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|
/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
*
* 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:
* Rob Clark <robclark@freedesktop.org>
*/
#include "pipe/p_state.h"
#include "util/u_string.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "tgsi/tgsi_dump.h"
#include "tgsi/tgsi_parse.h"
#include "freedreno_context.h"
#include "freedreno_util.h"
#include "ir3_shader.h"
#include "ir3_compiler.h"
static void
delete_variant(struct ir3_shader_variant *v)
{
if (v->ir)
ir3_destroy(v->ir);
fd_bo_del(v->bo);
free(v);
}
static void
assemble_variant(struct ir3_shader_variant *v)
{
struct fd_context *ctx = fd_context(v->shader->pctx);
uint32_t gpu_id = ir3_shader_gpuid(v->shader);
uint32_t sz, *bin;
bin = ir3_assemble(v->ir, &v->info, gpu_id);
sz = v->info.sizedwords * 4;
v->bo = fd_bo_new(ctx->dev, sz,
DRM_FREEDRENO_GEM_CACHE_WCOMBINE |
DRM_FREEDRENO_GEM_TYPE_KMEM);
memcpy(fd_bo_map(v->bo), bin, sz);
free(bin);
if (gpu_id >= 400) {
v->instrlen = v->info.sizedwords / (2 * 16);
} else {
v->instrlen = v->info.sizedwords / (2 * 4);
}
/* NOTE: if relative addressing is used, we set constlen in
* the compiler (to worst-case value) since we don't know in
* the assembler what the max addr reg value can be:
*/
v->constlen = MAX2(v->constlen, v->info.max_const + 1);
/* no need to keep the ir around beyond this point: */
ir3_destroy(v->ir);
v->ir = NULL;
}
/* for vertex shader, the inputs are loaded into registers before the shader
* is executed, so max_regs from the shader instructions might not properly
* reflect the # of registers actually used:
*/
static void
fixup_vp_regfootprint(struct ir3_shader_variant *v)
{
unsigned i;
for (i = 0; i < v->inputs_count; i++) {
if (v->inputs[i].compmask) {
int32_t regid = (v->inputs[i].regid + 3) >> 2;
v->info.max_reg = MAX2(v->info.max_reg, regid);
}
}
for (i = 0; i < v->outputs_count; i++) {
int32_t regid = (v->outputs[i].regid + 3) >> 2;
v->info.max_reg = MAX2(v->info.max_reg, regid);
}
}
/* reset before attempting to compile again.. */
static void reset_variant(struct ir3_shader_variant *v, const char *msg)
{
debug_error(msg);
v->inputs_count = 0;
v->outputs_count = 0;
v->total_in = 0;
v->has_samp = false;
v->immediates_count = 0;
}
static struct ir3_shader_variant *
create_variant(struct ir3_shader *shader, struct ir3_shader_key key)
{
struct ir3_shader_variant *v = CALLOC_STRUCT(ir3_shader_variant);
const struct tgsi_token *tokens = shader->tokens;
int ret;
if (!v)
return NULL;
v->shader = shader;
v->key = key;
v->type = shader->type;
if (fd_mesa_debug & FD_DBG_DISASM) {
DBG("dump tgsi: type=%d, k={bp=%u,cts=%u,hp=%u}", shader->type,
key.binning_pass, key.color_two_side, key.half_precision);
tgsi_dump(tokens, 0);
}
if (!(fd_mesa_debug & FD_DBG_NOOPT)) {
ret = ir3_compile_shader(v, tokens, key, true);
if (ret) {
reset_variant(v, "new compiler failed, trying without copy propagation!");
ret = ir3_compile_shader(v, tokens, key, false);
if (ret)
reset_variant(v, "new compiler failed, trying fallback!");
}
} else {
ret = -1; /* force fallback to old compiler */
}
if (ret)
ret = ir3_compile_shader_old(v, tokens, key);
if (ret) {
debug_error("compile failed!");
goto fail;
}
assemble_variant(v);
if (!v->bo) {
debug_error("assemble failed!");
goto fail;
}
if (shader->type == SHADER_VERTEX)
fixup_vp_regfootprint(v);
if (fd_mesa_debug & FD_DBG_DISASM) {
DBG("disassemble: type=%d, k={bp=%u,cts=%u,hp=%u}", v->type,
key.binning_pass, key.color_two_side, key.half_precision);
disasm_a3xx(fd_bo_map(v->bo), v->info.sizedwords, 0, v->type);
}
return v;
fail:
delete_variant(v);
return NULL;
}
uint32_t
ir3_shader_gpuid(struct ir3_shader *shader)
{
struct fd_context *ctx = fd_context(shader->pctx);
return ctx->screen->gpu_id;
}
struct ir3_shader_variant *
ir3_shader_variant(struct ir3_shader *shader, struct ir3_shader_key key)
{
struct ir3_shader_variant *v;
/* some shader key values only apply to vertex or frag shader,
* so normalize the key to avoid constructing multiple identical
* variants:
*/
switch (shader->type) {
case SHADER_FRAGMENT:
case SHADER_COMPUTE:
key.binning_pass = false;
if (key.has_per_samp) {
key.vsaturate_s = 0;
key.vsaturate_t = 0;
key.vsaturate_r = 0;
}
break;
case SHADER_VERTEX:
key.color_two_side = false;
key.half_precision = false;
key.alpha = false;
if (key.has_per_samp) {
key.fsaturate_s = 0;
key.fsaturate_t = 0;
key.fsaturate_r = 0;
}
break;
}
for (v = shader->variants; v; v = v->next)
if (ir3_shader_key_equal(&key, &v->key))
return v;
/* compile new variant if it doesn't exist already: */
v = create_variant(shader, key);
v->next = shader->variants;
shader->variants = v;
return v;
}
void
ir3_shader_destroy(struct ir3_shader *shader)
{
struct ir3_shader_variant *v, *t;
for (v = shader->variants; v; ) {
t = v;
v = v->next;
delete_variant(t);
}
free((void *)shader->tokens);
free(shader);
}
struct ir3_shader *
ir3_shader_create(struct pipe_context *pctx, const struct tgsi_token *tokens,
enum shader_t type)
{
struct ir3_shader *shader = CALLOC_STRUCT(ir3_shader);
shader->pctx = pctx;
shader->type = type;
shader->tokens = tgsi_dup_tokens(tokens);
return shader;
}
|
