workbench/libs/mesa/src/gallium/state_trackers/arosmesa/glagetconfig.c

   1 /*
   2     Copyright 2011-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include "arosmesa_funcs.h"
   7 #include <proto/exec.h>
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12
  13       void glAGetConfig(
  14
  15 /*  SYNOPSIS */
  16       GLAContext ctx,
  17       GLenum pname,
  18       GLint * params)
  19
  20 /*  FUNCTION
  21
  22         Gets value of selected parameter
  23
  24     INPUTS
  25
  26         pname - enum value of parameter
  27
  28         params - pointer to integer where the value is to be put
  29
  30     RESULT
  31
  32         None
  33
  34     BUGS
  35
  36     INTERNALS
  37
  38     HISTORY
  39
  40 *****************************************************************************/
  41 {
  42     LONG depthbits, stencilbits, accumbits, rbbits, gbits, abits;
  43     struct arosmesa_context * amesa = (struct arosmesa_context *)ctx;
  44
  45     switch(amesa->stvis.depth_stencil_format)
  46     {
  47         case(PIPE_FORMAT_S8_USCALED_Z24_UNORM): depthbits = 24; stencilbits = 8; break;
  48         case(PIPE_FORMAT_X8Z24_UNORM): depthbits = 24; stencilbits = 0; break;
  49         case(PIPE_FORMAT_Z24X8_UNORM): depthbits = 24; stencilbits = 0; break;
  50         case(PIPE_FORMAT_Z16_UNORM): depthbits = 16; stencilbits = 0; break;
  51         default: depthbits = -1; stencilbits = -1;
  52     }
  53
  54     switch(amesa->stvis.accum_format)
  55     {
  56         case(PIPE_FORMAT_R16G16B16A16_SNORM): accumbits = 16; break;
  57         default: accumbits = -1;
  58     }
  59
  60     switch(amesa->stvis.color_format)
  61     {
  62         case(PIPE_FORMAT_B5G6R5_UNORM): rbbits = 5; gbits = 6; abits = 0; break;
  63         case(PIPE_FORMAT_B8G8R8A8_UNORM): rbbits = 8; gbits = 8; abits = 8; break;
  64         default: rbbits = -1; gbits = -1; abits = 1;
  65     }
  66
  67     if (amesa)
  68     {
  69         switch(pname)
  70         {
  71             case GL_RED_BITS:
  72                 *params = rbbits;
  73                 break;
  74             case GL_GREEN_BITS:
  75                 *params = gbits;
  76                 break;
  77             case GL_BLUE_BITS:
  78                 *params = rbbits;
  79                 break;
  80             case GL_ALPHA_BITS:
  81                 *params = abits;
  82                 break;
  83             case GL_DOUBLEBUFFER:
  84                 *params = 1;
  85                 break;
  86             case GL_DEPTH_BITS:
  87                 *params = depthbits;
  88                 break;
  89             case GL_STENCIL_BITS:
  90                 *params = stencilbits;
  91                 break;
  92             case GL_ACCUM_RED_BITS:
  93                 *params = accumbits;
  94                 break;
  95             case GL_ACCUM_GREEN_BITS:
  96                 *params = accumbits;
  97                 break;
  98             case GL_ACCUM_BLUE_BITS:
  99                 *params = accumbits;
 100                 break;
 101             case GL_ACCUM_ALPHA_BITS:
 102                 *params = accumbits;
 103                 break;
 104             case GL_STEREO:
 105                 *params = 0;
 106                 break;
 107             default:
 108                 *params = -1;
 109         }
 110     }
 111 }
 112