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/**************************************************************************
*
* Copyright 2013 Red Hat
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "main/bufferobj.h"
#include "main/framebuffer.h"
#include "state_tracker/st_cb_msaa.h"
#include "state_tracker/st_context.h"
#include "state_tracker/st_atom.h"
#include "state_tracker/st_cb_fbo.h"
#include "pipe/p_context.h"
static void
st_GetSamplePosition(struct gl_context *ctx,
struct gl_framebuffer *fb,
GLuint index,
GLfloat *outPos)
{
struct st_context *st = st_context(ctx);
st_validate_state(st, ST_PIPELINE_UPDATE_FRAMEBUFFER);
if (st->pipe->get_sample_position)
st->pipe->get_sample_position(st->pipe,
_mesa_geometric_samples(fb),
index, outPos);
else
outPos[0] = outPos[1] = 0.5f;
}
static void
st_GetProgrammableSampleCaps(struct gl_context *ctx, const struct gl_framebuffer *fb,
GLuint *outBits, GLuint *outWidth, GLuint *outHeight)
{
struct st_context *st = st_context(ctx);
struct pipe_screen *screen = st->pipe->screen;
st_validate_state(st, ST_PIPELINE_UPDATE_FRAMEBUFFER);
*outBits = 4;
*outWidth = 1;
*outHeight = 1;
if (ctx->Extensions.ARB_sample_locations)
screen->get_sample_pixel_grid(screen, st->state.fb_num_samples,
outWidth, outHeight);
/* We could handle this better in some circumstances,
* but it's not really an issue */
if (*outWidth > MAX_SAMPLE_LOCATION_GRID_SIZE ||
*outHeight > MAX_SAMPLE_LOCATION_GRID_SIZE) {
*outWidth = 1;
*outHeight = 1;
}
}
void
st_init_msaa_functions(struct dd_function_table *functions)
{
functions->GetSamplePosition = st_GetSamplePosition;
functions->GetProgrammableSampleCaps = st_GetProgrammableSampleCaps;
}
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