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;
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+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;
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function FormatGetSupportedFiles(const aFormat: TglBitmapFormat): TglBitmapFileTypes;
begin
- result := [ftDDS, ftTGA];
+ result := [ftDDS];
if (aFormat in [
//4 bbp
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!
(*
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;
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;
-
- s := SysUtils.Format('%.2X%.2X%.2X' + sLineBreak, [fColorTable[i].r, fColorTable[i].g, fColorTable[i].b]);
- fs.Write(s[1], Length(s));
end;
end;
end;
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
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;
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
projects / glBitmap.git / commitdiff