src/mesa/drivers/dri/intel/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 "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/macros.h"
  32 #include "main/enums.h"
  33 #include "main/colormac.h"
  34 #include "main/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
  42 intel_translate_shadow_compare_func(GLenum func)
  43 {
  44    switch (func) {
  45    case GL_NEVER:
  46        return COMPAREFUNC_ALWAYS;
  47    case GL_LESS:
  48        return COMPAREFUNC_LEQUAL;
  49    case GL_LEQUAL:
  50        return COMPAREFUNC_LESS;
  51    case GL_GREATER:
  52        return COMPAREFUNC_GEQUAL;
  53    case GL_GEQUAL:
  54       return COMPAREFUNC_GREATER;
  55    case GL_NOTEQUAL:
  56       return COMPAREFUNC_EQUAL;
  57    case GL_EQUAL:
  58       return COMPAREFUNC_NOTEQUAL;
  59    case GL_ALWAYS:
  60        return COMPAREFUNC_NEVER;
  61    }
  62
  63    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  64    return COMPAREFUNC_NEVER;
  65 }
  66
  67 int
  68 intel_translate_compare_func(GLenum func)
  69 {
  70    switch (func) {
  71    case GL_NEVER:
  72       return COMPAREFUNC_NEVER;
  73    case GL_LESS:
  74       return COMPAREFUNC_LESS;
  75    case GL_LEQUAL:
  76       return COMPAREFUNC_LEQUAL;
  77    case GL_GREATER:
  78       return COMPAREFUNC_GREATER;
  79    case GL_GEQUAL:
  80       return COMPAREFUNC_GEQUAL;
  81    case GL_NOTEQUAL:
  82       return COMPAREFUNC_NOTEQUAL;
  83    case GL_EQUAL:
  84       return COMPAREFUNC_EQUAL;
  85    case GL_ALWAYS:
  86       return COMPAREFUNC_ALWAYS;
  87    }
  88
  89    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  90    return COMPAREFUNC_ALWAYS;
  91 }
  92
  93 int
  94 intel_translate_stencil_op(GLenum op)
  95 {
  96    switch (op) {
  97    case GL_KEEP:
  98       return STENCILOP_KEEP;
  99    case GL_ZERO:
 100       return STENCILOP_ZERO;
 101    case GL_REPLACE:
 102       return STENCILOP_REPLACE;
 103    case GL_INCR:
 104       return STENCILOP_INCRSAT;
 105    case GL_DECR:
 106       return STENCILOP_DECRSAT;
 107    case GL_INCR_WRAP:
 108       return STENCILOP_INCR;
 109    case GL_DECR_WRAP:
 110       return STENCILOP_DECR;
 111    case GL_INVERT:
 112       return STENCILOP_INVERT;
 113    default:
 114       return STENCILOP_ZERO;
 115    }
 116 }
 117
 118 int
 119 intel_translate_blend_factor(GLenum factor)
 120 {
 121    switch (factor) {
 122    case GL_ZERO:
 123       return BLENDFACT_ZERO;
 124    case GL_SRC_ALPHA:
 125       return BLENDFACT_SRC_ALPHA;
 126    case GL_ONE:
 127       return BLENDFACT_ONE;
 128    case GL_SRC_COLOR:
 129       return BLENDFACT_SRC_COLR;
 130    case GL_ONE_MINUS_SRC_COLOR:
 131       return BLENDFACT_INV_SRC_COLR;
 132    case GL_DST_COLOR:
 133       return BLENDFACT_DST_COLR;
 134    case GL_ONE_MINUS_DST_COLOR:
 135       return BLENDFACT_INV_DST_COLR;
 136    case GL_ONE_MINUS_SRC_ALPHA:
 137       return BLENDFACT_INV_SRC_ALPHA;
 138    case GL_DST_ALPHA:
 139       return BLENDFACT_DST_ALPHA;
 140    case GL_ONE_MINUS_DST_ALPHA:
 141       return BLENDFACT_INV_DST_ALPHA;
 142    case GL_SRC_ALPHA_SATURATE:
 143       return BLENDFACT_SRC_ALPHA_SATURATE;
 144    case GL_CONSTANT_COLOR:
 145       return BLENDFACT_CONST_COLOR;
 146    case GL_ONE_MINUS_CONSTANT_COLOR:
 147       return BLENDFACT_INV_CONST_COLOR;
 148    case GL_CONSTANT_ALPHA:
 149       return BLENDFACT_CONST_ALPHA;
 150    case GL_ONE_MINUS_CONSTANT_ALPHA:
 151       return BLENDFACT_INV_CONST_ALPHA;
 152    }
 153
 154    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor);
 155    return BLENDFACT_ZERO;
 156 }
 157
 158 int
 159 intel_translate_logic_op(GLenum opcode)
 160 {
 161    switch (opcode) {
 162    case GL_CLEAR:
 163       return LOGICOP_CLEAR;
 164    case GL_AND:
 165       return LOGICOP_AND;
 166    case GL_AND_REVERSE:
 167       return LOGICOP_AND_RVRSE;
 168    case GL_COPY:
 169       return LOGICOP_COPY;
 170    case GL_COPY_INVERTED:
 171       return LOGICOP_COPY_INV;
 172    case GL_AND_INVERTED:
 173       return LOGICOP_AND_INV;
 174    case GL_NOOP:
 175       return LOGICOP_NOOP;
 176    case GL_XOR:
 177       return LOGICOP_XOR;
 178    case GL_OR:
 179       return LOGICOP_OR;
 180    case GL_OR_INVERTED:
 181       return LOGICOP_OR_INV;
 182    case GL_NOR:
 183       return LOGICOP_NOR;
 184    case GL_EQUIV:
 185       return LOGICOP_EQUIV;
 186    case GL_INVERT:
 187       return LOGICOP_INV;
 188    case GL_OR_REVERSE:
 189       return LOGICOP_OR_RVRSE;
 190    case GL_NAND:
 191       return LOGICOP_NAND;
 192    case GL_SET:
 193       return LOGICOP_SET;
 194    default:
 195       return LOGICOP_SET;
 196    }
 197 }
 198
 199 /* Fallback to swrast for select and feedback.
 200  */
 201 static void
 202 intelRenderMode(GLcontext *ctx, GLenum mode)
 203 {
 204    struct intel_context *intel = intel_context(ctx);
 205    FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER));
 206 }
 207
 208
 209 void
 210 intelInitStateFuncs(struct dd_function_table *functions)
 211 {
 212    functions->RenderMode = intelRenderMode;
 213 }