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       case STATE_TEXRECT_SCALE:
 102          return _NEW_TEXTURE;
 103       default:
 104          assert(0);
 105          return 0;
 106       }
 107
 108    default:
 109       assert(0);
 110       return 0;
 111    }
 112 }
 113
 114
 115 GLuint
 116 brw_parameter_list_state_flags(struct gl_program_parameter_list *paramList)
 117 {
 118    GLuint i;
 119    GLuint result = 0;
 120
 121    if (!paramList)
 122       return 0;
 123
 124    for (i = 0; i < paramList->NumParameters; i++) {
 125       if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) {
 126          result |= brw_parameter_state_flags(paramList->Parameters[i].StateIndexes);
 127       }
 128    }
 129
 130    return result;
 131 }
 132
 133
 134 GLuint brw_translate_blend_equation( GLenum mode )
 135 {
 136    switch (mode) {
 137    case GL_FUNC_ADD:
 138       return BRW_BLENDFUNCTION_ADD;
 139    case GL_MIN:
 140       return BRW_BLENDFUNCTION_MIN;
 141    case GL_MAX:
 142       return BRW_BLENDFUNCTION_MAX;
 143    case GL_FUNC_SUBTRACT:
 144       return BRW_BLENDFUNCTION_SUBTRACT;
 145    case GL_FUNC_REVERSE_SUBTRACT:
 146       return BRW_BLENDFUNCTION_REVERSE_SUBTRACT;
 147    default:
 148       assert(0);
 149       return BRW_BLENDFUNCTION_ADD;
 150    }
 151 }
 152
 153 GLuint brw_translate_blend_factor( GLenum factor )
 154 {
 155    switch(factor) {
 156    case GL_ZERO:
 157       return BRW_BLENDFACTOR_ZERO;
 158    case GL_SRC_ALPHA:
 159       return BRW_BLENDFACTOR_SRC_ALPHA;
 160    case GL_ONE:
 161       return BRW_BLENDFACTOR_ONE;
 162    case GL_SRC_COLOR:
 163       return BRW_BLENDFACTOR_SRC_COLOR;
 164    case GL_ONE_MINUS_SRC_COLOR:
 165       return BRW_BLENDFACTOR_INV_SRC_COLOR;
 166    case GL_DST_COLOR:
 167       return BRW_BLENDFACTOR_DST_COLOR;
 168    case GL_ONE_MINUS_DST_COLOR:
 169       return BRW_BLENDFACTOR_INV_DST_COLOR;
 170    case GL_ONE_MINUS_SRC_ALPHA:
 171       return BRW_BLENDFACTOR_INV_SRC_ALPHA;
 172    case GL_DST_ALPHA:
 173       return BRW_BLENDFACTOR_DST_ALPHA;
 174    case GL_ONE_MINUS_DST_ALPHA:
 175       return BRW_BLENDFACTOR_INV_DST_ALPHA;
 176    case GL_SRC_ALPHA_SATURATE:
 177       return BRW_BLENDFACTOR_SRC_ALPHA_SATURATE;
 178    case GL_CONSTANT_COLOR:
 179       return BRW_BLENDFACTOR_CONST_COLOR;
 180    case GL_ONE_MINUS_CONSTANT_COLOR:
 181       return BRW_BLENDFACTOR_INV_CONST_COLOR;
 182    case GL_CONSTANT_ALPHA:
 183       return BRW_BLENDFACTOR_CONST_ALPHA;
 184    case GL_ONE_MINUS_CONSTANT_ALPHA:
 185       return BRW_BLENDFACTOR_INV_CONST_ALPHA;
 186    default:
 187       assert(0);
 188       return BRW_BLENDFACTOR_ZERO;
 189    }
 190 }