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_VulkanBuffer_DEFINED 9 #define skgpu_graphite_VulkanBuffer_DEFINED 10 11 #include "include/gpu/vk/VulkanMemoryAllocator.h" 12 #include "src/gpu/graphite/Buffer.h" 13 #include "src/gpu/graphite/vk/VulkanSharedContext.h" 14 15 namespace skgpu::graphite { 16 17 class VulkanCommandBuffer; 18 19 class VulkanBuffer final : public Buffer { 20 public: 21 static sk_sp<Buffer> Make(const VulkanSharedContext*, size_t, BufferType, AccessPattern); 22 void freeGpuData() override; vkBuffer()23 VkBuffer vkBuffer() const { return fBuffer; } bufferUsageFlags()24 VkBufferUsageFlags bufferUsageFlags() const { return fBufferUsageFlags; } 25 26 void setBufferAccess(VulkanCommandBuffer* buffer, 27 VkAccessFlags dstAccess, 28 VkPipelineStageFlags dstStageMask) const; 29 30 private: 31 VulkanBuffer(const VulkanSharedContext*, 32 size_t, 33 BufferType, 34 AccessPattern, 35 VkBuffer, 36 const skgpu::VulkanAlloc&, 37 VkBufferUsageFlags, 38 Protected isProtected); 39 40 void onMap() override; 41 void onUnmap() override; 42 43 void internalMap(size_t readOffset, size_t readSize); 44 void internalUnmap(size_t flushOffset, size_t flushSize); 45 isMappable()46 bool isMappable() const { return fAlloc.fFlags & skgpu::VulkanAlloc::kMappable_Flag; } 47 vulkanSharedContext()48 const VulkanSharedContext* vulkanSharedContext() const { 49 return static_cast<const VulkanSharedContext*>(this->sharedContext()); 50 } 51 52 VkBuffer fBuffer; 53 skgpu::VulkanAlloc fAlloc; 54 const VkBufferUsageFlags fBufferUsageFlags; 55 mutable VkAccessFlags fCurrentAccess = 0; 56 57 /** 58 * Buffers can either be mapped for: 59 * 1) Reading from the CPU (The effect of writing would be undefined) 60 * 2) Writing from the CPU (The existing contents are discarded. Even in the case where the 61 * initial contents are overwritten, CPU reads should be avoided for performance reasons as 62 * the memory may not be cached). 63 */ 64 bool fBufferUsedForCPURead = false; 65 }; 66 67 } // namespace skgpu::graphite 68 69 #endif // skgpu_graphite_VulkanBuffer_DEFINED 70 71