[Mesa-dev] [PATCH 09/77] glsl: add initial implementation of shader cache
Timothy Arceri
timothy.arceri at collabora.com
Mon Oct 3 06:04:28 UTC 2016
This uses the recently-added cache.c to write out a serialization of
various state that's required in order to successfully load and use a
binary written out by a drivers backend, this state is referred to as
"metadata" throughout the implementation.
This patch is based on the initial work done by Carl.
---
src/compiler/Makefile.sources | 4 +-
src/compiler/glsl/shader_cache.cpp | 464 +++++++++++++++++++++++++++++++++++++
src/compiler/glsl/shader_cache.h | 38 +++
3 files changed, 505 insertions(+), 1 deletion(-)
create mode 100644 src/compiler/glsl/shader_cache.cpp
create mode 100644 src/compiler/glsl/shader_cache.h
diff --git a/src/compiler/Makefile.sources b/src/compiler/Makefile.sources
index 712b33a..46905ef 100644
--- a/src/compiler/Makefile.sources
+++ b/src/compiler/Makefile.sources
@@ -138,7 +138,9 @@ LIBGLSL_FILES = \
LIBGLSL_SHADER_CACHE_FILES = \
glsl/cache.c \
- glsl/cache.h
+ glsl/cache.h \
+ glsl/shader_cache.cpp \
+ glsl/shader_cache.h
# glsl_compiler
diff --git a/src/compiler/glsl/shader_cache.cpp b/src/compiler/glsl/shader_cache.cpp
new file mode 100644
index 0000000..d0d0a2e
--- /dev/null
+++ b/src/compiler/glsl/shader_cache.cpp
@@ -0,0 +1,464 @@
+/*
+ * Copyright © 2014 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.
+ */
+
+/**
+ * \file shader_cache.c
+ *
+ * GLSL shader cache implementation
+ *
+ * This uses the generic cache in cache.c to implement a cache of linked
+ * shader programs.
+ */
+
+#include "main/core.h"
+#include "glsl_symbol_table.h"
+#include "glsl_parser_extras.h"
+#include "ir.h"
+#include "program.h"
+#include "linker.h"
+#include "link_varyings.h"
+#include "ir_optimization.h"
+#include "ir_rvalue_visitor.h"
+#include "ir_uniform.h"
+#include "util/mesa-sha1.h"
+#include "util/string_to_uint_map.h"
+#include "blob.h"
+#include "cache.h"
+
+extern "C" {
+#include "main/shaderobj.h"
+#include "main/enums.h"
+#include "program/program.h"
+}
+
+static void
+encode_type_to_blob(struct blob *blob, const glsl_type *type)
+{
+ uint32_t encoding;
+
+ switch (type->base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ encoding = (type->base_type << 24) |
+ (type->vector_elements << 4) |
+ (type->matrix_columns);
+ break;
+ case GLSL_TYPE_SAMPLER:
+ encoding = (type->base_type) << 24 |
+ (type->sampler_dimensionality << 4) |
+ (type->sampler_shadow << 3) |
+ (type->sampler_array << 2) |
+ (type->sampled_type);
+ break;
+ case GLSL_TYPE_IMAGE:
+ case GLSL_TYPE_ATOMIC_UINT:
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE:
+ case GLSL_TYPE_ARRAY:
+ case GLSL_TYPE_VOID:
+ case GLSL_TYPE_ERROR:
+ default:
+ assert(!"Cannot encode type!");
+ encoding = 0;
+ break;
+ }
+
+ blob_write_uint32(blob, encoding);
+}
+
+static const glsl_type *
+decode_type_from_blob(struct blob_reader *blob)
+{
+ uint32_t u = blob_read_uint32(blob);
+ glsl_base_type base_type = (glsl_base_type) (u >> 24);
+
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ return glsl_type::get_instance(base_type, (u >> 4) & 0x0f, u & 0x0f);
+ case GLSL_TYPE_SAMPLER:
+ return glsl_type::get_sampler_instance((enum glsl_sampler_dim) ((u >> 4) & 0x07),
+ (u >> 3) & 0x01,
+ (u >> 2) & 0x01,
+ (glsl_base_type) ((u >> 0) & 0x03));
+ case GLSL_TYPE_IMAGE:
+ case GLSL_TYPE_ATOMIC_UINT:
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE:
+ case GLSL_TYPE_ARRAY:
+ case GLSL_TYPE_VOID:
+ case GLSL_TYPE_ERROR:
+ default:
+ assert(!"Cannot decode type!");
+ return NULL;
+ }
+}
+
+static void
+write_uniforms(struct blob *metadata, struct gl_shader_program *prog)
+{
+ uint32_t i;
+
+ blob_write_uint32(metadata, prog->SamplersValidated);
+ blob_write_uint32(metadata, prog->NumUniformStorage);
+ blob_write_uint32(metadata, prog->NumUniformDataSlots);
+
+ for (i = 0; i < prog->NumUniformStorage; i++) {
+ encode_type_to_blob(metadata, prog->UniformStorage[i].type);
+ blob_write_string(metadata, prog->UniformStorage[i].name);
+ blob_write_uint32(metadata, prog->UniformStorage[i].storage -
+ prog->UniformDataSlots);
+ blob_write_uint32(metadata, prog->UniformStorage[i].remap_location);
+ }
+}
+
+static void
+read_uniforms(struct blob_reader *metadata, struct gl_shader_program *prog)
+{
+ struct gl_uniform_storage *uniforms;
+ union gl_constant_value *data;
+ uint32_t i;
+
+ prog->SamplersValidated = blob_read_uint32(metadata);
+ prog->NumUniformStorage = blob_read_uint32(metadata);
+ prog->NumUniformDataSlots = blob_read_uint32(metadata);
+
+ uniforms = rzalloc_array(prog, struct gl_uniform_storage,
+ prog->NumUniformStorage);
+ prog->UniformStorage = uniforms;
+
+ data = rzalloc_array(uniforms, union gl_constant_value,
+ prog->NumUniformDataSlots);
+ prog->UniformDataSlots = data;
+
+ prog->UniformHash = new string_to_uint_map;
+
+ for (i = 0; i < prog->NumUniformStorage; i++) {
+ uniforms[i].type = decode_type_from_blob(metadata);
+ uniforms[i].name = ralloc_strdup(prog, blob_read_string (metadata));
+ uniforms[i].storage = data + blob_read_uint32(metadata);
+ uniforms[i].remap_location = blob_read_uint32(metadata);
+ uniforms[i].block_index = -1;
+ uniforms[i].atomic_buffer_index = -1;
+ prog->UniformHash->put(i, uniforms[i].name);
+ }
+}
+
+
+static void
+write_uniform_remap_table(struct blob *metadata,
+ struct gl_shader_program *prog)
+{
+ blob_write_uint32(metadata, prog->NumUniformRemapTable);
+
+ for (unsigned i = 0; i < prog->NumUniformRemapTable; i++) {
+ blob_write_uint32(metadata,
+ prog->UniformRemapTable[i] - prog->UniformStorage);
+ }
+}
+
+static void
+read_uniform_remap_table(struct blob_reader *metadata,
+ struct gl_shader_program *prog)
+{
+ unsigned i;
+
+ prog->NumUniformRemapTable = blob_read_uint32(metadata);
+
+ prog->UniformRemapTable =rzalloc_array(prog, struct gl_uniform_storage *,
+ prog->NumUniformRemapTable);
+
+ for (i = 0; i < prog->NumUniformRemapTable; i++) {
+ prog->UniformRemapTable[i] =
+ prog->UniformStorage + blob_read_uint32(metadata);
+ }
+}
+
+static void
+write_shader_parameters(struct blob *metadata,
+ struct gl_program_parameter_list *params)
+{
+ unsigned i;
+ struct gl_program_parameter *param;
+
+ blob_write_uint32(metadata, params->NumParameters);
+
+ for (i = 0; i < params->NumParameters; i++) {
+ param = ¶ms->Parameters[i];
+
+ blob_write_uint32(metadata, param->Type);
+ blob_write_string(metadata, param->Name);
+ blob_write_uint32(metadata, param->Size);
+ blob_write_uint32(metadata, param->DataType);
+ blob_write_bytes(metadata, param->StateIndexes,
+ sizeof(param->StateIndexes));
+ }
+
+ blob_write_uint32(metadata, params->StateFlags);
+}
+
+static void
+read_shader_parameters(struct blob_reader *metadata,
+ struct gl_program_parameter_list *params)
+{
+ uint32_t i, num_parameters;
+ const char *name;
+ gl_register_file type;
+ GLuint size;
+ GLenum data_type;
+ gl_state_index state_indexes[STATE_LENGTH];
+
+ num_parameters = blob_read_uint32(metadata);
+
+ for (i = 0; i < num_parameters; i++) {
+
+ type = (gl_register_file) blob_read_uint32(metadata);
+ name = blob_read_string(metadata);
+ size = blob_read_uint32(metadata);
+ data_type = blob_read_uint32(metadata);
+ blob_copy_bytes(metadata, (uint8_t *) state_indexes,
+ sizeof(state_indexes));
+
+ _mesa_add_parameter(params, type, name, size, data_type,
+ NULL, state_indexes);
+ }
+
+ params->StateFlags = blob_read_uint32(metadata);
+}
+
+static void
+write_shader_metadata(struct blob *metadata, gl_linked_shader *shader)
+{
+ struct gl_program *glprog;
+
+ if (shader->Program) {
+ glprog = shader->Program;
+ /* Use the lowest bit to indicate that there is shader_metadata here. */
+ blob_write_uint64(metadata, glprog->InputsRead << 1 | 1);
+ blob_write_uint64(metadata, glprog->OutputsWritten);
+ blob_write_bytes(metadata, glprog->TexturesUsed,
+ sizeof(glprog->TexturesUsed));
+ blob_write_uint64(metadata, glprog->SamplersUsed);
+ blob_write_uint64(metadata, shader->num_samplers);
+
+ write_shader_parameters(metadata, glprog->Parameters);
+
+ } else {
+ /* An initial value of 0 indicates that this shader is not present. */
+ blob_write_uint64(metadata, 0);
+ }
+}
+
+static void
+read_shader_metadata(struct blob_reader *metadata,
+ struct gl_program *glprog,
+ gl_linked_shader *linked)
+{
+ uint64_t has_shader;
+
+ has_shader = blob_read_uint64(metadata);
+
+ if (has_shader) {
+ glprog->InputsRead = has_shader >> 1;
+ glprog->OutputsWritten = blob_read_uint64(metadata);
+ blob_copy_bytes(metadata, (uint8_t *) glprog->TexturesUsed,
+ sizeof(glprog->TexturesUsed));
+ glprog->SamplersUsed = blob_read_uint64(metadata);
+ linked->num_samplers = blob_read_uint64(metadata);
+
+ glprog->Parameters = _mesa_new_parameter_list();
+
+ read_shader_parameters(metadata, glprog->Parameters);
+
+ linked->Program = glprog;
+ } else {
+ linked->Program = NULL;
+ }
+}
+
+static void
+create_binding_str(const char *key, unsigned value, void *closure)
+{
+ char **bindings_str = (char **) closure;
+ ralloc_asprintf_append(bindings_str, "%s:%u,", key, value);
+}
+
+static void
+create_linked_shader_and_program(struct gl_context *ctx,
+ gl_shader_stage stage,
+ struct gl_shader_program *prog,
+ struct blob_reader *metadata)
+{
+ struct gl_program *glprog;
+ struct gl_linked_shader *linked;
+
+ linked = ctx->Driver.NewShader(stage);
+ glprog = ctx->Driver.NewProgram(ctx, _mesa_shader_stage_to_program(stage),
+ prog->Name);
+
+ read_shader_metadata(metadata, glprog, linked);
+ _mesa_reference_program(ctx, &linked->Program, glprog);
+ prog->_LinkedShaders[stage] = linked;
+}
+
+void
+shader_cache_write_program_metadata(struct gl_context *ctx,
+ struct gl_shader_program *prog)
+{
+ struct blob *metadata;
+ char sha1_buf[41];
+ struct program_cache *cache;
+
+ cache = ctx->Cache;
+ if (!cache)
+ return;
+
+ /* We should be able to serialize any valid combinations of shaders, but
+ * for now we only support vs and fs.
+ */
+ if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] ||
+ prog->_LinkedShaders[MESA_SHADER_TESS_EVAL] ||
+ prog->_LinkedShaders[MESA_SHADER_TESS_CTRL] ||
+ prog->_LinkedShaders[MESA_SHADER_COMPUTE])
+ return;
+
+ metadata = blob_create(NULL);
+
+ write_uniforms(metadata, prog);
+
+ for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+ if (prog->_LinkedShaders[i])
+ write_shader_metadata(metadata, prog->_LinkedShaders[i]);
+ }
+
+ write_uniform_remap_table(metadata, prog);
+
+ for (unsigned i = 0; i < prog->NumShaders; i++) {
+ cache_put_key(cache, prog->Shaders[i]->sha1);
+ if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
+ fprintf(stderr, "marking shader: %s\n",
+ _mesa_sha1_format(sha1_buf, prog->Shaders[i]->sha1));
+ }
+ }
+
+ cache_put(cache, prog->sha1, metadata->data, metadata->size);
+
+ ralloc_free(metadata);
+
+ if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
+ fprintf(stderr, "putting program metadata in cache: %s\n",
+ _mesa_sha1_format(sha1_buf, prog->sha1));
+ }
+}
+
+bool
+shader_cache_read_program_metadata(struct gl_context *ctx,
+ struct gl_shader_program *prog)
+{
+ const char *stage_name[] = { "vs", "tcs", "tes", "gs", "fs", "cs" };
+ char *buf, sha1buf[41];
+ unsigned char sha1[20];
+ uint8_t *buffer;
+ struct program_cache *cache;
+ size_t size;
+ struct blob_reader metadata;
+
+ cache = ctx->Cache;
+ if (!cache)
+ return false;
+
+
+ /* Include bindings when creating sha1. These bindings change the resulting
+ * binary so they are just as important as the shader source.
+ */
+ char *bindings_str = ralloc_strdup(NULL, "vb: ");
+ prog->AttributeBindings->iterate(create_binding_str, &bindings_str);
+ ralloc_strcat(&bindings_str, "fb: ");
+ prog->FragDataBindings->iterate(create_binding_str, &bindings_str);
+ ralloc_strcat(&bindings_str, "fbi: ");
+ prog->FragDataIndexBindings->iterate(create_binding_str, &bindings_str);
+ _mesa_sha1_compute(bindings_str, strlen(bindings_str), sha1);
+ ralloc_free(bindings_str);
+
+ buf = ralloc_strdup(NULL, "bindings: ");
+ ralloc_asprintf_append(&buf, "%s\n", _mesa_sha1_format(sha1buf, sha1));
+
+ for (unsigned i = 0; i < prog->NumShaders; i++) {
+ ralloc_asprintf_append(&buf, "%s: %s\n",
+ stage_name[prog->Shaders[i]->Stage],
+ _mesa_sha1_format(sha1buf,
+ prog->Shaders[i]->sha1));
+ }
+ _mesa_sha1_compute(buf, strlen(buf), prog->sha1);
+ ralloc_free(buf);
+
+ buffer = (uint8_t *) cache_get(cache, prog->sha1, &size);
+ if (buffer == NULL) {
+ /* FIXME: Fall back and link shaders here, if necessary, compile any
+ * shaders we didn't compile earlier.
+ */
+ return false;
+ }
+
+ if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
+ fprintf(stderr, "loading shader program meta data from cache: %s\n",
+ _mesa_sha1_format(sha1buf, prog->sha1));
+ }
+
+ blob_reader_init(&metadata, buffer, size);
+
+ assert(prog->UniformStorage == NULL);
+
+ read_uniforms(&metadata, prog);
+
+ /* Find stages used in the program */
+ bool linked_stages[MESA_SHADER_STAGES] = { 0 };
+ for (unsigned i = 0; i < prog->NumShaders; i++) {
+ linked_stages[prog->Shaders[i]->Stage] = true;
+ }
+
+ for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+ if (linked_stages[i]) {
+ create_linked_shader_and_program(ctx, (gl_shader_stage) i,
+ prog, &metadata);
+ }
+ }
+
+ read_uniform_remap_table(&metadata, prog);
+
+ if (metadata.current != metadata.end || metadata.overrun) {
+ /* FIXME: At this point, we should discard the item from the cache and
+ * rebuild from source.
+ */
+ }
+
+ prog->LinkStatus = true;
+
+ free (buffer);
+
+ return true;
+}
diff --git a/src/compiler/glsl/shader_cache.h b/src/compiler/glsl/shader_cache.h
new file mode 100644
index 0000000..ffcf4f8
--- /dev/null
+++ b/src/compiler/glsl/shader_cache.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright © 2014 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.
+ */
+
+#pragma once
+#ifndef SHADER_CACHE
+#define SHADER_CACHE
+
+#include "cache.h"
+
+void
+shader_cache_write_program_metadata(struct gl_context *ctx,
+ struct gl_shader_program *prog);
+
+bool
+shader_cache_read_program_metadata(struct gl_context *ctx,
+ struct gl_shader_program *prog);
+
+#endif /* GLSL_SYMBOL_TABLE */
--
2.7.4
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