workbench/libs/mesa/src/aros/mesa3dgl/mesa3dgl_glagetconfig.c

   1 /*
   2     Copyright 2011-2015, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <proto/exec.h>
   7
   8 #include "mesa3dgl_types.h"
   9 #include "mesa3dgl_support.h"
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14
  15       void glAGetConfig(
  16
  17 /*  SYNOPSIS */
  18       GLAContext ctx,
  19       GLenum pname,
  20       GLint * params)
  21
  22 /*  FUNCTION
  23
  24         Gets value of selected parameter
  25
  26     INPUTS
  27
  28         pname - enum value of parameter
  29
  30         params - pointer to integer where the value is to be put
  31
  32     RESULT
  33
  34         None
  35
  36     BUGS
  37
  38     INTERNALS
  39
  40     HISTORY
  41
  42 *****************************************************************************/
  43 {
  44     LONG depthbits, stencilbits, accumbits, rbbits, gbits, abits;
  45     struct mesa3dgl_context *_ctx = (struct mesa3dgl_context *)ctx;
  46
  47     switch(_ctx->stvis.depth_stencil_format)
  48     {
  49         case(PIPE_FORMAT_S8_USCALED_Z24_UNORM): depthbits = 24; stencilbits = 8; break;
  50         case(PIPE_FORMAT_X8Z24_UNORM): depthbits = 24; stencilbits = 0; break;
  51         case(PIPE_FORMAT_Z24X8_UNORM): depthbits = 24; stencilbits = 0; break;
  52         case(PIPE_FORMAT_Z16_UNORM): depthbits = 16; stencilbits = 0; break;
  53         default: depthbits = -1; stencilbits = -1;
  54     }
  55
  56     switch(_ctx->stvis.accum_format)
  57     {
  58         case(PIPE_FORMAT_R16G16B16A16_SNORM): accumbits = 16; break;
  59         default: accumbits = -1;
  60     }
  61
  62     switch(_ctx->stvis.color_format)
  63     {
  64         case(PIPE_FORMAT_B5G6R5_UNORM): rbbits = 5; gbits = 6; abits = 0; break;
  65         case(PIPE_FORMAT_B8G8R8A8_UNORM): rbbits = 8; gbits = 8; abits = 8; break;
  66         default: rbbits = -1; gbits = -1; abits = 1;
  67     }
  68
  69     if (_ctx)
  70     {
  71         switch(pname)
  72         {
  73             case GL_RED_BITS:
  74                 *params = rbbits;
  75                 break;
  76             case GL_GREEN_BITS:
  77                 *params = gbits;
  78                 break;
  79             case GL_BLUE_BITS:
  80                 *params = rbbits;
  81                 break;
  82             case GL_ALPHA_BITS:
  83                 *params = abits;
  84                 break;
  85             case GL_DOUBLEBUFFER:
  86                 *params = 1;
  87                 break;
  88             case GL_DEPTH_BITS:
  89                 *params = depthbits;
  90                 break;
  91             case GL_STENCIL_BITS:
  92                 *params = stencilbits;
  93                 break;
  94             case GL_ACCUM_RED_BITS:
  95                 *params = accumbits;
  96                 break;
  97             case GL_ACCUM_GREEN_BITS:
  98                 *params = accumbits;
  99                 break;
 100             case GL_ACCUM_BLUE_BITS:
 101                 *params = accumbits;
 102                 break;
 103             case GL_ACCUM_ALPHA_BITS:
 104                 *params = accumbits;
 105                 break;
 106             case GL_STEREO:
 107                 *params = 0;
 108                 break;
 109             default:
 110                 *params = -1;
 111         }
 112     }
 113 }
 114