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/*
* Copyright © 2012 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "intel_batchbuffer.h"
#include "brw_context.h"
#include "brw_defines.h"
#include "brw_multisample_state.h"
/**
* 3DSTATE_MULTISAMPLE
*/
void
gen8_emit_3dstate_multisample(struct brw_context *brw, unsigned num_samples)
{
assert(num_samples <= 16);
unsigned log2_samples = ffs(MAX2(num_samples, 1)) - 1;
BEGIN_BATCH(2);
OUT_BATCH(GEN8_3DSTATE_MULTISAMPLE << 16 | (2 - 2));
OUT_BATCH(MS_PIXEL_LOCATION_CENTER | log2_samples << 1);
ADVANCE_BATCH();
}
/**
* 3DSTATE_SAMPLE_PATTERN
*/
void
gen8_emit_3dstate_sample_pattern(struct brw_context *brw)
{
BEGIN_BATCH(9);
OUT_BATCH(_3DSTATE_SAMPLE_PATTERN << 16 | (9 - 2));
/* 16x MSAA */
OUT_BATCH(brw_multisample_positions_16x[0]); /* positions 3, 2, 1, 0 */
OUT_BATCH(brw_multisample_positions_16x[1]); /* positions 7, 6, 5, 4 */
OUT_BATCH(brw_multisample_positions_16x[2]); /* positions 11, 10, 9, 8 */
OUT_BATCH(brw_multisample_positions_16x[3]); /* positions 15, 14, 13, 12 */
/* 8x MSAA */
OUT_BATCH(brw_multisample_positions_8x[1]); /* sample positions 7654 */
OUT_BATCH(brw_multisample_positions_8x[0]); /* sample positions 3210 */
/* 4x MSAA */
OUT_BATCH(brw_multisample_positions_4x);
/* 1x and 2x MSAA */
OUT_BATCH(brw_multisample_positions_1x_2x);
ADVANCE_BATCH();
}
static void
upload_multisample_state(struct brw_context *brw)
{
gen8_emit_3dstate_multisample(brw, brw->num_samples);
gen6_emit_3dstate_sample_mask(brw, gen6_determine_sample_mask(brw));
}
const struct brw_tracked_state gen8_multisample_state = {
.dirty = {
.mesa = _NEW_MULTISAMPLE,
.brw = BRW_NEW_CONTEXT |
BRW_NEW_NUM_SAMPLES,
},
.emit = upload_multisample_state
};
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