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/*
* Copyright © 2015 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 "util/ralloc.h"
#include "brw_context.h"
#include "brw_defines.h"
#include "brw_cs.h"
#include "brw_wm.h"
#include "intel_mipmap_tree.h"
#include "intel_batchbuffer.h"
#include "brw_state.h"
#include "program/prog_statevars.h"
#include "compiler/glsl/ir_uniform.h"
#include "main/shaderapi.h"
/**
* Creates a region containing the push constants for the CS on gen7+.
*
* Push constants are constant values (such as GLSL uniforms) that are
* pre-loaded into a shader stage's register space at thread spawn time.
*
* For other stages, see brw_curbe.c:brw_upload_constant_buffer for the
* equivalent gen4/5 code and gen6_vs_state.c:gen6_upload_push_constants for
* gen6+.
*/
static void
brw_upload_cs_push_constants(struct brw_context *brw,
const struct gl_program *prog,
const struct brw_cs_prog_data *cs_prog_data,
struct brw_stage_state *stage_state)
{
struct gl_context *ctx = &brw->ctx;
const struct brw_stage_prog_data *prog_data =
(struct brw_stage_prog_data*) cs_prog_data;
/* Updates the ParamaterValues[i] pointers for all parameters of the
* basic type of PROGRAM_STATE_VAR.
*/
/* XXX: Should this happen somewhere before to get our state flag set? */
_mesa_load_state_parameters(ctx, prog->Parameters);
if (cs_prog_data->push.total.size == 0) {
stage_state->push_const_size = 0;
return;
}
gl_constant_value *param = (gl_constant_value*)
brw_state_batch(brw, ALIGN(cs_prog_data->push.total.size, 64),
64, &stage_state->push_const_offset);
assert(param);
STATIC_ASSERT(sizeof(gl_constant_value) == sizeof(float));
if (cs_prog_data->push.cross_thread.size > 0) {
gl_constant_value *param_copy = param;
assert(cs_prog_data->thread_local_id_index < 0 ||
cs_prog_data->thread_local_id_index >=
cs_prog_data->push.cross_thread.dwords);
for (unsigned i = 0;
i < cs_prog_data->push.cross_thread.dwords;
i++) {
param_copy[i] = *prog_data->param[i];
}
}
gl_constant_value thread_id;
if (cs_prog_data->push.per_thread.size > 0) {
for (unsigned t = 0; t < cs_prog_data->threads; t++) {
unsigned dst =
8 * (cs_prog_data->push.per_thread.regs * t +
cs_prog_data->push.cross_thread.regs);
unsigned src = cs_prog_data->push.cross_thread.dwords;
for ( ; src < prog_data->nr_params; src++, dst++) {
if (src != cs_prog_data->thread_local_id_index)
param[dst] = *prog_data->param[src];
else {
thread_id.u = t * cs_prog_data->simd_size;
param[dst] = thread_id;
}
}
}
}
stage_state->push_const_size =
cs_prog_data->push.cross_thread.regs +
cs_prog_data->push.per_thread.regs;
}
static void
gen7_upload_cs_push_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->cs.base;
/* BRW_NEW_COMPUTE_PROGRAM */
const struct brw_program *cp = (struct brw_program *) brw->compute_program;
if (cp) {
/* BRW_NEW_CS_PROG_DATA */
struct brw_cs_prog_data *cs_prog_data =
brw_cs_prog_data(brw->cs.base.prog_data);
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_COMPUTE);
brw_upload_cs_push_constants(brw, &cp->program, cs_prog_data,
stage_state);
}
}
const struct brw_tracked_state gen7_cs_push_constants = {
.dirty = {
.mesa = _NEW_PROGRAM_CONSTANTS,
.brw = BRW_NEW_BATCH |
BRW_NEW_BLORP |
BRW_NEW_COMPUTE_PROGRAM |
BRW_NEW_CS_PROG_DATA,
},
.emit = gen7_upload_cs_push_constants,
};
/**
* Creates a new CS constant buffer reflecting the current CS program's
* constants, if needed by the CS program.
*/
static void
brw_upload_cs_pull_constants(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->cs.base;
/* BRW_NEW_COMPUTE_PROGRAM */
struct brw_program *cp = (struct brw_program *) brw->compute_program;
/* BRW_NEW_CS_PROG_DATA */
const struct brw_stage_prog_data *prog_data = brw->cs.base.prog_data;
_mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_COMPUTE);
/* _NEW_PROGRAM_CONSTANTS */
brw_upload_pull_constants(brw, BRW_NEW_SURFACES, &cp->program,
stage_state, prog_data);
}
const struct brw_tracked_state brw_cs_pull_constants = {
.dirty = {
.mesa = _NEW_PROGRAM_CONSTANTS,
.brw = BRW_NEW_BATCH |
BRW_NEW_BLORP |
BRW_NEW_COMPUTE_PROGRAM |
BRW_NEW_CS_PROG_DATA,
},
.emit = brw_upload_cs_pull_constants,
};
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