• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #include "main/framebuffer.h"
31 
32 #include "state_tracker/st_cb_msaa.h"
33 #include "state_tracker/st_context.h"
34 #include "state_tracker/st_atom.h"
35 #include "state_tracker/st_cb_fbo.h"
36 
37 #include "pipe/p_context.h"
38 
39 
40 static void
st_GetSamplePosition(struct gl_context * ctx,struct gl_framebuffer * fb,GLuint index,GLfloat * outPos)41 st_GetSamplePosition(struct gl_context *ctx,
42                      struct gl_framebuffer *fb,
43                      GLuint index,
44                      GLfloat *outPos)
45 {
46    struct st_context *st = st_context(ctx);
47 
48    st_validate_state(st, ST_PIPELINE_RENDER);
49 
50    if (st->pipe->get_sample_position)
51       st->pipe->get_sample_position(st->pipe,
52                                     _mesa_geometric_samples(fb),
53                                     index, outPos);
54    else
55       outPos[0] = outPos[1] = 0.5f;
56 }
57 
58 
59 void
st_init_msaa_functions(struct dd_function_table * functions)60 st_init_msaa_functions(struct dd_function_table *functions)
61 {
62    functions->GetSamplePosition = st_GetSamplePosition;
63 }
64