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Diffstat (limited to 'src/renderergl1/tr_image.c')
| -rw-r--r-- | src/renderergl1/tr_image.c | 1608 |
1 files changed, 1608 insertions, 0 deletions
diff --git a/src/renderergl1/tr_image.c b/src/renderergl1/tr_image.c new file mode 100644 index 00000000..3338a25b --- /dev/null +++ b/src/renderergl1/tr_image.c @@ -0,0 +1,1608 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2009 Darklegion Development + +This file is part of Tremulous. + +Tremulous 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. + +Tremulous 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 Tremulous; 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" + +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: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + 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_TO_EDGE: + 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( r_greyscale->integer ) + { + for ( i = 0; i < c; i++ ) + { + byte luma = LUMA(scan[i*4], scan[i*4 + 1], scan[i*4 + 2]); + scan[i*4] = luma; + scan[i*4 + 1] = luma; + scan[i*4 + 2] = luma; + } + } + else if( r_greyscale->value ) + { + for ( i = 0; i < c; i++ ) + { + float luma = LUMA(scan[i*4], scan[i*4 + 1], scan[i*4 + 2]); + scan[i*4] = LERP(scan[i*4], luma, r_greyscale->value); + scan[i*4 + 1] = LERP(scan[i*4 + 1], luma, r_greyscale->value); + scan[i*4 + 2] = LERP(scan[i*4 + 2], luma, r_greyscale->value); + } + } + + if(lightMap) + { + if(r_greyscale->integer) + internalFormat = GL_LUMINANCE; + else + internalFormat = GL_RGB; + } + else + { + 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(r_greyscale->integer) + { + if(r_texturebits->integer == 16) + internalFormat = GL_LUMINANCE8; + else if(r_texturebits->integer == 32) + internalFormat = GL_LUMINANCE16; + else + internalFormat = GL_LUMINANCE; + } + else + { + if ( glConfig.textureCompression == TC_S3TC_ARB ) + { + internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; + } + else 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 = GL_RGB; + } + } + } + else if ( samples == 4 ) + { + if(r_greyscale->integer) + { + if(r_texturebits->integer == 16) + internalFormat = GL_LUMINANCE8_ALPHA8; + else if(r_texturebits->integer == 32) + internalFormat = GL_LUMINANCE16_ALPHA16; + else + internalFormat = GL_LUMINANCE_ALPHA; + } + else + { + if ( r_texturebits->integer == 16 ) + { + internalFormat = GL_RGBA4; + } + else if ( r_texturebits->integer == 32 ) + { + internalFormat = GL_RGBA8; + } + else + { + internalFormat = GL_RGBA; + } + } + } + } + + // 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) + { + if ( glConfig.textureFilterAnisotropic ) + qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, + (GLint)Com_Clamp( 1, glConfig.maxAnisotropy, r_ext_max_anisotropy->integer ) ); + + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); + qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); + } + else + { + if ( glConfig.textureFilterAnisotropic ) + qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1 ); + + 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", name); + } + if ( !strncmp( name, "*lightmap", 9 ) ) { + isLightmap = qtrue; + } + + if ( tr.numImages == MAX_DRAWIMAGES ) { + ri.Error( ERR_DROP, "R_CreateImage: MAX_DRAWIMAGES hit"); + } + + 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; +} + +//=================================================================== + +typedef struct +{ + char *ext; + void (*ImageLoader)( const char *, unsigned char **, int *, int * ); +} imageExtToLoaderMap_t; + +// Note that the ordering indicates the order of preference used +// when there are multiple images of different formats available +static imageExtToLoaderMap_t imageLoaders[ ] = +{ + { "tga", R_LoadTGA }, + { "jpg", R_LoadJPG }, + { "jpeg", R_LoadJPG }, + { "png", R_LoadPNG }, + { "pcx", R_LoadPCX }, + { "bmp", R_LoadBMP } +}; + +static int numImageLoaders = ARRAY_LEN( imageLoaders ); + +/* +================= +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 ) +{ + qboolean orgNameFailed = qfalse; + int orgLoader = -1; + int i; + char localName[ MAX_QPATH ]; + const char *ext; + char *altName; + + *pic = NULL; + *width = 0; + *height = 0; + + Q_strncpyz( localName, name, MAX_QPATH ); + + ext = COM_GetExtension( localName ); + + if( *ext ) + { + // Look for the correct loader and use it + for( i = 0; i < numImageLoaders; i++ ) + { + if( !Q_stricmp( ext, imageLoaders[ i ].ext ) ) + { + // Load + imageLoaders[ i ].ImageLoader( localName, pic, width, height ); + break; + } + } + + // A loader was found + if( i < numImageLoaders ) + { + if( *pic == NULL ) + { + // Loader failed, most likely because the file isn't there; + // try again without the extension + orgNameFailed = qtrue; + orgLoader = i; + COM_StripExtension( name, localName, MAX_QPATH ); + } + else + { + // Something loaded + return; + } + } + } + + // Try and find a suitable match using all + // the image formats supported + for( i = 0; i < numImageLoaders; i++ ) + { + if (i == orgLoader) + continue; + + altName = va( "%s.%s", localName, imageLoaders[ i ].ext ); + + // Load + imageLoaders[ i ].ImageLoader( altName, pic, width, height ); + + if( *pic ) + { + if( orgNameFailed ) + { + ri.Printf( PRINT_DEVELOPER, "WARNING: %s not present, using %s instead\n", + name, altName ); + } + + break; + } + } +} + + +/* +=============== +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 ) { + return NULL; + } + + 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_TO_EDGE ); +} + + +/* +================= +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 d; + float borderColor[4]; + + data = ri.Hunk_AllocateTempMemory( FOG_S * FOG_T * 4 ); + + // 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_TO_EDGE ); + 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_TO_EDGE ); + } + + 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 ( 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) + { +// ri.Printf (PRINT_DEVELOPER, "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; + union { + char *c; + void *v; + } text; + char *text_p; + char *token; + char surfName[MAX_QPATH]; + + if ( !name || !name[0] ) { + ri.Printf( PRINT_DEVELOPER, "Empty name passed to RE_RegisterSkin\n" ); + return 0; + } + + if ( strlen( name ) >= MAX_QPATH ) { + ri.Printf( PRINT_DEVELOPER, "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; + + R_IssuePendingRenderCommands(); + + // 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, &text.v ); + if ( !text.c ) { + return 0; + } + + text_p = text.c; + 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.v ); + + + // 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"); +} + |