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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/vulkan_header.h"
#include "src/format.h"
#include "src/value.h"
#include "src/vulkan/buffer.h"
namespace amber {
namespace vulkan {
class Device;
class VertexBuffer {
public:
explicit VertexBuffer(Device* device);
~VertexBuffer();
void Shutdown();
Result SendVertexData(VkCommandBuffer command,
const VkPhysicalDeviceMemoryProperties& properties);
bool VertexDataSent() const { return !is_vertex_data_pending_; }
void SetData(uint8_t location,
const Format& format,
const std::vector<Value>& values);
const std::vector<VkVertexInputAttributeDescription>& GetVertexInputAttr()
const {
return vertex_attr_desc_;
}
VkVertexInputBindingDescription GetVertexInputBinding() 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;
}
size_t GetVertexCount() const {
if (data_.empty())
return 0;
return data_[0].size() / formats_[0].GetComponents().size();
}
void BindToCommandBuffer(VkCommandBuffer command);
// Must be used only for unit tests.
void SetBufferForTest(std::unique_ptr<Buffer> buffer);
private:
Result FillVertexBufferWithData(VkCommandBuffer 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<Buffer> buffer_;
uint32_t stride_in_bytes_ = 0;
std::vector<Format> formats_;
std::vector<std::vector<Value>> data_;
std::vector<VkVertexInputAttributeDescription> vertex_attr_desc_;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_VERTEX_BUFFER_H_
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