1 /* 2 * Copyright 2018 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 GrMtlBuffer_DEFINED 9 #define GrMtlBuffer_DEFINED 10 11 #include "src/gpu/GrGpuBuffer.h" 12 #include "src/gpu/mtl/GrMtlUniformHandler.h" 13 14 #import <Metal/Metal.h> 15 16 class GrMtlCaps; 17 class GrMtlGpu; 18 19 class GrMtlBuffer: public GrGpuBuffer { 20 public: 21 static sk_sp<GrMtlBuffer> Make(GrMtlGpu*, size_t size, GrGpuBufferType intendedType, 22 GrAccessPattern, const void* data = nullptr); 23 24 ~GrMtlBuffer() override; 25 mtlBuffer()26 id<MTLBuffer> mtlBuffer() const { return fMtlBuffer; } offset()27 size_t offset() const { return fOffset; } 28 void bind(); // for initial binding of XferGpuToCpu buffers 29 30 protected: 31 GrMtlBuffer(GrMtlGpu*, size_t size, GrGpuBufferType intendedType, GrAccessPattern); 32 33 void onAbandon() override; 34 void onRelease() override; 35 36 private: 37 GrMtlGpu* mtlGpu() const; 38 39 void onMap() override; 40 void onUnmap() override; 41 bool onUpdateData(const void* src, size_t srcSizeInBytes) override; 42 43 void internalMap(size_t sizeInBytes); 44 void internalUnmap(size_t sizeInBytes); 45 46 #ifdef SK_DEBUG 47 void validate() const; 48 #endif 49 50 bool fIsDynamic; 51 id<MTLBuffer> fMtlBuffer; 52 size_t fOffset; // offset into shared buffer for dynamic buffers 53 id<MTLBuffer> fMappedBuffer; // buffer used by static buffers for uploads 54 55 typedef GrGpuBuffer INHERITED; 56 }; 57 58 #endif 59