src/mesa/drivers/dri/i965/intel_state.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "glheader.h"
  30 #include "context.h"
  31 #include "macros.h"
  32 #include "enums.h"
  33 #include "colormac.h"
  34 #include "dd.h"
  35
  36 #include "intel_screen.h"
  37 #include "intel_context.h"
  38 #include "intel_regions.h"
  39 #include "swrast/swrast.h"
  40
  41 int intel_translate_shadow_compare_func( GLenum func )
  42 {
  43    switch(func) {
  44    case GL_NEVER:
  45        return COMPAREFUNC_ALWAYS;
  46    case GL_LESS:
  47        return COMPAREFUNC_LEQUAL;
  48    case GL_LEQUAL:
  49        return COMPAREFUNC_LESS;
  50    case GL_GREATER:
  51        return COMPAREFUNC_GEQUAL;
  52    case GL_GEQUAL:
  53       return COMPAREFUNC_GREATER;
  54    case GL_NOTEQUAL:
  55       return COMPAREFUNC_EQUAL;
  56    case GL_EQUAL:
  57       return COMPAREFUNC_NOTEQUAL;
  58    case GL_ALWAYS:
  59        return COMPAREFUNC_NEVER;
  60    }
  61
  62    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  63    return COMPAREFUNC_NEVER;
  64 }
  65
  66 int intel_translate_compare_func( GLenum func )
  67 {
  68    switch(func) {
  69    case GL_NEVER:
  70       return COMPAREFUNC_NEVER;
  71    case GL_LESS:
  72       return COMPAREFUNC_LESS;
  73    case GL_LEQUAL:
  74       return COMPAREFUNC_LEQUAL;
  75    case GL_GREATER:
  76       return COMPAREFUNC_GREATER;
  77    case GL_GEQUAL:
  78       return COMPAREFUNC_GEQUAL;
  79    case GL_NOTEQUAL:
  80       return COMPAREFUNC_NOTEQUAL;
  81    case GL_EQUAL:
  82       return COMPAREFUNC_EQUAL;
  83    case GL_ALWAYS:
  84       return COMPAREFUNC_ALWAYS;
  85    }
  86
  87    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  88    return COMPAREFUNC_ALWAYS;
  89 }
  90
  91 int intel_translate_stencil_op( GLenum op )
  92 {
  93    switch(op) {
  94    case GL_KEEP:
  95       return STENCILOP_KEEP;
  96    case GL_ZERO:
  97       return STENCILOP_ZERO;
  98    case GL_REPLACE:
  99       return STENCILOP_REPLACE;
 100    case GL_INCR:
 101       return STENCILOP_INCRSAT;
 102    case GL_DECR:
 103       return STENCILOP_DECRSAT;
 104    case GL_INCR_WRAP:
 105       return STENCILOP_INCR;
 106    case GL_DECR_WRAP:
 107       return STENCILOP_DECR;
 108    case GL_INVERT:
 109       return STENCILOP_INVERT;
 110    default:
 111       return STENCILOP_ZERO;
 112    }
 113 }
 114
 115 int intel_translate_blend_factor( GLenum factor )
 116 {
 117    switch(factor) {
 118    case GL_ZERO:
 119       return BLENDFACT_ZERO;
 120    case GL_SRC_ALPHA:
 121       return BLENDFACT_SRC_ALPHA;
 122    case GL_ONE:
 123       return BLENDFACT_ONE;
 124    case GL_SRC_COLOR:
 125       return BLENDFACT_SRC_COLR;
 126    case GL_ONE_MINUS_SRC_COLOR:
 127       return BLENDFACT_INV_SRC_COLR;
 128    case GL_DST_COLOR:
 129       return BLENDFACT_DST_COLR;
 130    case GL_ONE_MINUS_DST_COLOR:
 131       return BLENDFACT_INV_DST_COLR;
 132    case GL_ONE_MINUS_SRC_ALPHA:
 133       return BLENDFACT_INV_SRC_ALPHA;
 134    case GL_DST_ALPHA:
 135       return BLENDFACT_DST_ALPHA;
 136    case GL_ONE_MINUS_DST_ALPHA:
 137       return BLENDFACT_INV_DST_ALPHA;
 138    case GL_SRC_ALPHA_SATURATE:
 139       return BLENDFACT_SRC_ALPHA_SATURATE;
 140    case GL_CONSTANT_COLOR:
 141       return BLENDFACT_CONST_COLOR;
 142    case GL_ONE_MINUS_CONSTANT_COLOR:
 143       return BLENDFACT_INV_CONST_COLOR;
 144    case GL_CONSTANT_ALPHA:
 145       return BLENDFACT_CONST_ALPHA;
 146    case GL_ONE_MINUS_CONSTANT_ALPHA:
 147       return BLENDFACT_INV_CONST_ALPHA;
 148    }
 149
 150    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor);
 151    return BLENDFACT_ZERO;
 152 }
 153
 154 int intel_translate_logic_op( GLenum opcode )
 155 {
 156    switch(opcode) {
 157    case GL_CLEAR:
 158       return LOGICOP_CLEAR;
 159    case GL_AND:
 160       return LOGICOP_AND;
 161    case GL_AND_REVERSE:
 162       return LOGICOP_AND_RVRSE;
 163    case GL_COPY:
 164       return LOGICOP_COPY;
 165    case GL_COPY_INVERTED:
 166       return LOGICOP_COPY_INV;
 167    case GL_AND_INVERTED:
 168       return LOGICOP_AND_INV;
 169    case GL_NOOP:
 170       return LOGICOP_NOOP;
 171    case GL_XOR:
 172       return LOGICOP_XOR;
 173    case GL_OR:
 174       return LOGICOP_OR;
 175    case GL_OR_INVERTED:
 176       return LOGICOP_OR_INV;
 177    case GL_NOR:
 178       return LOGICOP_NOR;
 179    case GL_EQUIV:
 180       return LOGICOP_EQUIV;
 181    case GL_INVERT:
 182       return LOGICOP_INV;
 183    case GL_OR_REVERSE:
 184       return LOGICOP_OR_RVRSE;
 185    case GL_NAND:
 186       return LOGICOP_NAND;
 187    case GL_SET:
 188       return LOGICOP_SET;
 189    default:
 190       return LOGICOP_SET;
 191    }
 192 }
 193
 194
 195 static void intelClearColor(GLcontext *ctx, const GLfloat color[4])
 196 {
 197    struct intel_context *intel = intel_context(ctx);
 198
 199    UNCLAMPED_FLOAT_TO_RGBA_CHAN(intel->clear_chan, color);
 200
 201    intel->ClearColor8888 = INTEL_PACKCOLOR8888(intel->clear_chan[0],
 202                                                intel->clear_chan[1],
 203                                                intel->clear_chan[2],
 204                                                intel->clear_chan[3]);
 205    intel->ClearColor565 = INTEL_PACKCOLOR565(intel->clear_chan[0],
 206                                              intel->clear_chan[1],
 207                                              intel->clear_chan[2]);
 208 }
 209
 210
 211
 212 /* Fallback to swrast for select and feedback.
 213  */
 214 static void intelRenderMode( GLcontext *ctx, GLenum mode )
 215 {
 216    struct intel_context *intel = intel_context(ctx);
 217    FALLBACK( intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER) );
 218 }
 219
 220
 221 void intelInitStateFuncs( struct dd_function_table *functions )
 222 {
 223    functions->RenderMode = intelRenderMode;
 224    functions->ClearColor = intelClearColor;
 225 }