function glBitmapPosition(X: Integer = -1; Y: Integer = -1): TglBitmapPixelPosition;
function glBitmapColorRec(const r, g, b, a: Cardinal): TglBitmapColorRec;
+function glBitmapColorRecCmp(const r1, r2: TglBitmapColorRec): Boolean;
var
glBitmapDefaultDeleteTextureOnFree: Boolean;
fFormat: TglBitmapFormat;
fWithAlpha: TglBitmapFormat;
fWithoutAlpha: TglBitmapFormat;
+ fRGBInverted: TglBitmapFormat;
fPixelSize: Single;
fRange: TglBitmapColorRec;
property Format: TglBitmapFormat read fFormat;
property WithAlpha: TglBitmapFormat read fWithAlpha;
property WithoutAlpha: TglBitmapFormat read fWithoutAlpha;
+ property RGBInverted: TglBitmapFormat read fRGBInverted;
property Components: Integer read GetComponents;
property PixelSize: Single read fPixelSize;
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- TBitfieldFormat = class(TFormatDescriptor)
+ TbmpBitfieldFormat = class(TFormatDescriptor)
private
procedure SetRedMask (const aValue: UInt64);
procedure SetGreenMask(const aValue: UInt64);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- TColorTableEnty = packed record
+ TbmpColorTableEnty = packed record
b, g, r, a: Byte;
end;
- TColorTable = array of TColorTableEnty;
- TColorTableFormat = class(TFormatDescriptor)
+ TbmpColorTable = array of TbmpColorTableEnty;
+ TbmpColorTableFormat = class(TFormatDescriptor)
private
- fColorTable: TColorTable;
+ fColorTable: TbmpColorTable;
public
property PixelSize: Single read fPixelSize write fPixelSize;
- property ColorTable: TColorTable read fColorTable write fColorTable;
+ property ColorTable: TbmpColorTable read fColorTable write fColorTable;
property Range: TglBitmapColorRec read fRange write fRange;
+ property Shift: TShiftRec read fShift write fShift;
+ property Format: TglBitmapFormat read fFormat write fFormat;
+
+ procedure CreateColorTable;
procedure Map(const aPixel: TglBitmapPixelData; var aData: PByte; var aMapData: Pointer); override;
procedure Unmap(var aData: PByte; var aPixel: TglBitmapPixelData; var aMapData: Pointer); override;
end;
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+function glBitmapColorRecCmp(const r1, r2: TglBitmapColorRec): Boolean;
+var
+ i: Integer;
+begin
+ result := false;
+ for i := 0 to high(r1.arr) do
+ if (r1.arr[i] <> r2.arr[i]) then
+ exit;
+ result := true;
+end;
+
+/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+function glBitmapShiftRec(const r, g, b, a: Byte): TShiftRec;
+begin
+ result.r := r;
+ result.g := g;
+ result.b := b;
+ result.a := a;
+end;
+
+/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function FormatGetSupportedFiles(const aFormat: TglBitmapFormat): TglBitmapFileTypes;
begin
+ result := [ftDDS];
+
+ if (aFormat in [
+ //4 bbp
+ tfLuminance4,
+
+ //8bpp
+ tfR3G3B2, tfLuminance8,
+
+ //16bpp
+ tfRGB4, tfRGB5, tfR5G6B5, tfRGB5A1, tfRGBA4,
+ tfBGR4, tfBGR5, tfB5G6R5, tfBGR5A1, tfBGRA4,
+
+ //24bpp
+ tfBGR8, tfRGB8,
+
+ //32bpp
+ tfRGB10, tfRGB10A2, tfRGBA8,
+ tfBGR10, tfBGR10A2, tfBGRA8]) then
+ result := result + [ftBMP];
+
+ if (aFormat in [
+ //8 bpp
+ tfLuminance8, tfAlpha8,
+
+ //16 bpp
+ tfLuminance16, tfLuminance8Alpha8,
+ tfRGB5, tfRGB5A1, tfRGBA4,
+ tfBGR5, tfBGR5A1, tfBGRA4,
+
+ //24 bpp
+ tfRGB8, tfBGR8,
+
+ //32 bpp
+ tfRGB10A2, tfRGBA8, tfBGR10A2, tfBGRA8]) then
+ result := result + [ftTGA];
+
//TODO Supported File Formats!
- result := [ftDDS, ftTGA, ftBMP];
+
(*
{$IFDEF GLB_SUPPORT_PNG_WRITE}
if aFormat in [
fFormat := tfEmpty;
fWithAlpha := tfEmpty;
fWithoutAlpha := tfEmpty;
+ fRGBInverted := tfEmpty;
fPixelSize := 0.0;
fglFormat := 0;
fFormat := tfRGB4;
fWithAlpha := tfRGBA4;
fWithoutAlpha := tfRGB4;
+ fRGBInverted := tfBGR4;
fRange.r := $F;
fRange.g := $F;
fRange.b := $F;
fFormat := tfR5G6B5;
fWithAlpha := tfRGBA4;
fWithoutAlpha := tfR5G6B5;
+ fRGBInverted := tfB5G6R5;
fRange.r := $1F;
fRange.g := $3F;
fRange.b := $1F;
fFormat := tfRGB5;
fWithAlpha := tfRGB5A1;
fWithoutAlpha := tfRGB5;
+ fRGBInverted := tfBGR5;
fRange.r := $1F;
fRange.g := $1F;
fRange.b := $1F;
fFormat := tfRGB8;
fWithAlpha := tfRGBA8;
fWithoutAlpha := tfRGB8;
+ fRGBInverted := tfBGR8;
fglInternalFormat := GL_RGB8;
end;
fFormat := tfRGB10;
fWithAlpha := tfRGB10A2;
fWithoutAlpha := tfRGB10;
+ fRGBInverted := tfBGR10;
fRange.r := $3FF;
fRange.g := $3FF;
fRange.b := $3FF;
fFormat := tfRGB12;
fWithAlpha := tfRGBA12;
fWithoutAlpha := tfRGB12;
+ fRGBInverted := tfBGR12;
fglInternalFormat := GL_RGB12;
end;
fFormat := tfRGB16;
fWithAlpha := tfRGBA16;
fWithoutAlpha := tfRGB16;
+ fRGBInverted := tfBGR16;
fglInternalFormat := GL_RGB16;
end;
fFormat := tfRGBA2;
fWithAlpha := tfRGBA2;
fWithoutAlpha := tfR3G3B2;
+ fRGBInverted := tfBGRA2;
fglInternalFormat := GL_RGBA2;
end;
fFormat := tfRGBA4;
fWithAlpha := tfRGBA4;
fWithoutAlpha := tfRGB4;
+ fRGBInverted := tfBGRA4;
fRange.r := $F;
fRange.g := $F;
fRange.b := $F;
fFormat := tfRGB5A1;
fWithAlpha := tfRGB5A1;
fWithoutAlpha := tfRGB5;
+ fRGBInverted := tfBGR5A1;
fRange.r := $1F;
fRange.g := $1F;
fRange.b := $1F;
fFormat := tfRGBA8;
fWithAlpha := tfRGBA8;
fWithoutAlpha := tfRGB8;
+ fRGBInverted := tfBGRA8;
fglInternalFormat := GL_RGBA8;
end;
fFormat := tfRGB10A2;
fWithAlpha := tfRGB10A2;
fWithoutAlpha := tfRGB10;
+ fRGBInverted := tfBGR10A2;
fRange.r := $3FF;
fRange.g := $3FF;
fRange.b := $3FF;
fFormat := tfRGBA12;
fWithAlpha := tfRGBA12;
fWithoutAlpha := tfRGB12;
+ fRGBInverted := tfBGRA12;
fglInternalFormat := GL_RGBA12;
end;
fFormat := tfRGBA16;
fWithAlpha := tfRGBA16;
fWithoutAlpha := tfRGB16;
+ fRGBInverted := tfBGRA16;
fglInternalFormat := GL_RGBA16;
end;
fFormat := tfBGR4;
fWithAlpha := tfBGRA4;
fWithoutAlpha := tfBGR4;
+ fRGBInverted := tfRGB4;
fRange.r := $F;
fRange.g := $F;
fRange.b := $F;
fFormat := tfB5G6R5;
fWithAlpha := tfBGRA4;
fWithoutAlpha := tfB5G6R5;
+ fRGBInverted := tfR5G6B5;
fRange.r := $1F;
fRange.g := $3F;
fRange.b := $1F;
fglDataFormat := GL_UNSIGNED_SHORT_5_6_5;
end;
-//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
constructor TfdBGR5.Create;
begin
inherited Create;
fFormat := tfBGR5;
fWithAlpha := tfBGR5A1;
fWithoutAlpha := tfBGR5;
+ fRGBInverted := tfRGB5;
fRange.r := $1F;
fRange.g := $1F;
fRange.b := $1F;
fFormat := tfBGR8;
fWithAlpha := tfBGRA8;
fWithoutAlpha := tfBGR8;
+ fRGBInverted := tfRGB8;
fglInternalFormat := GL_RGB8;
end;
fFormat := tfBGR10;
fWithAlpha := tfBGR10A2;
fWithoutAlpha := tfBGR10;
+ fRGBInverted := tfRGB10;
fRange.r := $3FF;
fRange.g := $3FF;
fRange.b := $3FF;
fFormat := tfBGR12;
fWithAlpha := tfBGRA12;
fWithoutAlpha := tfBGR12;
+ fRGBInverted := tfRGB12;
fglInternalFormat := GL_RGB12;
end;
fFormat := tfBGR16;
fWithAlpha := tfBGRA16;
fWithoutAlpha := tfBGR16;
+ fRGBInverted := tfRGB16;
fglInternalFormat := GL_RGB16;
end;
fFormat := tfBGRA2;
fWithAlpha := tfBGRA4;
fWithoutAlpha := tfBGR4;
+ fRGBInverted := tfRGBA2;
fglInternalFormat := GL_RGBA2;
end;
fFormat := tfBGRA4;
fWithAlpha := tfBGRA4;
fWithoutAlpha := tfBGR4;
+ fRGBInverted := tfRGBA4;
fRange.r := $F;
fRange.g := $F;
fRange.b := $F;
fFormat := tfBGR5A1;
fWithAlpha := tfBGR5A1;
fWithoutAlpha := tfBGR5;
+ fRGBInverted := tfRGB5A1;
fRange.r := $1F;
fRange.g := $1F;
fRange.b := $1F;
fFormat := tfBGRA8;
fWithAlpha := tfBGRA8;
fWithoutAlpha := tfBGR8;
+ fRGBInverted := tfRGBA8;
fglInternalFormat := GL_RGBA8;
end;
fFormat := tfBGR10A2;
fWithAlpha := tfBGR10A2;
fWithoutAlpha := tfBGR10;
+ fRGBInverted := tfRGB10A2;
fRange.r := $3FF;
fRange.g := $3FF;
fRange.b := $3FF;
fFormat := tfBGRA12;
fWithAlpha := tfBGRA12;
fWithoutAlpha := tfBGR12;
+ fRGBInverted := tfRGBA12;
fglInternalFormat := GL_RGBA12;
end;
fFormat := tfBGRA16;
fWithAlpha := tfBGRA16;
fWithoutAlpha := tfBGR16;
+ fRGBInverted := tfRGBA16;
fglInternalFormat := GL_RGBA16;
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//TBitfieldFormat/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.SetRedMask(const aValue: UInt64);
+procedure TbmpBitfieldFormat.SetRedMask(const aValue: UInt64);
begin
Update(aValue, fRange.r, fShift.r);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.SetGreenMask(const aValue: UInt64);
+procedure TbmpBitfieldFormat.SetGreenMask(const aValue: UInt64);
begin
Update(aValue, fRange.g, fShift.g);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.SetBlueMask(const aValue: UInt64);
+procedure TbmpBitfieldFormat.SetBlueMask(const aValue: UInt64);
begin
Update(aValue, fRange.b, fShift.b);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.SetAlphaMask(const aValue: UInt64);
+procedure TbmpBitfieldFormat.SetAlphaMask(const aValue: UInt64);
begin
Update(aValue, fRange.a, fShift.a);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.Update(aMask: UInt64; out aRange: Cardinal; out
+procedure TbmpBitfieldFormat.Update(aMask: UInt64; out aRange: Cardinal; out
aShift: Byte);
begin
aShift := 0;
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.Map(const aPixel: TglBitmapPixelData; var aData: PByte; var aMapData: Pointer);
+procedure TbmpBitfieldFormat.Map(const aPixel: TglBitmapPixelData; var aData: PByte; var aMapData: Pointer);
var
data: UInt64;
s: Integer;
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TBitfieldFormat.Unmap(var aData: PByte; var aPixel: TglBitmapPixelData; var aMapData: Pointer);
+procedure TbmpBitfieldFormat.Unmap(var aData: PByte; var aPixel: TglBitmapPixelData; var aMapData: Pointer);
var
data: UInt64;
s, i: Integer;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//TColorTableFormat///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-procedure TColorTableFormat.Map(const aPixel: TglBitmapPixelData; var aData: PByte; var aMapData: Pointer);
+procedure TbmpColorTableFormat.CreateColorTable;
+var
+ bits: Byte;
+ len: Integer;
+ i: Integer;
+begin
+ if not (Format in [tfLuminance4, tfLuminance8, tfR3G3B2]) then
+ raise EglBitmapException.Create(UNSUPPORTED_FORMAT);
+
+ if (Format = tfLuminance4) then
+ SetLength(fColorTable, 16)
+ else
+ SetLength(fColorTable, 256);
+
+ case Format of
+ tfLuminance4: begin
+ for i := 0 to High(fColorTable) do begin
+ fColorTable[i].r := 16 * i;
+ fColorTable[i].g := 16 * i;
+ fColorTable[i].b := 16 * i;
+ fColorTable[i].a := 0;
+ end;
+ end;
+
+ tfLuminance8: begin
+ for i := 0 to High(fColorTable) do begin
+ fColorTable[i].r := i;
+ fColorTable[i].g := i;
+ fColorTable[i].b := i;
+ fColorTable[i].a := 0;
+ end;
+ end;
+
+ tfR3G3B2: begin
+ for i := 0 to High(fColorTable) do begin
+ fColorTable[i].r := Round(((i shr Shift.r) and Range.r) / Range.r * 255);
+ fColorTable[i].g := Round(((i shr Shift.g) and Range.g) / Range.g * 255);
+ fColorTable[i].b := Round(((i shr Shift.b) and Range.b) / Range.b * 255);
+ fColorTable[i].a := 0;
+ end;
+ end;
+ end;
+end;
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+procedure TbmpColorTableFormat.Map(const aPixel: TglBitmapPixelData; var aData: PByte; var aMapData: Pointer);
+var
+ d: Byte;
begin
- raise EglBitmapException.Create('mapping of color table formats is not supported');
+ if not (Format in [tfLuminance4, tfLuminance8, tfR3G3B2]) then
+ raise EglBitmapException.Create(UNSUPPORTED_FORMAT);
+
+ case Format of
+ tfLuminance4: begin
+ if (aMapData = nil) then
+ aData^ := 0;
+ d := LuminanceWeight(aPixel) and Range.r;
+ aData^ := aData^ or (d shl (4 - PtrInt(aMapData)));
+ inc(aMapData, 4);
+ if (PtrInt(aMapData) >= 8) then begin
+ inc(aData);
+ aMapData := nil;
+ end;
+ end;
+
+ tfLuminance8: begin
+ aData^ := LuminanceWeight(aPixel) and Range.r;
+ inc(aData);
+ end;
+
+ tfR3G3B2: begin
+ aData^ := Round(
+ ((aPixel.Data.r and Range.r) shl Shift.r) or
+ ((aPixel.Data.g and Range.g) shl Shift.g) or
+ ((aPixel.Data.b and Range.b) shl Shift.b));
+ inc(aData);
+ end;
+ end;
end;
-procedure TColorTableFormat.Unmap(var aData: PByte; var aPixel: TglBitmapPixelData; var aMapData: Pointer);
+procedure TbmpColorTableFormat.Unmap(var aData: PByte; var aPixel: TglBitmapPixelData; var aMapData: Pointer);
type
PUInt64 = ^UInt64;
var
inc(aData, s);
end;
-destructor TColorTableFormat.Destroy;
+destructor TbmpColorTableFormat.Destroy;
begin
SetLength(fColorTable, 0);
inherited Destroy;
var
fs: TFileStream;
begin
+ if not FileExists(aFilename) then
+ raise EglBitmapException.Create('file does not exist: ' + aFilename);
fFilename := aFilename;
fs := TFileStream.Create(fFilename, fmOpenRead);
try
biClrImportant: Cardinal;
end;
- (* TODO: delete?
- TBMPInfoOS = packed record
- biSize: Cardinal;
- biWidth: Longint;
- biHeight: Longint;
- biPlanes: Word;
- biBitCount: Word;
- end;
- *)
-
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function TglBitmap.LoadBMP(const aStream: TStream): Boolean;
end;
end;
- function ReadColorTable(var aFormat: TglBitmapFormat; const aInfo: TBMPInfo): TColorTableFormat;
+ function ReadColorTable(var aFormat: TglBitmapFormat; const aInfo: TBMPInfo): TbmpColorTableFormat;
var
i, c: Integer;
- ColorTable: TColorTable;
+ ColorTable: TbmpColorTable;
begin
result := nil;
if (aInfo.biBitCount >= 16) then
c := 1 shl aInfo.biBitCount;
SetLength(ColorTable, c);
for i := 0 to c-1 do begin
- aStream.Read(ColorTable[i], SizeOf(TColorTableEnty));
+ aStream.Read(ColorTable[i], SizeOf(TbmpColorTableEnty));
if (ColorTable[i].r <> ColorTable[i].g) or (ColorTable[i].g <> ColorTable[i].b) then
aFormat := tfRGB8;
end;
- result := TColorTableFormat.Create;
+ result := TbmpColorTableFormat.Create;
result.PixelSize := aInfo.biBitCount / 8;
result.ColorTable := ColorTable;
- result.Range := glBitmapColorRec($FF, $FF, $FF, $00);
+ result.Range := glBitmapColorRec($FF, $FF, $FF, $00);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////
function CheckBitfields(var aFormat: TglBitmapFormat; const aMask: TglBitmapColorRec;
- const aInfo: TBMPInfo): TBitfieldFormat;
+ const aInfo: TBMPInfo): TbmpBitfieldFormat;
var
TmpFormat: TglBitmapFormat;
FormatDesc: TFormatDescriptor;
if (aMask.a <> 0) and not TFormatDescriptor.Get(aFormat).HasAlpha then
aFormat := TFormatDescriptor.Get(aFormat).WithAlpha;
- result := TBitfieldFormat.Create;
+ result := TbmpBitfieldFormat.Create;
result.PixelSize := aInfo.biBitCount / 8;
result.RedMask := aMask.r;
result.GreenMask := aMask.g;
LineBuf, ImageData, TmpData: PByte;
SourceMD, DestMD: Pointer;
BmpFormat: TglBitmapFormat;
- ColorTable: TColorTable;
+ ColorTable: TbmpColorTable;
//records
Mask: TglBitmapColorRec;
var
Header: TBMPHeader;
Info: TBMPInfo;
- pData, pTemp: pByte;
+ Converter: TbmpColorTableFormat;
+ FormatDesc: TFormatDescriptor;
+ SourceFD, DestFD: Pointer;
+ pData, srcData, dstData, ConvertBuffer: pByte;
+ Pixel: TglBitmapPixelData;
PixelFormat: TglBitmapPixelData;
- FormatDesc: TFormatDescriptor;
- ImageSize, LineSize, Padding, LineIdx, ColorIdx: Integer;
- Temp, RedMask, GreenMask, BlueMask, AlphaMask: Cardinal;
+ ImageSize, wbLineSize, rbLineSize, Padding, LineIdx, PixelIdx, i: Integer;
+ RedMask, GreenMask, BlueMask, AlphaMask: Cardinal;
PaddingBuff: Cardinal;
if not (ftBMP in FormatGetSupportedFiles(Format)) then
raise EglBitmapUnsupportedFormatFormat.Create('SaveBMP - ' + UNSUPPORTED_FORMAT);
- ImageSize := TFormatDescriptor.Get(Format).GetSize(Dimension);
+ Converter := nil;
+ FormatDesc := TFormatDescriptor.Get(Format);
+ ImageSize := FormatDesc.GetSize(Dimension);
+ FillChar(Header, SizeOf(Header), 0);
Header.bfType := BMP_MAGIC;
Header.bfSize := SizeOf(Header) + SizeOf(Info) + ImageSize;
Header.bfReserved1 := 0;
Info.biPlanes := 1;
Info.biCompression := BMP_COMP_RGB;
Info.biSizeImage := ImageSize;
- case Format of
- tfR3G3B2, tfLuminance8: begin
- Info.biBitCount := 8;
- Header.bfOffBits := Header.bfOffBits + 256 * SizeOf(Cardinal);
- end;
-
- tfRGB5, tfRGB5A1, tfR5G6B5, tfRGB4, tfRGBA4,
- tfBGR5, tfBGR5A1, tfB5G6R5, tfBGR4, tfBGRA4: begin
- Info.biBitCount := 16;
- Info.biCompression := BMP_COMP_BITFIELDS;
- end;
- tfBGR8, tfRGB8: begin
- Info.biBitCount := 24;
- end;
+ try
+ case Format of
+ tfLuminance4: begin
+ Info.biBitCount := 4;
+ Header.bfSize := Header.bfSize + 16 * SizeOf(Cardinal);
+ Header.bfOffBits := Header.bfOffBits + 16 * SizeOf(Cardinal); //16 ColorTable entries
+ Converter := TbmpColorTableFormat.Create;
+ Converter.PixelSize := 0.5;
+ Converter.Format := Format;
+ Converter.Range := glBitmapColorRec($F, $F, $F, $0);
+ Converter.CreateColorTable;
+ end;
- tfRGB10, tfRGB10A2, tfRGBA8,
- tfBGR10, tfBGR10A2, tfBGRA8: begin
- Info.biBitCount := 32;
- Info.biCompression := BMP_COMP_BITFIELDS;
- end;
- else
- raise EglBitmapUnsupportedFormatFormat.Create('SaveBMP - ' + UNSUPPORTED_FORMAT);
- end;
- Info.biXPelsPerMeter := 2835;
- Info.biYPelsPerMeter := 2835;
+ tfR3G3B2, tfLuminance8: begin
+ Info.biBitCount := 8;
+ Header.bfSize := Header.bfSize + 256 * SizeOf(Cardinal);
+ Header.bfOffBits := Header.bfOffBits + 256 * SizeOf(Cardinal); //256 ColorTable entries
+ Converter := TbmpColorTableFormat.Create;
+ Converter.PixelSize := 1;
+ Converter.Format := Format;
+ if (Format = tfR3G3B2) then begin
+ Converter.Range := glBitmapColorRec($7, $7, $3, $0);
+ Converter.Shift := glBitmapShiftRec(0, 3, 6, 0);
+ end else
+ Converter.Range := glBitmapColorRec($FF, $FF, $FF, $0);
+ Converter.CreateColorTable;
+ end;
- // 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);
+ tfRGB4, tfRGB5, tfR5G6B5, tfRGB5A1, tfRGBA4,
+ tfBGR4, tfBGR5, tfB5G6R5, tfBGR5A1, tfBGRA4: begin
+ Info.biBitCount := 16;
+ Info.biCompression := BMP_COMP_BITFIELDS;
+ end;
- FormatDesc := TFormatDescriptor.Get(Format);
- RedMask := FormatDesc.RedMask;
- GreenMask := FormatDesc.GreenMask;
- BlueMask := FormatDesc.BlueMask;
- AlphaMask := FormatDesc.AlphaMask;
- end;
+ tfBGR8, tfRGB8: begin
+ Info.biBitCount := 24;
+ end;
- // headers
- aStream.Write(Header, SizeOf(Header));
- aStream.Write(Info, SizeOf(Info));
-
- // colortable
- if Info.biBitCount = 8 then begin
- Temp := 0;
- for ColorIdx := Low(Byte) to High(Byte) do begin
- aStream.Write(Temp, 4);
- Temp := Temp + $00010101;
+ tfRGB10, tfRGB10A2, tfRGBA8,
+ tfBGR10, tfBGR10A2, tfBGRA8: begin
+ Info.biBitCount := 32;
+ Info.biCompression := BMP_COMP_BITFIELDS;
+ end;
+ else
+ raise EglBitmapUnsupportedFormatFormat.Create('SaveBMP - ' + UNSUPPORTED_FORMAT);
+ end;
+ Info.biXPelsPerMeter := 2835;
+ Info.biYPelsPerMeter := 2835;
+
+ // prepare bitmasks
+ if Info.biCompression = BMP_COMP_BITFIELDS then begin
+ Header.bfSize := Header.bfSize + 4 * SizeOf(Cardinal);
+ Header.bfOffBits := Header.bfOffBits + 4 * SizeOf(Cardinal);
+
+ RedMask := FormatDesc.RedMask;
+ GreenMask := FormatDesc.GreenMask;
+ BlueMask := FormatDesc.BlueMask;
+ AlphaMask := FormatDesc.AlphaMask;
end;
- end;
-
- // bitmasks
- if Info.biCompression = BMP_COMP_BITFIELDS then begin
- aStream.Write(RedMask, SizeOf(Cardinal));
- aStream.Write(GreenMask, SizeOf(Cardinal));
- aStream.Write(BlueMask, SizeOf(Cardinal));
- aStream.Write(AlphaMask, SizeOf(Cardinal));
- end;
-
- // image data
- LineSize := Trunc(Width * TFormatDescriptor.Get(Format).PixelSize);
- Padding := GetLineWidth - LineSize;
- PaddingBuff := 0;
- pData := Data;
- Inc(pData, (Height -1) * LineSize);
+ // headers
+ aStream.Write(Header, SizeOf(Header));
+ aStream.Write(Info, SizeOf(Info));
+
+ // colortable
+ if Assigned(Converter) then
+ aStream.Write(Converter.ColorTable[0].b,
+ SizeOf(TbmpColorTableEnty) * Length(Converter.ColorTable));
+
+ // bitmasks
+ if Info.biCompression = BMP_COMP_BITFIELDS then begin
+ aStream.Write(RedMask, SizeOf(Cardinal));
+ aStream.Write(GreenMask, SizeOf(Cardinal));
+ aStream.Write(BlueMask, SizeOf(Cardinal));
+ aStream.Write(AlphaMask, SizeOf(Cardinal));
+ end;
- // prepare row buffer. But only for RGB because RGBA supports color masks
- // so it's possible to change color within the image.
- if (Format = tfRGB8) then
- GetMem(pTemp, fRowSize)
- else
- pTemp := nil;
+ // image data
+ rbLineSize := Round(Info.biWidth * FormatDesc.PixelSize);
+ wbLineSize := Round(Info.biWidth * Info.biBitCount / 8);
+ Padding := GetLineWidth - wbLineSize;
+ PaddingBuff := 0;
+
+ pData := Data;
+ inc(pData, (Height-1) * rbLineSize);
+
+ // prepare row buffer. But only for RGB because RGBA supports color masks
+ // so it's possible to change color within the image.
+ if Assigned(Converter) then begin
+ FormatDesc.PreparePixel(Pixel);
+ GetMem(ConvertBuffer, wbLineSize);
+ SourceFD := FormatDesc.CreateMappingData;
+ DestFD := Converter.CreateMappingData;
+ end else
+ ConvertBuffer := nil;
- try
- // write image data
- for LineIdx := 0 to Height - 1 do begin
- // preparing row
- if Format = tfRGB8 then begin
- Move(pData^, pTemp^, fRowSize);
- SwapRGB(pTemp, Width, false);
- end else
- pTemp := pData;
- aStream.Write(pTemp^, LineSize);
- Dec(pData, LineSize);
- if Padding > 0 then
- aStream.Write(PaddingBuff, Padding);
+ try
+ for LineIdx := 0 to Height - 1 do begin
+ // preparing row
+ if Assigned(Converter) then begin
+ srcData := pData;
+ dstData := ConvertBuffer;
+ for PixelIdx := 0 to Info.biWidth-1 do begin
+ FormatDesc.Unmap(srcData, Pixel, SourceFD);
+ with FormatDesc do begin
+ //TODO use convert function
+ for i := 0 to 3 do
+ if (Converter.Range.arr[i] <> Range.arr[i]) then begin
+ if (Range.arr[i] > 0) then
+ Pixel.Data.arr[i] := Round(Pixel.Data.arr[i] / Range.arr[i] * Converter.Range.arr[i])
+ else
+ Pixel.Data.arr[i] := 0;
+ end;
+ end;
+ Converter.Map(Pixel, dstData, DestFD);
+ end;
+ aStream.Write(ConvertBuffer^, wbLineSize);
+ end else begin
+ aStream.Write(pData^, rbLineSize);
+ end;
+ dec(pData, rbLineSize);
+ if (Padding > 0) then
+ aStream.Write(PaddingBuff, Padding);
+ end;
+ finally
+ // destroy row buffer
+ if Assigned(ConvertBuffer) then begin
+ FormatDesc.FreeMappingData(SourceFD);
+ Converter.FreeMappingData(DestFD);
+ FreeMem(ConvertBuffer);
+ end;
end;
finally
- // destroy row buffer
- if Format = tfRGB8 then
- FreeMem(pTemp);
+ if Assigned(Converter) then
+ Converter.Free;
end;
end;
ImageID: Byte;
ColorMapType: Byte;
ImageType: Byte;
- ColorMapSpec: Array[0..4] of Byte;
+ //ColorMapSpec: Array[0..4] of Byte;
+ ColorMapStart: Word;
+ ColorMapLength: Word;
+ ColorMapEntrySize: Byte;
OrigX: Word;
OrigY: Word;
Width: Word;
Height: Word;
Bpp: Byte;
- ImageDes: Byte;
+ ImageDesc: Byte;
end;
const
- TGA_UNCOMPRESSED_RGB = 2;
- TGA_UNCOMPRESSED_GRAY = 3;
- TGA_COMPRESSED_RGB = 10;
- TGA_COMPRESSED_GRAY = 11;
+ TGA_UNCOMPRESSED_COLOR_TABLE = 1;
+ TGA_UNCOMPRESSED_RGB = 2;
+ TGA_UNCOMPRESSED_GRAY = 3;
+ TGA_COMPRESSED_COLOR_TABLE = 9;
+ TGA_COMPRESSED_RGB = 10;
+ TGA_COMPRESSED_GRAY = 11;
+
+ TGA_NONE_COLOR_TABLE = 0;
+ TGA_COLOR_TABLE = 1;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function TglBitmap.LoadTGA(const aStream: TStream): Boolean;
var
Header: TTGAHeader;
- NewImage, pData: PByte;
- StreamPos: Int64;
- PixelSize, LineSize, YStart, YEnd, YInc: Integer;
- Format: TglBitmapFormat;
+ ImageData: PByte;
+ StartPosition: Int64;
+ PixelSize, LineSize: Integer;
+ tgaFormat: TglBitmapFormat;
+ FormatDesc: TFormatDescriptor;
+ Counter: packed record
+ X, Y: packed record
+ low, high, dir: Integer;
+ end;
+ end;
const
CACHE_SIZE = $4000;
////////////////////////////////////////////////////////////////////////////////////////
procedure ReadUncompressed;
var
- RowSize: Integer;
+ i, j: Integer;
+ buf, tmp1, tmp2: PByte;
begin
- RowSize := Header.Width * PixelSize;
- // copy line by line
- while YStart <> YEnd + YInc do begin
- pData := NewImage;
- Inc(pData, YStart * LineSize);
- aStream.Read(pData^, RowSize);
- Inc(YStart, YInc);
+ buf := nil;
+ if (Counter.X.dir < 0) then
+ buf := GetMem(LineSize);
+ try
+ while (Counter.Y.low <> Counter.Y.high + counter.Y.dir) do begin
+ tmp1 := ImageData + (Counter.Y.low * LineSize); //pointer to LineStart
+ if (Counter.X.dir < 0) then begin //flip X
+ aStream.Read(buf^, LineSize);
+ tmp2 := buf + LineSize - PixelSize; //pointer to last pixel in line
+ for i := 0 to Header.Width-1 do begin //for all pixels in line
+ for j := 0 to PixelSize-1 do begin //for all bytes in pixel
+ tmp1^ := tmp2^;
+ inc(tmp1);
+ inc(tmp2);
+ end;
+ dec(tmp2, 2*PixelSize); //move 2 backwards, because j-loop moved 1 forward
+ end;
+ end else
+ aStream.Read(tmp1^, LineSize);
+ inc(Counter.Y.low, Counter.Y.dir); //move to next line index
+ end;
+ finally
+ if Assigned(buf) then
+ FreeMem(buf);
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;
/////////////////////////////////////////////////////////////////
+ var
+ TmpData: PByte;
+ LinePixelsRead: Integer;
procedure CheckLine;
begin
- if LinePixelsRead >= HeaderWidth then begin
+ if (LinePixelsRead >= Header.Width) then begin
LinePixelsRead := 0;
- pData := NewImage;
- Inc(YStart, YInc);
- Inc(pData, YStart * LineSize);
+ inc(Counter.Y.low, Counter.Y.dir); //next line index
+ TmpData := ImageData + Counter.Y.low * LineSize; //set line
+ if (Counter.X.dir < 0) then //if x flipped then
+ TmpData := TmpData + LineSize - PixelSize; //set last pixel
end;
end;
/////////////////////////////////////////////////////////////////
+ var
+ Cache: PByte;
+ CacheSize, CachePos: Integer;
procedure CachedRead(out Buffer; Count: Integer);
var
BytesRead: Integer;
begin
- if (CachePos + Count) > CacheSize then begin
+ if (CachePos + Count > CacheSize) then begin
+ //if buffer overflow save non read bytes
BytesRead := 0;
-
- // Read Data
- if CacheSize - CachePos > 0 then begin
+ if (CacheSize - CachePos > 0) then begin
BytesRead := CacheSize - CachePos;
- Move(pByteArray(Cache)^[CachePos], Buffer, BytesRead);
- Inc(CachePos, BytesRead);
+ Move(PByteArray(Cache)^[CachePos], Buffer, BytesRead);
+ inc(CachePos, BytesRead);
end;
- // Reload Data
+ //load cache from file
CacheSize := Min(CACHE_SIZE, aStream.Size - aStream.Position);
aStream.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);
+ //read rest of requested bytes
+ 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);
+ //if no buffer overflow just read the data
+ Move(PByteArray(Cache)^[CachePos], Buffer, Count);
+ inc(CachePos, Count);
+ end;
+ end;
+
+ procedure PixelToBuffer(const aData: PByte; var aBuffer: PByte);
+ begin
+ case PixelSize of
+ 1: begin
+ aBuffer^ := aData^;
+ inc(aBuffer, Counter.X.dir);
+ end;
+ 2: begin
+ PWord(aBuffer)^ := PWord(aData)^;
+ inc(aBuffer, 2 * Counter.X.dir);
+ end;
+ 3: begin
+ PByteArray(aBuffer)^[0] := PByteArray(aData)^[0];
+ PByteArray(aBuffer)^[1] := PByteArray(aData)^[1];
+ PByteArray(aBuffer)^[2] := PByteArray(aData)^[2];
+ inc(aBuffer, 3 * Counter.X.dir);
+ end;
+ 4: begin
+ PCardinal(aBuffer)^ := PCardinal(aData)^;
+ inc(aBuffer, 4 * Counter.X.dir);
+ end;
end;
end;
+ var
+ TotalPixelsToRead, TotalPixelsRead: Integer;
+ Temp: Byte;
+ buf: array [0..3] of Byte; //1 pixel is max 32bit long
+ PixelRepeat: Boolean;
+ PixelsToRead, PixelCount: Integer;
begin
CacheSize := 0;
- CachePos := 0;
+ CachePos := 0;
- HeaderWidth := Header.Width;
- HeaderHeight := Header.Height;
+ TotalPixelsToRead := Header.Width * Header.Height;
+ TotalPixelsRead := 0;
+ LinePixelsRead := 0;
- GetMem(Cache, CACHE_SIZE); // 16K Buffer
+ GetMem(Cache, CACHE_SIZE);
try
- ImgPixelsToRead := HeaderWidth * HeaderHeight;
- ImgPixelsRead := 0;
- LinePixelsRead := 0;
+ TmpData := ImageData + Counter.Y.low * LineSize; //set line
+ if (Counter.X.dir < 0) then //if x flipped then
+ TmpData := TmpData + LineSize - PixelSize; //set last pixel
- pData := NewImage;
- Inc(pData, YStart * LineSize);
-
- // Read until all Pixels
repeat
+ //read CommandByte
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);
+ PixelRepeat := (Temp and $80) > 0;
+ PixelsToRead := (Temp and $7F) + 1;
+ inc(TotalPixelsRead, PixelsToRead);
+
+ if PixelRepeat then
+ CachedRead(buf[0], PixelSize);
+ while (PixelsToRead > 0) do begin
+ CheckLine;
+ PixelCount := Min(Header.Width - LinePixelsRead, PixelsToRead); //max read to EOL or EOF
+ while (PixelCount > 0) do begin
+ if not PixelRepeat then
+ CachedRead(buf[0], PixelSize);
+ PixelToBuffer(@buf[0], TmpData);
+ inc(LinePixelsRead);
+ dec(PixelsToRead);
+ dec(PixelCount);
end;
end;
- until ImgPixelsRead >= ImgPixelsToRead;
+ until (TotalPixelsRead >= TotalPixelsToRead);
finally
- FreeMem(Cache)
+ FreeMem(Cache);
end;
end;
+ function IsGrayFormat: Boolean;
+ begin
+ result := Header.ImageType in [TGA_UNCOMPRESSED_GRAY, TGA_COMPRESSED_GRAY];
+ end;
+
begin
result := false;
// reading header to test file and set cursor back to begin
- StreamPos := aStream.Position;
+ StartPosition := aStream.Position;
aStream.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
+ if (Header.ColorMapType = TGA_NONE_COLOR_TABLE) and (Header.ImageType in [
+ TGA_UNCOMPRESSED_RGB, TGA_UNCOMPRESSED_GRAY, TGA_COMPRESSED_RGB, TGA_COMPRESSED_GRAY]) then
+ begin
+ try
+ if Header.ImageID <> 0 then // skip image ID
+ aStream.Position := aStream.Position + Header.ImageID;
+
case Header.Bpp of
- //TODO 8: Format := tfAlpha8;
- 16: Format := tfLuminance8Alpha8;
- 24: Format := tfBGR8;
- 32: Format := tfBGRA8;
- else
- raise EglBitmapException.Create('LoadTga - unsupported BitsPerPixel found.');
+ 8: if IsGrayFormat then case (Header.ImageDesc and $F) of
+ 0: tgaFormat := tfLuminance8;
+ 8: tgaFormat := tfAlpha8;
+ end;
+
+ 16: if IsGrayFormat then case (Header.ImageDesc and $F) of
+ 0: tgaFormat := tfLuminance16;
+ 8: tgaFormat := tfLuminance8Alpha8;
+ end else case (Header.ImageDesc and $F) of
+ 0: tgaFormat := tfBGR5;
+ 1: tgaFormat := tfBGR5A1;
+ 4: tgaFormat := tfBGRA4;
+ end;
+
+ 24: if not IsGrayFormat then case (Header.ImageDesc and $F) of
+ 0: tgaFormat := tfBGR8;
+ end;
+
+ 32: if not IsGrayFormat then case (Header.ImageDesc and $F) of
+ 2: tgaFormat := tfBGR10A2;
+ 8: tgaFormat := tfBGRA8;
+ end;
end;
- // skip image ID
- if Header.ImageID <> 0 then
- aStream.Position := aStream.Position + Header.ImageID;
+ if (tgaFormat = tfEmpty) then
+ raise EglBitmapException.Create('LoadTga - unsupported format');
- PixelSize := TFormatDescriptor.Get(Format).GetSize(1, 1);
- LineSize := Trunc(Header.Width * PixelSize);
+ FormatDesc := TFormatDescriptor.Get(tgaFormat);
+ PixelSize := FormatDesc.GetSize(1, 1);
+ LineSize := FormatDesc.GetSize(Header.Width, 1);
- GetMem(NewImage, LineSize * Header.Height);
+ GetMem(ImageData, LineSize * Header.Height);
try
+ //column direction
+ if ((Header.ImageDesc and (1 shl 4)) > 0) then begin
+ Counter.X.low := Header.Height-1;;
+ Counter.X.high := 0;
+ Counter.X.dir := -1;
+ end else begin
+ Counter.X.low := 0;
+ Counter.X.high := Header.Height-1;
+ Counter.X.dir := 1;
+ end;
+
// Row direction
- if (Header.ImageDes and $20 > 0) then begin
- YStart := 0;
- YEnd := Header.Height -1;
- YInc := 1;
+ if ((Header.ImageDesc and (1 shl 5)) > 0) then begin
+ Counter.Y.low := 0;
+ Counter.Y.high := Header.Height-1;
+ Counter.Y.dir := 1;
end else begin
- YStart := Header.Height -1;
- YEnd := 0;
- YInc := -1;
+ Counter.Y.low := Header.Height-1;;
+ Counter.Y.high := 0;
+ Counter.Y.dir := -1;
end;
// Read Image
ReadCompressed;
end;
- SetDataPointer(NewImage, Format, Header.Width, Header.Height);
+ SetDataPointer(ImageData, tgaFormat, Header.Width, Header.Height);
result := true;
except
- FreeMem(NewImage);
+ FreeMem(ImageData);
raise;
end;
- end
- else aStream.Position := StreamPos;
+ finally
+ aStream.Position := StartPosition;
+ end;
end
- else aStream.Position := StreamPos;
+ else aStream.Position := StartPosition;
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
procedure TglBitmap.SaveTGA(const aStream: TStream);
var
Header: TTGAHeader;
- Size: Integer;
- pTemp: pByte;
+ LineSize, Size, x, y: Integer;
+ Pixel: TglBitmapPixelData;
+ LineBuf, SourceData, DestData: PByte;
+ SourceMD, DestMD: Pointer;
FormatDesc: TFormatDescriptor;
-
- procedure ConvertData(pTemp: pByte);
- var
- Idx, PixelSize: Integer;
- Temp: byte;
- begin
- PixelSize := fPixelSize;
- for Idx := 1 to Height * Width do begin
- Temp := pByteArray(pTemp)^[2];
- pByteArray(pTemp)^[2] := pByteArray(pTemp)^[0];
- pByteArray(pTemp)^[0] := Temp;
- Inc(pTemp, PixelSize);
- end;
- end;
-
+ Converter: TFormatDescriptor;
begin
if not (ftTGA in FormatGetSupportedFiles(Format)) then
raise EglBitmapUnsupportedFormatFormat.Create('SaveTGA - ' + UNSUPPORTED_FORMAT);
+ //prepare header
FillChar(Header, SizeOf(Header), 0);
- case Format of
- //TODO ifAlpha8, ifLuminance8, ifDepth8: begin
- tfLuminance8: begin
- Header.ImageType := TGA_UNCOMPRESSED_GRAY;
- Header.Bpp := 8;
- end;
- tfLuminance8Alpha8: begin
- Header.ImageType := TGA_UNCOMPRESSED_GRAY;
- Header.Bpp := 16;
- end;
- tfRGB8, tfBGR8: begin
- Header.ImageType := TGA_UNCOMPRESSED_RGB;
- Header.Bpp := 24;
- end;
- tfRGBA8, tfBGRA8: begin
- Header.ImageType := TGA_UNCOMPRESSED_RGB;
- Header.Bpp := 32;
- end;
- else
- raise EglBitmapUnsupportedFormatFormat.Create('SaveTGA - ' + UNSUPPORTED_FORMAT);
- end;
- Header.Width := Width;
- Header.Height := Height;
- Header.ImageDes := $20;
- FormatDesc := TFormatDescriptor.Get(Format);
+ //set ImageType
+ if (Format in [tfLuminance8, tfLuminance6Alpha2, tfLuminance4Alpha4, tfAlpha8,
+ tfLuminance16, tfLuminance12Alpha4, tfLuminance8Alpha8]) then
+ Header.ImageType := TGA_UNCOMPRESSED_GRAY
+ else
+ Header.ImageType := TGA_UNCOMPRESSED_RGB;
+
+ //set BitsPerPixel
+ if (Format in [tfLuminance8, tfLuminance6Alpha2, tfLuminance4Alpha4, tfAlpha8]) then
+ Header.Bpp := 8
+ else if (Format in [tfLuminance16, tfLuminance12Alpha4, tfLuminance8Alpha8,
+ tfRGB5, tfBGR5, tfRGB5A1, tfBGR5A1, tfRGBA4, tfBGRA4]) then
+ Header.Bpp := 16
+ else if (Format in [tfBGR8, tfRGB8]) then
+ Header.Bpp := 24
+ else
+ Header.Bpp := 32;
- if FormatDesc.HasAlpha then
- Header.ImageDes := Header.ImageDes or $08;
+ //set AlphaBitCount
+ case Format of
+ tfRGB5A1, tfBGR5A1:
+ Header.ImageDesc := 1 and $F;
+ tfRGB10A2, tfBGR10A2:
+ Header.ImageDesc := 2 and $F;
+ tfRGBA4, tfBGRA4:
+ Header.ImageDesc := 4 and $F;
+ tfAlpha8, tfLuminance8Alpha8, tfRGBA8, tfBGRA8:
+ Header.ImageDesc := 8 and $F;
+ end;
+
+ Header.Width := Width;
+ Header.Height := Height;
+ Header.ImageDesc := Header.ImageDesc or $20; //flip y
aStream.Write(Header, SizeOf(Header));
// convert RGB(A) to BGR(A)
- Size := FormatDesc.GetSize(Dimension);
- if Format in [tfRGB8, tfRGBA8] then begin
- GetMem(pTemp, Size);
- end else
- pTemp := Data;
-
- try
- // convert data
- if Format in [tfRGB8, tfRGBA8] then begin
- Move(Data^, pTemp^, Size);
- ConvertData(pTemp);
+ Converter := nil;
+ FormatDesc := TFormatDescriptor.Get(Format);
+ Size := FormatDesc.GetSize(Dimension);
+ if Format in [tfRGB5, tfRGB5A1, tfRGBA4, tfRGB8, tfRGB10A2, tfRGBA8] then begin
+ if (FormatDesc.RGBInverted = tfEmpty) then
+ raise EglBitmapException.Create('inverted RGB format is empty');
+ Converter := TFormatDescriptor.Get(FormatDesc.RGBInverted);
+ if not glBitmapColorRecCmp(Converter.Range, FormatDesc.Range) or
+ (Converter.PixelSize <> FormatDesc.PixelSize) then
+ raise EglBitmapException.Create('invalid inverted RGB format');
+ end;
+
+ if Assigned(Converter) then begin
+ LineSize := FormatDesc.GetSize(Width, 1);
+ LineBuf := GetMem(LineSize);
+ SourceMD := FormatDesc.CreateMappingData;
+ DestMD := Converter.CreateMappingData;
+ try
+ SourceData := Data;
+ for y := 0 to Height-1 do begin
+ DestData := LineBuf;
+ for x := 0 to Width-1 do begin
+ FormatDesc.Unmap(SourceData, Pixel, SourceMD);
+ Converter.Map(Pixel, DestData, DestMD);
+ end;
+ aStream.Write(LineBuf^, LineSize);
+ end;
+ finally
+ FreeMem(LineBuf);
+ FormatDesc.FreeMappingData(SourceMD);
+ FormatDesc.FreeMappingData(DestMD);
end;
-
- // write data
- aStream.Write(pTemp^, Size);
- finally
- // free tempdata
- if Format in [tfRGB8, tfRGBA8] then
- FreeMem(pTemp);
- end;
+ end else
+ aStream.Write(Data^, Size);
end;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
TFormatDescriptor.Finalize;
end.
+
projects / LazOpenGLCore.git / blobdiff