src/mesa/drivers/dri/i915/intel_state.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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/dd.h"
  34
  35 #include "intel_screen.h"
  36 #include "intel_context.h"
  37
  38 int
  39 intel_translate_shadow_compare_func(GLenum func)
  40 {
  41    switch (func) {
  42    case GL_NEVER:
  43        return COMPAREFUNC_ALWAYS;
  44    case GL_LESS:
  45        return COMPAREFUNC_LEQUAL;
  46    case GL_LEQUAL:
  47        return COMPAREFUNC_LESS;
  48    case GL_GREATER:
  49        return COMPAREFUNC_GEQUAL;
  50    case GL_GEQUAL:
  51       return COMPAREFUNC_GREATER;
  52    case GL_NOTEQUAL:
  53       return COMPAREFUNC_EQUAL;
  54    case GL_EQUAL:
  55       return COMPAREFUNC_NOTEQUAL;
  56    case GL_ALWAYS:
  57        return COMPAREFUNC_NEVER;
  58    }
  59
  60    fprintf(stderr, "Unknown value in %s: %x\n", __func__, func);
  61    return COMPAREFUNC_NEVER;
  62 }
  63
  64 int
  65 intel_translate_compare_func(GLenum func)
  66 {
  67    switch (func) {
  68    case GL_NEVER:
  69       return COMPAREFUNC_NEVER;
  70    case GL_LESS:
  71       return COMPAREFUNC_LESS;
  72    case GL_LEQUAL:
  73       return COMPAREFUNC_LEQUAL;
  74    case GL_GREATER:
  75       return COMPAREFUNC_GREATER;
  76    case GL_GEQUAL:
  77       return COMPAREFUNC_GEQUAL;
  78    case GL_NOTEQUAL:
  79       return COMPAREFUNC_NOTEQUAL;
  80    case GL_EQUAL:
  81       return COMPAREFUNC_EQUAL;
  82    case GL_ALWAYS:
  83       return COMPAREFUNC_ALWAYS;
  84    }
  85
  86    fprintf(stderr, "Unknown value in %s: %x\n", __func__, func);
  87    return COMPAREFUNC_ALWAYS;
  88 }
  89
  90 int
  91 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
 116 intel_translate_blend_factor(GLenum factor)
 117 {
 118    switch (factor) {
 119    case GL_ZERO:
 120       return BLENDFACT_ZERO;
 121    case GL_SRC_ALPHA:
 122       return BLENDFACT_SRC_ALPHA;
 123    case GL_ONE:
 124       return BLENDFACT_ONE;
 125    case GL_SRC_COLOR:
 126       return BLENDFACT_SRC_COLR;
 127    case GL_ONE_MINUS_SRC_COLOR:
 128       return BLENDFACT_INV_SRC_COLR;
 129    case GL_DST_COLOR:
 130       return BLENDFACT_DST_COLR;
 131    case GL_ONE_MINUS_DST_COLOR:
 132       return BLENDFACT_INV_DST_COLR;
 133    case GL_ONE_MINUS_SRC_ALPHA:
 134       return BLENDFACT_INV_SRC_ALPHA;
 135    case GL_DST_ALPHA:
 136       return BLENDFACT_DST_ALPHA;
 137    case GL_ONE_MINUS_DST_ALPHA:
 138       return BLENDFACT_INV_DST_ALPHA;
 139    case GL_SRC_ALPHA_SATURATE:
 140       return BLENDFACT_SRC_ALPHA_SATURATE;
 141    case GL_CONSTANT_COLOR:
 142       return BLENDFACT_CONST_COLOR;
 143    case GL_ONE_MINUS_CONSTANT_COLOR:
 144       return BLENDFACT_INV_CONST_COLOR;
 145    case GL_CONSTANT_ALPHA:
 146       return BLENDFACT_CONST_ALPHA;
 147    case GL_ONE_MINUS_CONSTANT_ALPHA:
 148       return BLENDFACT_INV_CONST_ALPHA;
 149    }
 150
 151    fprintf(stderr, "Unknown value in %s: %x\n", __func__, factor);
 152    return BLENDFACT_ZERO;
 153 }