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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "gpu/command_buffer/common/activity_flags.h"
#include "gpu/command_buffer/common/sync_token.h"
#include "gpu/command_buffer/service/framebuffer_completeness_cache.h"
#include "gpu/command_buffer/service/image_manager.h"
#include "gpu/command_buffer/service/passthrough_discardable_manager.h"
#include "gpu/command_buffer/service/sequence_id.h"
#include "gpu/command_buffer/service/service_discardable_manager.h"
#include "gpu/command_buffer/service/shader_translator_cache.h"
#include "gpu/command_buffer/service/shared_image_manager.h"
#include "gpu/config/gpu_feature_info.h"
#include "gpu/config/gpu_preferences.h"
#include "gpu/ipc/gl_in_process_context_export.h"
#include "ui/gl/gl_surface_format.h"
namespace gl {
class GLShareGroup;
namespace gpu {
class MailboxManager;
class SyncPointManager;
namespace gles2 {
class Outputter;
class ProgramCache;
} // namespace gles2
// Provides accessors for GPU service objects and the serializer interface to
// the GPU thread used by InProcessCommandBuffer.
class GL_IN_PROCESS_CONTEXT_EXPORT CommandBufferTaskExecutor {
// Represents a single task execution sequence. Tasks posted to a sequence are
// run in order. Tasks across sequences should be synchronized using sync
// tokens. Destroying the sequence will drop tasks which haven't been executed
// yet.
virtual ~Sequence() {}
// Returns identifier used for identifying sync tokens with this sequence,
// and for scheduling.
virtual SequenceId GetSequenceId() = 0;
// Returns true if sequence should yield while running its current task.
virtual bool ShouldYield() = 0;
// Schedule a task with provided sync token dependencies. The dependencies
// are hints for sync token waits within the task, and can be ignored by the
// implementation.
virtual void ScheduleTask(base::OnceClosure task,
std::vector<SyncToken> sync_token_fences) = 0;
// Continue running the current task after yielding execution.
virtual void ContinueTask(base::OnceClosure task) = 0;
CommandBufferTaskExecutor(const GpuPreferences& gpu_preferences,
const GpuFeatureInfo& gpu_feature_info,
SyncPointManager* sync_point_manager,
MailboxManager* mailbox_manager,
scoped_refptr<gl::GLShareGroup> share_group,
gl::GLSurfaceFormat share_group_surface_format,
SharedImageManager* shared_image_manager,
gles2::ProgramCache* program_cache);
virtual ~CommandBufferTaskExecutor();
// Always use virtualized GL contexts if this returns true.
virtual bool ForceVirtualizedGLContexts() const = 0;
// Creates a memory tracker for the context group if this returns true.
virtual bool ShouldCreateMemoryTracker() const = 0;
// Schedules |task| to run out of order with respect to other sequenced tasks.
virtual void ScheduleOutOfOrderTask(base::OnceClosure task) = 0;
// Schedules |task| to run at an appropriate time for performing delayed work.
virtual void ScheduleDelayedWork(base::OnceClosure task) = 0;
// Returns a new task execution sequence. Sequences should not outlive the
// task executor.
virtual std::unique_ptr<Sequence> CreateSequence() = 0;
// Called if InProcessCommandBuffer is not passed a client TaskRunner.
virtual void PostNonNestableToClient(base::OnceClosure callback) = 0;
const GpuPreferences& gpu_preferences() const { return gpu_preferences_; }
const GpuFeatureInfo& gpu_feature_info() const { return gpu_feature_info_; }
gl::GLSurfaceFormat share_group_surface_format() const {
return share_group_surface_format_;
SyncPointManager* sync_point_manager() const { return sync_point_manager_; }
MailboxManager* mailbox_manager() const { return mailbox_manager_; }
// Not const because these return inner pointers.
gles2::ImageManager* image_manager() { return &image_manager_; }
ServiceDiscardableManager* discardable_manager() {
return &discardable_manager_;
PassthroughDiscardableManager* passthrough_discardable_manager() {
return &passthrough_discardable_manager_;
gles2::ShaderTranslatorCache* shader_translator_cache() {
return &shader_translator_cache_;
gles2::FramebufferCompletenessCache* framebuffer_completeness_cache() {
return &framebuffer_completeness_cache_;
SharedImageManager* shared_image_manager() { return shared_image_manager_; }
// These methods construct accessed fields if not already initialized.
scoped_refptr<gl::GLShareGroup> share_group();
gles2::Outputter* outputter();
gles2::ProgramCache* program_cache();
const GpuPreferences gpu_preferences_;
const GpuFeatureInfo gpu_feature_info_;
SyncPointManager* sync_point_manager_;
MailboxManager* mailbox_manager_;
std::unique_ptr<gles2::Outputter> outputter_;
scoped_refptr<gl::GLShareGroup> share_group_;
gl::GLSurfaceFormat share_group_surface_format_;
std::unique_ptr<gles2::ProgramCache> owned_program_cache_;
gles2::ProgramCache* program_cache_;
gles2::ImageManager image_manager_;
ServiceDiscardableManager discardable_manager_;
PassthroughDiscardableManager passthrough_discardable_manager_;
gles2::ShaderTranslatorCache shader_translator_cache_;
gles2::FramebufferCompletenessCache framebuffer_completeness_cache_;
SharedImageManager* shared_image_manager_;
// No-op default initialization is used in in-process mode.
GpuProcessActivityFlags activity_flags_;
} // namespace gpu