1 /* 2 * Copyright 2022 Google LLC 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef skgpu_graphite_SynchronizeToCpuTask_DEFINED 9 #define skgpu_graphite_SynchronizeToCpuTask_DEFINED 10 11 #include "src/gpu/graphite/Buffer.h" 12 #include "src/gpu/graphite/Task.h" 13 14 namespace skgpu::graphite { 15 16 class Buffer; 17 18 /** 19 * Task that synchronizes the contents of a buffer from the GPU to the CPU. This task ensures that 20 * all modifications to the buffer made the GPU are visible from the CPU. This task may not result 21 * in any work if the underlying buffer does not require synchronization (e.g. a shared memory 22 * buffer). 23 */ 24 class SynchronizeToCpuTask final : public Task { 25 public: 26 static sk_sp<SynchronizeToCpuTask> Make(sk_sp<Buffer>); 27 ~SynchronizeToCpuTask() override; 28 prepareResources(ResourceProvider *,const RuntimeEffectDictionary *)29 bool prepareResources(ResourceProvider*, const RuntimeEffectDictionary*) override { 30 return true; 31 } 32 33 bool addCommands(Context*, CommandBuffer*, ReplayTargetData) override; 34 35 private: SynchronizeToCpuTask(sk_sp<Buffer> buffer)36 explicit SynchronizeToCpuTask(sk_sp<Buffer> buffer) : fBuffer(std::move(buffer)) {} 37 38 sk_sp<Buffer> fBuffer; 39 }; 40 41 } // namespace skgpu::graphite 42 43 #endif // skgpu_graphite_SynchronizeToCpuTask_DEFINED 44