1 // Copyright 2018 The Amber Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SRC_VULKAN_TRANSFER_BUFFER_H_ 16 #define SRC_VULKAN_TRANSFER_BUFFER_H_ 17 18 #include <vector> 19 20 #include "amber/result.h" 21 #include "amber/vulkan_header.h" 22 #include "src/format.h" 23 #include "src/vulkan/resource.h" 24 25 namespace amber { 26 namespace vulkan { 27 28 class CommandBuffer; 29 class Device; 30 31 /// Wrapper around a Vulkan VkBuffer object. 32 class TransferBuffer : public Resource { 33 public: 34 TransferBuffer(Device* device, uint32_t size_in_bytes, Format* format); 35 ~TransferBuffer() override; 36 AsTransferBuffer()37 TransferBuffer* AsTransferBuffer() override { return this; } AddUsageFlags(VkBufferUsageFlags flags)38 Result AddUsageFlags(VkBufferUsageFlags flags) { 39 if (buffer_ != VK_NULL_HANDLE) { 40 return Result( 41 "Vulkan: TransferBuffer::AddUsageFlags Usage flags can't be changed " 42 "after initializing the buffer."); 43 } 44 usage_flags_ |= flags; 45 return {}; 46 } 47 Result Initialize() override; GetVkBufferView()48 const VkBufferView* GetVkBufferView() const { return &view_; } 49 GetVkBuffer()50 VkBuffer GetVkBuffer() const { return buffer_; } 51 52 /// Records a command on |command_buffer| to copy the buffer contents from the 53 /// host to the device. 54 void CopyToDevice(CommandBuffer* command_buffer) override; 55 /// Records a command on |command_buffer| to copy the buffer contents from the 56 /// device to the host. 57 void CopyToHost(CommandBuffer* command_buffer) override; 58 59 private: 60 VkBufferUsageFlags usage_flags_ = 0; 61 VkBuffer buffer_ = VK_NULL_HANDLE; 62 VkDeviceMemory memory_ = VK_NULL_HANDLE; 63 VkBufferView view_ = VK_NULL_HANDLE; 64 VkFormat format_ = VK_FORMAT_UNDEFINED; 65 }; 66 67 } // namespace vulkan 68 } // namespace amber 69 70 #endif // SRC_VULKAN_TRANSFER_BUFFER_H_ 71