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/*
* Copyright © 2011 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 "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_util.h"
#include "program/prog_parameter.h"
#include "program/prog_statevars.h"
#include "intel_batchbuffer.h"
void
gen7_upload_constant_state(struct brw_context *brw,
const struct brw_stage_state *stage_state,
bool active, unsigned opcode)
{
uint32_t mocs = brw->gen < 8 ? GEN7_MOCS_L3 : 0;
/* Disable if the shader stage is inactive or there are no push constants. */
active = active && stage_state->push_const_size != 0;
int dwords = brw->gen >= 8 ? 11 : 7;
BEGIN_BATCH(dwords);
OUT_BATCH(opcode << 16 | (dwords - 2));
/* Workaround for SKL+ (we use option #2 until we have a need for more
* constant buffers). This comes from the documentation for 3DSTATE_CONSTANT_*
*
* The driver must ensure The following case does not occur without a flush
* to the 3D engine: 3DSTATE_CONSTANT_* with buffer 3 read length equal to
* zero committed followed by a 3DSTATE_CONSTANT_* with buffer 0 read length
* not equal to zero committed. Possible ways to avoid this condition
* include:
* 1. always force buffer 3 to have a non zero read length
* 2. always force buffer 0 to a zero read length
*/
if (brw->gen >= 9 && active) {
OUT_BATCH(0);
OUT_BATCH(stage_state->push_const_size);
} else {
OUT_BATCH(active ? stage_state->push_const_size : 0);
OUT_BATCH(0);
}
/* Pointer to the constant buffer. Covered by the set of state flags
* from gen6_prepare_wm_contants
*/
if (brw->gen >= 9 && active) {
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
/* XXX: When using buffers other than 0, you need to specify the
* graphics virtual address regardless of INSPM/debug bits
*/
OUT_RELOC64(brw->batch.bo, I915_GEM_DOMAIN_RENDER, 0,
stage_state->push_const_offset);
OUT_BATCH(0);
OUT_BATCH(0);
} else if (brw->gen>= 8) {
OUT_BATCH(active ? (stage_state->push_const_offset | mocs) : 0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
} else {
OUT_BATCH(active ? (stage_state->push_const_offset | mocs) : 0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
}
ADVANCE_BATCH();
/* On SKL+ the new constants don't take effect until the next corresponding
* 3DSTATE_BINDING_TABLE_POINTER_* command is parsed so we need to ensure
* that is sent
*/
if (brw->gen >= 9)
brw->ctx.NewDriverState |= BRW_NEW_SURFACES;
}
static void
upload_vs_state(struct brw_context *brw)
{
const struct brw_stage_state *stage_state = &brw->vs.base;
uint32_t floating_point_mode = 0;
const int max_threads_shift = brw->is_haswell ?
HSW_VS_MAX_THREADS_SHIFT : GEN6_VS_MAX_THREADS_SHIFT;
if (!brw->is_haswell && !brw->is_baytrail)
gen7_emit_vs_workaround_flush(brw);
if (brw->vs.prog_data->base.base.use_alt_mode)
floating_point_mode = GEN6_VS_FLOATING_POINT_MODE_ALT;
BEGIN_BATCH(6);
OUT_BATCH(_3DSTATE_VS << 16 | (6 - 2));
OUT_BATCH(stage_state->prog_offset);
OUT_BATCH(floating_point_mode |
((ALIGN(stage_state->sampler_count, 4)/4) <<
GEN6_VS_SAMPLER_COUNT_SHIFT) |
((brw->vs.prog_data->base.base.binding_table.size_bytes / 4) <<
GEN6_VS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
if (brw->vs.prog_data->base.base.total_scratch) {
OUT_RELOC(stage_state->scratch_bo,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
ffs(brw->vs.prog_data->base.base.total_scratch) - 11);
} else {
OUT_BATCH(0);
}
OUT_BATCH((brw->vs.prog_data->base.base.dispatch_grf_start_reg <<
GEN6_VS_DISPATCH_START_GRF_SHIFT) |
(brw->vs.prog_data->base.urb_read_length << GEN6_VS_URB_READ_LENGTH_SHIFT) |
(0 << GEN6_VS_URB_ENTRY_READ_OFFSET_SHIFT));
OUT_BATCH(((brw->max_vs_threads - 1) << max_threads_shift) |
GEN6_VS_STATISTICS_ENABLE |
GEN6_VS_ENABLE);
ADVANCE_BATCH();
}
const struct brw_tracked_state gen7_vs_state = {
.dirty = {
.mesa = _NEW_TRANSFORM,
.brw = BRW_NEW_BATCH |
BRW_NEW_CONTEXT |
BRW_NEW_VS_PROG_DATA,
},
.emit = upload_vs_state,
};
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