diff options
Diffstat (limited to 'src/renderer/tr_image.c')
| -rw-r--r-- | src/renderer/tr_image.c | 2570 |
1 files changed, 2570 insertions, 0 deletions
diff --git a/src/renderer/tr_image.c b/src/renderer/tr_image.c new file mode 100644 index 00000000..15d6c7ec --- /dev/null +++ b/src/renderer/tr_image.c @@ -0,0 +1,2570 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. + +This file is part of Quake III Arena source code. + +Quake III Arena source code is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2 of the License, +or (at your option) any later version. + +Quake III Arena source code is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Quake III Arena source code; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +=========================================================================== +*/ +// tr_image.c +#include "tr_local.h" + +/* + * Include file for users of JPEG library. + * You will need to have included system headers that define at least + * the typedefs FILE and size_t before you can include jpeglib.h. + * (stdio.h is sufficient on ANSI-conforming systems.) + * You may also wish to include "jerror.h". + */ + +#define JPEG_INTERNALS +#include "../jpeg-6/jpeglib.h" + + +static void LoadBMP( const char *name, byte **pic, int *width, int *height ); +static void LoadTGA( const char *name, byte **pic, int *width, int *height ); +static void LoadJPG( const char *name, byte **pic, int *width, int *height ); + +static byte s_intensitytable[256]; +static unsigned char s_gammatable[256]; + +int gl_filter_min = GL_LINEAR_MIPMAP_NEAREST; +int gl_filter_max = GL_LINEAR; + +#define FILE_HASH_SIZE 1024 +static image_t* hashTable[FILE_HASH_SIZE]; + +/* +** R_GammaCorrect +*/ +void R_GammaCorrect( byte *buffer, int bufSize ) { + int i; + + for ( i = 0; i < bufSize; i++ ) { + buffer[i] = s_gammatable[buffer[i]]; + } +} + +typedef struct { + char *name; + int minimize, maximize; +} textureMode_t; + +textureMode_t modes[] = { + {"GL_NEAREST", GL_NEAREST, GL_NEAREST}, + {"GL_LINEAR", GL_LINEAR, GL_LINEAR}, + {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST}, + {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR}, + {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST}, + {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR} +}; + +/* +================ +return a hash value for the filename +================ +*/ +static long generateHashValue( const char *fname ) { + int i; + long hash; + char letter; + + hash = 0; + i = 0; + while (fname[i] != '\0') { + letter = tolower(fname[i]); + if (letter =='.') break; // don't include extension + if (letter =='\\') letter = '/'; // damn path names + hash+=(long)(letter)*(i+119); + i++; + } + hash &= (FILE_HASH_SIZE-1); + return hash; +} + +/* +=============== +GL_TextureMode +=============== +*/ +void GL_TextureMode( const char *string ) { + int i; + image_t *glt; + + for ( i=0 ; i< 6 ; i++ ) { + if ( !Q_stricmp( modes[i].name, string ) ) { + break; + } + } + + // hack to prevent trilinear from being set on voodoo, + // because their driver freaks... + if ( i == 5 && glConfig.hardwareType == GLHW_3DFX_2D3D ) { + ri.Printf( PRINT_ALL, "Refusing to set trilinear on a voodoo.\n" ); + i = 3; + } + + + if ( i == 6 ) { + ri.Printf (PRINT_ALL, "bad filter name\n"); + return; + } + + gl_filter_min = modes[i].minimize; + gl_filter_max = modes[i].maximize; + + // change all the existing mipmap texture objects + for ( i = 0 ; i < tr.numImages ; i++ ) { + glt = tr.images[ i ]; + if ( glt->mipmap ) { + GL_Bind (glt); + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); + } + } +} + +/* +=============== +R_SumOfUsedImages +=============== +*/ +int R_SumOfUsedImages( void ) { + int total; + int i; + + total = 0; + for ( i = 0; i < tr.numImages; i++ ) { + if ( tr.images[i]->frameUsed == tr.frameCount ) { + total += tr.images[i]->uploadWidth * tr.images[i]->uploadHeight; + } + } + + return total; +} + +/* +=============== +R_ImageList_f +=============== +*/ +void R_ImageList_f( void ) { + int i; + image_t *image; + int texels; + const char *yesno[] = { + "no ", "yes" + }; + + ri.Printf (PRINT_ALL, "\n -w-- -h-- -mm- -TMU- -if-- wrap --name-------\n"); + texels = 0; + + for ( i = 0 ; i < tr.numImages ; i++ ) { + image = tr.images[ i ]; + + texels += image->uploadWidth*image->uploadHeight; + ri.Printf (PRINT_ALL, "%4i: %4i %4i %s %d ", + i, image->uploadWidth, image->uploadHeight, yesno[image->mipmap], image->TMU ); + switch ( image->internalFormat ) { + case 1: + ri.Printf( PRINT_ALL, "I " ); + break; + case 2: + ri.Printf( PRINT_ALL, "IA " ); + break; + case 3: + ri.Printf( PRINT_ALL, "RGB " ); + break; + case 4: + ri.Printf( PRINT_ALL, "RGBA " ); + break; + case GL_RGBA8: + ri.Printf( PRINT_ALL, "RGBA8" ); + break; + case GL_RGB8: + ri.Printf( PRINT_ALL, "RGB8" ); + break; + case GL_RGB4_S3TC: + ri.Printf( PRINT_ALL, "S3TC " ); + break; + case GL_RGBA4: + ri.Printf( PRINT_ALL, "RGBA4" ); + break; + case GL_RGB5: + ri.Printf( PRINT_ALL, "RGB5 " ); + break; + default: + ri.Printf( PRINT_ALL, "???? " ); + } + + switch ( image->wrapClampMode ) { + case GL_REPEAT: + ri.Printf( PRINT_ALL, "rept " ); + break; + case GL_CLAMP: + ri.Printf( PRINT_ALL, "clmp " ); + break; + default: + ri.Printf( PRINT_ALL, "%4i ", image->wrapClampMode ); + break; + } + + ri.Printf( PRINT_ALL, " %s\n", image->imgName ); + } + ri.Printf (PRINT_ALL, " ---------\n"); + ri.Printf (PRINT_ALL, " %i total texels (not including mipmaps)\n", texels); + ri.Printf (PRINT_ALL, " %i total images\n\n", tr.numImages ); +} + +//======================================================================= + +/* +================ +ResampleTexture + +Used to resample images in a more general than quartering fashion. + +This will only be filtered properly if the resampled size +is greater than half the original size. + +If a larger shrinking is needed, use the mipmap function +before or after. +================ +*/ +static void ResampleTexture( unsigned *in, int inwidth, int inheight, unsigned *out, + int outwidth, int outheight ) { + int i, j; + unsigned *inrow, *inrow2; + unsigned frac, fracstep; + unsigned p1[2048], p2[2048]; + byte *pix1, *pix2, *pix3, *pix4; + + if (outwidth>2048) + ri.Error(ERR_DROP, "ResampleTexture: max width"); + + fracstep = inwidth*0x10000/outwidth; + + frac = fracstep>>2; + for ( i=0 ; i<outwidth ; i++ ) { + p1[i] = 4*(frac>>16); + frac += fracstep; + } + frac = 3*(fracstep>>2); + for ( i=0 ; i<outwidth ; i++ ) { + p2[i] = 4*(frac>>16); + frac += fracstep; + } + + for (i=0 ; i<outheight ; i++, out += outwidth) { + inrow = in + inwidth*(int)((i+0.25)*inheight/outheight); + inrow2 = in + inwidth*(int)((i+0.75)*inheight/outheight); + frac = fracstep >> 1; + for (j=0 ; j<outwidth ; j++) { + pix1 = (byte *)inrow + p1[j]; + pix2 = (byte *)inrow + p2[j]; + pix3 = (byte *)inrow2 + p1[j]; + pix4 = (byte *)inrow2 + p2[j]; + ((byte *)(out+j))[0] = (pix1[0] + pix2[0] + pix3[0] + pix4[0])>>2; + ((byte *)(out+j))[1] = (pix1[1] + pix2[1] + pix3[1] + pix4[1])>>2; + ((byte *)(out+j))[2] = (pix1[2] + pix2[2] + pix3[2] + pix4[2])>>2; + ((byte *)(out+j))[3] = (pix1[3] + pix2[3] + pix3[3] + pix4[3])>>2; + } + } +} + +/* +================ +R_LightScaleTexture + +Scale up the pixel values in a texture to increase the +lighting range +================ +*/ +void R_LightScaleTexture (unsigned *in, int inwidth, int inheight, qboolean only_gamma ) +{ + if ( only_gamma ) + { + if ( !glConfig.deviceSupportsGamma ) + { + int i, c; + byte *p; + + p = (byte *)in; + + c = inwidth*inheight; + for (i=0 ; i<c ; i++, p+=4) + { + p[0] = s_gammatable[p[0]]; + p[1] = s_gammatable[p[1]]; + p[2] = s_gammatable[p[2]]; + } + } + } + else + { + int i, c; + byte *p; + + p = (byte *)in; + + c = inwidth*inheight; + + if ( glConfig.deviceSupportsGamma ) + { + for (i=0 ; i<c ; i++, p+=4) + { + p[0] = s_intensitytable[p[0]]; + p[1] = s_intensitytable[p[1]]; + p[2] = s_intensitytable[p[2]]; + } + } + else + { + for (i=0 ; i<c ; i++, p+=4) + { + p[0] = s_gammatable[s_intensitytable[p[0]]]; + p[1] = s_gammatable[s_intensitytable[p[1]]]; + p[2] = s_gammatable[s_intensitytable[p[2]]]; + } + } + } +} + + +/* +================ +R_MipMap2 + +Operates in place, quartering the size of the texture +Proper linear filter +================ +*/ +static void R_MipMap2( unsigned *in, int inWidth, int inHeight ) { + int i, j, k; + byte *outpix; + int inWidthMask, inHeightMask; + int total; + int outWidth, outHeight; + unsigned *temp; + + outWidth = inWidth >> 1; + outHeight = inHeight >> 1; + temp = ri.Hunk_AllocateTempMemory( outWidth * outHeight * 4 ); + + inWidthMask = inWidth - 1; + inHeightMask = inHeight - 1; + + for ( i = 0 ; i < outHeight ; i++ ) { + for ( j = 0 ; j < outWidth ; j++ ) { + outpix = (byte *) ( temp + i * outWidth + j ); + for ( k = 0 ; k < 4 ; k++ ) { + total = + 1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + + 1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + + + 2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + + 4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + + 4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + + + 2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + + 4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + + 4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + + + 1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + + 2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + + 1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k]; + outpix[k] = total / 36; + } + } + } + + Com_Memcpy( in, temp, outWidth * outHeight * 4 ); + ri.Hunk_FreeTempMemory( temp ); +} + +/* +================ +R_MipMap + +Operates in place, quartering the size of the texture +================ +*/ +static void R_MipMap (byte *in, int width, int height) { + int i, j; + byte *out; + int row; + + if ( !r_simpleMipMaps->integer ) { + R_MipMap2( (unsigned *)in, width, height ); + return; + } + + if ( width == 1 && height == 1 ) { + return; + } + + row = width * 4; + out = in; + width >>= 1; + height >>= 1; + + if ( width == 0 || height == 0 ) { + width += height; // get largest + for (i=0 ; i<width ; i++, out+=4, in+=8 ) { + out[0] = ( in[0] + in[4] )>>1; + out[1] = ( in[1] + in[5] )>>1; + out[2] = ( in[2] + in[6] )>>1; + out[3] = ( in[3] + in[7] )>>1; + } + return; + } + + for (i=0 ; i<height ; i++, in+=row) { + for (j=0 ; j<width ; j++, out+=4, in+=8) { + out[0] = (in[0] + in[4] + in[row+0] + in[row+4])>>2; + out[1] = (in[1] + in[5] + in[row+1] + in[row+5])>>2; + out[2] = (in[2] + in[6] + in[row+2] + in[row+6])>>2; + out[3] = (in[3] + in[7] + in[row+3] + in[row+7])>>2; + } + } +} + + +/* +================== +R_BlendOverTexture + +Apply a color blend over a set of pixels +================== +*/ +static void R_BlendOverTexture( byte *data, int pixelCount, byte blend[4] ) { + int i; + int inverseAlpha; + int premult[3]; + + inverseAlpha = 255 - blend[3]; + premult[0] = blend[0] * blend[3]; + premult[1] = blend[1] * blend[3]; + premult[2] = blend[2] * blend[3]; + + for ( i = 0 ; i < pixelCount ; i++, data+=4 ) { + data[0] = ( data[0] * inverseAlpha + premult[0] ) >> 9; + data[1] = ( data[1] * inverseAlpha + premult[1] ) >> 9; + data[2] = ( data[2] * inverseAlpha + premult[2] ) >> 9; + } +} + +byte mipBlendColors[16][4] = { + {0,0,0,0}, + {255,0,0,128}, + {0,255,0,128}, + {0,0,255,128}, + {255,0,0,128}, + {0,255,0,128}, + {0,0,255,128}, + {255,0,0,128}, + {0,255,0,128}, + {0,0,255,128}, + {255,0,0,128}, + {0,255,0,128}, + {0,0,255,128}, + {255,0,0,128}, + {0,255,0,128}, + {0,0,255,128}, +}; + + +/* +=============== +Upload32 + +=============== +*/ +extern qboolean charSet; +static void Upload32( unsigned *data, + int width, int height, + qboolean mipmap, + qboolean picmip, + qboolean lightMap, + int *format, + int *pUploadWidth, int *pUploadHeight ) +{ + int samples; + unsigned *scaledBuffer = NULL; + unsigned *resampledBuffer = NULL; + int scaled_width, scaled_height; + int i, c; + byte *scan; + GLenum internalFormat = GL_RGB; + float rMax = 0, gMax = 0, bMax = 0; + + // + // convert to exact power of 2 sizes + // + for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1) + ; + for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1) + ; + if ( r_roundImagesDown->integer && scaled_width > width ) + scaled_width >>= 1; + if ( r_roundImagesDown->integer && scaled_height > height ) + scaled_height >>= 1; + + if ( scaled_width != width || scaled_height != height ) { + resampledBuffer = ri.Hunk_AllocateTempMemory( scaled_width * scaled_height * 4 ); + ResampleTexture (data, width, height, resampledBuffer, scaled_width, scaled_height); + data = resampledBuffer; + width = scaled_width; + height = scaled_height; + } + + // + // perform optional picmip operation + // + if ( picmip ) { + scaled_width >>= r_picmip->integer; + scaled_height >>= r_picmip->integer; + } + + // + // clamp to minimum size + // + if (scaled_width < 1) { + scaled_width = 1; + } + if (scaled_height < 1) { + scaled_height = 1; + } + + // + // clamp to the current upper OpenGL limit + // scale both axis down equally so we don't have to + // deal with a half mip resampling + // + while ( scaled_width > glConfig.maxTextureSize + || scaled_height > glConfig.maxTextureSize ) { + scaled_width >>= 1; + scaled_height >>= 1; + } + + scaledBuffer = ri.Hunk_AllocateTempMemory( sizeof( unsigned ) * scaled_width * scaled_height ); + + // + // scan the texture for each channel's max values + // and verify if the alpha channel is being used or not + // + c = width*height; + scan = ((byte *)data); + samples = 3; + if (!lightMap) { + for ( i = 0; i < c; i++ ) + { + if ( scan[i*4+0] > rMax ) + { + rMax = scan[i*4+0]; + } + if ( scan[i*4+1] > gMax ) + { + gMax = scan[i*4+1]; + } + if ( scan[i*4+2] > bMax ) + { + bMax = scan[i*4+2]; + } + if ( scan[i*4 + 3] != 255 ) + { + samples = 4; + break; + } + } + // select proper internal format + if ( samples == 3 ) + { + if ( glConfig.textureCompression == TC_S3TC ) + { + internalFormat = GL_RGB4_S3TC; + } + else if ( r_texturebits->integer == 16 ) + { + internalFormat = GL_RGB5; + } + else if ( r_texturebits->integer == 32 ) + { + internalFormat = GL_RGB8; + } + else + { + internalFormat = 3; + } + } + else if ( samples == 4 ) + { + if ( r_texturebits->integer == 16 ) + { + internalFormat = GL_RGBA4; + } + else if ( r_texturebits->integer == 32 ) + { + internalFormat = GL_RGBA8; + } + else + { + internalFormat = 4; + } + } + } else { + internalFormat = 3; + } + // copy or resample data as appropriate for first MIP level + if ( ( scaled_width == width ) && + ( scaled_height == height ) ) { + if (!mipmap) + { + qglTexImage2D (GL_TEXTURE_2D, 0, internalFormat, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); + *pUploadWidth = scaled_width; + *pUploadHeight = scaled_height; + *format = internalFormat; + + goto done; + } + Com_Memcpy (scaledBuffer, data, width*height*4); + } + else + { + // use the normal mip-mapping function to go down from here + while ( width > scaled_width || height > scaled_height ) { + R_MipMap( (byte *)data, width, height ); + width >>= 1; + height >>= 1; + if ( width < 1 ) { + width = 1; + } + if ( height < 1 ) { + height = 1; + } + } + Com_Memcpy( scaledBuffer, data, width * height * 4 ); + } + + R_LightScaleTexture (scaledBuffer, scaled_width, scaled_height, !mipmap ); + + *pUploadWidth = scaled_width; + *pUploadHeight = scaled_height; + *format = internalFormat; + + qglTexImage2D (GL_TEXTURE_2D, 0, internalFormat, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaledBuffer ); + + if (mipmap) + { + int miplevel; + + miplevel = 0; + while (scaled_width > 1 || scaled_height > 1) + { + R_MipMap( (byte *)scaledBuffer, scaled_width, scaled_height ); + scaled_width >>= 1; + scaled_height >>= 1; + if (scaled_width < 1) + scaled_width = 1; + if (scaled_height < 1) + scaled_height = 1; + miplevel++; + + if ( r_colorMipLevels->integer ) { + R_BlendOverTexture( (byte *)scaledBuffer, scaled_width * scaled_height, mipBlendColors[miplevel] ); + } + + qglTexImage2D (GL_TEXTURE_2D, miplevel, internalFormat, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaledBuffer ); + } + } +done: + + if (mipmap) + { + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); + } + else + { + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); + } + + GL_CheckErrors(); + + if ( scaledBuffer != 0 ) + ri.Hunk_FreeTempMemory( scaledBuffer ); + if ( resampledBuffer != 0 ) + ri.Hunk_FreeTempMemory( resampledBuffer ); +} + + +/* +================ +R_CreateImage + +This is the only way any image_t are created +================ +*/ +image_t *R_CreateImage( const char *name, const byte *pic, int width, int height, + qboolean mipmap, qboolean allowPicmip, int glWrapClampMode ) { + image_t *image; + qboolean isLightmap = qfalse; + long hash; + + if (strlen(name) >= MAX_QPATH ) { + ri.Error (ERR_DROP, "R_CreateImage: \"%s\" is too long\n", name); + } + if ( !strncmp( name, "*lightmap", 9 ) ) { + isLightmap = qtrue; + } + + if ( tr.numImages == MAX_DRAWIMAGES ) { + ri.Error( ERR_DROP, "R_CreateImage: MAX_DRAWIMAGES hit\n"); + } + + image = tr.images[tr.numImages] = ri.Hunk_Alloc( sizeof( image_t ), h_low ); + image->texnum = 1024 + tr.numImages; + tr.numImages++; + + image->mipmap = mipmap; + image->allowPicmip = allowPicmip; + + strcpy (image->imgName, name); + + image->width = width; + image->height = height; + image->wrapClampMode = glWrapClampMode; + + // lightmaps are always allocated on TMU 1 + if ( qglActiveTextureARB && isLightmap ) { + image->TMU = 1; + } else { + image->TMU = 0; + } + + if ( qglActiveTextureARB ) { + GL_SelectTexture( image->TMU ); + } + + GL_Bind(image); + + Upload32( (unsigned *)pic, image->width, image->height, + image->mipmap, + allowPicmip, + isLightmap, + &image->internalFormat, + &image->uploadWidth, + &image->uploadHeight ); + + qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapClampMode ); + qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapClampMode ); + + qglBindTexture( GL_TEXTURE_2D, 0 ); + + if ( image->TMU == 1 ) { + GL_SelectTexture( 0 ); + } + + hash = generateHashValue(name); + image->next = hashTable[hash]; + hashTable[hash] = image; + + return image; +} + + +/* +========================================================= + +BMP LOADING + +========================================================= +*/ +typedef struct +{ + char id[2]; + unsigned long fileSize; + unsigned long reserved0; + unsigned long bitmapDataOffset; + unsigned long bitmapHeaderSize; + unsigned long width; + unsigned long height; + unsigned short planes; + unsigned short bitsPerPixel; + unsigned long compression; + unsigned long bitmapDataSize; + unsigned long hRes; + unsigned long vRes; + unsigned long colors; + unsigned long importantColors; + unsigned char palette[256][4]; +} BMPHeader_t; + +static void LoadBMP( const char *name, byte **pic, int *width, int *height ) +{ + int columns, rows; + unsigned numPixels; + byte *pixbuf; + int row, column; + byte *buf_p; + byte *buffer; + int length; + BMPHeader_t bmpHeader; + byte *bmpRGBA; + + *pic = NULL; + + // + // load the file + // + length = ri.FS_ReadFile( ( char * ) name, (void **)&buffer); + if (!buffer) { + return; + } + + buf_p = buffer; + + bmpHeader.id[0] = *buf_p++; + bmpHeader.id[1] = *buf_p++; + bmpHeader.fileSize = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.reserved0 = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.bitmapDataOffset = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.bitmapHeaderSize = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.width = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.height = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.planes = LittleShort( * ( short * ) buf_p ); + buf_p += 2; + bmpHeader.bitsPerPixel = LittleShort( * ( short * ) buf_p ); + buf_p += 2; + bmpHeader.compression = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.bitmapDataSize = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.hRes = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.vRes = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.colors = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + bmpHeader.importantColors = LittleLong( * ( long * ) buf_p ); + buf_p += 4; + + Com_Memcpy( bmpHeader.palette, buf_p, sizeof( bmpHeader.palette ) ); + + if ( bmpHeader.bitsPerPixel == 8 ) + buf_p += 1024; + + if ( bmpHeader.id[0] != 'B' && bmpHeader.id[1] != 'M' ) + { + ri.Error( ERR_DROP, "LoadBMP: only Windows-style BMP files supported (%s)\n", name ); + } + if ( bmpHeader.fileSize != length ) + { + ri.Error( ERR_DROP, "LoadBMP: header size does not match file size (%d vs. %d) (%s)\n", bmpHeader.fileSize, length, name ); + } + if ( bmpHeader.compression != 0 ) + { + ri.Error( ERR_DROP, "LoadBMP: only uncompressed BMP files supported (%s)\n", name ); + } + if ( bmpHeader.bitsPerPixel < 8 ) + { + ri.Error( ERR_DROP, "LoadBMP: monochrome and 4-bit BMP files not supported (%s)\n", name ); + } + + columns = bmpHeader.width; + rows = bmpHeader.height; + if ( rows < 0 ) + rows = -rows; + numPixels = columns * rows; + + if(columns <= 0 || !rows || numPixels > 0x1FFFFFFF // 4*1FFFFFFF == 0x7FFFFFFC < 0x7FFFFFFF + || ((numPixels * 4) / columns) / 4 != rows) + { + ri.Error (ERR_DROP, "LoadBMP: %s has an invalid image size\n", name); + } + + if ( width ) + *width = columns; + if ( height ) + *height = rows; + + bmpRGBA = ri.Malloc( numPixels * 4 ); + *pic = bmpRGBA; + + + for ( row = rows-1; row >= 0; row-- ) + { + pixbuf = bmpRGBA + row*columns*4; + + for ( column = 0; column < columns; column++ ) + { + unsigned char red, green, blue, alpha; + int palIndex; + unsigned short shortPixel; + + switch ( bmpHeader.bitsPerPixel ) + { + case 8: + palIndex = *buf_p++; + *pixbuf++ = bmpHeader.palette[palIndex][2]; + *pixbuf++ = bmpHeader.palette[palIndex][1]; + *pixbuf++ = bmpHeader.palette[palIndex][0]; + *pixbuf++ = 0xff; + break; + case 16: + shortPixel = * ( unsigned short * ) pixbuf; + pixbuf += 2; + *pixbuf++ = ( shortPixel & ( 31 << 10 ) ) >> 7; + *pixbuf++ = ( shortPixel & ( 31 << 5 ) ) >> 2; + *pixbuf++ = ( shortPixel & ( 31 ) ) << 3; + *pixbuf++ = 0xff; + break; + + case 24: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = 255; + break; + case 32: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + alpha = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = alpha; + break; + default: + ri.Error( ERR_DROP, "LoadBMP: illegal pixel_size '%d' in file '%s'\n", bmpHeader.bitsPerPixel, name ); + break; + } + } + } + + ri.FS_FreeFile( buffer ); + +} + + +/* +================================================================= + +PCX LOADING + +================================================================= +*/ + + +/* +============== +LoadPCX +============== +*/ +static void LoadPCX ( const char *filename, byte **pic, byte **palette, int *width, int *height) +{ + byte *raw; + pcx_t *pcx; + int x, y; + int len; + int dataByte, runLength; + byte *out, *pix; + unsigned xmax, ymax; + + *pic = NULL; + *palette = NULL; + + // + // load the file + // + len = ri.FS_ReadFile( ( char * ) filename, (void **)&raw); + if (!raw) { + return; + } + + // + // parse the PCX file + // + pcx = (pcx_t *)raw; + raw = &pcx->data; + + xmax = LittleShort(pcx->xmax); + ymax = LittleShort(pcx->ymax); + + if (pcx->manufacturer != 0x0a + || pcx->version != 5 + || pcx->encoding != 1 + || pcx->bits_per_pixel != 8 + || xmax >= 1024 + || ymax >= 1024) + { + ri.Printf (PRINT_ALL, "Bad pcx file %s (%i x %i) (%i x %i)\n", filename, xmax+1, ymax+1, pcx->xmax, pcx->ymax); + return; + } + + out = ri.Malloc ( (ymax+1) * (xmax+1) ); + + *pic = out; + + pix = out; + + if (palette) + { + *palette = ri.Malloc(768); + Com_Memcpy (*palette, (byte *)pcx + len - 768, 768); + } + + if (width) + *width = xmax+1; + if (height) + *height = ymax+1; +// FIXME: use bytes_per_line here? + + for (y=0 ; y<=ymax ; y++, pix += xmax+1) + { + for (x=0 ; x<=xmax ; ) + { + dataByte = *raw++; + + if((dataByte & 0xC0) == 0xC0) + { + runLength = dataByte & 0x3F; + dataByte = *raw++; + } + else + runLength = 1; + + while(runLength-- > 0) + pix[x++] = dataByte; + } + + } + + if ( raw - (byte *)pcx > len) + { + ri.Printf (PRINT_DEVELOPER, "PCX file %s was malformed", filename); + ri.Free (*pic); + *pic = NULL; + } + + ri.FS_FreeFile (pcx); +} + + +/* +============== +LoadPCX32 +============== +*/ +static void LoadPCX32 ( const char *filename, byte **pic, int *width, int *height) { + byte *palette; + byte *pic8; + int i, c, p; + byte *pic32; + + LoadPCX (filename, &pic8, &palette, width, height); + if (!pic8) { + *pic = NULL; + return; + } + + // LoadPCX32 ensures width, height < 1024 + c = (*width) * (*height); + pic32 = *pic = ri.Malloc(4 * c ); + for (i = 0 ; i < c ; i++) { + p = pic8[i]; + pic32[0] = palette[p*3]; + pic32[1] = palette[p*3 + 1]; + pic32[2] = palette[p*3 + 2]; + pic32[3] = 255; + pic32 += 4; + } + + ri.Free (pic8); + ri.Free (palette); +} + +/* +========================================================= + +TARGA LOADING + +========================================================= +*/ + +/* +============= +LoadTGA +============= +*/ +static void LoadTGA ( const char *name, byte **pic, int *width, int *height) +{ + unsigned columns, rows, numPixels; + byte *pixbuf; + int row, column; + byte *buf_p; + byte *buffer; + TargaHeader targa_header; + byte *targa_rgba; + + *pic = NULL; + + // + // load the file + // + ri.FS_ReadFile ( ( char * ) name, (void **)&buffer); + if (!buffer) { + return; + } + + buf_p = buffer; + + targa_header.id_length = buf_p[0]; + targa_header.colormap_type = buf_p[1]; + targa_header.image_type = buf_p[2]; + + memcpy(&targa_header.colormap_index, &buf_p[3], 2); + memcpy(&targa_header.colormap_length, &buf_p[5], 2); + targa_header.colormap_size = buf_p[7]; + memcpy(&targa_header.x_origin, &buf_p[8], 2); + memcpy(&targa_header.y_origin, &buf_p[10], 2); + memcpy(&targa_header.width, &buf_p[12], 2); + memcpy(&targa_header.height, &buf_p[14], 2); + targa_header.pixel_size = buf_p[16]; + targa_header.attributes = buf_p[17]; + + targa_header.colormap_index = LittleShort(targa_header.colormap_index); + targa_header.colormap_length = LittleShort(targa_header.colormap_length); + targa_header.x_origin = LittleShort(targa_header.x_origin); + targa_header.y_origin = LittleShort(targa_header.y_origin); + targa_header.width = LittleShort(targa_header.width); + targa_header.height = LittleShort(targa_header.height); + + buf_p += 18; + + if (targa_header.image_type!=2 + && targa_header.image_type!=10 + && targa_header.image_type != 3 ) + { + ri.Error (ERR_DROP, "LoadTGA: Only type 2 (RGB), 3 (gray), and 10 (RGB) TGA images supported\n"); + } + + if ( targa_header.colormap_type != 0 ) + { + ri.Error( ERR_DROP, "LoadTGA: colormaps not supported\n" ); + } + + if ( ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) && targa_header.image_type != 3 ) + { + ri.Error (ERR_DROP, "LoadTGA: Only 32 or 24 bit images supported (no colormaps)\n"); + } + + columns = targa_header.width; + rows = targa_header.height; + numPixels = columns * rows * 4; + + if (width) + *width = columns; + if (height) + *height = rows; + + if(!columns || !rows || numPixels > 0x7FFFFFFF || numPixels / columns / 4 != rows) + { + ri.Error (ERR_DROP, "LoadTGA: %s has an invalid image size\n", name); + } + + targa_rgba = ri.Malloc (numPixels); + *pic = targa_rgba; + + if (targa_header.id_length != 0) + buf_p += targa_header.id_length; // skip TARGA image comment + + if ( targa_header.image_type==2 || targa_header.image_type == 3 ) + { + // Uncompressed RGB or gray scale image + for(row=rows-1; row>=0; row--) + { + pixbuf = targa_rgba + row*columns*4; + for(column=0; column<columns; column++) + { + unsigned char red,green,blue,alphabyte; + switch (targa_header.pixel_size) + { + + case 8: + blue = *buf_p++; + green = blue; + red = blue; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = 255; + break; + + case 24: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = 255; + break; + case 32: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + alphabyte = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = alphabyte; + break; + default: + ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name ); + break; + } + } + } + } + else if (targa_header.image_type==10) { // Runlength encoded RGB images + unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j; + + red = 0; + green = 0; + blue = 0; + alphabyte = 0xff; + + for(row=rows-1; row>=0; row--) { + pixbuf = targa_rgba + row*columns*4; + for(column=0; column<columns; ) { + packetHeader= *buf_p++; + packetSize = 1 + (packetHeader & 0x7f); + if (packetHeader & 0x80) { // run-length packet + switch (targa_header.pixel_size) { + case 24: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + alphabyte = 255; + break; + case 32: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + alphabyte = *buf_p++; + break; + default: + ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name ); + break; + } + + for(j=0;j<packetSize;j++) { + *pixbuf++=red; + *pixbuf++=green; + *pixbuf++=blue; + *pixbuf++=alphabyte; + column++; + if (column==columns) { // run spans across rows + column=0; + if (row>0) + row--; + else + goto breakOut; + pixbuf = targa_rgba + row*columns*4; + } + } + } + else { // non run-length packet + for(j=0;j<packetSize;j++) { + switch (targa_header.pixel_size) { + case 24: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = 255; + break; + case 32: + blue = *buf_p++; + green = *buf_p++; + red = *buf_p++; + alphabyte = *buf_p++; + *pixbuf++ = red; + *pixbuf++ = green; + *pixbuf++ = blue; + *pixbuf++ = alphabyte; + break; + default: + ri.Error( ERR_DROP, "LoadTGA: illegal pixel_size '%d' in file '%s'\n", targa_header.pixel_size, name ); + break; + } + column++; + if (column==columns) { // pixel packet run spans across rows + column=0; + if (row>0) + row--; + else + goto breakOut; + pixbuf = targa_rgba + row*columns*4; + } + } + } + } + breakOut:; + } + } + +#if 0 + // TTimo: this is the chunk of code to ensure a behavior that meets TGA specs + // bk0101024 - fix from Leonardo + // bit 5 set => top-down + if (targa_header.attributes & 0x20) { + unsigned char *flip = (unsigned char*)malloc (columns*4); + unsigned char *src, *dst; + + for (row = 0; row < rows/2; row++) { + src = targa_rgba + row * 4 * columns; + dst = targa_rgba + (rows - row - 1) * 4 * columns; + + memcpy (flip, src, columns*4); + memcpy (src, dst, columns*4); + memcpy (dst, flip, columns*4); + } + free (flip); + } +#endif + // instead we just print a warning + if (targa_header.attributes & 0x20) { + ri.Printf( PRINT_WARNING, "WARNING: '%s' TGA file header declares top-down image, ignoring\n", name); + } + + ri.FS_FreeFile (buffer); +} + +static void LoadJPG( const char *filename, unsigned char **pic, int *width, int *height ) { + /* This struct contains the JPEG decompression parameters and pointers to + * working space (which is allocated as needed by the JPEG library). + */ + struct jpeg_decompress_struct cinfo = {NULL}; + /* We use our private extension JPEG error handler. + * Note that this struct must live as long as the main JPEG parameter + * struct, to avoid dangling-pointer problems. + */ + /* This struct represents a JPEG error handler. It is declared separately + * because applications often want to supply a specialized error handler + * (see the second half of this file for an example). But here we just + * take the easy way out and use the standard error handler, which will + * print a message on stderr and call exit() if compression fails. + * Note that this struct must live as long as the main JPEG parameter + * struct, to avoid dangling-pointer problems. + */ + struct jpeg_error_mgr jerr; + /* More stuff */ + JSAMPARRAY buffer; /* Output row buffer */ + unsigned row_stride; /* physical row width in output buffer */ + unsigned pixelcount, memcount; + unsigned char *out; + byte *fbuffer; + byte *buf; + + /* In this example we want to open the input file before doing anything else, + * so that the setjmp() error recovery below can assume the file is open. + * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that + * requires it in order to read binary files. + */ + + ri.FS_ReadFile ( ( char * ) filename, (void **)&fbuffer); + if (!fbuffer) { + return; + } + + /* Step 1: allocate and initialize JPEG decompression object */ + + /* We have to set up the error handler first, in case the initialization + * step fails. (Unlikely, but it could happen if you are out of memory.) + * This routine fills in the contents of struct jerr, and returns jerr's + * address which we place into the link field in cinfo. + */ + cinfo.err = jpeg_std_error(&jerr); + + /* Now we can initialize the JPEG decompression object. */ + jpeg_create_decompress(&cinfo); + + /* Step 2: specify data source (eg, a file) */ + + jpeg_stdio_src(&cinfo, fbuffer); + + /* Step 3: read file parameters with jpeg_read_header() */ + + (void) jpeg_read_header(&cinfo, TRUE); + /* We can ignore the return value from jpeg_read_header since + * (a) suspension is not possible with the stdio data source, and + * (b) we passed TRUE to reject a tables-only JPEG file as an error. + * See libjpeg.doc for more info. + */ + + /* Step 4: set parameters for decompression */ + + /* In this example, we don't need to change any of the defaults set by + * jpeg_read_header(), so we do nothing here. + */ + + /* Step 5: Start decompressor */ + + (void) jpeg_start_decompress(&cinfo); + /* We can ignore the return value since suspension is not possible + * with the stdio data source. + */ + + /* We may need to do some setup of our own at this point before reading + * the data. After jpeg_start_decompress() we have the correct scaled + * output image dimensions available, as well as the output colormap + * if we asked for color quantization. + * In this example, we need to make an output work buffer of the right size. + */ + /* JSAMPLEs per row in output buffer */ + + pixelcount = cinfo.output_width * cinfo.output_height; + + if(!cinfo.output_width || !cinfo.output_height + || ((pixelcount * 4) / cinfo.output_width) / 4 != cinfo.output_height + || pixelcount > 0x1FFFFFFF || cinfo.output_components > 4) // 4*1FFFFFFF == 0x7FFFFFFC < 0x7FFFFFFF + { + ri.Error (ERR_DROP, "LoadJPG: %s has an invalid image size: %dx%d*4=%d, components: %d\n", filename, + cinfo.output_width, cinfo.output_height, pixelcount * 4, cinfo.output_components); + } + + memcount = pixelcount * 4; + row_stride = cinfo.output_width * cinfo.output_components; + + out = ri.Malloc(memcount); + + *width = cinfo.output_width; + *height = cinfo.output_height; + + /* Step 6: while (scan lines remain to be read) */ + /* jpeg_read_scanlines(...); */ + + /* Here we use the library's state variable cinfo.output_scanline as the + * loop counter, so that we don't have to keep track ourselves. + */ + while (cinfo.output_scanline < cinfo.output_height) { + /* jpeg_read_scanlines expects an array of pointers to scanlines. + * Here the array is only one element long, but you could ask for + * more than one scanline at a time if that's more convenient. + */ + buf = ((out+(row_stride*cinfo.output_scanline))); + buffer = &buf; + (void) jpeg_read_scanlines(&cinfo, buffer, 1); + } + + buf = out; + + // If we are processing an 8-bit JPEG (greyscale), we'll have to convert + // the greyscale values to RGBA. + if(cinfo.output_components == 1) + { + int sindex = pixelcount, dindex = memcount; + unsigned char greyshade; + + // Only pixelcount number of bytes have been written. + // Expand the color values over the rest of the buffer, starting + // from the end. + do + { + greyshade = buf[--sindex]; + + buf[--dindex] = 255; + buf[--dindex] = greyshade; + buf[--dindex] = greyshade; + buf[--dindex] = greyshade; + } while(sindex); + } + else + { + // clear all the alphas to 255 + int i; + + for ( i = 3 ; i < memcount ; i+=4 ) + { + buf[i] = 255; + } + } + + *pic = out; + + /* Step 7: Finish decompression */ + + (void) jpeg_finish_decompress(&cinfo); + /* We can ignore the return value since suspension is not possible + * with the stdio data source. + */ + + /* Step 8: Release JPEG decompression object */ + + /* This is an important step since it will release a good deal of memory. */ + jpeg_destroy_decompress(&cinfo); + + /* After finish_decompress, we can close the input file. + * Here we postpone it until after no more JPEG errors are possible, + * so as to simplify the setjmp error logic above. (Actually, I don't + * think that jpeg_destroy can do an error exit, but why assume anything...) + */ + ri.FS_FreeFile (fbuffer); + + /* At this point you may want to check to see whether any corrupt-data + * warnings occurred (test whether jerr.pub.num_warnings is nonzero). + */ + + /* And we're done! */ +} + + +/* Expanded data destination object for stdio output */ + +typedef struct { + struct jpeg_destination_mgr pub; /* public fields */ + + byte* outfile; /* target stream */ + int size; +} my_destination_mgr; + +typedef my_destination_mgr * my_dest_ptr; + + +/* + * Initialize destination --- called by jpeg_start_compress + * before any data is actually written. + */ + +void init_destination (j_compress_ptr cinfo) +{ + my_dest_ptr dest = (my_dest_ptr) cinfo->dest; + + dest->pub.next_output_byte = dest->outfile; + dest->pub.free_in_buffer = dest->size; +} + + +/* + * Empty the output buffer --- called whenever buffer fills up. + * + * In typical applications, this should write the entire output buffer + * (ignoring the current state of next_output_byte & free_in_buffer), + * reset the pointer & count to the start of the buffer, and return TRUE + * indicating that the buffer has been dumped. + * + * In applications that need to be able to suspend compression due to output + * overrun, a FALSE return indicates that the buffer cannot be emptied now. + * In this situation, the compressor will return to its caller (possibly with + * an indication that it has not accepted all the supplied scanlines). The + * application should resume compression after it has made more room in the + * output buffer. Note that there are substantial restrictions on the use of + * suspension --- see the documentation. + * + * When suspending, the compressor will back up to a convenient restart point + * (typically the start of the current MCU). next_output_byte & free_in_buffer + * indicate where the restart point will be if the current call returns FALSE. + * Data beyond this point will be regenerated after resumption, so do not + * write it out when emptying the buffer externally. + */ + +boolean empty_output_buffer (j_compress_ptr cinfo) +{ + return TRUE; +} + + +/* + * Compression initialization. + * Before calling this, all parameters and a data destination must be set up. + * + * We require a write_all_tables parameter as a failsafe check when writing + * multiple datastreams from the same compression object. Since prior runs + * will have left all the tables marked sent_table=TRUE, a subsequent run + * would emit an abbreviated stream (no tables) by default. This may be what + * is wanted, but for safety's sake it should not be the default behavior: + * programmers should have to make a deliberate choice to emit abbreviated + * images. Therefore the documentation and examples should encourage people + * to pass write_all_tables=TRUE; then it will take active thought to do the + * wrong thing. + */ + +GLOBAL void +jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables) +{ + if (cinfo->global_state != CSTATE_START) + ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); + + if (write_all_tables) + jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */ + + /* (Re)initialize error mgr and destination modules */ + (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); + (*cinfo->dest->init_destination) (cinfo); + /* Perform master selection of active modules */ + jinit_compress_master(cinfo); + /* Set up for the first pass */ + (*cinfo->master->prepare_for_pass) (cinfo); + /* Ready for application to drive first pass through jpeg_write_scanlines + * or jpeg_write_raw_data. + */ + cinfo->next_scanline = 0; + cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING); +} + + +/* + * Write some scanlines of data to the JPEG compressor. + * + * The return value will be the number of lines actually written. + * This should be less than the supplied num_lines only in case that + * the data destination module has requested suspension of the compressor, + * or if more than image_height scanlines are passed in. + * + * Note: we warn about excess calls to jpeg_write_scanlines() since + * this likely signals an application programmer error. However, + * excess scanlines passed in the last valid call are *silently* ignored, + * so that the application need not adjust num_lines for end-of-image + * when using a multiple-scanline buffer. + */ + +GLOBAL JDIMENSION +jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines, + JDIMENSION num_lines) +{ + JDIMENSION row_ctr, rows_left; + + if (cinfo->global_state != CSTATE_SCANNING) + ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); + if (cinfo->next_scanline >= cinfo->image_height) + WARNMS(cinfo, JWRN_TOO_MUCH_DATA); + + /* Call progress monitor hook if present */ + if (cinfo->progress != NULL) { + cinfo->progress->pass_counter = (long) cinfo->next_scanline; + cinfo->progress->pass_limit = (long) cinfo->image_height; + (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); + } + + /* Give master control module another chance if this is first call to + * jpeg_write_scanlines. This lets output of the frame/scan headers be + * delayed so that application can write COM, etc, markers between + * jpeg_start_compress and jpeg_write_scanlines. + */ + if (cinfo->master->call_pass_startup) + (*cinfo->master->pass_startup) (cinfo); + + /* Ignore any extra scanlines at bottom of image. */ + rows_left = cinfo->image_height - cinfo->next_scanline; + if (num_lines > rows_left) + num_lines = rows_left; + + row_ctr = 0; + (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines); + cinfo->next_scanline += row_ctr; + return row_ctr; +} + +/* + * Terminate destination --- called by jpeg_finish_compress + * after all data has been written. Usually needs to flush buffer. + * + * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding + * application must deal with any cleanup that should happen even + * for error exit. + */ + +static int hackSize; + +void term_destination (j_compress_ptr cinfo) +{ + my_dest_ptr dest = (my_dest_ptr) cinfo->dest; + size_t datacount = dest->size - dest->pub.free_in_buffer; + hackSize = datacount; +} + + +/* + * Prepare for output to a stdio stream. + * The caller must have already opened the stream, and is responsible + * for closing it after finishing compression. + */ + +void jpegDest (j_compress_ptr cinfo, byte* outfile, int size) +{ + my_dest_ptr dest; + + /* The destination object is made permanent so that multiple JPEG images + * can be written to the same file without re-executing jpeg_stdio_dest. + * This makes it dangerous to use this manager and a different destination + * manager serially with the same JPEG object, because their private object + * sizes may be different. Caveat programmer. + */ + if (cinfo->dest == NULL) { /* first time for this JPEG object? */ + cinfo->dest = (struct jpeg_destination_mgr *) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, + sizeof(my_destination_mgr)); + } + + dest = (my_dest_ptr) cinfo->dest; + dest->pub.init_destination = init_destination; + dest->pub.empty_output_buffer = empty_output_buffer; + dest->pub.term_destination = term_destination; + dest->outfile = outfile; + dest->size = size; +} + +void SaveJPG(char * filename, int quality, int image_width, int image_height, unsigned char *image_buffer) { + /* This struct contains the JPEG compression parameters and pointers to + * working space (which is allocated as needed by the JPEG library). + * It is possible to have several such structures, representing multiple + * compression/decompression processes, in existence at once. We refer + * to any one struct (and its associated working data) as a "JPEG object". + */ + struct jpeg_compress_struct cinfo; + /* This struct represents a JPEG error handler. It is declared separately + * because applications often want to supply a specialized error handler + * (see the second half of this file for an example). But here we just + * take the easy way out and use the standard error handler, which will + * print a message on stderr and call exit() if compression fails. + * Note that this struct must live as long as the main JPEG parameter + * struct, to avoid dangling-pointer problems. + */ + struct jpeg_error_mgr jerr; + /* More stuff */ + JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */ + int row_stride; /* physical row width in image buffer */ + unsigned char *out; + + /* Step 1: allocate and initialize JPEG compression object */ + + /* We have to set up the error handler first, in case the initialization + * step fails. (Unlikely, but it could happen if you are out of memory.) + * This routine fills in the contents of struct jerr, and returns jerr's + * address which we place into the link field in cinfo. + */ + cinfo.err = jpeg_std_error(&jerr); + /* Now we can initialize the JPEG compression object. */ + jpeg_create_compress(&cinfo); + + /* Step 2: specify data destination (eg, a file) */ + /* Note: steps 2 and 3 can be done in either order. */ + + /* Here we use the library-supplied code to send compressed data to a + * stdio stream. You can also write your own code to do something else. + * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that + * requires it in order to write binary files. + */ + out = ri.Hunk_AllocateTempMemory(image_width*image_height*4); + jpegDest(&cinfo, out, image_width*image_height*4); + + /* Step 3: set parameters for compression */ + + /* First we supply a description of the input image. + * Four fields of the cinfo struct must be filled in: + */ + cinfo.image_width = image_width; /* image width and height, in pixels */ + cinfo.image_height = image_height; + cinfo.input_components = 4; /* # of color components per pixel */ + cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ + /* Now use the library's routine to set default compression parameters. + * (You must set at least cinfo.in_color_space before calling this, + * since the defaults depend on the source color space.) + */ + jpeg_set_defaults(&cinfo); + /* Now you can set any non-default parameters you wish to. + * Here we just illustrate the use of quality (quantization table) scaling: + */ + jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */); + + /* Step 4: Start compressor */ + + /* TRUE ensures that we will write a complete interchange-JPEG file. + * Pass TRUE unless you are very sure of what you're doing. + */ + jpeg_start_compress(&cinfo, TRUE); + + /* Step 5: while (scan lines remain to be written) */ + /* jpeg_write_scanlines(...); */ + + /* Here we use the library's state variable cinfo.next_scanline as the + * loop counter, so that we don't have to keep track ourselves. + * To keep things simple, we pass one scanline per call; you can pass + * more if you wish, though. + */ + row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */ + + while (cinfo.next_scanline < cinfo.image_height) { + /* jpeg_write_scanlines expects an array of pointers to scanlines. + * Here the array is only one element long, but you could pass + * more than one scanline at a time if that's more convenient. + */ + row_pointer[0] = & image_buffer[((cinfo.image_height-1)*row_stride)-cinfo.next_scanline * row_stride]; + (void) jpeg_write_scanlines(&cinfo, row_pointer, 1); + } + + /* Step 6: Finish compression */ + + jpeg_finish_compress(&cinfo); + /* After finish_compress, we can close the output file. */ + ri.FS_WriteFile( filename, out, hackSize ); + + ri.Hunk_FreeTempMemory(out); + + /* Step 7: release JPEG compression object */ + + /* This is an important step since it will release a good deal of memory. */ + jpeg_destroy_compress(&cinfo); + + /* And we're done! */ +} + +//=================================================================== + +/* +================= +R_LoadImage + +Loads any of the supported image types into a cannonical +32 bit format. +================= +*/ +void R_LoadImage( const char *name, byte **pic, int *width, int *height ) { + int len; + + *pic = NULL; + *width = 0; + *height = 0; + + len = strlen(name); + if (len<5) { + return; + } + + if ( !Q_stricmp( name+len-4, ".tga" ) ) { + LoadTGA( name, pic, width, height ); // try tga first + if (!*pic) { // + char altname[MAX_QPATH]; // try jpg in place of tga + strcpy( altname, name ); + len = strlen( altname ); + altname[len-3] = 'j'; + altname[len-2] = 'p'; + altname[len-1] = 'g'; + LoadJPG( altname, pic, width, height ); + } + } else if ( !Q_stricmp(name+len-4, ".pcx") ) { + LoadPCX32( name, pic, width, height ); + } else if ( !Q_stricmp( name+len-4, ".bmp" ) ) { + LoadBMP( name, pic, width, height ); + } else if ( !Q_stricmp( name+len-4, ".jpg" ) ) { + LoadJPG( name, pic, width, height ); + } +} + + +/* +=============== +R_FindImageFile + +Finds or loads the given image. +Returns NULL if it fails, not a default image. +============== +*/ +image_t *R_FindImageFile( const char *name, qboolean mipmap, qboolean allowPicmip, int glWrapClampMode ) { + image_t *image; + int width, height; + byte *pic; + long hash; + + if (!name) { + return NULL; + } + + hash = generateHashValue(name); + + // + // see if the image is already loaded + // + for (image=hashTable[hash]; image; image=image->next) { + if ( !strcmp( name, image->imgName ) ) { + // the white image can be used with any set of parms, but other mismatches are errors + if ( strcmp( name, "*white" ) ) { + if ( image->mipmap != mipmap ) { + ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed mipmap parm\n", name ); + } + if ( image->allowPicmip != allowPicmip ) { + ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed allowPicmip parm\n", name ); + } + if ( image->wrapClampMode != glWrapClampMode ) { + ri.Printf( PRINT_ALL, "WARNING: reused image %s with mixed glWrapClampMode parm\n", name ); + } + } + return image; + } + } + + // + // load the pic from disk + // + R_LoadImage( name, &pic, &width, &height ); + if ( pic == NULL ) { // if we dont get a successful load + char altname[MAX_QPATH]; // copy the name + int len; // + strcpy( altname, name ); // + len = strlen( altname ); // + altname[len-3] = toupper(altname[len-3]); // and try upper case extension for unix systems + altname[len-2] = toupper(altname[len-2]); // + altname[len-1] = toupper(altname[len-1]); // + ri.Printf( PRINT_ALL, "trying %s...\n", altname ); // + R_LoadImage( altname, &pic, &width, &height ); // + if (pic == NULL) { // if that fails + return NULL; // bail + } + } + + image = R_CreateImage( ( char * ) name, pic, width, height, mipmap, allowPicmip, glWrapClampMode ); + ri.Free( pic ); + return image; +} + + +/* +================ +R_CreateDlightImage +================ +*/ +#define DLIGHT_SIZE 16 +static void R_CreateDlightImage( void ) { + int x,y; + byte data[DLIGHT_SIZE][DLIGHT_SIZE][4]; + int b; + + // make a centered inverse-square falloff blob for dynamic lighting + for (x=0 ; x<DLIGHT_SIZE ; x++) { + for (y=0 ; y<DLIGHT_SIZE ; y++) { + float d; + + d = ( DLIGHT_SIZE/2 - 0.5f - x ) * ( DLIGHT_SIZE/2 - 0.5f - x ) + + ( DLIGHT_SIZE/2 - 0.5f - y ) * ( DLIGHT_SIZE/2 - 0.5f - y ); + b = 4000 / d; + if (b > 255) { + b = 255; + } else if ( b < 75 ) { + b = 0; + } + data[y][x][0] = + data[y][x][1] = + data[y][x][2] = b; + data[y][x][3] = 255; + } + } + tr.dlightImage = R_CreateImage("*dlight", (byte *)data, DLIGHT_SIZE, DLIGHT_SIZE, qfalse, qfalse, GL_CLAMP ); +} + + +/* +================= +R_InitFogTable +================= +*/ +void R_InitFogTable( void ) { + int i; + float d; + float exp; + + exp = 0.5; + + for ( i = 0 ; i < FOG_TABLE_SIZE ; i++ ) { + d = pow ( (float)i/(FOG_TABLE_SIZE-1), exp ); + + tr.fogTable[i] = d; + } +} + +/* +================ +R_FogFactor + +Returns a 0.0 to 1.0 fog density value +This is called for each texel of the fog texture on startup +and for each vertex of transparent shaders in fog dynamically +================ +*/ +float R_FogFactor( float s, float t ) { + float d; + + s -= 1.0/512; + if ( s < 0 ) { + return 0; + } + if ( t < 1.0/32 ) { + return 0; + } + if ( t < 31.0/32 ) { + s *= (t - 1.0f/32.0f) / (30.0f/32.0f); + } + + // we need to leave a lot of clamp range + s *= 8; + + if ( s > 1.0 ) { + s = 1.0; + } + + d = tr.fogTable[ (int)(s * (FOG_TABLE_SIZE-1)) ]; + + return d; +} + +/* +================ +R_CreateFogImage +================ +*/ +#define FOG_S 256 +#define FOG_T 32 +static void R_CreateFogImage( void ) { + int x,y; + byte *data; + float g; + float d; + float borderColor[4]; + + data = ri.Hunk_AllocateTempMemory( FOG_S * FOG_T * 4 ); + + g = 2.0; + + // S is distance, T is depth + for (x=0 ; x<FOG_S ; x++) { + for (y=0 ; y<FOG_T ; y++) { + d = R_FogFactor( ( x + 0.5f ) / FOG_S, ( y + 0.5f ) / FOG_T ); + + data[(y*FOG_S+x)*4+0] = + data[(y*FOG_S+x)*4+1] = + data[(y*FOG_S+x)*4+2] = 255; + data[(y*FOG_S+x)*4+3] = 255*d; + } + } + // standard openGL clamping doesn't really do what we want -- it includes + // the border color at the edges. OpenGL 1.2 has clamp-to-edge, which does + // what we want. + tr.fogImage = R_CreateImage("*fog", (byte *)data, FOG_S, FOG_T, qfalse, qfalse, GL_CLAMP ); + ri.Hunk_FreeTempMemory( data ); + + borderColor[0] = 1.0; + borderColor[1] = 1.0; + borderColor[2] = 1.0; + borderColor[3] = 1; + + qglTexParameterfv( GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor ); +} + +/* +================== +R_CreateDefaultImage +================== +*/ +#define DEFAULT_SIZE 16 +static void R_CreateDefaultImage( void ) { + int x; + byte data[DEFAULT_SIZE][DEFAULT_SIZE][4]; + + // the default image will be a box, to allow you to see the mapping coordinates + Com_Memset( data, 32, sizeof( data ) ); + for ( x = 0 ; x < DEFAULT_SIZE ; x++ ) { + data[0][x][0] = + data[0][x][1] = + data[0][x][2] = + data[0][x][3] = 255; + + data[x][0][0] = + data[x][0][1] = + data[x][0][2] = + data[x][0][3] = 255; + + data[DEFAULT_SIZE-1][x][0] = + data[DEFAULT_SIZE-1][x][1] = + data[DEFAULT_SIZE-1][x][2] = + data[DEFAULT_SIZE-1][x][3] = 255; + + data[x][DEFAULT_SIZE-1][0] = + data[x][DEFAULT_SIZE-1][1] = + data[x][DEFAULT_SIZE-1][2] = + data[x][DEFAULT_SIZE-1][3] = 255; + } + tr.defaultImage = R_CreateImage("*default", (byte *)data, DEFAULT_SIZE, DEFAULT_SIZE, qtrue, qfalse, GL_REPEAT ); +} + +/* +================== +R_CreateBuiltinImages +================== +*/ +void R_CreateBuiltinImages( void ) { + int x,y; + byte data[DEFAULT_SIZE][DEFAULT_SIZE][4]; + + R_CreateDefaultImage(); + + // we use a solid white image instead of disabling texturing + Com_Memset( data, 255, sizeof( data ) ); + tr.whiteImage = R_CreateImage("*white", (byte *)data, 8, 8, qfalse, qfalse, GL_REPEAT ); + + // with overbright bits active, we need an image which is some fraction of full color, + // for default lightmaps, etc + for (x=0 ; x<DEFAULT_SIZE ; x++) { + for (y=0 ; y<DEFAULT_SIZE ; y++) { + data[y][x][0] = + data[y][x][1] = + data[y][x][2] = tr.identityLightByte; + data[y][x][3] = 255; + } + } + + tr.identityLightImage = R_CreateImage("*identityLight", (byte *)data, 8, 8, qfalse, qfalse, GL_REPEAT ); + + + for(x=0;x<32;x++) { + // scratchimage is usually used for cinematic drawing + tr.scratchImage[x] = R_CreateImage("*scratch", (byte *)data, DEFAULT_SIZE, DEFAULT_SIZE, qfalse, qtrue, GL_CLAMP ); + } + + R_CreateDlightImage(); + R_CreateFogImage(); +} + + +/* +=============== +R_SetColorMappings +=============== +*/ +void R_SetColorMappings( void ) { + int i, j; + float g; + int inf; + int shift; + + // setup the overbright lighting + tr.overbrightBits = r_overBrightBits->integer; + if ( !glConfig.deviceSupportsGamma ) { + tr.overbrightBits = 0; // need hardware gamma for overbright + } + + // never overbright in windowed mode + if ( !glConfig.isFullscreen ) + { + tr.overbrightBits = 0; + } + + // allow 2 overbright bits in 24 bit, but only 1 in 16 bit + if ( glConfig.colorBits > 16 ) { + if ( tr.overbrightBits > 2 ) { + tr.overbrightBits = 2; + } + } else { + if ( tr.overbrightBits > 1 ) { + tr.overbrightBits = 1; + } + } + if ( tr.overbrightBits < 0 ) { + tr.overbrightBits = 0; + } + + tr.identityLight = 1.0f / ( 1 << tr.overbrightBits ); + tr.identityLightByte = 255 * tr.identityLight; + + + if ( r_intensity->value <= 1 ) { + ri.Cvar_Set( "r_intensity", "1" ); + } + + if ( r_gamma->value < 0.5f ) { + ri.Cvar_Set( "r_gamma", "0.5" ); + } else if ( r_gamma->value > 3.0f ) { + ri.Cvar_Set( "r_gamma", "3.0" ); + } + + g = r_gamma->value; + + shift = tr.overbrightBits; + + for ( i = 0; i < 256; i++ ) { + if ( g == 1 ) { + inf = i; + } else { + inf = 255 * pow ( i/255.0f, 1.0f / g ) + 0.5f; + } + inf <<= shift; + if (inf < 0) { + inf = 0; + } + if (inf > 255) { + inf = 255; + } + s_gammatable[i] = inf; + } + + for (i=0 ; i<256 ; i++) { + j = i * r_intensity->value; + if (j > 255) { + j = 255; + } + s_intensitytable[i] = j; + } + + if ( glConfig.deviceSupportsGamma ) + { + GLimp_SetGamma( s_gammatable, s_gammatable, s_gammatable ); + } +} + +/* +=============== +R_InitImages +=============== +*/ +void R_InitImages( void ) { + Com_Memset(hashTable, 0, sizeof(hashTable)); + // build brightness translation tables + R_SetColorMappings(); + + // create default texture and white texture + R_CreateBuiltinImages(); +} + +/* +=============== +R_DeleteTextures +=============== +*/ +void R_DeleteTextures( void ) { + int i; + + for ( i=0; i<tr.numImages ; i++ ) { + qglDeleteTextures( 1, &tr.images[i]->texnum ); + } + Com_Memset( tr.images, 0, sizeof( tr.images ) ); + + tr.numImages = 0; + + Com_Memset( glState.currenttextures, 0, sizeof( glState.currenttextures ) ); + if ( qglBindTexture ) { + if ( qglActiveTextureARB ) { + GL_SelectTexture( 1 ); + qglBindTexture( GL_TEXTURE_2D, 0 ); + GL_SelectTexture( 0 ); + qglBindTexture( GL_TEXTURE_2D, 0 ); + } else { + qglBindTexture( GL_TEXTURE_2D, 0 ); + } + } +} + +/* +============================================================================ + +SKINS + +============================================================================ +*/ + +/* +================== +CommaParse + +This is unfortunate, but the skin files aren't +compatable with our normal parsing rules. +================== +*/ +static char *CommaParse( char **data_p ) { + int c = 0, len; + char *data; + static char com_token[MAX_TOKEN_CHARS]; + + data = *data_p; + len = 0; + com_token[0] = 0; + + // make sure incoming data is valid + if ( !data ) { + *data_p = NULL; + return com_token; + } + + while ( 1 ) { + // skip whitespace + while( (c = *data) <= ' ') { + if( !c ) { + break; + } + data++; + } + + + c = *data; + + // skip double slash comments + if ( c == '/' && data[1] == '/' ) + { + while (*data && *data != '\n') + data++; + } + // skip /* */ comments + else if ( c=='/' && data[1] == '*' ) + { + while ( *data && ( *data != '*' || data[1] != '/' ) ) + { + data++; + } + if ( *data ) + { + data += 2; + } + } + else + { + break; + } + } + + if ( c == 0 ) { + return ""; + } + + // handle quoted strings + if (c == '\"') + { + data++; + while (1) + { + c = *data++; + if (c=='\"' || !c) + { + com_token[len] = 0; + *data_p = ( char * ) data; + return com_token; + } + if (len < MAX_TOKEN_CHARS) + { + com_token[len] = c; + len++; + } + } + } + + // parse a regular word + do + { + if (len < MAX_TOKEN_CHARS) + { + com_token[len] = c; + len++; + } + data++; + c = *data; + } while (c>32 && c != ',' ); + + if (len == MAX_TOKEN_CHARS) + { +// Com_Printf ("Token exceeded %i chars, discarded.\n", MAX_TOKEN_CHARS); + len = 0; + } + com_token[len] = 0; + + *data_p = ( char * ) data; + return com_token; +} + + +/* +=============== +RE_RegisterSkin + +=============== +*/ +qhandle_t RE_RegisterSkin( const char *name ) { + qhandle_t hSkin; + skin_t *skin; + skinSurface_t *surf; + char *text, *text_p; + char *token; + char surfName[MAX_QPATH]; + + if ( !name || !name[0] ) { + Com_Printf( "Empty name passed to RE_RegisterSkin\n" ); + return 0; + } + + if ( strlen( name ) >= MAX_QPATH ) { + Com_Printf( "Skin name exceeds MAX_QPATH\n" ); + return 0; + } + + + // see if the skin is already loaded + for ( hSkin = 1; hSkin < tr.numSkins ; hSkin++ ) { + skin = tr.skins[hSkin]; + if ( !Q_stricmp( skin->name, name ) ) { + if( skin->numSurfaces == 0 ) { + return 0; // default skin + } + return hSkin; + } + } + + // allocate a new skin + if ( tr.numSkins == MAX_SKINS ) { + ri.Printf( PRINT_WARNING, "WARNING: RE_RegisterSkin( '%s' ) MAX_SKINS hit\n", name ); + return 0; + } + tr.numSkins++; + skin = ri.Hunk_Alloc( sizeof( skin_t ), h_low ); + tr.skins[hSkin] = skin; + Q_strncpyz( skin->name, name, sizeof( skin->name ) ); + skin->numSurfaces = 0; + + // make sure the render thread is stopped + R_SyncRenderThread(); + + // If not a .skin file, load as a single shader + if ( strcmp( name + strlen( name ) - 5, ".skin" ) ) { + skin->numSurfaces = 1; + skin->surfaces[0] = ri.Hunk_Alloc( sizeof(skin->surfaces[0]), h_low ); + skin->surfaces[0]->shader = R_FindShader( name, LIGHTMAP_NONE, qtrue ); + return hSkin; + } + + // load and parse the skin file + ri.FS_ReadFile( name, (void **)&text ); + if ( !text ) { + return 0; + } + + text_p = text; + while ( text_p && *text_p ) { + // get surface name + token = CommaParse( &text_p ); + Q_strncpyz( surfName, token, sizeof( surfName ) ); + + if ( !token[0] ) { + break; + } + // lowercase the surface name so skin compares are faster + Q_strlwr( surfName ); + + if ( *text_p == ',' ) { + text_p++; + } + + if ( strstr( token, "tag_" ) ) { + continue; + } + + // parse the shader name + token = CommaParse( &text_p ); + + surf = skin->surfaces[ skin->numSurfaces ] = ri.Hunk_Alloc( sizeof( *skin->surfaces[0] ), h_low ); + Q_strncpyz( surf->name, surfName, sizeof( surf->name ) ); + surf->shader = R_FindShader( token, LIGHTMAP_NONE, qtrue ); + skin->numSurfaces++; + } + + ri.FS_FreeFile( text ); + + + // never let a skin have 0 shaders + if ( skin->numSurfaces == 0 ) { + return 0; // use default skin + } + + return hSkin; +} + + +/* +=============== +R_InitSkins +=============== +*/ +void R_InitSkins( void ) { + skin_t *skin; + + tr.numSkins = 1; + + // make the default skin have all default shaders + skin = tr.skins[0] = ri.Hunk_Alloc( sizeof( skin_t ), h_low ); + Q_strncpyz( skin->name, "<default skin>", sizeof( skin->name ) ); + skin->numSurfaces = 1; + skin->surfaces[0] = ri.Hunk_Alloc( sizeof( *skin->surfaces ), h_low ); + skin->surfaces[0]->shader = tr.defaultShader; +} + +/* +=============== +R_GetSkinByHandle +=============== +*/ +skin_t *R_GetSkinByHandle( qhandle_t hSkin ) { + if ( hSkin < 1 || hSkin >= tr.numSkins ) { + return tr.skins[0]; + } + return tr.skins[ hSkin ]; +} + +/* +=============== +R_SkinList_f +=============== +*/ +void R_SkinList_f( void ) { + int i, j; + skin_t *skin; + + ri.Printf (PRINT_ALL, "------------------\n"); + + for ( i = 0 ; i < tr.numSkins ; i++ ) { + skin = tr.skins[i]; + + ri.Printf( PRINT_ALL, "%3i:%s\n", i, skin->name ); + for ( j = 0 ; j < skin->numSurfaces ; j++ ) { + ri.Printf( PRINT_ALL, " %s = %s\n", + skin->surfaces[j]->name, skin->surfaces[j]->shader->name ); + } + } + ri.Printf (PRINT_ALL, "------------------\n"); +} + |