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  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.  
  39. int
  40. intel_translate_shadow_compare_func(GLenum func)
  41. {
  42.    switch (func) {
  43.    case GL_NEVER:
  44.        return COMPAREFUNC_ALWAYS;
  45.    case GL_LESS:
  46.        return COMPAREFUNC_LEQUAL;
  47.    case GL_LEQUAL:
  48.        return COMPAREFUNC_LESS;
  49.    case GL_GREATER:
  50.        return COMPAREFUNC_GEQUAL;
  51.    case GL_GEQUAL:
  52.       return COMPAREFUNC_GREATER;
  53.    case GL_NOTEQUAL:
  54.       return COMPAREFUNC_EQUAL;
  55.    case GL_EQUAL:
  56.       return COMPAREFUNC_NOTEQUAL;
  57.    case GL_ALWAYS:
  58.        return COMPAREFUNC_NEVER;
  59.    }
  60.  
  61.    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
  62.    return COMPAREFUNC_NEVER;
  63. }
  64.  
  65. int
  66. 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
  92. intel_translate_stencil_op(GLenum op)
  93. {
  94.    switch (op) {
  95.    case GL_KEEP:
  96.       return STENCILOP_KEEP;
  97.    case GL_ZERO:
  98.       return STENCILOP_ZERO;
  99.    case GL_REPLACE:
  100.       return STENCILOP_REPLACE;
  101.    case GL_INCR:
  102.       return STENCILOP_INCRSAT;
  103.    case GL_DECR:
  104.       return STENCILOP_DECRSAT;
  105.    case GL_INCR_WRAP:
  106.       return STENCILOP_INCR;
  107.    case GL_DECR_WRAP:
  108.       return STENCILOP_DECR;
  109.    case GL_INVERT:
  110.       return STENCILOP_INVERT;
  111.    default:
  112.       return STENCILOP_ZERO;
  113.    }
  114. }
  115.  
  116. int
  117. intel_translate_blend_factor(GLenum factor)
  118. {
  119.    switch (factor) {
  120.    case GL_ZERO:
  121.       return BLENDFACT_ZERO;
  122.    case GL_SRC_ALPHA:
  123.       return BLENDFACT_SRC_ALPHA;
  124.    case GL_ONE:
  125.       return BLENDFACT_ONE;
  126.    case GL_SRC_COLOR:
  127.       return BLENDFACT_SRC_COLR;
  128.    case GL_ONE_MINUS_SRC_COLOR:
  129.       return BLENDFACT_INV_SRC_COLR;
  130.    case GL_DST_COLOR:
  131.       return BLENDFACT_DST_COLR;
  132.    case GL_ONE_MINUS_DST_COLOR:
  133.       return BLENDFACT_INV_DST_COLR;
  134.    case GL_ONE_MINUS_SRC_ALPHA:
  135.       return BLENDFACT_INV_SRC_ALPHA;
  136.    case GL_DST_ALPHA:
  137.       return BLENDFACT_DST_ALPHA;
  138.    case GL_ONE_MINUS_DST_ALPHA:
  139.       return BLENDFACT_INV_DST_ALPHA;
  140.    case GL_SRC_ALPHA_SATURATE:
  141.       return BLENDFACT_SRC_ALPHA_SATURATE;
  142.    case GL_CONSTANT_COLOR:
  143.       return BLENDFACT_CONST_COLOR;
  144.    case GL_ONE_MINUS_CONSTANT_COLOR:
  145.       return BLENDFACT_INV_CONST_COLOR;
  146.    case GL_CONSTANT_ALPHA:
  147.       return BLENDFACT_CONST_ALPHA;
  148.    case GL_ONE_MINUS_CONSTANT_ALPHA:
  149.       return BLENDFACT_INV_CONST_ALPHA;
  150.    }
  151.  
  152.    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor);
  153.    return BLENDFACT_ZERO;
  154. }
  155.  
  156. int
  157. intel_translate_logic_op(GLenum opcode)
  158. {
  159.    switch (opcode) {
  160.    case GL_CLEAR:
  161.       return LOGICOP_CLEAR;
  162.    case GL_AND:
  163.       return LOGICOP_AND;
  164.    case GL_AND_REVERSE:
  165.       return LOGICOP_AND_RVRSE;
  166.    case GL_COPY:
  167.       return LOGICOP_COPY;
  168.    case GL_COPY_INVERTED:
  169.       return LOGICOP_COPY_INV;
  170.    case GL_AND_INVERTED:
  171.       return LOGICOP_AND_INV;
  172.    case GL_NOOP:
  173.       return LOGICOP_NOOP;
  174.    case GL_XOR:
  175.       return LOGICOP_XOR;
  176.    case GL_OR:
  177.       return LOGICOP_OR;
  178.    case GL_OR_INVERTED:
  179.       return LOGICOP_OR_INV;
  180.    case GL_NOR:
  181.       return LOGICOP_NOR;
  182.    case GL_EQUIV:
  183.       return LOGICOP_EQUIV;
  184.    case GL_INVERT:
  185.       return LOGICOP_INV;
  186.    case GL_OR_REVERSE:
  187.       return LOGICOP_OR_RVRSE;
  188.    case GL_NAND:
  189.       return LOGICOP_NAND;
  190.    case GL_SET:
  191.       return LOGICOP_SET;
  192.    default:
  193.       return LOGICOP_SET;
  194.    }
  195. }
  196.