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// Copyright 2018 The Amber Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_VULKAN_VERTEX_BUFFER_H_
#define SRC_VULKAN_VERTEX_BUFFER_H_
#include <memory>
#include <vector>
#include "amber/result.h"
#include "amber/value.h"
#include "amber/vulkan_header.h"
#include "src/buffer.h"
#include "src/format.h"
#include "src/vulkan/transfer_buffer.h"
namespace amber {
namespace vulkan {
class CommandBuffer;
class Device;
class VertexBuffer {
public:
explicit VertexBuffer(Device* device);
~VertexBuffer();
Result SendVertexData(CommandBuffer* command,
const VkPhysicalDeviceMemoryProperties& properties);
bool VertexDataSent() const { return !is_vertex_data_pending_; }
void SetData(uint8_t location, FormatBuffer* buffer);
const std::vector<VkVertexInputAttributeDescription>& GetVkVertexInputAttr()
const {
return vertex_attr_desc_;
}
VkVertexInputBindingDescription GetVkVertexInputBinding() const {
VkVertexInputBindingDescription vertex_binding_desc =
VkVertexInputBindingDescription();
vertex_binding_desc.binding = 0;
vertex_binding_desc.stride = Get4BytesAlignedStride();
vertex_binding_desc.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
return vertex_binding_desc;
}
uint32_t GetVertexCount() const {
if (data_.empty())
return 0;
return data_[0]->GetSize();
}
void BindToCommandBuffer(CommandBuffer* command);
// Must be used only for unit tests.
void SetBufferForTest(std::unique_ptr<TransferBuffer> buffer);
private:
Result FillVertexBufferWithData(CommandBuffer* command);
// Return |stride_in_bytes_| rounded up by 4.
uint32_t Get4BytesAlignedStride() const {
return ((stride_in_bytes_ + 3) / 4) * 4;
}
Device* device_ = nullptr;
bool is_vertex_data_pending_ = true;
std::unique_ptr<TransferBuffer> transfer_buffer_;
uint32_t stride_in_bytes_ = 0;
std::vector<FormatBuffer*> data_;
std::vector<VkVertexInputAttributeDescription> vertex_attr_desc_;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_VERTEX_BUFFER_H_
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