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 "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 "brw_context.h"
  38 #include "brw_defines.h"
  39
  40 int
  41 intel_translate_shadow_compare_func(GLenum func)
  42 {
  43    switch (func) {
  44    case GL_NEVER:
  45        return BRW_COMPAREFUNCTION_ALWAYS;
  46    case GL_LESS:
  47        return BRW_COMPAREFUNCTION_LEQUAL;
  48    case GL_LEQUAL:
  49        return BRW_COMPAREFUNCTION_LESS;
  50    case GL_GREATER:
  51        return BRW_COMPAREFUNCTION_GEQUAL;
  52    case GL_GEQUAL:
  53       return BRW_COMPAREFUNCTION_GREATER;
  54    case GL_NOTEQUAL:
  55       return BRW_COMPAREFUNCTION_EQUAL;
  56    case GL_EQUAL:
  57       return BRW_COMPAREFUNCTION_NOTEQUAL;
  58    case GL_ALWAYS:
  59        return BRW_COMPAREFUNCTION_NEVER;
  60    }
  61
  62    assert(!"Invalid shadow comparison function.");
  63    return BRW_COMPAREFUNCTION_NEVER;
  64 }
  65
  66 int
  67 intel_translate_compare_func(GLenum func)
  68 {
  69    switch (func) {
  70    case GL_NEVER:
  71       return BRW_COMPAREFUNCTION_NEVER;
  72    case GL_LESS:
  73       return BRW_COMPAREFUNCTION_LESS;
  74    case GL_LEQUAL:
  75       return BRW_COMPAREFUNCTION_LEQUAL;
  76    case GL_GREATER:
  77       return BRW_COMPAREFUNCTION_GREATER;
  78    case GL_GEQUAL:
  79       return BRW_COMPAREFUNCTION_GEQUAL;
  80    case GL_NOTEQUAL:
  81       return BRW_COMPAREFUNCTION_NOTEQUAL;
  82    case GL_EQUAL:
  83       return BRW_COMPAREFUNCTION_EQUAL;
  84    case GL_ALWAYS:
  85       return BRW_COMPAREFUNCTION_ALWAYS;
  86    }
  87
  88    assert(!"Invalid comparison function.");
  89    return BRW_COMPAREFUNCTION_ALWAYS;
  90 }
  91
  92 int
  93 intel_translate_stencil_op(GLenum op)
  94 {
  95    switch (op) {
  96    case GL_KEEP:
  97       return BRW_STENCILOP_KEEP;
  98    case GL_ZERO:
  99       return BRW_STENCILOP_ZERO;
 100    case GL_REPLACE:
 101       return BRW_STENCILOP_REPLACE;
 102    case GL_INCR:
 103       return BRW_STENCILOP_INCRSAT;
 104    case GL_DECR:
 105       return BRW_STENCILOP_DECRSAT;
 106    case GL_INCR_WRAP:
 107       return BRW_STENCILOP_INCR;
 108    case GL_DECR_WRAP:
 109       return BRW_STENCILOP_DECR;
 110    case GL_INVERT:
 111       return BRW_STENCILOP_INVERT;
 112    default:
 113       return BRW_STENCILOP_ZERO;
 114    }
 115 }
 116
 117 int
 118 intel_translate_logic_op(GLenum opcode)
 119 {
 120    switch (opcode) {
 121    case GL_CLEAR:
 122       return BRW_LOGICOPFUNCTION_CLEAR;
 123    case GL_AND:
 124       return BRW_LOGICOPFUNCTION_AND;
 125    case GL_AND_REVERSE:
 126       return BRW_LOGICOPFUNCTION_AND_REVERSE;
 127    case GL_COPY:
 128       return BRW_LOGICOPFUNCTION_COPY;
 129    case GL_COPY_INVERTED:
 130       return BRW_LOGICOPFUNCTION_COPY_INVERTED;
 131    case GL_AND_INVERTED:
 132       return BRW_LOGICOPFUNCTION_AND_INVERTED;
 133    case GL_NOOP:
 134       return BRW_LOGICOPFUNCTION_NOOP;
 135    case GL_XOR:
 136       return BRW_LOGICOPFUNCTION_XOR;
 137    case GL_OR:
 138       return BRW_LOGICOPFUNCTION_OR;
 139    case GL_OR_INVERTED:
 140       return BRW_LOGICOPFUNCTION_OR_INVERTED;
 141    case GL_NOR:
 142       return BRW_LOGICOPFUNCTION_NOR;
 143    case GL_EQUIV:
 144       return BRW_LOGICOPFUNCTION_EQUIV;
 145    case GL_INVERT:
 146       return BRW_LOGICOPFUNCTION_INVERT;
 147    case GL_OR_REVERSE:
 148       return BRW_LOGICOPFUNCTION_OR_REVERSE;
 149    case GL_NAND:
 150       return BRW_LOGICOPFUNCTION_NAND;
 151    case GL_SET:
 152       return BRW_LOGICOPFUNCTION_SET;
 153    default:
 154       return BRW_LOGICOPFUNCTION_SET;
 155    }
 156 }