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

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #include "brw_util.h"
  34 #include "mtypes.h"
  35 #include "shader/program.h"
  36 #include "brw_defines.h"
  37
  38 GLuint brw_count_bits( GLuint val )
  39 {
  40    GLuint i;
  41    for (i = 0; val ; val >>= 1)
  42       if (val & 1)
  43          i++;
  44    return i;
  45 }
  46
  47
  48 static GLuint brw_parameter_state_flags(const enum state_index state[])
  49 {
  50    switch (state[0]) {
  51    case STATE_MATERIAL:
  52    case STATE_LIGHT:
  53    case STATE_LIGHTMODEL_AMBIENT:
  54    case STATE_LIGHTMODEL_SCENECOLOR:
  55    case STATE_LIGHTPROD:
  56       return _NEW_LIGHT;
  57
  58    case STATE_TEXGEN:
  59    case STATE_TEXENV_COLOR:
  60       return _NEW_TEXTURE;
  61
  62    case STATE_FOG_COLOR:
  63    case STATE_FOG_PARAMS:
  64       return _NEW_FOG;
  65
  66    case STATE_CLIPPLANE:
  67       return _NEW_TRANSFORM;
  68
  69    case STATE_POINT_SIZE:
  70    case STATE_POINT_ATTENUATION:
  71       return _NEW_POINT;
  72
  73    case STATE_MATRIX:
  74       switch (state[1]) {
  75       case STATE_MODELVIEW:
  76          return _NEW_MODELVIEW;
  77       case STATE_PROJECTION:
  78          return _NEW_PROJECTION;
  79       case STATE_MVP:
  80          return _NEW_MODELVIEW | _NEW_PROJECTION;
  81       case STATE_TEXTURE:
  82          return _NEW_TEXTURE_MATRIX;
  83       case STATE_PROGRAM:
  84          return _NEW_TRACK_MATRIX;
  85       default:
  86          assert(0);
  87          return 0;
  88       }
  89
  90    case STATE_DEPTH_RANGE:
  91       return _NEW_VIEWPORT;
  92
  93    case STATE_FRAGMENT_PROGRAM:
  94    case STATE_VERTEX_PROGRAM:
  95       return _NEW_PROGRAM;
  96
  97    case STATE_INTERNAL:
  98       switch (state[1]) {
  99       case STATE_NORMAL_SCALE:
 100          return _NEW_MODELVIEW;
 101       default:
 102          assert(0);
 103          return 0;
 104       }
 105
 106    default:
 107       assert(0);
 108       return 0;
 109    }
 110 }
 111
 112
 113 GLuint
 114 brw_parameter_list_state_flags(struct gl_program_parameter_list *paramList)
 115 {
 116    GLuint i;
 117    GLuint result = 0;
 118
 119    if (!paramList)
 120       return 0;
 121
 122    for (i = 0; i < paramList->NumParameters; i++) {
 123       if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) {
 124          result |= brw_parameter_state_flags(paramList->Parameters[i].StateIndexes);
 125       }
 126    }
 127
 128    return result;
 129 }
 130
 131
 132 GLuint brw_translate_blend_equation( GLenum mode )
 133 {
 134    switch (mode) {
 135    case GL_FUNC_ADD:
 136       return BRW_BLENDFUNCTION_ADD;
 137    case GL_MIN:
 138       return BRW_BLENDFUNCTION_MIN;
 139    case GL_MAX:
 140       return BRW_BLENDFUNCTION_MAX;
 141    case GL_FUNC_SUBTRACT:
 142       return BRW_BLENDFUNCTION_SUBTRACT;
 143    case GL_FUNC_REVERSE_SUBTRACT:
 144       return BRW_BLENDFUNCTION_REVERSE_SUBTRACT;
 145    default:
 146       assert(0);
 147       return BRW_BLENDFUNCTION_ADD;
 148    }
 149 }
 150
 151 GLuint brw_translate_blend_factor( GLenum factor )
 152 {
 153    switch(factor) {
 154    case GL_ZERO:
 155       return BRW_BLENDFACTOR_ZERO;
 156    case GL_SRC_ALPHA:
 157       return BRW_BLENDFACTOR_SRC_ALPHA;
 158    case GL_ONE:
 159       return BRW_BLENDFACTOR_ONE;
 160    case GL_SRC_COLOR:
 161       return BRW_BLENDFACTOR_SRC_COLOR;
 162    case GL_ONE_MINUS_SRC_COLOR:
 163       return BRW_BLENDFACTOR_INV_SRC_COLOR;
 164    case GL_DST_COLOR:
 165       return BRW_BLENDFACTOR_DST_COLOR;
 166    case GL_ONE_MINUS_DST_COLOR:
 167       return BRW_BLENDFACTOR_INV_DST_COLOR;
 168    case GL_ONE_MINUS_SRC_ALPHA:
 169       return BRW_BLENDFACTOR_INV_SRC_ALPHA;
 170    case GL_DST_ALPHA:
 171       return BRW_BLENDFACTOR_DST_ALPHA;
 172    case GL_ONE_MINUS_DST_ALPHA:
 173       return BRW_BLENDFACTOR_INV_DST_ALPHA;
 174    case GL_SRC_ALPHA_SATURATE:
 175       return BRW_BLENDFACTOR_SRC_ALPHA_SATURATE;
 176    case GL_CONSTANT_COLOR:
 177       return BRW_BLENDFACTOR_CONST_COLOR;
 178    case GL_ONE_MINUS_CONSTANT_COLOR:
 179       return BRW_BLENDFACTOR_INV_CONST_COLOR;
 180    case GL_CONSTANT_ALPHA:
 181       return BRW_BLENDFACTOR_CONST_ALPHA;
 182    case GL_ONE_MINUS_CONSTANT_ALPHA:
 183       return BRW_BLENDFACTOR_INV_CONST_ALPHA;
 184    default:
 185       assert(0);
 186       return BRW_BLENDFACTOR_ZERO;
 187    }
 188 }