diff options
Diffstat (limited to 'code/renderer/tr_image.c')
| -rwxr-xr-x | code/renderer/tr_image.c | 2520 |
1 files changed, 2520 insertions, 0 deletions
diff --git a/code/renderer/tr_image.c b/code/renderer/tr_image.c new file mode 100755 index 0000000..11e7913 --- /dev/null +++ b/code/renderer/tr_image.c @@ -0,0 +1,2520 @@ +/*
+===========================================================================
+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 Foobar; 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, 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 ( 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;
+ int 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;
+ }
+
+ 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)
+{
+ int 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++;
+ targa_header.colormap_type = *buf_p++;
+ targa_header.image_type = *buf_p++;
+
+ targa_header.colormap_index = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.colormap_length = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.colormap_size = *buf_p++;
+ targa_header.x_origin = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.y_origin = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.width = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.height = LittleShort ( *(short *)buf_p );
+ buf_p += 2;
+ targa_header.pixel_size = *buf_p++;
+ targa_header.attributes = *buf_p++;
+
+ 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;
+
+ if (width)
+ *width = columns;
+ if (height)
+ *height = rows;
+
+ targa_rgba = ri.Malloc (numPixels*4);
+ *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;
+ /* 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 */
+ int row_stride; /* physical row width in output buffer */
+ unsigned char *out;
+ byte *fbuffer;
+ byte *bbuf;
+
+ /* 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 */
+ row_stride = cinfo.output_width * cinfo.output_components;
+
+ out = ri.Malloc(cinfo.output_width*cinfo.output_height*cinfo.output_components);
+
+ *pic = out;
+ *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.
+ */
+ bbuf = ((out+(row_stride*cinfo.output_scanline)));
+ buffer = &bbuf;
+ (void) jpeg_read_scanlines(&cinfo, buffer, 1);
+ }
+
+ // clear all the alphas to 255
+ {
+ int i, j;
+ byte *buf;
+
+ buf = *pic;
+
+ j = cinfo.output_width * cinfo.output_height * 4;
+ for ( i = 3 ; i < j ; i+=4 ) {
+ buf[i] = 255;
+ }
+ }
+
+ /* 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");
+}
+
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