1 /**************************************************************************
3 * Copyright 2013 Red Hat
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "main/bufferobj.h"
30 #include "main/framebuffer.h"
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"
37 #include "pipe/p_context.h"
41 st_GetSamplePosition(struct gl_context
*ctx
,
42 struct gl_framebuffer
*fb
,
46 struct st_context
*st
= st_context(ctx
);
48 st_validate_state(st
, ST_PIPELINE_UPDATE_FRAMEBUFFER
);
50 if (st
->pipe
->get_sample_position
)
51 st
->pipe
->get_sample_position(st
->pipe
,
52 _mesa_geometric_samples(fb
),
55 outPos
[0] = outPos
[1] = 0.5f
;
60 st_GetProgrammableSampleCaps(struct gl_context
*ctx
, const struct gl_framebuffer
*fb
,
61 GLuint
*outBits
, GLuint
*outWidth
, GLuint
*outHeight
)
63 struct st_context
*st
= st_context(ctx
);
64 struct pipe_screen
*screen
= st
->pipe
->screen
;
66 st_validate_state(st
, ST_PIPELINE_UPDATE_FRAMEBUFFER
);
72 if (ctx
->Extensions
.ARB_sample_locations
)
73 screen
->get_sample_pixel_grid(screen
, st
->state
.fb_num_samples
,
76 /* We could handle this better in some circumstances,
77 * but it's not really an issue */
78 if (*outWidth
> MAX_SAMPLE_LOCATION_GRID_SIZE
||
79 *outHeight
> MAX_SAMPLE_LOCATION_GRID_SIZE
) {
86 st_init_msaa_functions(struct dd_function_table
*functions
)
88 functions
->GetSamplePosition
= st_GetSamplePosition
;
89 functions
->GetProgrammableSampleCaps
= st_GetProgrammableSampleCaps
;