Header.PixelFormat.dwFlags := Header.PixelFormat.dwFlags or DDPF_ALPHAPIXELS;
+
+ Header.PixelFormat.dwRGBBitCount := Trunc(FormatGetSize(InternalFormat) * 8);
+ Header.PixelFormat.dwRBitMask := Pix.PixelDesc.RedRange shl Pix.PixelDesc.RedShift;
+ Header.PixelFormat.dwGBitMask := Pix.PixelDesc.GreenRange shl Pix.PixelDesc.GreenShift;
+ Header.PixelFormat.dwBBitMask := Pix.PixelDesc.BlueRange shl Pix.PixelDesc.BlueShift;
+ Header.PixelFormat.dwAlphaBitMask := Pix.PixelDesc.AlphaRange shl Pix.PixelDesc.AlphaShift;
+
+ // Write
+ Stream.Write(Header, SizeOf(Header));
+
+ Stream.Write(Data^, FormatGetImageSize(glBitmapPosition(Width, Height), InternalFormat));
+end;
+
+
+procedure TglBitmap.SaveTGA(Stream: TStream);
+var
+ Header: TTGAHeader;
+ Size: Integer;
+ pTemp: pByte;
+
+
+ procedure ConvertData(pTemp: pByte);
+ var
+ Idx, PixelSize: Integer;
+ Temp: byte;
+ begin
+ PixelSize := fPixelSize;
+
+ for Idx := 0 to Height * Width do begin
+ Temp := pByteArray(pTemp)^[2];
+ pByteArray(pTemp)^[2] := pByteArray(pTemp)^[0];
+ pByteArray(pTemp)^[0] := Temp;
+
+ Inc(pTemp, PixelSize);
+ end;
+ end;
+
+
+begin
+ if not (ftTGA in FormatGetSupportedFiles (InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveTGA - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ FillChar(Header, SizeOf(Header), 0);
+
+ case InternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ begin
+ Header.ImageType := TGA_UNCOMPRESSED_GRAY;
+ Header.Bpp := 8;
+ end;
+ ifLuminanceAlpha:
+ begin
+ Header.ImageType := TGA_UNCOMPRESSED_GRAY;
+ Header.Bpp := 16;
+ end;
+ ifRGB8, ifBGR8:
+ begin
+ Header.ImageType := TGA_UNCOMPRESSED_RGB;
+ Header.Bpp := 24;
+ end;
+ ifRGBA8, ifBGRA8:
+ begin
+ Header.ImageType := TGA_UNCOMPRESSED_RGB;
+ Header.Bpp := 32;
+ end;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveTGA - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+
+ Header.Width := Width;
+ Header.Height := Height;
+ Header.ImageDes := $20;
+
+ if FormatHasAlpha(InternalFormat) then
+ Header.ImageDes := Header.ImageDes or $08;
+
+ Stream.Write(Header, SizeOf(Header));
+
+ // convert RGB(A) to BGR(A)
+ Size := FormatGetImageSize(glBitmapPosition(Width, Height), InternalFormat);
+ if InternalFormat in [ifRGB8, ifRGBA8] then begin
+ GetMem(pTemp, Size);
+ end else
+ pTemp := Data;
+
+ try
+ // convert data
+ if InternalFormat in [ifRGB8, ifRGBA8] then begin
+ Move(Data^, pTemp^, Size);
+ ConvertData(pTemp);
+ end;
+
+ // write data
+ Stream.Write(pTemp^, Size);
+ finally
+ // free tempdata
+ if InternalFormat in [ifRGB8, ifRGBA8] then
+ FreeMem(pTemp);
+ end;
+end;
+
+
+{$ifdef GLB_SUPPORT_JPEG_WRITE}
+procedure TglBitmap.SaveJPEG(Stream: TStream);
+{$ifdef GLB_LIB_JPEG}
+var
+ jpeg: jpeg_compress_struct;
+ jpeg_err: jpeg_error_mgr;
+ Row: Integer;
+ pTemp, pTemp2: pByte;
+
+
+ procedure CopyRow(pDest, pSource: pByte);
+ var
+ X: Integer;
+ begin
+ for X := 0 to Width - 1 do begin
+ pByteArray(pDest)^[0] := pByteArray(pSource)^[2];
+ pByteArray(pDest)^[1] := pByteArray(pSource)^[1];
+ pByteArray(pDest)^[2] := pByteArray(pSource)^[0];
+
+ Inc(pDest, 3);
+ Inc(pSource, 3);
+ end;
+ end;
+
+begin
+ if not (ftJPEG in FormatGetSupportedFiles(InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveJpg - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ if not init_libJPEG then
+ raise Exception.Create('SaveJPG - unable to initialize libJPEG.');
+
+ try
+ FillChar(jpeg, SizeOf(jpeg_compress_struct), $00);
+ FillChar(jpeg_err, SizeOf(jpeg_error_mgr), $00);
+
+ // error managment
+ jpeg.err := jpeg_std_error(@jpeg_err);
+ jpeg_err.error_exit := glBitmap_libJPEG_error_exit;
+ jpeg_err.output_message := glBitmap_libJPEG_output_message;
+
+ // compression struct
+ jpeg_create_compress(@jpeg);
+
+ // allocation space for streaming methods
+ jpeg.dest := jpeg.mem^.alloc_small(@jpeg, JPOOL_PERMANENT, SizeOf(glBitmap_libJPEG_dest_mgr));
+
+ // seeting up custom functions
+ with glBitmap_libJPEG_dest_mgr_ptr(jpeg.dest)^ do begin
+ pub.init_destination := glBitmap_libJPEG_init_destination;
+ pub.empty_output_buffer := glBitmap_libJPEG_empty_output_buffer;
+ pub.term_destination := glBitmap_libJPEG_term_destination;
+
+ pub.next_output_byte := @DestBuffer[1];
+ pub.free_in_buffer := Length(DestBuffer);
+
+ DestStream := Stream;
+ end;
+
+ // very important state
+ jpeg.global_state := CSTATE_START;
+
+ jpeg.image_width := Width;
+ jpeg.image_height := Height;
+ case InternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ begin
+ jpeg.input_components := 1;
+ jpeg.in_color_space := JCS_GRAYSCALE;
+ end;
+ ifRGB8, ifBGR8:
+ begin
+ jpeg.input_components := 3;
+ jpeg.in_color_space := JCS_RGB;
+ end;
+ end;
+
+ // setting defaults
+ jpeg_set_defaults(@jpeg);
+
+ // compression quality
+ jpeg_set_quality(@jpeg, 95, True);
+
+ // start compression
+ jpeg_start_compress(@jpeg, true);
+
+ // write rows
+ pTemp := Data;
+
+ // initialing row
+ if InternalFormat = ifBGR8 then
+ GetMem(pTemp2, fRowSize)
+ else
+ pTemp2 := pTemp;
+
+ try
+ for Row := 0 to jpeg.image_height -1 do begin
+ // prepare row
+ if InternalFormat = ifBGR8 then
+ CopyRow(pTemp2, pTemp)
+ else
+ pTemp2 := pTemp;
+
+ // write row
+ jpeg_write_scanlines(@jpeg, @pTemp2, 1);
+ inc(pTemp, fRowSize);
+ end;
+ finally
+ // free memory
+ if InternalFormat = ifBGR8 then
+ FreeMem(pTemp2);
+ end;
+
+ // finish compression
+ jpeg_finish_compress(@jpeg);
+
+ // destroy compression
+ jpeg_destroy_compress(@jpeg);
+ finally
+ quit_libJPEG;
+ end;
+end;
+{$endif}
+{$ifdef GLB_DELPHI_JPEG}
+var
+ Bmp: TBitmap;
+ Jpg: TJPEGImage;
+begin
+ if not (ftJPEG in FormatGetSupportedFiles (InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveJpg - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ Bmp := TBitmap.Create;
+ try
+ Jpg := TJPEGImage.Create;
+ try
+ AssignToBitmap(Bmp);
+
+ if FInternalFormat in [ifAlpha, ifLuminance, ifDepth8] then begin
+ Jpg.Grayscale := True;
+ Jpg.PixelFormat := jf8Bit;
+ end;
+
+ Jpg.Assign(Bmp);
+
+ Jpg.SaveToStream(Stream);
+ finally
+ FreeAndNil(Jpg);
+ end;
+ finally
+ FreeAndNil(Bmp);
+ end;
+end;
+{$endif}
+{$endif}
+
+
+procedure TglBitmap.SaveBMP(Stream: TStream);
+var
+ Header: TBMPHeader;
+ Info: TBMPInfo;
+ pData, pTemp: pByte;
+
+ PixelFormat: TglBitmapPixelData;
+ ImageSize, LineSize, Padding, LineIdx, ColorIdx: Integer;
+ Temp, RedMask, GreenMask, BlueMask, AlphaMask: Cardinal;
+
+ PaddingBuff: Cardinal;
+
+
+ function GetLineWidth : Integer;
+ begin
+ Result := ((Info.biWidth * Info.biBitCount + 31) and - 32) shr 3;
+ end;
+
+
+begin
+ if not (ftBMP in FormatGetSupportedFiles(InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveBMP - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ ImageSize := Trunc(Width * Height * FormatGetSize(InternalFormat));
+
+ Header.bfType := BMP_MAGIC;
+ Header.bfSize := SizeOf(Header) + SizeOf(Info) + ImageSize;
+ Header.bfReserved1 := 0;
+ Header.bfReserved2 := 0;
+ Header.bfOffBits := SizeOf(Header) + SizeOf(Info);
+
+ FillChar(Info, SizeOf(Info), 0);
+ Info.biSize := SizeOf(Info);
+ Info.biWidth := Width;
+ Info.biHeight := Height;
+ Info.biPlanes := 1;
+ Info.biCompression := BMP_COMP_RGB;
+ Info.biSizeImage := ImageSize;
+ case InternalFormat of
+ ifAlpha, ifLuminance, ifDepth8:
+ begin
+ Info.biBitCount := 8;
+
+ Header.bfSize := Header.bfSize + 256 * SizeOf(Cardinal);
+ Header.bfOffBits := Header.bfOffBits + 256 * SizeOf(Cardinal);
+
+ Info.biClrUsed := 256;
+ Info.biClrImportant := 256;
+ end;
+ ifLuminanceAlpha, ifRGBA4, ifR5G6B5, ifRGB5A1:
+ begin
+ Info.biBitCount := 16;
+ Info.biCompression := BMP_COMP_BITFIELDS;
+ end;
+ ifBGR8, ifRGB8:
+ Info.biBitCount := 24;
+ ifBGRA8, ifRGBA8, ifRGB10A2:
+ begin
+ Info.biBitCount := 32;
+ Info.biCompression := BMP_COMP_BITFIELDS;
+ end;
+ else
+ raise EglBitmapUnsupportedInternalFormat.Create('SaveBMP - ' + UNSUPPORTED_INTERNAL_FORMAT);
+ end;
+ Info.biXPelsPerMeter := 2835;
+ Info.biYPelsPerMeter := 2835;
+
+ // prepare bitmasks
+ if Info.biCompression = BMP_COMP_BITFIELDS then begin
+ Info.biSize := Info.biSize + 4 * SizeOf(Cardinal);
+ Header.bfSize := Header.bfSize + 4 * SizeOf(Cardinal);
+ Header.bfOffBits := Header.bfOffBits + 4 * SizeOf(Cardinal);
+
+ FormatPreparePixel(PixelFormat, InternalFormat);
+
+ with PixelFormat.PixelDesc do begin
+ RedMask := RedRange shl RedShift;
+ GreenMask := GreenRange shl GreenShift;
+ BlueMask := BlueRange shl BlueShift;
+ AlphaMask := AlphaRange shl AlphaShift;
+ end;
+ end;
+
+ // headers
+ Stream.Write(Header, SizeOf(Header));
+ Stream.Write(Info, SizeOf(Info));
+
+ // colortable
+ if Info.biBitCount = 8 then begin
+ Temp := 0;
+ for ColorIdx := Low(Byte) to High(Byte) do begin
+ Stream.Write(Temp, 4);
+ Temp := Temp + $00010101;
+ end;
+ end;
+
+ // bitmasks
+ if Info.biCompression = BMP_COMP_BITFIELDS then begin
+ Stream.Write(RedMask, SizeOf(Cardinal));
+ Stream.Write(GreenMask, SizeOf(Cardinal));
+ Stream.Write(BlueMask, SizeOf(Cardinal));
+ Stream.Write(AlphaMask, SizeOf(Cardinal));
+ end;
+
+ // image data
+ LineSize := Trunc(Width * FormatGetSize(InternalFormat));
+ Padding := GetLineWidth - LineSize;
+ PaddingBuff := 0;
+
+ pData := Data;
+ Inc(pData, (Height -1) * LineSize);
+
+ // prepare row buffer. But only for RGB because RGBA supports color masks
+ // so it's possible to change color within the image.
+ if InternalFormat = ifRGB8 then
+ GetMem(pTemp, fRowSize)
+ else
+ pTemp := nil;
+
+ try
+ // write image data
+ for LineIdx := 0 to Height - 1 do begin
+ // preparing row
+ if InternalFormat = ifRGB8 then begin
+ Move(pData^, pTemp^, fRowSize);
+ SwapRGB(pTemp, Width, False);
+ end else
+ pTemp := pData;
+
+ Stream.Write(pTemp^, LineSize);
+
+ Dec(pData, LineSize);
+
+ if Padding > 0 then
+ Stream.Write(PaddingBuff, Padding);
+ end;
+ finally
+ // destroy row buffer
+ if InternalFormat = ifRGB8 then
+ FreeMem(pTemp);
+ end;
+end;
+
+
+procedure TglBitmap.Bind(EnableTextureUnit: Boolean);
+begin
+ if EnableTextureUnit then
+ glEnable(Target);
+
+ if ID > 0 then
+ glBindTexture(Target, ID);
+end;
+
+
+procedure TglBitmap.Unbind(DisableTextureUnit: Boolean);
+begin
+ if DisableTextureUnit then
+ glDisable(Target);
+
+ glBindTexture(Target, 0);
+end;
+
+
+procedure TglBitmap.GetPixel(const Pos: TglBitmapPixelPosition;
+ var Pixel: TglBitmapPixelData);
+begin
+ if Assigned (fGetPixelFunc) then
+ fGetPixelFunc(Pos, Pixel);
+end;
+
+
+procedure TglBitmap.SetPixel (const Pos: TglBitmapPixelPosition;
+ const Pixel: TglBitmapPixelData);
+begin
+ if Assigned (fSetPixelFunc) then
+ fSetPixelFunc(Pos, Pixel);
+end;
+
+
+procedure TglBitmap.CreateID;
+begin
+ // Generate Texture
+ if ID <> 0 then
+ glDeleteTextures(1, @ID);
+
+ glGenTextures(1, @ID);
+
+ Bind(False);
+end;
+
+
+procedure TglBitmap.SetupParameters(var BuildWithGlu: Boolean);
+begin
+ // Set up parameters
+ SetWrap(fWrapS, fWrapT, fWrapR);
+ SetFilter(fFilterMin, fFilterMag);
+ SetAnisotropic(fAnisotropic);
+ SetBorderColor(fBorderColor[0], fBorderColor[1], fBorderColor[2], fBorderColor[3]);
+
+ // Mip Maps generation Mode
+ BuildWithGlu := False;
+
+ if (MipMap = mmMipmap) then begin
+ if (GL_VERSION_1_4 or GL_SGIS_generate_mipmap) then
+ glTexParameteri(Target, GL_GENERATE_MIPMAP, GL_TRUE)
+ else
+ BuildWithGlu := True;
+ end else
+ if (MipMap = mmMipmapGlu) then
+ BuildWithGlu := True;
+end;
+
+
+procedure TglBitmap.SelectFormat(DataFormat: TglBitmapInternalFormat; var glFormat, glInternalFormat, glType: Cardinal; CanConvertImage: Boolean = True);
+
+ procedure Check12;
+ begin
+ if not GL_VERSION_1_2 then
+ raise EglBitmapUnsupportedInternalFormat.Create('SelectFormat - You need at least OpenGL 1.2 to support these format.');
+ end;
+
+begin
+ glType := GL_UNSIGNED_BYTE;
+
+ // selecting Format
+ case DataFormat of
+ ifAlpha:
+ glFormat := GL_ALPHA;
+ ifLuminance:
+ glFormat := GL_LUMINANCE;
+ ifDepth8:
+ glFormat := GL_DEPTH_COMPONENT;
+ ifLuminanceAlpha:
+ glFormat := GL_LUMINANCE_ALPHA;
+ ifBGR8:
+ begin
+ if (GL_VERSION_1_2 or GL_EXT_bgra) then begin
+ glFormat := GL_BGR;
+ end else begin
+ if CanConvertImage then
+ ConvertTo(ifRGB8);
+ glFormat := GL_RGB;
+ end;
+ end;
+ ifBGRA8:
+ begin
+ if (GL_VERSION_1_2 or GL_EXT_bgra) then begin
+ glFormat := GL_BGRA;
+ end else begin
+ if CanConvertImage then
+ ConvertTo(ifRGBA8);
+ glFormat := GL_RGBA;
+ end;
+ end;
+ ifRGB8:
+ glFormat := GL_RGB;
+ ifRGBA8:
+ glFormat := GL_RGBA;
+ ifRGBA4:
+ begin
+ Check12;
+ glFormat := GL_BGRA;
+ glType := GL_UNSIGNED_SHORT_4_4_4_4_REV;
+ end;
+ ifRGB5A1:
+ begin
+ Check12;
+ glFormat := GL_BGRA;
+ glType := GL_UNSIGNED_SHORT_1_5_5_5_REV;
+ end;
+ ifRGB10A2:
+ begin
+ Check12;
+ glFormat := GL_BGRA;
+ glType := GL_UNSIGNED_INT_2_10_10_10_REV;
+ end;
+ ifR5G6B5:
+ begin
+ Check12;
+ glFormat := GL_RGB;
+ glType := GL_UNSIGNED_SHORT_5_6_5;
+ end;
+ else
+ glFormat := 0;
+ end;
+
+ // Selecting InternalFormat
+ case DataFormat of
+ ifDXT1, ifDXT3, ifDXT5:
+ begin
+ if GL_EXT_texture_compression_s3tc then begin
+ case DataFormat of
+ ifDXT1:
+ glInternalFormat := GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
+ ifDXT3:
+ glInternalFormat := GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
+ ifDXT5:
+ glInternalFormat := GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
+ end;
+ end else begin
+ // Compression isn't supported so convert to RGBA
+ if CanConvertImage then
+ ConvertTo(ifRGBA8);
+ glFormat := GL_RGBA;
+ glInternalFormat := GL_RGBA8;
+ end;
+ end;
+ ifAlpha:
+ begin
+ case Format of
+ tf4BitsPerChanel:
+ glInternalFormat := GL_ALPHA4;
+ tf8BitsPerChanel:
+ glInternalFormat := GL_ALPHA8;
+ tfCompressed:
+ begin
+ if (GL_ARB_texture_compression or GL_VERSION_1_3) then
+ glInternalFormat := GL_COMPRESSED_ALPHA
+ else
+ glInternalFormat := GL_ALPHA;
+ end;
+ else
+ glInternalFormat := GL_ALPHA;
+ end;
+ end;
+ ifLuminance:
+ begin
+ case Format of
+ tf4BitsPerChanel:
+ glInternalFormat := GL_LUMINANCE4;
+ tf8BitsPerChanel:
+ glInternalFormat := GL_LUMINANCE8;
+ tfCompressed:
+ begin
+ if (GL_ARB_texture_compression or GL_VERSION_1_3) then
+ glInternalFormat := GL_COMPRESSED_LUMINANCE
+ else
+ glInternalFormat := GL_LUMINANCE;
+ end;
+ else
+ glInternalFormat := GL_LUMINANCE;
+ end;
+ end;
+ ifDepth8:
+ begin
+ glInternalFormat := GL_DEPTH_COMPONENT;
+ end;
+ ifLuminanceAlpha:
+ begin
+ case Format of
+ tf4BitsPerChanel:
+ glInternalFormat := GL_LUMINANCE4_ALPHA4;
+ tf8BitsPerChanel:
+ glInternalFormat := GL_LUMINANCE8_ALPHA8;
+ tfCompressed:
+ begin
+ if (GL_ARB_texture_compression or GL_VERSION_1_3) then
+ glInternalFormat := GL_COMPRESSED_LUMINANCE_ALPHA
+ else
+ glInternalFormat := GL_LUMINANCE_ALPHA;
+ end;
+ else
+ glInternalFormat := GL_LUMINANCE_ALPHA;
+ end;
+ end;
+ ifBGR8, ifRGB8:
+ begin
+ case Format of
+ tf4BitsPerChanel:
+ glInternalFormat := GL_RGB4;
+ tf8BitsPerChanel:
+ glInternalFormat := GL_RGB8;
+ tfCompressed:
+ begin
+ if (GL_ARB_texture_compression or GL_VERSION_1_3) then begin
+ glInternalFormat := GL_COMPRESSED_RGB
+ end else begin
+ if (GL_EXT_texture_compression_s3tc) then
+ glInternalFormat := GL_COMPRESSED_RGB_S3TC_DXT1_EXT
+ else
+ glInternalFormat := GL_RGB;
+ end;
+ end;
+ else
+ glInternalFormat := GL_RGB;
+ end;
+ end;
+ ifBGRA8, ifRGBA8, ifRGBA4, ifRGB5A1, ifRGB10A2, ifR5G6B5:
+ begin
+ case Format of
+ tf4BitsPerChanel:
+ glInternalFormat := GL_RGBA4;
+ tf8BitsPerChanel:
+ glInternalFormat := GL_RGBA8;
+ tfCompressed:
+ begin
+ if (GL_ARB_texture_compression or GL_VERSION_1_3) then begin
+ glInternalFormat := GL_COMPRESSED_RGBA
+ end else begin
+ if (GL_EXT_texture_compression_s3tc) then
+ glInternalFormat := GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
+ else
+ glInternalFormat := GL_RGBA;
+ end;
+ end;
+ else
+ glInternalFormat := GL_RGBA;
+ end;
+ end;
+ end;
+end;
+
+
+function TglBitmap.FlipHorz: Boolean;
+begin
+ Result := False;
+end;
+
+
+function TglBitmap.FlipVert: Boolean;
+begin
+ Result := False;
+end;
+
+
+procedure TglBitmap.FreeData;
+begin
+ SetDataPointer(nil, ifEmpty);
+end;
+
+
+procedure glBitmapFillWithColorFunc(var FuncRec: TglBitmapFunctionRec);
+type
+ PglBitmapPixelData = ^TglBitmapPixelData;
+begin
+ with FuncRec do begin
+ Dest.Red := PglBitmapPixelData(CustomData)^.Red;
+ Dest.Green := PglBitmapPixelData(CustomData)^.Green;
+ Dest.Blue := PglBitmapPixelData(CustomData)^.Blue;
+ Dest.Alpha := PglBitmapPixelData(CustomData)^.Alpha;
+ end;
+end;
+
+
+procedure TglBitmap.FillWithColor(Red, Green, Blue, Alpha: Byte);
+begin
+ FillWithColorFloat(Red / $FF, Green / $FF, Blue / $FF, Alpha / $FF);
+end;
+
+
+procedure TglBitmap.FillWithColorFloat(Red, Green, Blue, Alpha: Single);
+var
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, InternalFormat);
+
+ PixelData.Red := Max(0, Min(PixelData.PixelDesc.RedRange, Trunc(PixelData.PixelDesc.RedRange * Red)));
+ PixelData.Green := Max(0, Min(PixelData.PixelDesc.GreenRange, Trunc(PixelData.PixelDesc.GreenRange * Green)));
+ PixelData.Blue := Max(0, Min(PixelData.PixelDesc.BlueRange, Trunc(PixelData.PixelDesc.BlueRange * Blue)));
+ PixelData.Alpha := Max(0, Min(PixelData.PixelDesc.AlphaRange, Trunc(PixelData.PixelDesc.AlphaRange * Alpha)));
+
+ AddFunc(glBitmapFillWithColorFunc, False, @PixelData);
+end;
+
+
+procedure TglBitmap.FillWithColorRange(Red, Green, Blue, Alpha: Cardinal);
+var
+ PixelData: TglBitmapPixelData;
+begin
+ FormatPreparePixel(PixelData, FormatGetWithAlpha(InternalFormat));
+
+ FillWithColorFloat(
+ Red / PixelData.PixelDesc.RedRange,
+ Green / PixelData.PixelDesc.GreenRange,
+ Blue / PixelData.PixelDesc.BlueRange,
+ Alpha / PixelData.PixelDesc.AlphaRange);
+end;
+
+
+procedure TglBitmap.SetAnisotropic(const Value: Integer);
+var
+ MaxAniso: Integer;
+begin
+ fAnisotropic := Value;
+
+ if (ID > 0) then begin
+ if GL_EXT_texture_filter_anisotropic then begin
+ if fAnisotropic > 0 then begin
+ Bind(False);
+
+ glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, @MaxAniso);
+
+ if Value > MaxAniso then
+ fAnisotropic := MaxAniso;
+
+ glTexParameteri(Target, GL_TEXTURE_MAX_ANISOTROPY_EXT, fAnisotropic);
+ end;
+ end else begin
+ fAnisotropic := 0;
+ end;
+ end;
+end;
+
+
+procedure TglBitmap.SetInternalFormat(const Value: TglBitmapInternalFormat);
+begin
+ if InternalFormat <> Value then begin
+ if FormatGetSize(Value) <> FormatGetSize(InternalFormat) then
+ raise EglBitmapUnsupportedInternalFormat.Create('SetInternalFormat - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ // Update whatever
+ SetDataPointer(Data, Value);
+ end;
+end;
+
+
+function TglBitmap.AddFunc(Func: TglBitmapFunction; CreateTemp: Boolean;
+ CustomData: Pointer): boolean;
+begin
+ Result := AddFunc(Self, Func, CreateTemp, InternalFormat, CustomData);
+end;
+
+
+function TglBitmap.AddFunc(Source: TglBitmap; Func: TglBitmapFunction;
+ CreateTemp: Boolean; Format: TglBitmapInternalFormat; CustomData: Pointer): boolean;
+var
+ pDest, NewImage, pSource: pByte;
+ TempHeight, TempWidth: Integer;
+ MapFunc: TglBitmapMapFunc;
+ UnMapFunc: TglBitmapUnMapFunc;
+
+ FuncRec: TglBitmapFunctionRec;
+begin
+ Assert(Assigned(Data));
+ Assert(Assigned(Source));
+ Assert(Assigned(Source.Data));
+
+ Result := False;
+
+ if Assigned (Source.Data) and FormatIsUncompressed(Format) and
+ ((Source.Height > 0) or (Source.Width > 0)) then begin
+
+ // inkompatible Formats so CreateTemp
+ if FormatGetSize(Format) <> FormatGetSize(InternalFormat) then
+ CreateTemp := True;
+
+ // Values
+ TempHeight := Max(1, Source.Height);
+ TempWidth := Max(1, Source.Width);
+
+ FuncRec.Sender := Self;
+ FuncRec.CustomData := CustomData;
+
+ NewImage := nil;
+
+ if CreateTemp then begin
+ GetMem(NewImage, Trunc(FormatGetSize(Format) * TempHeight * TempWidth));
+ pDest := NewImage;
+ end
+ else pDest := Data;
+
+ try
+ // Mapping
+ MapFunc := FormatGetMapFunc(Format);
+ FormatPreparePixel(FuncRec.Dest, Format);
+ FormatPreparePixel(FuncRec.Source, Source.InternalFormat);
+
+ FuncRec.Size := Source.Dimension;
+ FuncRec.Position.Fields := FuncRec.Size.Fields;
+
+ if FormatIsUncompressed(Source.InternalFormat) then begin
+ // Uncompressed Images
+ pSource := Source.Data;
+ UnMapFunc := FormatGetUnMapFunc(Source.InternalFormat);
+
+ FuncRec.Position.Y := 0;
+ while FuncRec.Position.Y < TempHeight do begin
+ FuncRec.Position.X := 0;
+ while FuncRec.Position.X < TempWidth do begin
+ // Get Data
+ UnMapFunc(pSource, FuncRec.Source);
+ // Func
+ Func(FuncRec);
+ // Set Data
+ MapFunc(FuncRec.Dest, pDest);
+ Inc(FuncRec.Position.X);
+ end;
+ Inc(FuncRec.Position.Y);
+ end;
+ end else begin
+ // Compressed Images
+ FuncRec.Position.Y := 0;
+ while FuncRec.Position.Y < TempHeight do begin
+ FuncRec.Position.X := 0;
+ while FuncRec.Position.X < TempWidth do begin
+ // Get Data
+ fGetPixelFunc(FuncRec.Position, FuncRec.Source);
+ // Func
+ Func(FuncRec);
+ // Set Data
+ MapFunc(FuncRec.Dest, pDest);
+ Inc(FuncRec.Position.X);
+ end;
+ Inc(FuncRec.Position.Y);
+ end;
+ end;
+
+ // Updating Image or InternalFormat
+ if CreateTemp then
+ SetDataPointer(NewImage, Format)
+ else
+
+ if Format <> InternalFormat then
+ SetInternalFormat(Format);
+
+ Result := True;
+ except
+ if CreateTemp
+ then FreeMem(NewImage);
+ raise;
+ end;
+ end;
+end;
+
+
+procedure glBitmapConvertCopyFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do begin
+ if Source.PixelDesc.RedRange > 0 then
+ Dest.Red := Source.Red;
+
+ if Source.PixelDesc.GreenRange > 0 then
+ Dest.Green := Source.Green;
+
+ if Source.PixelDesc.BlueRange > 0 then
+ Dest.Blue := Source.Blue;
+
+ if Source.PixelDesc.AlphaRange > 0 then
+ Dest.Alpha := Source.Alpha;
+ end;
+end;
+
+
+procedure glBitmapConvertCalculateRGBAFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do begin
+ if Source.PixelDesc.RedRange > 0 then
+ Dest.Red := Round(Dest.PixelDesc.RedRange * Source.Red / Source.PixelDesc.RedRange);
+
+ if Source.PixelDesc.GreenRange > 0 then
+ Dest.Green := Round(Dest.PixelDesc.GreenRange * Source.Green / Source.PixelDesc.GreenRange);
+
+ if Source.PixelDesc.BlueRange > 0 then
+ Dest.Blue := Round(Dest.PixelDesc.BlueRange * Source.Blue / Source.PixelDesc.BlueRange);
+
+ if Source.PixelDesc.AlphaRange > 0 then
+ Dest.Alpha := Round(Dest.PixelDesc.AlphaRange * Source.Alpha / Source.PixelDesc.AlphaRange);
+ end;
+end;
+
+
+procedure glBitmapConvertShiftRGBAFunc(var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do
+ with TglBitmapPixelDesc(CustomData^) do begin
+ if Source.PixelDesc.RedRange > 0 then
+ Dest.Red := Source.Red shr RedShift;
+
+ if Source.PixelDesc.GreenRange > 0 then
+ Dest.Green := Source.Green shr GreenShift;
+
+ if Source.PixelDesc.BlueRange > 0 then
+ Dest.Blue := Source.Blue shr BlueShift;
+
+ if Source.PixelDesc.AlphaRange > 0 then
+ Dest.Alpha := Source.Alpha shr AlphaShift;
+ end;
+end;
+
+
+function TglBitmap.ConvertTo(NewFormat: TglBitmapInternalFormat): boolean;
+var
+ Source, Dest: TglBitmapPixelData;
+ PixelDesc: TglBitmapPixelDesc;
+
+ function CopyDirect: Boolean;
+ begin
+ Result :=
+ ((Source.PixelDesc.RedRange = Dest.PixelDesc.RedRange) or (Source.PixelDesc.RedRange = 0) or (Dest.PixelDesc.RedRange = 0)) and
+ ((Source.PixelDesc.GreenRange = Dest.PixelDesc.GreenRange) or (Source.PixelDesc.GreenRange = 0) or (Dest.PixelDesc.GreenRange = 0)) and
+ ((Source.PixelDesc.BlueRange = Dest.PixelDesc.BlueRange) or (Source.PixelDesc.BlueRange = 0) or (Dest.PixelDesc.BlueRange = 0)) and
+ ((Source.PixelDesc.AlphaRange = Dest.PixelDesc.AlphaRange) or (Source.PixelDesc.AlphaRange = 0) or (Dest.PixelDesc.AlphaRange = 0));
+ end;
+
+ function CanShift: Boolean;
+ begin
+ Result :=
+ ((Source.PixelDesc.RedRange >= Dest.PixelDesc.RedRange ) or (Source.PixelDesc.RedRange = 0) or (Dest.PixelDesc.RedRange = 0)) and
+ ((Source.PixelDesc.GreenRange >= Dest.PixelDesc.GreenRange) or (Source.PixelDesc.GreenRange = 0) or (Dest.PixelDesc.GreenRange = 0)) and
+ ((Source.PixelDesc.BlueRange >= Dest.PixelDesc.BlueRange ) or (Source.PixelDesc.BlueRange = 0) or (Dest.PixelDesc.BlueRange = 0)) and
+ ((Source.PixelDesc.AlphaRange >= Dest.PixelDesc.AlphaRange) or (Source.PixelDesc.AlphaRange = 0) or (Dest.PixelDesc.AlphaRange = 0));
+ end;
+
+ function GetShift(Source, Dest: Cardinal) : ShortInt;
+ begin
+ Result := 0;
+
+ while (Source > Dest) and (Source > 0) do begin
+ Inc(Result);
+ Source := Source shr 1;
+ end;
+ end;
+
+begin
+ if NewFormat <> InternalFormat then begin
+ FormatPreparePixel(Source, InternalFormat);
+ FormatPreparePixel(Dest, NewFormat);
+
+ if CopyDirect then
+ Result := AddFunc(Self, glBitmapConvertCopyFunc, False, NewFormat)
+ else
+ if CanShift then begin
+ PixelDesc.RedShift := GetShift(Source.PixelDesc.RedRange, Dest.PixelDesc.RedRange);
+ PixelDesc.GreenShift := GetShift(Source.PixelDesc.GreenRange, Dest.PixelDesc.GreenRange);
+ PixelDesc.BlueShift := GetShift(Source.PixelDesc.BlueRange, Dest.PixelDesc.BlueRange);
+ PixelDesc.AlphaShift := GetShift(Source.PixelDesc.AlphaRange, Dest.PixelDesc.AlphaRange);
+
+ Result := AddFunc(Self, glBitmapConvertShiftRGBAFunc, False, NewFormat, @PixelDesc);
+ end
+ else Result := AddFunc(Self, glBitmapConvertCalculateRGBAFunc, False, NewFormat);
+ end
+ else Result := True;
+end;
+
+
+function TglBitmap.RemoveAlpha: Boolean;
+begin
+ Result := False;
+
+ if (Assigned(Data)) then begin
+ if not (FormatIsUncompressed(InternalFormat) or FormatHasAlpha(InternalFormat)) then
+ raise EglBitmapUnsupportedInternalFormat.Create('RemoveAlpha - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ Result := ConvertTo(FormatGetWithoutAlpha(InternalFormat));
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromFunc(Func: TglBitmapFunction; CustomData: Pointer): boolean;
+begin
+ if not FormatIsUncompressed(InternalFormat) then
+ raise EglBitmapUnsupportedInternalFormat.Create('AddAlphaFromFunc - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ Result := AddFunc(Self, Func, False, FormatGetWithAlpha(InternalFormat), CustomData);
+end;
+
+
+function TglBitmap.GetHeight: Integer;
+begin
+ if ffY in fDimension.Fields then
+ Result := fDimension.Y
+ else
+ Result := -1;
+end;
+
+
+function TglBitmap.GetWidth: Integer;
+begin
+ if ffX in fDimension.Fields then
+ Result := fDimension.X
+ else
+ Result := -1;
+end;
+
+
+function TglBitmap.GetFileHeight: Integer;
+begin
+ Result := Max(1, Height);
+end;
+
+
+function TglBitmap.GetFileWidth: Integer;
+begin
+ Result := Max(1, Width);
+end;
+
+
+procedure glBitmapAlphaFunc(var FuncRec: TglBitmapFunctionRec);
+var
+ Temp: Single;
+begin
+ with FuncRec do begin
+ Temp :=
+ Source.Red / Source.PixelDesc.RedRange * 0.3 +
+ Source.Green / Source.PixelDesc.GreenRange * 0.59 +
+ Source.Blue / Source.PixelDesc.BlueRange * 0.11;
+
+ Dest.Alpha := Round (Dest.PixelDesc.AlphaRange * Temp);
+ end;
+end;
+
+
+function TglBitmap.AddAlphaFromglBitmap(glBitmap: TglBitmap; Func: TglBitmapFunction; CustomData: Pointer): boolean;
+var
+ pDest, pDest2, pSource: pByte;
+ TempHeight, TempWidth: Integer;
+ MapFunc: TglBitmapMapFunc;
+ DestUnMapFunc, UnMapFunc: TglBitmapUnMapFunc;
+
+ FuncRec: TglBitmapFunctionRec;
+begin
+ Result := False;
+
+ assert(Assigned(Data));
+ assert(Assigned(glBitmap));
+ assert(Assigned(glBitmap.Data));
+
+ if ((glBitmap.Width = Width) and (glBitmap.Height = Height)) then begin
+ // Convert to Data with Alpha
+ Result := ConvertTo(FormatGetWithAlpha(FormatGetUncompressed(InternalFormat)));
+
+ if not Assigned(Func) then
+ Func := glBitmapAlphaFunc;
+
+ // Values
+ TempHeight := glBitmap.FileHeight;
+ TempWidth := glBitmap.FileWidth;
+
+ FuncRec.Sender := Self;
+ FuncRec.CustomData := CustomData;
+
+ pDest := Data;
+ pDest2 := Data;
+ pSource := glBitmap.Data;
+
+ // Mapping
+ FormatPreparePixel(FuncRec.Dest, InternalFormat);
+ FormatPreparePixel(FuncRec.Source, glBitmap.InternalFormat);
+ MapFunc := FormatGetMapFunc(InternalFormat);
+ DestUnMapFunc := FormatGetUnMapFunc(InternalFormat);
+ UnMapFunc := FormatGetUnMapFunc(glBitmap.InternalFormat);
+
+ FuncRec.Size := Dimension;
+ FuncRec.Position.Fields := FuncRec.Size.Fields;
+
+ FuncRec.Position.Y := 0;
+ while FuncRec.Position.Y < TempHeight do begin
+ FuncRec.Position.X := 0;
+ while FuncRec.Position.X < TempWidth do begin
+ // Get Data
+ UnMapFunc(pSource, FuncRec.Source);
+ DestUnMapFunc(pDest2, FuncRec.Dest);
+ // Func
+ Func(FuncRec);
+ // Set Data
+ MapFunc(FuncRec.Dest, pDest);
+ Inc(FuncRec.Position.X);
+ end;
+ Inc(FuncRec.Position.Y);
+ end;
+ end;
+end;
+
+
+procedure TglBitmap.SetBorderColor(Red, Green, Blue, Alpha: Single);
+begin
+ fBorderColor[0] := Red;
+ fBorderColor[1] := Green;
+ fBorderColor[2] := Blue;
+ fBorderColor[3] := Alpha;
+
+ if ID > 0 then begin
+ Bind (False);
+
+ glTexParameterfv(Target, GL_TEXTURE_BORDER_COLOR, @fBorderColor[0]);
+ end;
+end;
+
+
+{ TglBitmap2D }
+
+procedure TglBitmap2D.SetDataPointer(Data: pByte; Format: TglBitmapInternalFormat; Width, Height: Integer);
+var
+ Idx, LineWidth: Integer;
+begin
+ inherited;
+
+ // Format
+ if FormatIsUncompressed(Format) then begin
+ fUnmapFunc := FormatGetUnMapFunc(Format);
+ fGetPixelFunc := GetPixel2DUnmap;
+
+ fMapFunc := FormatGetMapFunc(Format);
+ fSetPixelFunc := SetPixel2DUnmap;
+
+ // Assigning Data
+ if Assigned(Data) then begin
+ SetLength(fLines, GetHeight);
+
+ LineWidth := Trunc(GetWidth * FormatGetSize(InternalFormat));
+
+ for Idx := 0 to GetHeight -1 do begin
+ fLines[Idx] := Data;
+ Inc(fLines[Idx], Idx * LineWidth);
+ end;
+ end
+ else SetLength(fLines, 0);
+ end else begin
+ SetLength(fLines, 0);
+
+ fSetPixelFunc := nil;
+
+ case Format of
+ ifDXT1:
+ fGetPixelFunc := GetPixel2DDXT1;
+ ifDXT3:
+ fGetPixelFunc := GetPixel2DDXT3;
+ ifDXT5:
+ fGetPixelFunc := GetPixel2DDXT5;
+ else
+ fGetPixelFunc := nil;
+ end;
+ end;
+end;
+
+
+procedure TglBitmap2D.GetDXTColorBlock(pData: pByte; relX, relY: Integer; var Pixel: TglBitmapPixelData);
+type
+ PDXT1Chunk = ^TDXT1Chunk;
+ TDXT1Chunk = packed record
+ Color1: WORD;
+ Color2: WORD;
+ Pixels: array [0..3] of byte;
+ end;
+
+var
+ BasePtr: pDXT1Chunk;
+ PixPos: Integer;
+ Colors: array [0..3] of TRGBQuad;
+begin
+ BasePtr := pDXT1Chunk(pData);
+
+ PixPos := BasePtr^.Pixels[relY] shr (relX * 2) and $3;
+
+ if PixPos in [0, 2, 3] then begin
+ Colors[0].rgbRed := BasePtr^.Color1 and $F800 shr 8;
+ Colors[0].rgbGreen := BasePtr^.Color1 and $07E0 shr 3;
+ Colors[0].rgbBlue := BasePtr^.Color1 and $001F shl 3;
+ Colors[0].rgbReserved := 255;
+ end;
+
+ if PixPos in [1, 2, 3] then begin
+ Colors[1].rgbRed := BasePtr^.Color2 and $F800 shr 8;
+ Colors[1].rgbGreen := BasePtr^.Color2 and $07E0 shr 3;
+ Colors[1].rgbBlue := BasePtr^.Color2 and $001F shl 3;
+ Colors[1].rgbReserved := 255;
+ end;
+
+ if PixPos = 2 then begin
+ Colors[2].rgbRed := (Colors[0].rgbRed * 67 + Colors[1].rgbRed * 33) div 100;
+ Colors[2].rgbGreen := (Colors[0].rgbGreen * 67 + Colors[1].rgbGreen * 33) div 100;
+ Colors[2].rgbBlue := (Colors[0].rgbBlue * 67 + Colors[1].rgbBlue * 33) div 100;
+ Colors[2].rgbReserved := 255;
+ end;
+
+ if PixPos = 3 then begin
+ Colors[3].rgbRed := (Colors[0].rgbRed * 33 + Colors[1].rgbRed * 67) div 100;
+ Colors[3].rgbGreen := (Colors[0].rgbGreen * 33 + Colors[1].rgbGreen * 67) div 100;
+ Colors[3].rgbBlue := (Colors[0].rgbBlue * 33 + Colors[1].rgbBlue * 67) div 100;
+ if BasePtr^.Color1 > BasePtr^.Color2 then
+ Colors[3].rgbReserved := 255
+ else
+ Colors[3].rgbReserved := 0;
+ end;
+
+ Pixel.Red := Colors[PixPos].rgbRed;
+ Pixel.Green := Colors[PixPos].rgbGreen;
+ Pixel.Blue := Colors[PixPos].rgbBlue;
+ Pixel.Alpha := Colors[PixPos].rgbReserved;
+end;
+
+
+procedure TglBitmap2D.GetPixel2DDXT1(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+var
+ BasePtr: pByte;
+ PosX, PosY: Integer;
+begin
+ inherited;
+
+ if (Pos.Y <= Height) and (Pos.X <= Width) then begin
+ PosX := Pos.X div 4;
+ PosY := Pos.Y div 4;
+
+ BasePtr := Data;
+ Inc(BasePtr, (PosY * Width div 4 + PosX) * 8);
+
+ GetDXTColorBlock(BasePtr, Pos.X - PosX * 4, Pos.Y - PosY * 4, Pixel);
+ end;
+end;
+
+
+procedure TglBitmap2D.GetPixel2DDXT3(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+type
+ PDXT3AlphaChunk = ^TDXT3AlphaChunk;
+ TDXT3AlphaChunk = array [0..3] of WORD;
+
+var
+ ColorPtr: pByte;
+ AlphaPtr: PDXT3AlphaChunk;
+ PosX, PosY, relX, relY: Integer;
+begin
+ inherited;
+
+ if (Pos.Y <= Height) and (Pos.X <= Width) then begin
+ PosX := Pos.X div 4;
+ PosY := Pos.Y div 4;
+ relX := Pos.X - PosX * 4;
+ relY := Pos.Y - PosY * 4;
+
+ // get color value
+ AlphaPtr := PDXT3AlphaChunk(Data);
+ Inc(AlphaPtr, (PosY * Width div 4 + PosX) * 2);
+
+ ColorPtr := pByte(AlphaPtr);
+ Inc(ColorPtr, 8);
+
+ GetDXTColorBlock(ColorPtr, relX, relY, Pixel);
+
+ // extracting alpha
+ Pixel.Alpha := AlphaPtr^[relY] shr (4 * relX) and $0F shl 4;
+ end;
+end;
+
+
+procedure TglBitmap2D.GetPixel2DDXT5(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+var
+ ColorPtr: pByte;
+ AlphaPtr: PInt64;
+ PixPos, PosX, PosY, relX, relY: Integer;
+ Alpha0, Alpha1: Byte;
+begin
+ inherited;
+
+ if (Pos.Y <= Height) and (Pos.X <= Width) then begin
+ PosX := Pos.X div 4;
+ PosY := Pos.Y div 4;
+ relX := Pos.X - PosX * 4;
+ relY := Pos.Y - PosY * 4;
+
+ // get color value
+ AlphaPtr := PInt64(Data);
+ Inc(AlphaPtr, (PosY * Width div 4 + PosX) * 2);
+
+ ColorPtr := pByte(AlphaPtr);
+ Inc(ColorPtr, 8);
+
+ GetDXTColorBlock(ColorPtr, relX, relY, Pixel);
+
+ // extracting alpha
+ Alpha0 := AlphaPtr^ and $FF;
+ Alpha1 := AlphaPtr^ shr 8 and $FF;
+
+ PixPos := AlphaPtr^ shr (16 + (relY * 4 + relX) * 3) and $07;
+
+ // use alpha 0
+ if PixPos = 0 then begin
+ Pixel.Alpha := Alpha0;
+ end else
+
+ // use alpha 1
+ if PixPos = 1 then begin
+ Pixel.Alpha := Alpha1;
+ end else
+
+ // alpha interpolate 7 Steps
+ if Alpha0 > Alpha1 then begin
+ Pixel.Alpha := ((8 - PixPos) * Alpha0 + (PixPos - 1) * Alpha1) div 7;
+ end else
+
+ // alpha is 100% transparent or not transparent
+ if PixPos >= 6 then begin
+ if PixPos = 6 then
+ Pixel.Alpha := 0
+ else
+ Pixel.Alpha := 255;
+ end else
+
+ // alpha interpolate 5 Steps
+ begin
+ Pixel.Alpha := ((6 - PixPos) * Alpha0 + (PixPos - 1) * Alpha1) div 5;
+ end;
+ end;
+end;
+
+
+procedure TglBitmap2D.GetPixel2DUnmap(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+var
+ pTemp: pByte;
+begin
+ pTemp := fLines[Pos.Y];
+ Inc(pTemp, Pos.X * fPixelSize);
+
+ fUnmapFunc(pTemp, Pixel);
+end;
+
+
+procedure TglBitmap2D.SetPixel2DUnmap(const Pos: TglBitmapPixelPosition; const Pixel: TglBitmapPixelData);
+var
+ pTemp: pByte;
+begin
+ pTemp := fLines[Pos.Y];
+ Inc(pTemp, Pos.X * fPixelSize);
+
+ fMapFunc(Pixel, pTemp);
+end;
+
+
+function TglBitmap2D.FlipHorz: Boolean;
+var
+ Col, Row: Integer;
+ pTempDest, pDest, pSource: pByte;
+ ImgSize: Integer;
+begin
+ Result := Inherited FlipHorz;
+
+ if Assigned(Data) then begin
+ pSource := Data;
+ ImgSize := Height * fRowSize;
+
+ GetMem(pDest, ImgSize);
+ try
+ pTempDest := pDest;
+
+ Dec(pTempDest, fRowSize + fPixelSize);
+ for Row := 0 to Height -1 do begin
+ Inc(pTempDest, fRowSize * 2);
+ for Col := 0 to Width -1 do begin
+ Move(pSource^, pTempDest^, fPixelSize);
+
+ Inc(pSource, fPixelSize);
+ Dec(pTempDest, fPixelSize);
+ end;
+ end;
+
+ SetDataPointer(pDest, InternalFormat);
+
+ Result := True;
+ except
+ FreeMem(pDest);
+ raise;
+ end;
+ end;
+end;
+
+
+function TglBitmap2D.FlipVert: Boolean;
+var
+ Row: Integer;
+ pTempDest, pDest, pSource: pByte;
+begin
+ Result := Inherited FlipVert;
+
+ if Assigned(Data) then begin
+ pSource := Data;
+ GetMem(pDest, Height * fRowSize);
+ try
+ pTempDest := pDest;
+
+ Inc(pTempDest, Width * (Height -1) * fPixelSize);
+
+ for Row := 0 to Height -1 do begin
+ Move(pSource^, pTempDest^, fRowSize);
+
+ Dec(pTempDest, fRowSize);
+ Inc(pSource, fRowSize);
+ end;
+
+ SetDataPointer(pDest, InternalFormat);
+
+ Result := True;
+ except
+ FreeMem(pDest);
+ raise;
+ end;
+ end;
+end;
+
+
+procedure TglBitmap2D.UploadData (Target, Format, InternalFormat, Typ: Cardinal; BuildWithGlu: Boolean);
+begin
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+ // Upload data
+ if Self.InternalFormat in [ifDXT1, ifDXT3, ifDXT5] then
+ glCompressedTexImage2D(Target, 0, InternalFormat, Width, Height, 0, Trunc(Width * Height * FormatGetSize(Self.InternalFormat)), Data)
+ else
+
+ if BuildWithGlu then
+ gluBuild2DMipmaps(Target, InternalFormat, Width, Height, Format, Typ, Data)
+ else
+ glTexImage2D(Target, 0, InternalFormat, Width, Height, 0, Format, Typ, Data);
+
+ // Freigeben
+ if (FreeDataAfterGenTexture) then
+ FreeData;
+end;
+
+
+procedure TglBitmap2D.GenTexture(TestTextureSize: Boolean);
+var
+ BuildWithGlu, PotTex, TexRec: Boolean;
+ glFormat, glInternalFormat, glType: Cardinal;
+ TexSize: Integer;
+begin
+ if Assigned(Data) then begin
+ // Check Texture Size
+ if (TestTextureSize) then begin
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE, @TexSize);
+
+ if ((Height > TexSize) or (Width > TexSize)) then
+ raise EglBitmapSizeToLargeException.Create('TglBitmap2D.GenTexture - The size for the texture is to large. It''s may be not conform with the Hardware.');
+
+ PotTex := IsPowerOfTwo (Height) and IsPowerOfTwo (Width);
+ TexRec := (GL_ARB_texture_rectangle or GL_EXT_texture_rectangle or GL_NV_texture_rectangle) and
+ (Target = GL_TEXTURE_RECTANGLE_ARB);
+
+ if not (PotTex or GL_ARB_texture_non_power_of_two or GL_VERSION_2_0 or TexRec) then
+ raise EglBitmapNonPowerOfTwoException.Create('TglBitmap2D.GenTexture - Rendercontex dosn''t support non power of two texture.');
+ end;
+
+ CreateId;
+
+ SetupParameters(BuildWithGlu);
+ SelectFormat(InternalFormat, glFormat, glInternalFormat, glType);
+
+ UploadData(Target, glFormat, glInternalFormat, glType, BuildWithGlu);
+
+ // Infos sammeln
+ glAreTexturesResident(1, @ID, @fIsResident);
+ end;
+end;
+
+
+procedure TglBitmap2D.AfterConstruction;
+begin
+ inherited;
+
+ Target := GL_TEXTURE_2D;
+end;
+
+
+type
+ TMatrixItem = record
+ X, Y: Integer;
+ W: Single;
+ end;
+
+ PglBitmapToNormalMapRec = ^TglBitmapToNormalMapRec;
+ TglBitmapToNormalMapRec = Record
+ Scale: Single;
+ Heights: array of Single;
+ MatrixU : array of TMatrixItem;
+ MatrixV : array of TMatrixItem;
+ end;
+
+const
+ oneover255 = 1 / 255;
+
+procedure glBitmapToNormalMapPrepareFunc (var FuncRec: TglBitmapFunctionRec);
+var
+ Val: Single;
+begin
+ with FuncRec do begin
+ Val := Source.Red * 0.3 + Source.Green * 0.59 + Source.Blue * 0.11;
+ PglBitmapToNormalMapRec (CustomData)^.Heights[Position.Y * Size.X + Position.X] := Val * oneover255;
+ end;
+end;
+
+
+procedure glBitmapToNormalMapPrepareAlphaFunc (var FuncRec: TglBitmapFunctionRec);
+begin
+ with FuncRec do
+ PglBitmapToNormalMapRec (CustomData)^.Heights[Position.Y * Size.X + Position.X] := Source.Alpha * oneover255;
+end;
+
+
+procedure glBitmapToNormalMapFunc (var FuncRec: TglBitmapFunctionRec);
+type
+ TVec = Array[0..2] of Single;
+var
+ Idx: Integer;
+ du, dv: Double;
+ Len: Single;
+ Vec: TVec;
+
+ function GetHeight(X, Y: Integer): Single;
+ begin
+ with FuncRec do begin
+ X := Max(0, Min(Size.X -1, X));
+ Y := Max(0, Min(Size.Y -1, Y));
+
+ Result := PglBitmapToNormalMapRec (CustomData)^.Heights[Y * Size.X + X];
+ end;
+ end;
+
+begin
+ with FuncRec do begin
+ with PglBitmapToNormalMapRec (CustomData)^ do begin
+ du := 0;
+ for Idx := Low(MatrixU) to High(MatrixU) do
+ du := du + GetHeight(Position.X + MatrixU[Idx].X, Position.Y + MatrixU[Idx].Y) * MatrixU[Idx].W;
+
+ dv := 0;
+ for Idx := Low(MatrixU) to High(MatrixU) do
+ dv := dv + GetHeight(Position.X + MatrixV[Idx].X, Position.Y + MatrixV[Idx].Y) * MatrixV[Idx].W;
+
+ Vec[0] := -du * Scale;
+ Vec[1] := -dv * Scale;
+ Vec[2] := 1;
+ end;
+
+ // Normalize
+ Len := 1 / Sqrt(Sqr(Vec[0]) + Sqr(Vec[1]) + Sqr(Vec[2]));
+ if Len <> 0 then begin
+ Vec[0] := Vec[0] * Len;
+ Vec[1] := Vec[1] * Len;
+ Vec[2] := Vec[2] * Len;
+ end;
+
+ // Farbe zuweisem
+ Dest.Red := Trunc((Vec[0] + 1) * 127.5);
+ Dest.Green := Trunc((Vec[1] + 1) * 127.5);
+ Dest.Blue := Trunc((Vec[2] + 1) * 127.5);
+ end;
+end;
+
+
+procedure TglBitmap2D.ToNormalMap(Func: TglBitmapNormalMapFunc; Scale: Single; UseAlpha: Boolean);
+var
+ Rec: TglBitmapToNormalMapRec;
+
+ procedure SetEntry (var Matrix: array of TMatrixItem; Index, X, Y: Integer; W: Single);
+ begin
+ if (Index >= Low(Matrix)) and (Index <= High(Matrix)) then begin
+ Matrix[Index].X := X;
+ Matrix[Index].Y := Y;
+ Matrix[Index].W := W;
+ end;
+ end;
+
+begin
+ if not FormatIsUncompressed(InternalFormat) then
+ raise EglBitmapUnsupportedInternalFormat.Create('TglBitmap2D.ToNormalMap - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ if Scale > 100 then
+ Rec.Scale := 100
+ else
+ if Scale < -100 then
+ Rec.Scale := -100
+ else
+ Rec.Scale := Scale;
+
+ SetLength(Rec.Heights, Width * Height);
+ try
+ case Func of
+ nm4Samples:
+ begin
+ SetLength(Rec.MatrixU, 2);
+ SetEntry(Rec.MatrixU, 0, -1, 0, -0.5);
+ SetEntry(Rec.MatrixU, 1, 1, 0, 0.5);
+
+ SetLength(Rec.MatrixV, 2);
+ SetEntry(Rec.MatrixV, 0, 0, 1, 0.5);
+ SetEntry(Rec.MatrixV, 1, 0, -1, -0.5);
+ end;
+ nmSobel:
+ begin
+ SetLength(Rec.MatrixU, 6);
+ SetEntry(Rec.MatrixU, 0, -1, 1, -1.0);
+ SetEntry(Rec.MatrixU, 1, -1, 0, -2.0);
+ SetEntry(Rec.MatrixU, 2, -1, -1, -1.0);
+ SetEntry(Rec.MatrixU, 3, 1, 1, 1.0);
+ SetEntry(Rec.MatrixU, 4, 1, 0, 2.0);
+ SetEntry(Rec.MatrixU, 5, 1, -1, 1.0);
+
+ SetLength(Rec.MatrixV, 6);
+ SetEntry(Rec.MatrixV, 0, -1, 1, 1.0);
+ SetEntry(Rec.MatrixV, 1, 0, 1, 2.0);
+ SetEntry(Rec.MatrixV, 2, 1, 1, 1.0);
+ SetEntry(Rec.MatrixV, 3, -1, -1, -1.0);
+ SetEntry(Rec.MatrixV, 4, 0, -1, -2.0);
+ SetEntry(Rec.MatrixV, 5, 1, -1, -1.0);
+ end;
+ nm3x3:
+ begin
+ SetLength(Rec.MatrixU, 6);
+ SetEntry(Rec.MatrixU, 0, -1, 1, -1/6);
+ SetEntry(Rec.MatrixU, 1, -1, 0, -1/6);
+ SetEntry(Rec.MatrixU, 2, -1, -1, -1/6);
+ SetEntry(Rec.MatrixU, 3, 1, 1, 1/6);
+ SetEntry(Rec.MatrixU, 4, 1, 0, 1/6);
+ SetEntry(Rec.MatrixU, 5, 1, -1, 1/6);
+
+ SetLength(Rec.MatrixV, 6);
+ SetEntry(Rec.MatrixV, 0, -1, 1, 1/6);
+ SetEntry(Rec.MatrixV, 1, 0, 1, 1/6);
+ SetEntry(Rec.MatrixV, 2, 1, 1, 1/6);
+ SetEntry(Rec.MatrixV, 3, -1, -1, -1/6);
+ SetEntry(Rec.MatrixV, 4, 0, -1, -1/6);
+ SetEntry(Rec.MatrixV, 5, 1, -1, -1/6);
+ end;
+ nm5x5:
+ begin
+ SetLength(Rec.MatrixU, 20);
+ SetEntry(Rec.MatrixU, 0, -2, 2, -1 / 16);
+ SetEntry(Rec.MatrixU, 1, -1, 2, -1 / 10);
+ SetEntry(Rec.MatrixU, 2, 1, 2, 1 / 10);
+ SetEntry(Rec.MatrixU, 3, 2, 2, 1 / 16);
+ SetEntry(Rec.MatrixU, 4, -2, 1, -1 / 10);
+ SetEntry(Rec.MatrixU, 5, -1, 1, -1 / 8);
+ SetEntry(Rec.MatrixU, 6, 1, 1, 1 / 8);
+ SetEntry(Rec.MatrixU, 7, 2, 1, 1 / 10);
+ SetEntry(Rec.MatrixU, 8, -2, 0, -1 / 2.8);
+ SetEntry(Rec.MatrixU, 9, -1, 0, -0.5);
+ SetEntry(Rec.MatrixU, 10, 1, 0, 0.5);
+ SetEntry(Rec.MatrixU, 11, 2, 0, 1 / 2.8);
+ SetEntry(Rec.MatrixU, 12, -2, -1, -1 / 10);
+ SetEntry(Rec.MatrixU, 13, -1, -1, -1 / 8);
+ SetEntry(Rec.MatrixU, 14, 1, -1, 1 / 8);
+ SetEntry(Rec.MatrixU, 15, 2, -1, 1 / 10);
+ SetEntry(Rec.MatrixU, 16, -2, -2, -1 / 16);
+ SetEntry(Rec.MatrixU, 17, -1, -2, -1 / 10);
+ SetEntry(Rec.MatrixU, 18, 1, -2, 1 / 10);
+ SetEntry(Rec.MatrixU, 19, 2, -2, 1 / 16);
+
+ SetLength(Rec.MatrixV, 20);
+ SetEntry(Rec.MatrixV, 0, -2, 2, 1 / 16);
+ SetEntry(Rec.MatrixV, 1, -1, 2, 1 / 10);
+ SetEntry(Rec.MatrixV, 2, 0, 2, 0.25);
+ SetEntry(Rec.MatrixV, 3, 1, 2, 1 / 10);
+ SetEntry(Rec.MatrixV, 4, 2, 2, 1 / 16);
+ SetEntry(Rec.MatrixV, 5, -2, 1, 1 / 10);
+ SetEntry(Rec.MatrixV, 6, -1, 1, 1 / 8);
+ SetEntry(Rec.MatrixV, 7, 0, 1, 0.5);
+ SetEntry(Rec.MatrixV, 8, 1, 1, 1 / 8);
+ SetEntry(Rec.MatrixV, 9, 2, 1, 1 / 16);
+ SetEntry(Rec.MatrixV, 10, -2, -1, -1 / 16);
+ SetEntry(Rec.MatrixV, 11, -1, -1, -1 / 8);
+ SetEntry(Rec.MatrixV, 12, 0, -1, -0.5);
+ SetEntry(Rec.MatrixV, 13, 1, -1, -1 / 8);
+ SetEntry(Rec.MatrixV, 14, 2, -1, -1 / 10);
+ SetEntry(Rec.MatrixV, 15, -2, -2, -1 / 16);
+ SetEntry(Rec.MatrixV, 16, -1, -2, -1 / 10);
+ SetEntry(Rec.MatrixV, 17, 0, -2, -0.25);
+ SetEntry(Rec.MatrixV, 18, 1, -2, -1 / 10);
+ SetEntry(Rec.MatrixV, 19, 2, -2, -1 / 16);
+ end;
+ end;
+
+ // Daten Sammeln
+ if UseAlpha and FormatHasAlpha(InternalFormat) then
+ AddFunc(glBitmapToNormalMapPrepareAlphaFunc, False, @Rec)
+ else
+ AddFunc(glBitmapToNormalMapPrepareFunc, False, @Rec);
+
+ // Neues Bild berechnen
+ AddFunc(glBitmapToNormalMapFunc, False, @Rec);
+ finally
+ SetLength(Rec.Heights, 0);
+ end;
+end;
+
+
+procedure TglBitmap2D.GrabScreen(Top, Left, Right, Bottom: Integer; Format: TglBitmapInternalFormat);
+var
+ Temp: pByte;
+ Size: Integer;
+ glFormat, glInternalFormat, glType: Cardinal;
+begin
+ if not FormatIsUncompressed(Format) then
+ raise EglBitmapUnsupportedInternalFormat.Create('TglBitmap2D.GrabScreen - ' + UNSUPPORTED_INTERNAL_FORMAT);
+
+ // Only to select Formats
+ SelectFormat(Format, glFormat, glInternalFormat, glType, False);
+
+ Size := FormatGetImageSize(glBitmapPosition(Right - Left, Bottom - Top), Format);
+ GetMem(Temp, Size);
+ try
+ glPixelStorei(GL_PACK_ALIGNMENT, 1);
+ glReadPixels(Left, Top, Right - Left, Bottom - Top, glFormat, glType, Temp);
+
+ // Set Data
+ SetDataPointer(Temp, Format, Right - Left, Bottom - Top);
+
+ // Flip
+ FlipVert;
+ except
+ FreeMem(Temp);
+ raise;
+ end;
+end;
+
+
+procedure TglBitmap2D.GetDataFromTexture;
+var
+ Temp: pByte;
+ TempWidth, TempHeight, RedSize, GreenSize, BlueSize, AlphaSize, LumSize: Integer;
+ TempType, TempIntFormat: Cardinal;
+ IntFormat: TglBitmapInternalFormat;
+begin
+ Bind;
+
+ // Request Data
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_WIDTH, @TempWidth);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_HEIGHT, @TempHeight);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_INTERNAL_FORMAT, @TempIntFormat);
+
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_RED_SIZE, @RedSize);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_GREEN_SIZE, @GreenSize);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_BLUE_SIZE, @BlueSize);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_ALPHA_SIZE, @AlphaSize);
+ glGetTexLevelParameteriv(Target, 0, GL_TEXTURE_LUMINANCE_SIZE, @LumSize);
+
+ // Get glBitmapInternalFormat from TempIntFormat
+ TempType := GL_UNSIGNED_BYTE;
+ case TempIntFormat of
+ GL_ALPHA:
+ IntFormat := ifAlpha;
+ GL_LUMINANCE:
+ IntFormat := ifLuminance;
+ GL_LUMINANCE_ALPHA:
+ IntFormat := ifLuminanceAlpha;
+ GL_RGB4:
+ begin
+ IntFormat := ifR5G6B5;
+ TempIntFormat := GL_RGB;
+ TempType := GL_UNSIGNED_SHORT_5_6_5;
+ end;
+ GL_RGB, GL_RGB8:
+ IntFormat := ifRGB8;
+ GL_RGBA, GL_RGBA4, GL_RGBA8:
+ begin
+ if (RedSize = 4) and (BlueSize = 4) and (GreenSize = 4) and (AlphaSize = 4) then begin
+ IntFormat := ifRGBA4;
+ TempIntFormat := GL_BGRA;
+ TempType := GL_UNSIGNED_SHORT_4_4_4_4_REV;
+ end else
+ if (RedSize = 5) and (BlueSize = 5) and (GreenSize = 5) and (AlphaSize = 1) then begin
+ IntFormat := ifRGB5A1;
+ TempIntFormat := GL_BGRA;
+ TempType := GL_UNSIGNED_SHORT_1_5_5_5_REV;
+ end else begin
+ IntFormat := ifRGBA8;
+ end;
+ end;
+ GL_BGR:
+ IntFormat := ifBGR8;
+ GL_BGRA:
+ IntFormat := ifBGRA8;
+ GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ IntFormat := ifDXT1;
+ GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+ IntFormat := ifDXT1;
+ GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+ IntFormat := ifDXT3;
+ GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+ IntFormat := ifDXT5;
+ else
+ IntFormat := ifEmpty;
+ end;
+
+ // Getting data from OpenGL
+ GetMem(Temp, FormatGetImageSize(glBitmapPosition(TempWidth, TempHeight), IntFormat));
+ try
+ if FormatIsCompressed(IntFormat) and (GL_VERSION_1_3 or GL_ARB_texture_compression) then
+ glGetCompressedTexImage(Target, 0, Temp)
+ else
+ glGetTexImage(Target, 0, TempIntFormat, TempType, Temp);
+
+ SetDataPointer(Temp, IntFormat, TempWidth, TempHeight);
+ except
+ FreeMem(Temp);
+ raise;
+ end;
+end;
+
+
+function TglBitmap2D.GetScanline(Index: Integer): Pointer;
+begin
+ if (Index >= Low(fLines)) and (Index <= High(fLines)) then
+ Result := fLines[Index]
+ else
+ Result := nil;
+end;
+
+
+{ TglBitmap1D }
+
+procedure TglBitmap1D.SetDataPointer(Data: pByte; Format: TglBitmapInternalFormat; Width, Height: Integer);
+var
+ pTemp: pByte;
+ Size: Integer;
+begin
+ if Height > 1 then begin
+ // extract first line of the data
+ Size := FormatGetImageSize(glBitmapPosition(Width), Format);
+ GetMem(pTemp, Size);
+
+ Move(Data^, pTemp^, Size);
+
+ FreeMem(Data);
+ end else
+ pTemp := Data;
+
+ // set data pointer
+ inherited SetDataPointer(pTemp, Format, Width);
+
+ if FormatIsUncompressed(Format) then begin
+ fUnmapFunc := FormatGetUnMapFunc(Format);
+ fGetPixelFunc := GetPixel1DUnmap;
+ end;
+end;
+
+
+procedure TglBitmap1D.GetPixel1DUnmap(const Pos: TglBitmapPixelPosition; var Pixel: TglBitmapPixelData);
+var
+ pTemp: pByte;
+begin
+ pTemp := Data;
+ Inc(pTemp, Pos.X * fPixelSize);
+
+ fUnmapFunc(pTemp, Pixel);
+end;
+
+
+function TglBitmap1D.FlipHorz: Boolean;
+var
+ Col: Integer;
+ pTempDest, pDest, pSource: pByte;
+begin
+ Result := Inherited FlipHorz;
+
+ if Assigned(Data) and FormatIsUncompressed(InternalFormat) then begin
+ pSource := Data;
+
+ GetMem(pDest, fRowSize);
+ try
+ pTempDest := pDest;
+
+ Inc(pTempDest, fRowSize);
+ for Col := 0 to Width -1 do begin
+ Move(pSource^, pTempDest^, fPixelSize);
+
+ Inc(pSource, fPixelSize);
+ Dec(pTempDest, fPixelSize);
+ end;
+
+ SetDataPointer(pDest, InternalFormat);
+
+ Result := True;
+ finally
+ FreeMem(pDest);
+ end;
+ end;
+end;
+
+
+procedure TglBitmap1D.UploadData (Target, Format, InternalFormat, Typ: Cardinal; BuildWithGlu: Boolean);
+begin
+ // Upload data
+ if Self.InternalFormat in [ifDXT1, ifDXT3, ifDXT5] then
+ glCompressedTexImage1D(Target, 0, InternalFormat, Width, 0, Trunc(Width * FormatGetSize(Self.InternalFormat)), Data)
+ else
+
+ // Upload data
+ if BuildWithGlu then
+ gluBuild1DMipmaps(Target, InternalFormat, Width, Format, Typ, Data)
+ else
+ glTexImage1D(Target, 0, InternalFormat, Width, 0, Format, Typ, Data);
+
+ // Freigeben
+ if (FreeDataAfterGenTexture) then
+ FreeData;
+end;
+
+
+procedure TglBitmap1D.GenTexture(TestTextureSize: Boolean);
+var
+ BuildWithGlu, TexRec: Boolean;
+ glFormat, glInternalFormat, glType: Cardinal;
+ TexSize: Integer;
+begin
+ if Assigned(Data) then begin
+ // Check Texture Size
+ if (TestTextureSize) then begin
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE, @TexSize);
+
+ if (Width > TexSize) then
+ raise EglBitmapSizeToLargeException.Create('TglBitmap1D.GenTexture - The size for the texture is to large. It''s may be not conform with the Hardware.');
+
+ TexRec := (GL_ARB_texture_rectangle or GL_EXT_texture_rectangle or GL_NV_texture_rectangle) and
+ (Target = GL_TEXTURE_RECTANGLE_ARB);
+
+ if not (IsPowerOfTwo (Width) or GL_ARB_texture_non_power_of_two or GL_VERSION_2_0 or TexRec) then
+ raise EglBitmapNonPowerOfTwoException.Create('TglBitmap1D.GenTexture - Rendercontex dosn''t support non power of two texture.');
+ end;
+
+ CreateId;
+
+ SetupParameters(BuildWithGlu);
+ SelectFormat(InternalFormat, glFormat, glInternalFormat, glType);
+
+ UploadData(Target, glFormat, glInternalFormat, glType, BuildWithGlu);
+
+ // Infos sammeln
+ glAreTexturesResident(1, @ID, @fIsResident);
+ end;
+end;
+
+
+procedure TglBitmap1D.AfterConstruction;
+begin
+ inherited;
+
+ Target := GL_TEXTURE_1D;
+end;
+
+
+{ TglBitmapCubeMap }
+
+procedure TglBitmapCubeMap.AfterConstruction;
+begin
+ inherited;
+
+ if not (GL_VERSION_1_3 or GL_ARB_texture_cube_map or GL_EXT_texture_cube_map) then
+ raise EglBitmapException.Create('TglBitmapCubeMap.AfterConstruction - CubeMaps are unsupported.');
+
+ SetWrap; // set all to GL_CLAMP_TO_EDGE
+ Target := GL_TEXTURE_CUBE_MAP;
+ fGenMode := GL_REFLECTION_MAP;
+end;
+
+
+procedure TglBitmapCubeMap.Bind(EnableTexCoordsGen, EnableTextureUnit: Boolean);
+begin
+ inherited Bind (EnableTextureUnit);
+
+ if EnableTexCoordsGen then begin
+ glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, fGenMode);
+ glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, fGenMode);
+ glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, fGenMode);
+ glEnable(GL_TEXTURE_GEN_S);
+ glEnable(GL_TEXTURE_GEN_T);
+ glEnable(GL_TEXTURE_GEN_R);
+ end;
+end;
+
+
+procedure TglBitmapCubeMap.GenerateCubeMap(CubeTarget: Cardinal; TestTextureSize: Boolean);
+var
+ glFormat, glInternalFormat, glType: Cardinal;
+ BuildWithGlu: Boolean;
+ TexSize: Integer;
+begin
+ // Check Texture Size
+ if (TestTextureSize) then begin
+ glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, @TexSize);
+
+ if ((Height > TexSize) or (Width > TexSize)) then
+ raise EglBitmapSizeToLargeException.Create('TglBitmapCubeMap.GenTexture - The size for the Cubemap is to large. It''s may be not conform with the Hardware.');
+
+ if not ((IsPowerOfTwo (Height) and IsPowerOfTwo (Width)) or GL_VERSION_2_0 or GL_ARB_texture_non_power_of_two) then
+ raise EglBitmapNonPowerOfTwoException.Create('TglBitmapCubeMap.GenTexture - Cubemaps dosn''t support non power of two texture.');
+ end;
+
+ // create Texture
+ if ID = 0 then begin
+ CreateID;
+ SetupParameters(BuildWithGlu);
+ end;
+
+ SelectFormat(InternalFormat, glFormat, glInternalFormat, glType);
+
+ UploadData (CubeTarget, glFormat, glInternalFormat, glType, BuildWithGlu);
+end;
+
+
+procedure TglBitmapCubeMap.GenTexture(TestTextureSize: Boolean);
+begin
+ Assert(False, 'TglBitmapCubeMap.GenTexture - Don''t call GenTextures directly.');
+end;
+
+
+procedure TglBitmapCubeMap.Unbind(DisableTexCoordsGen,
+ DisableTextureUnit: Boolean);
+begin
+ inherited Unbind (DisableTextureUnit);
+
+ if DisableTexCoordsGen then begin
+ glDisable(GL_TEXTURE_GEN_S);
+ glDisable(GL_TEXTURE_GEN_T);
+ glDisable(GL_TEXTURE_GEN_R);
+ end;
+end;
+
+
+{ TglBitmapNormalMap }
+
+type
+ TVec = Array[0..2] of Single;
+ TglBitmapNormalMapGetVectorFunc = procedure (var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+
+ PglBitmapNormalMapRec = ^TglBitmapNormalMapRec;
+ TglBitmapNormalMapRec = record
+ HalfSize : Integer;
+ Func: TglBitmapNormalMapGetVectorFunc;
+ end;
+
+
+procedure glBitmapNormalMapPosX(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := HalfSize;
+ Vec[1] := - (Position.Y + 0.5 - HalfSize);
+ Vec[2] := - (Position.X + 0.5 - HalfSize);
+end;
+
+
+procedure glBitmapNormalMapNegX(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := - HalfSize;
+ Vec[1] := - (Position.Y + 0.5 - HalfSize);
+ Vec[2] := Position.X + 0.5 - HalfSize;
+end;
+
+
+procedure glBitmapNormalMapPosY(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := Position.X + 0.5 - HalfSize;
+ Vec[1] := HalfSize;
+ Vec[2] := Position.Y + 0.5 - HalfSize;
+end;
+
+
+procedure glBitmapNormalMapNegY(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := Position.X + 0.5 - HalfSize;
+ Vec[1] := - HalfSize;
+ Vec[2] := - (Position.Y + 0.5 - HalfSize);
+end;
+
+
+procedure glBitmapNormalMapPosZ(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := Position.X + 0.5 - HalfSize;
+ Vec[1] := - (Position.Y + 0.5 - HalfSize);
+ Vec[2] := HalfSize;
+end;
+
+
+procedure glBitmapNormalMapNegZ(var Vec: TVec; const Position: TglBitmapPixelPosition; const HalfSize: Integer);
+begin
+ Vec[0] := - (Position.X + 0.5 - HalfSize);
+ Vec[1] := - (Position.Y + 0.5 - HalfSize);
+ Vec[2] := - HalfSize;
+end;
+
+
+procedure glBitmapNormalMapFunc(var FuncRec: TglBitmapFunctionRec);
+var
+ Vec : TVec;
+ Len: Single;
+begin
+ with FuncRec do begin
+ with PglBitmapNormalMapRec (CustomData)^ do begin
+ Func(Vec, Position, HalfSize);
+
+ // Normalize
+ Len := 1 / Sqrt(Sqr(Vec[0]) + Sqr(Vec[1]) + Sqr(Vec[2]));
+ if Len <> 0 then begin
+ Vec[0] := Vec[0] * Len;
+ Vec[1] := Vec[1] * Len;
+ Vec[2] := Vec[2] * Len;
+ end;
+
+ // Scale Vector and AddVectro
+ Vec[0] := Vec[0] * 0.5 + 0.5;
+ Vec[1] := Vec[1] * 0.5 + 0.5;
+ Vec[2] := Vec[2] * 0.5 + 0.5;
+ end;
+
+ // Set Color
+ Dest.Red := Round(Vec[0] * 255);
+ Dest.Green := Round(Vec[1] * 255);
+ Dest.Blue := Round(Vec[2] * 255);
+ end;
+end;
+
+
+procedure TglBitmapNormalMap.AfterConstruction;
+begin
+ inherited;
+
+ fGenMode := GL_NORMAL_MAP;
+end;
+
+
+procedure TglBitmapNormalMap.GenerateNormalMap(Size: Integer;
+ TestTextureSize: Boolean);
+var
+ Rec: TglBitmapNormalMapRec;
+ SizeRec: TglBitmapPixelPosition;
+begin
+ Rec.HalfSize := Size div 2;
+
+ FreeDataAfterGenTexture := False;
+
+ SizeRec.Fields := [ffX, ffY];
+ SizeRec.X := Size;
+ SizeRec.Y := Size;
+
+ // Positive X
+ Rec.Func := glBitmapNormalMapPosX;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_X, TestTextureSize);
+
+ // Negative X
+ Rec.Func := glBitmapNormalMapNegX;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, TestTextureSize);
+
+ // Positive Y
+ Rec.Func := glBitmapNormalMapPosY;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, TestTextureSize);
+
+ // Negative Y
+ Rec.Func := glBitmapNormalMapNegY;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, TestTextureSize);
+
+ // Positive Z
+ Rec.Func := glBitmapNormalMapPosZ;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, TestTextureSize);
+
+ // Negative Z
+ Rec.Func := glBitmapNormalMapNegZ;
+ LoadFromFunc (SizeRec, glBitmapNormalMapFunc, ifBGR8, @Rec);
+ GenerateCubeMap(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, TestTextureSize);
+end;
+
+
+
+initialization
+ glBitmapSetDefaultFormat(tfDefault);
+ glBitmapSetDefaultFilter(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
+ glBitmapSetDefaultWrap(GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE);
+
+ glBitmapSetDefaultFreeDataAfterGenTexture(True);
+ glBitmapSetDefaultDeleteTextureOnFree(True);
+
+finalization
+
+end.
projects / LazOpenGLCore.git / commitdiff