src/gallium/state_trackers/wgl/stw_ext_gallium.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 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 "pipe/p_screen.h"
  30 #include "stw_device.h"
  31 #include "stw_winsys.h"
  32 #include "stw_ext_gallium.h"
  33
  34 #ifdef DEBUG
  35 #include "trace/tr_screen.h"
  36 #include "trace/tr_context.h"
  37 #endif
  38
  39
  40 struct pipe_screen * APIENTRY
  41 wglGetGalliumScreenMESA(void)
  42 {
  43    return stw_dev ? stw_dev->screen : NULL;
  44 }
  45
  46
  47 /* XXX: Unify with stw_create_layer_context */
  48 struct pipe_context * APIENTRY
  49 wglCreateGalliumContextMESA(void)
  50 {
  51    struct pipe_screen *screen = NULL;
  52    struct pipe_context *pipe = NULL;
  53
  54    if(!stw_dev)
  55       return NULL;
  56
  57    screen = stw_dev->screen;
  58
  59 #ifdef DEBUG
  60    /* Unwrap screen */
  61    if(stw_dev->trace_running)
  62       screen = trace_screen(screen)->screen;
  63 #endif
  64
  65    pipe = stw_dev->stw_winsys->create_context( screen );
  66    if (pipe == NULL)
  67       goto no_pipe;
  68
  69 #ifdef DEBUG
  70    /* Wrap context */
  71    if(stw_dev->trace_running)
  72       pipe = trace_context_create(stw_dev->screen, pipe);
  73 #endif
  74
  75    return pipe;
  76
  77 no_pipe:
  78    return NULL;
  79 }