Unit glBitmap

Description

Uses

Classes, Interfaces, Objects and Records

Functions and Procedures

Types

Constants

Variables

Description

glBitmap by Steffen Xonna aka Lossy eX (2003-2008) http://www.opengl24.de/index.php?cat=header&file=glbitmap

modified by Delphi OpenGL Community (http://delphigl.com/) (2013)

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

The glBitmap is a Delphi/FPC unit that contains several wrapper classes to manage OpenGL texture objects. Below you can find a list of the main functionality of this classes: - load texture data from file (e.g. BMP, TGA, DDS, PNG, JPEG, ...) - load texture data from several other image objects (e.g. TBitmap, TLazIntfImage, SDL Surface) - save texture data to file (e.g. BMP, TGA, DDS, PNG, JPEG, ...) - save texture data to several other image objects (e.g. TBitmap, TLazIntfImage, SDL Surface) - support for many texture formats (e.g. RGB8, BGR8, RGBA8, BGRA8, ...) - manage texture properties (e.g. Filter, Clamp, Mipmap, ...) - upload texture data to video card - download texture data from video card - manipulate texture data (e.g. add alpha, remove alpha, convert to other format, switch RGB, ...)

Overview

Classes, Interfaces, Objects and Records

Name	Description
Class `EglBitmap`
Class `EglBitmapNotSupported`
Class `EglBitmapSizeToLarge`
Class `EglBitmapNonPowerOfTwo`
Class `EglBitmapUnsupportedFormat`
packed record `TglBitmapRec4ui`
packed record `TglBitmapRec4ub`
packed record `TglBitmapRec4ul`
packed record `TglBitmapPixelData`
packed record `TglBitmapSize`
Class `TglBitmapFormatDescriptor`
record `TglBitmapFunctionRec`
Class `TglBitmapData`
Class `TglBitmap`
Class `TglBitmap1D`
Class `TglBitmap2D`
Class `TglBitmapCubeMap`
Class `TglBitmapNormalMap`

Functions and Procedures

procedure glBitmapSetDefaultDeleteTextureOnFree(const aDeleteTextureOnFree: Boolean);

procedure glBitmapSetDefaultFreeDataAfterGenTexture(const aFreeData: Boolean);

procedure glBitmapSetDefaultMipmap(const aValue: TglBitmapMipMap);

procedure glBitmapSetDefaultFormat(const aFormat: TglBitmapFormat);

procedure glBitmapSetDefaultFilter(const aMin, aMag: Integer);

procedure glBitmapSetDefaultWrap( const S: Cardinal = GL_CLAMP_TO_EDGE; const T: Cardinal = GL_CLAMP_TO_EDGE; const R: Cardinal = GL_CLAMP_TO_EDGE);

procedure glBitmapSetDefaultSwizzle(const r: GLenum = GL_RED; g: GLenum = GL_GREEN; b: GLenum = GL_BLUE; a: GLenum = GL_ALPHA);

function glBitmapGetDefaultDeleteTextureOnFree: Boolean;

function glBitmapGetDefaultFreeDataAfterGenTexture: Boolean;

function glBitmapGetDefaultMipmap: TglBitmapMipMap;

function glBitmapGetDefaultFormat: TglBitmapFormat;

procedure glBitmapGetDefaultFilter(var aMin, aMag: Cardinal);

procedure glBitmapGetDefaultTextureWrap(var S, T, R: Cardinal);

procedure glBitmapGetDefaultSwizzle(var r, g, b, a: GLenum);

function glBitmapSize(X: Integer = -1; Y: Integer = -1): TglBitmapSize;

function glBitmapPosition(X: Integer = -1; Y: Integer = -1): TglBitmapPixelPosition;

function glBitmapRec4ub(const r, g, b, a: Byte): TglBitmapRec4ub;

function glBitmapRec4ui(const r, g, b, a: Cardinal): TglBitmapRec4ui;

function glBitmapRec4ul(const r, g, b, a: QWord): TglBitmapRec4ul;

function glBitmapRec4ubCompare(const r1, r2: TglBitmapRec4ub): Boolean;

function glBitmapRec4uiCompare(const r1, r2: TglBitmapRec4ui): Boolean;

function glBitmapCreateTestData(const aFormat: TglBitmapFormat): TglBitmapData;

Types

TglBitmapFormat = (...);

TglBitmapFileType = (...);

TglBitmapFileTypes = set of TglBitmapFileType;

TglBitmapMipMap = (...);

TglBitmapNormalMapFunc = (...);

PglBitmapPixelData = ˆTglBitmapPixelData;

TglBitmapSizeFields = set of (ffX, ffY);

TglBitmapPixelPosition = TglBitmapSize;

TglBitmapFunction = procedure(var FuncRec: TglBitmapFunctionRec);

Constants

NULL_SIZE: TglBitmapSize = (Fields: []; X: 0; Y: 0);

Description

Functions and Procedures

procedure glBitmapSetDefaultDeleteTextureOnFree(const aDeleteTextureOnFree: Boolean);

procedure glBitmapSetDefaultFreeDataAfterGenTexture(const aFreeData: Boolean);

procedure glBitmapSetDefaultMipmap(const aValue: TglBitmapMipMap);

procedure glBitmapSetDefaultFormat(const aFormat: TglBitmapFormat);

procedure glBitmapSetDefaultFilter(const aMin, aMag: Integer);

procedure glBitmapSetDefaultWrap( const S: Cardinal = GL_CLAMP_TO_EDGE; const T: Cardinal = GL_CLAMP_TO_EDGE; const R: Cardinal = GL_CLAMP_TO_EDGE);

procedure glBitmapSetDefaultSwizzle(const r: GLenum = GL_RED; g: GLenum = GL_GREEN; b: GLenum = GL_BLUE; a: GLenum = GL_ALPHA);