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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2013 Red Hat
  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 THE AUTHORS 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. #include "main/bufferobj.h"
  29. #include "main/imports.h"
  30.  
  31. #include "state_tracker/st_cb_msaa.h"
  32. #include "state_tracker/st_context.h"
  33. #include "state_tracker/st_atom.h"
  34. #include "state_tracker/st_cb_fbo.h"
  35.  
  36. #include "pipe/p_context.h"
  37.  
  38.  
  39. static void
  40. st_GetSamplePosition(struct gl_context *ctx,
  41.                      struct gl_framebuffer *fb,
  42.                      GLuint index,
  43.                      GLfloat *outValue)
  44. {
  45.    struct st_context *st = st_context(ctx);
  46.  
  47.    st_validate_state(st);
  48.  
  49.    if (st->pipe->get_sample_position)
  50.       st->pipe->get_sample_position(st->pipe, (unsigned) fb->Visual.samples,
  51.                                     index, outValue);
  52. }
  53.  
  54.  
  55. void
  56. st_init_msaa_functions(struct dd_function_table *functions)
  57. {
  58.    functions->GetSamplePosition = st_GetSamplePosition;
  59. }
  60.