1 /* 2 * Copyright 2021 Google Inc. 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_Buffer_DEFINED 9 #define skgpu_graphite_Buffer_DEFINED 10 11 #include "include/gpu/GpuTypes.h" 12 #include "src/gpu/graphite/Resource.h" 13 #include "src/gpu/graphite/ResourceTypes.h" 14 15 namespace skgpu::graphite { 16 17 class Buffer : public Resource { 18 public: size()19 size_t size() const { return fSize; } 20 21 // TODO(b/262249983): Separate into mapRead(), mapWrite() methods. 22 // If the buffer is already mapped then pointer is returned. If an asyncMap() was started then 23 // it is waited on. Otherwise, a synchronous map is performed. 24 void* map(); 25 // Starts a new asynchronous map. 26 void asyncMap(GpuFinishedProc = nullptr, GpuFinishedContext = nullptr); 27 // If the buffer is mapped then unmaps. If an async map is pending then it is cancelled. 28 void unmap(); 29 isMapped()30 bool isMapped() const { return fMapPtr; } 31 32 // Returns true if mapped or an asyncMap was started and hasn't been completed or canceled. 33 virtual bool isUnmappable() const; 34 getResourceType()35 const char* getResourceType() const override { return "Buffer"; } 36 37 protected: 38 Buffer(const SharedContext* sharedContext, 39 size_t size, 40 bool commandBufferRefsAsUsageRefs = false) Resource(sharedContext,Ownership::kOwned,skgpu::Budgeted::kYes,size,commandBufferRefsAsUsageRefs)41 : Resource(sharedContext, 42 Ownership::kOwned, 43 skgpu::Budgeted::kYes, 44 size, 45 /*commandBufferRefsAsUsageRefs=*/commandBufferRefsAsUsageRefs) 46 , fSize(size) {} 47 48 void* fMapPtr = nullptr; 49 50 private: 51 virtual void onMap() = 0; 52 virtual void onAsyncMap(GpuFinishedProc, GpuFinishedContext); 53 virtual void onUnmap() = 0; 54 55 size_t fSize; 56 }; 57 58 } // namespace skgpu::graphite 59 60 #endif // skgpu_graphite_Buffer_DEFINED 61