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/*
* Copyright © 2009 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#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"
static void
gen6_prepare_vs_push_constants(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
/* _BRW_NEW_VERTEX_PROGRAM */
const struct brw_vertex_program *vp =
brw_vertex_program_const(brw->vertex_program);
unsigned int nr_params = brw->vs.prog_data->nr_params / 4;
if (brw->vertex_program->IsNVProgram)
_mesa_load_tracked_matrices(ctx);
/* 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, vp->program.Base.Parameters);
/* CACHE_NEW_VS_PROG | _NEW_TRANSFORM */
if (brw->vs.prog_data->nr_params == 0 && !ctx->Transform.ClipPlanesEnabled) {
brw->vs.push_const_size = 0;
} else {
int params_uploaded = 0;
float *param;
int i;
param = brw_state_batch(brw, AUB_TRACE_NO_TYPE,
(MAX_CLIP_PLANES + nr_params) *
4 * sizeof(float),
32, &brw->vs.push_const_offset);
/* This should be loaded like any other param, but it's ad-hoc
* until we redo the VS backend.
*/
for (i = 0; i < MAX_CLIP_PLANES; i++) {
if (ctx->Transform.ClipPlanesEnabled & (1 << i)) {
memcpy(param, ctx->Transform._ClipUserPlane[i], 4 * sizeof(float));
param += 4;
params_uploaded++;
}
}
/* Align to a reg for convenience for brw_vs_emit.c */
if (params_uploaded & 1) {
param += 4;
params_uploaded++;
}
for (i = 0; i < vp->program.Base.Parameters->NumParameters; i++) {
if (brw->vs.constant_map[i] != -1) {
memcpy(param + brw->vs.constant_map[i] * 4,
vp->program.Base.Parameters->ParameterValues[i],
4 * sizeof(float));
params_uploaded++;
}
}
if (0) {
printf("VS constant buffer:\n");
for (i = 0; i < params_uploaded; i++) {
float *buf = param + i * 4;
printf("%d: %f %f %f %f\n",
i, buf[0], buf[1], buf[2], buf[3]);
}
}
brw->vs.push_const_size = (params_uploaded + 1) / 2;
/* We can only push 32 registers of constants at a time. */
assert(brw->vs.push_const_size <= 32);
}
}
const struct brw_tracked_state gen6_vs_constants = {
.dirty = {
.mesa = _NEW_TRANSFORM | _NEW_PROGRAM_CONSTANTS,
.brw = (BRW_NEW_BATCH |
BRW_NEW_VERTEX_PROGRAM),
.cache = CACHE_NEW_VS_PROG,
},
.prepare = gen6_prepare_vs_push_constants,
};
static void
upload_vs_state(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
if (brw->vs.push_const_size == 0) {
/* Disable the push constant buffers. */
BEGIN_BATCH(5);
OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 | (5 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
BEGIN_BATCH(5);
OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 |
GEN6_CONSTANT_BUFFER_0_ENABLE |
(5 - 2));
/* Pointer to the VS constant buffer. Covered by the set of
* state flags from gen6_prepare_wm_constants
*/
OUT_BATCH(brw->vs.push_const_offset +
brw->vs.push_const_size - 1);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
BEGIN_BATCH(6);
OUT_BATCH(_3DSTATE_VS << 16 | (6 - 2));
OUT_BATCH(brw->vs.prog_offset);
OUT_BATCH((0 << GEN6_VS_SAMPLER_COUNT_SHIFT) |
GEN6_VS_FLOATING_POINT_MODE_ALT |
(brw->vs.nr_surfaces << GEN6_VS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
OUT_BATCH(0); /* scratch space base offset */
OUT_BATCH((1 << GEN6_VS_DISPATCH_START_GRF_SHIFT) |
(brw->vs.prog_data->urb_read_length << GEN6_VS_URB_READ_LENGTH_SHIFT) |
(0 << GEN6_VS_URB_ENTRY_READ_OFFSET_SHIFT));
OUT_BATCH(((brw->vs_max_threads - 1) << GEN6_VS_MAX_THREADS_SHIFT) |
GEN6_VS_STATISTICS_ENABLE |
GEN6_VS_ENABLE);
ADVANCE_BATCH();
}
const struct brw_tracked_state gen6_vs_state = {
.dirty = {
.mesa = _NEW_TRANSFORM | _NEW_PROGRAM_CONSTANTS,
.brw = (BRW_NEW_NR_VS_SURFACES |
BRW_NEW_URB_FENCE |
BRW_NEW_CONTEXT |
BRW_NEW_VERTEX_PROGRAM |
BRW_NEW_BATCH),
.cache = CACHE_NEW_VS_PROG
},
.emit = upload_vs_state,
};
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