X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fengine%2Fe_textures.pas;h=19efb4b1659cd844b340281ee9ec243f6fceb5c2;hb=8f815647c61a98e32b85066bf245b262694ac634;hp=1c470fa6b3fe997e483e451bbaa4b9a19ab42c1e;hpb=ff104a8cdc79693b7546d839605ec73ae135d904;p=d2df-sdl.git diff --git a/src/engine/e_textures.pas b/src/engine/e_textures.pas index 1c470fa..19efb4b 100644 --- a/src/engine/e_textures.pas +++ b/src/engine/e_textures.pas @@ -1,3 +1,4 @@ +{$MODE DELPHI} unit e_textures; { This unit provides interface to load 24-bit and 32-bit uncompressed images @@ -9,29 +10,47 @@ interface uses GL, GLExt, SysUtils, e_log; +type + GLTexture = record + id: GLuint; + width, height: Word; // real + glwidth, glheight: Word; // powerof2 + u, v: Single; // usually 1.0 + end; + var - fUseMipmaps: Boolean = False; + e_DummyTextures: Boolean = False; TEXTUREFILTER: Integer = GL_NEAREST; -function CreateTexture( Width, Height, Format: Word; pData: Pointer ): Integer; +function CreateTexture (var tex: GLTexture; Width, Height, aFormat: Word; pData: Pointer): Boolean; // Standard set of images loading functions -function LoadTexture( Filename: String; var Texture: GLuint; - var pWidth, pHeight: Word; Fmt: PWord = nil ): Boolean; +function LoadTexture (Filename: String; var Texture: GLTexture; var pWidth, pHeight: Word; Fmt: PWord=nil): Boolean; +function LoadTextureEx (Filename: String; var Texture: GLTexture; fX, fY, fWidth, fHeight: Word; Fmt: PWord=nil): Boolean; +function LoadTextureMem (pData: Pointer; dataSize: LongInt; var Texture: GLTexture; var pWidth, pHeight: Word; Fmt: PWord=nil): Boolean; +function LoadTextureMemEx (pData: Pointer; dataSize: LongInt; var Texture: GLTexture; fX, fY, fWidth, fHeight: Word; Fmt: PWord=nil): Boolean; -function LoadTextureEx( Filename: String; var Texture: GLuint; - fX, fY, fWidth, fHeight: Word; Fmt: PWord = nil ): Boolean; +implementation -function LoadTextureMem( pData: Pointer; var Texture: GLuint; - var pWidth, pHeight: Word; Fmt: PWord = nil ): Boolean; +uses + Classes, BinEditor, g_options, utils, + ImagingTypes, Imaging, ImagingUtility; -function LoadTextureMemEx( pData: Pointer; var Texture: GLuint; - fX, fY, fWidth, fHeight: Word; Fmt: PWord = nil ): Boolean; -implementation +function AlignP2 (n: Word): Word; +begin + Dec(n); + n := n or (n shr 1); + n := n or (n shr 2); + n := n or (n shr 4); + n := n or (n shr 8); + n := n or (n shr 16); + Inc(n); + Result := n; +end; -uses BinEditor; +{ type TTGAHeader = packed record FileType: Byte; @@ -45,19 +64,51 @@ type BPP: Byte; ImageInfo: Byte; end; +} + // This is auxiliary function that creates OpenGL texture from raw image data -function CreateTexture( Width, Height, Format: Word; pData: Pointer ): Integer; +function CreateTexture (var tex: GLTexture; Width, Height, aFormat: Word; pData: Pointer): Boolean; var Texture: GLuint; begin - glGenTextures( 1, @Texture ); - glBindTexture( GL_TEXTURE_2D, Texture ); + tex.width := Width; + tex.height := Height; + if glLegacyNPOT then + begin + tex.glwidth := AlignP2(Width); + tex.glheight := AlignP2(Height); + end + else + begin + tex.glwidth := Width; + tex.glheight := Height; + end; + tex.u := 1; + tex.v := 1; + if tex.glwidth <> tex.width then tex.u := (tex.width+0.0)/(tex.glwidth+0.0); + if tex.glheight <> tex.height then tex.v := (tex.height+0.0)/(tex.glheight+0.0); + + if (tex.glwidth <> tex.width) or (tex.glheight <> tex.height) then + begin + e_WriteLog(Format('NPOT: orig is %ux%u; gl is %ux%u; u=%f; v=%f', [Width, Height, tex.glwidth, tex.glheight, tex.u, tex.v]), MSG_NOTIFY); + end; + + if e_DummyTextures then + begin + tex.id := GLuint(-1); + Result := True; + Exit; + end; + + glGenTextures(1, @Texture); + tex.id := Texture; + glBindTexture(GL_TEXTURE_2D, Texture); - {Texture blends with object background} - glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); - {Texture does NOT blend with object background} - // glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); + // texture blends with object background + glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + // texture does NOT blend with object background + //glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); { Select a filtering type. @@ -70,383 +121,230 @@ begin } // for GL_TEXTURE_MAG_FILTER only first two can be used - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, TEXTUREFILTER ); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, TEXTUREFILTER); // for GL_TEXTURE_MIN_FILTER all of the above can be used - glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, TEXTUREFILTER ); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, TEXTUREFILTER); - if Format = GL_RGBA then + // create empty texture + if aFormat = GL_RGBA then begin - glTexImage2D( GL_TEXTURE_2D, 0, 4, Width, Height, - 0, GL_RGBA, GL_UNSIGNED_BYTE, pData ); - end else + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex.glwidth, tex.glheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, nil); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, pData); + end + else begin - glTexImage2D( GL_TEXTURE_2D, 0, 3, Width, Height, - 0, GL_RGB, GL_UNSIGNED_BYTE, pData ); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tex.glwidth, tex.glheight, 0, GL_RGB, GL_UNSIGNED_BYTE, nil); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Width, Height, GL_RGB, GL_UNSIGNED_BYTE, pData); end; + // the following is ok too + //bindTexture(0); + //glTextureSubImage2D(tid, 0, 0, 0, img.width, img.height, GL_RGBA, GL_UNSIGNED_BYTE, img.imageData.bytes.ptr); + + { + if (tex.glwidth = tex.glwidth) and (tex.glheight = tex.height) then + // easy case + if aFormat = GL_RGBA then + begin + glTexImage2D(GL_TEXTURE_2D, 0, 4, Width, Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pData); + end + else + begin + glTexImage2D(GL_TEXTURE_2D, 0, 3, Width, Height, 0, GL_RGB, GL_UNSIGNED_BYTE, pData); + end; + end + } + glBindTexture(GL_TEXTURE_2D, 0); - Result := Texture; + Result := true; end; -function LoadTextureMem( pData: Pointer; var Texture: GLuint; - var pWidth, pHeight: Word; Fmt: PWord = nil ): Boolean; +function LoadTextureMem (pData: Pointer; dataSize: LongInt; var Texture: GLTexture; var pWidth, pHeight: Word; Fmt: PWord=nil): Boolean; var - TGAHeader: TTGAHeader; - image: Pointer; - Width, Height: Integer; - ImageSize: Integer; - i: Integer; - Front: ^Byte; - Back: ^Byte; - Temp: Byte; - BPP: Byte; - TFmt: Word; - + image, ii: PByte; + width, height: Integer; + imageSize: Integer; + img: TImageData; + x, y: Integer; + clr: TColor32Rec; begin - Result := False; + result := false; pWidth := 0; pHeight := 0; + if Fmt <> nil then Fmt^ := GL_RGBA; // anyway - CopyMemory( @TGAHeader, pData, SizeOf(TGAHeader) ); - - if ( TGAHeader.ImageType <> 2 ) then + InitImage(img); + if not LoadImageFromMemory(pData, dataSize, img) then begin - e_WriteLog( 'Error loading texture: Bad ImageType', MSG_WARNING ); - Exit; + e_WriteLog('Error loading texture: unknown image format', MSG_WARNING); + exit; end; - - if ( TGAHeader.ColorMapType <> 0 ) then - begin - e_WriteLog( 'Error loading texture: Bad ColorMapType', MSG_WARNING ); - Exit; - end; - - if ( TGAHeader.BPP < 24 ) then - begin - e_WriteLog( 'Error loading texture: BPP less than 24', MSG_WARNING ); - Exit; + try + if (img.width < 1) or (img.width > 32768) or (img.height < 1) or (img.height > 32768) then + begin + e_WriteLog('Error loading texture: invalid image dimensions', MSG_WARNING); + exit; + end; + //ConvertImage(img, ifA8R8G8B8); + width := img.width; + height := img.height; + pWidth := width; + pHeight := height; + imageSize := Width*Height*32; + GetMem(image, imageSize); + try + // it's slow, but i don't care for now + ii := image; + for y := height-1 downto 0 do + begin + for x := 0 to width-1 do + begin + clr := GetPixel32(img, x, y); + ii^ := clr.r; Inc(ii); + ii^ := clr.g; Inc(ii); + ii^ := clr.b; Inc(ii); + ii^ := clr.a; Inc(ii); + end; + end; + CreateTexture(Texture, width, height, GL_RGBA, image); + result := true; + finally + FreeMem(image); + end; + finally + FreeImage(img); end; - - Width := TGAHeader.Width[0] + TGAHeader.Width[1] * 256; - Height := TGAHeader.Height[0] + TGAHeader.Height[1] * 256; - BPP := TGAHeader.BPP; - - ImageSize := Width * Height * (BPP div 8); - - GetMem( Image, ImageSize ); - CopyMemory( Image, PByte(pData) + SizeOf(TGAHeader), ImageSize ); - - for i := 0 to Width * Height - 1 do - begin - Front := PByte(Image) + i*(BPP div 8); - Back := PByte(Image) + i*(BPP div 8) + 2; - Temp := Front^; - Front^ := Back^; - Back^ := Temp; - end; - - if ( BPP = 24 ) then - TFmt := GL_RGB - else - TFmt := GL_RGBA; - - Texture := CreateTexture( Width, Height, TFmt, Image ); - - FreeMem( Image ); - - if Fmt <> nil then Fmt^ := TFmt; - - pWidth := Width; - pHeight := Height; - - Result := True; end; -function LoadTextureMemEx( pData: Pointer; var Texture: GLuint; - fX, fY, fWidth, fHeight: Word; Fmt: PWord = nil ): Boolean; -var - TGAHeader: TTGAHeader; - image, image2: Pointer; - Width, Height: Integer; - ImageSize: Integer; - i, a, b: Integer; - Front: ^Byte; - Back: ^Byte; - Temp: Byte; - BPP: Byte; - Base: PByte; - TFmt: Word; +function LoadTextureMemEx (pData: Pointer; dataSize: LongInt; var Texture: GLTexture; fX, fY, fWidth, fHeight: Word; Fmt: PWord=nil): Boolean; +var + image, ii: PByte; + width, height: Integer; + imageSize: Integer; + img: TImageData; + x, y: Integer; + clr: TColor32Rec; begin - Result := False; - - CopyMemory( @TGAHeader, pData, SizeOf(TGAHeader) ); + result := false; + if Fmt <> nil then Fmt^ := GL_RGBA; // anyway - if ( TGAHeader.ImageType <> 2 ) then + InitImage(img); + if not LoadImageFromMemory(pData, dataSize, img) then begin - e_WriteLog( 'Error loading texture: Bad ImageType', MSG_WARNING ); - Exit; + e_WriteLog('Error loading texture: unknown image format', MSG_WARNING); + exit; end; - - if ( TGAHeader.ColorMapType <> 0 ) then - begin - e_WriteLog( 'Error loading texture: Bad ColorMapType', MSG_WARNING ); - Exit; + try + if (img.width < 1) or (img.width > 32768) or (img.height < 1) or (img.height > 32768) then + begin + e_WriteLog('Error loading texture: invalid image dimensions', MSG_WARNING); + exit; + end; + //ConvertImage(img, ifA8R8G8B8); + if fX > img.width then exit; + if fY > img.height then exit; + if fX+fWidth > img.width then exit; + if fY+fHeight > img.height then exit; + imageSize := img.width*img.height*32; + GetMem(image, imageSize); + try + // it's slow, but i don't care for now + ii := image; + for y := fY+fHeight-1 downto 0 do + begin + for x := fX to fX+fWidth-1 do + begin + clr := GetPixel32(img, x, y); + ii^ := clr.r; Inc(ii); + ii^ := clr.g; Inc(ii); + ii^ := clr.b; Inc(ii); + ii^ := clr.a; Inc(ii); + end; + end; + CreateTexture(Texture, fWidth, fHeight, GL_RGBA, image); + result := true; + finally + FreeMem(image); + end; + finally + FreeImage(img); end; - - if ( TGAHeader.BPP < 24 ) then - begin - e_WriteLog( 'Error loading texture: BPP less than 24', MSG_WARNING ); - Exit; - end; - - Width := TGAHeader.Width[0] + TGAHeader.Width[1] * 256; - Height := TGAHeader.Height[0] + TGAHeader.Height[1] * 256; - BPP := TGAHeader.BPP; - - if fX > Width then Exit; - if fY > Height then Exit; - if fX+fWidth > Width then Exit; - if fY+fHeight > Height then Exit; - - ImageSize := Width * Height * (BPP div 8); - GetMem( Image2, ImageSize ); - CopyMemory( Image2, PByte(pData) + SizeOf(TGAHeader), ImageSize ); - - a := BPP div 8; - - for i := 0 to Width * Height - 1 do - begin - Front := PByte(Image2) + i * a; - Back := PByte(Image2) + i * a + 2; - Temp := Front^; - Front^ := Back^; - Back^ := Temp; - end; - - fY := Height - (fY + fHeight); - - ImageSize := fHeight * fWidth * (BPP div 8); - GetMem( Image, ImageSize ); - - Base := PByte( Image2 ) + fY * Width * (BPP div 8) + fX * (BPP div 8); - a := fWidth * (BPP div 8); - b := Width * (BPP div 8); - - for i := 0 to fHeight-1 do - CopyMemory( PByte(image) + a*i, Base + b*i, a ); - - if ( BPP = 24 ) then - TFmt := GL_RGB - else - TFmt := GL_RGBA; - - Texture := CreateTexture( fWidth, fHeight, TFmt, Image ); - - FreeMem( Image ); - FreeMem( Image2 ); - - if Fmt <> nil then Fmt^ := TFmt; - - Result := True; end; -function LoadTexture( Filename: String; var Texture: GLuint; - var pWidth, pHeight: Word; Fmt: PWord = nil ): Boolean; -var - TGAHeader: TTGAHeader; - TGAFile: File; - bytesRead: Integer; - image: Pointer; - Width, Height: Integer; - ImageSize: Integer; - i: Integer; - Front: ^Byte; - Back: ^Byte; - Temp: Byte; - BPP: Byte; - TFmt: Word; +function LoadTexture (filename: AnsiString; var Texture: GLTexture; var pWidth, pHeight: Word; Fmt: PWord=nil): Boolean; +var + fs: TStream; + img: Pointer; + imageSize: LongInt; begin - Result := False; + result := False; pWidth := 0; pHeight := 0; + if Fmt <> nil then Fmt^ := GL_RGBA; // anyway + fs := nil; - if not FileExists(Filename) then - begin - e_WriteLog('Texture ' + Filename + ' not found', MSG_WARNING); - Exit; + try + fs := openDiskFileRO(filename); + except + fs := nil; end; - - AssignFile( TGAFile, Filename ); - Reset( TGAFile, 1 ); - BlockRead( TGAFile, TGAHeader, SizeOf(TGAHeader) ); - - if ( TGAHeader.ImageType <> 2 ) then + if fs = nil then begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: Bad ImageType', MSG_WARNING ); - Exit; + e_WriteLog('Texture "'+filename+'" not found', MSG_WARNING); + exit; end; - if ( TGAHeader.ColorMapType <> 0 ) then - begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: Bad ColorMapType', MSG_WARNING ); - Exit; + try + imageSize := fs.size; + GetMem(img, imageSize); + try + fs.readBuffer(img^, imageSize); + result := LoadTextureMem(img, imageSize, Texture, pWidth, pHeight, Fmt); + finally + FreeMem(img); + end; + finally + fs.Free(); end; - - if ( TGAHeader.BPP < 24 ) then - begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: BPP less than 24', MSG_WARNING ); - Exit; - end; - - Width := TGAHeader.Width[0] + TGAHeader.Width[1] * 256; - Height := TGAHeader.Height[0] + TGAHeader.Height[1] * 256; - BPP := TGAHeader.BPP; - - ImageSize := Width * Height * (BPP div 8); - - GetMem( Image, ImageSize ); - - BlockRead( TGAFile, image^, ImageSize, bytesRead ); - if ( bytesRead <> ImageSize ) then - begin - CloseFile( TGAFile ); - Exit; - end; - - CloseFile( TGAFile ); - - for i := 0 to Width * Height - 1 do - begin - Front := PByte(Image) + i * (BPP div 8); - Back := PByte(Image) + i * (BPP div 8) + 2; - Temp := Front^; - Front^ := Back^; - Back^ := Temp; - end; - - if ( BPP = 24 ) then - TFmt := GL_RGB - else - TFmt := GL_RGBA; - - Texture := CreateTexture( Width, Height, TFmt, Image ); - - FreeMem( Image ); - - if Fmt <> nil then Fmt^ := TFmt; - - pWidth := Width; - pHeight := Height; - - Result := True; end; -function LoadTextureEx( Filename: String; var Texture: GLuint; - fX, fY, fWidth, fHeight: Word; Fmt: PWord = nil ): Boolean; -var - TGAHeader: TTGAHeader; - TGAFile: File; - image, image2: Pointer; - Width, Height: Integer; - ImageSize: Integer; - i: Integer; - Front: ^Byte; - Back: ^Byte; - Temp: Byte; - BPP: Byte; - Base: PByte; - TFmt: Word; +function LoadTextureEx (filename: AnsiString; var Texture: GLTexture; fX, fY, fWidth, fHeight: Word; Fmt: PWord=nil): Boolean; +var + fs: TStream; + img: Pointer; + imageSize: LongInt; begin - Result := False; - - if not FileExists(Filename) then - begin - e_WriteLog( 'Texture ' + Filename + ' not found', MSG_WARNING ); - Exit; - end; - - AssignFile( TGAFile, Filename ); - Reset( TGAFile, 1 ); - BlockRead( TGAFile, TGAHeader, SizeOf(TGAHeader) ); - - if ( TGAHeader.ImageType <> 2 ) then - begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: Bad ImageType', MSG_WARNING ); - Exit; + result := False; + if Fmt <> nil then Fmt^ := GL_RGBA; // anyway + fs := nil; + + try + fs := openDiskFileRO(filename); + except + fs := nil; end; - - if ( TGAHeader.ColorMapType <> 0 ) then + if fs = nil then begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: Bad ColorMapType', MSG_WARNING ); - Exit; + e_WriteLog('Texture "'+filename+'" not found', MSG_WARNING); + exit; end; - if ( TGAHeader.BPP < 24 ) then - begin - CloseFile( TGAFile ); - e_WriteLog( 'Error loading texture: BPP less than 24', MSG_WARNING ); - Exit; + try + imageSize := fs.size; + GetMem(img, imageSize); + try + fs.readBuffer(img^, imageSize); + result := LoadTextureMemEx(img, imageSize, Texture, fX, fY, fWidth, fHeight, Fmt); + finally + FreeMem(img); + end; + finally + fs.Free(); end; - - Width := TGAHeader.Width[0] + TGAHeader.Width[1] * 256; - Height := TGAHeader.Height[0] + TGAHeader.Height[1] * 256; - BPP := TGAHeader.BPP; - - if fX > Width then Exit; - if fY > Height then Exit; - if fX+fWidth > Width then Exit; - if fY+fHeight > Height then Exit; - - ImageSize := Width * Height * (BPP div 8); - GetMem( Image2, ImageSize ); - BlockRead( TGAFile, Image2^, ImageSize ); - - CloseFile( TGAFile ); - - for i := 0 to Width * Height - 1 do - begin - Front := PByte(Image2) + i * (BPP div 8); - Back := PByte(Image2) + i * (BPP div 8) + 2; - Temp := Front^; - Front^ := Back^; - Back^ := Temp; - end; - - fY := Height - (fY + fHeight); - - ImageSize := fHeight * fWidth * (BPP div 8); - GetMem( Image, ImageSize ); - - Base := PByte(Image2) + fY * Width * (BPP div 8) + fX * (BPP div 8); - - for i := 0 to fHeight-1 do - begin - CopyMemory( PByte(image) + fWidth * (BPP div 8) * i, - Base + Width * (BPP div 8) * i, fWidth * (BPP div 8) ); - end; - - if ( BPP = 24 ) then - TFmt := GL_RGB - else - TFmt := GL_RGBA; - - Texture := CreateTexture( fWidth, fHeight, TFmt, Image ); - - FreeMem( Image ); - FreeMem( Image2 ); - - if Fmt <> nil then Fmt^ := TFmt; - - Result := True; end; end.