ComputeTask.h

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/*
 * Copyright 2022 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef skgpu_graphite_task_ComputeTask_DEFINED
#define skgpu_graphite_task_ComputeTask_DEFINED
 
#include "include/private/base/SkTArray.h"
#include "src/gpu/graphite/task/Task.h"
#include "src/gpu/graphite/task/TaskList.h"
 
#include <memory>
 
namespace skgpu::graphite {
 
class DispatchGroup;
 
/**
 * ComputeTask handles preparing and recording DispatchGroups into a series of compute dispatches
 * within a command buffer. It is guaranteed that dispatches within a DispatchGroup will be executed
 * sequentially.
 */
class ComputeTask final : public Task {
public:
    using DispatchGroupList = skia_private::STArray<1, std::unique_ptr<DispatchGroup>>;
 
    static sk_sp<ComputeTask> Make(DispatchGroupList dispatchGroups);
 
    ~ComputeTask() override;
 
    Status prepareResources(ResourceProvider*,
                            ScratchResourceManager*,
                            const RuntimeEffectDictionary*) override;
    Status addCommands(Context*, CommandBuffer*, ReplayTargetData) override;
 
private:
    explicit ComputeTask(DispatchGroupList dispatchGroups);
 
    DispatchGroupList fDispatchGroups;
 
    // Every element of this list is a task that must execute before the DispatchGroup stored at the
    // same array index. Child tasks are allowed to be a nullptr to represent NOP (i.e. the
    // corresponding DispatchGroup doesn't have any pre-tasks).
    skia_private::TArray<sk_sp<Task>> fChildTasks;
};
 
}  // namespace skgpu::graphite
 
#endif  // skgpu_graphite_task_ComputeTask_DEFINED