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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_PIPELINE_H_
#define SRC_VULKAN_PIPELINE_H_
#include <memory>
#include <string>
#include <unordered_map>
#include <vector>
#include "amber/result.h"
#include "amber/vulkan_header.h"
#include "src/cast_hash.h"
#include "src/engine.h"
#include "src/vulkan/buffer_backed_descriptor.h"
#include "src/vulkan/command_buffer.h"
#include "src/vulkan/push_constant.h"
namespace amber {
class BufferCommand;
namespace vulkan {
class ComputePipeline;
class Device;
class GraphicsPipeline;
/// Base class for a pipeline in Vulkan.
class Pipeline {
public:
virtual ~Pipeline();
bool IsGraphics() const { return pipeline_type_ == PipelineType::kGraphics; }
bool IsCompute() const { return pipeline_type_ == PipelineType::kCompute; }
GraphicsPipeline* AsGraphics();
ComputePipeline* AsCompute();
Result AddBufferDescriptor(const BufferCommand*);
Result AddSamplerDescriptor(const SamplerCommand*);
/// Add |buffer| data to the push constants at |offset|.
Result AddPushConstantBuffer(const Buffer* buf, uint32_t offset);
/// Reads back the contents of resources of all descriptors to a
/// buffer data object and put it into buffer data queue in host.
Result ReadbackDescriptorsToHostDataQueue();
void SetEntryPointName(VkShaderStageFlagBits stage,
const std::string& entry) {
entry_points_[stage] = entry;
}
CommandBuffer* GetCommandBuffer() const { return command_.get(); }
Device* GetDevice() const { return device_; }
protected:
Pipeline(
PipelineType type,
Device* device,
uint32_t fence_timeout_ms,
const std::vector<VkPipelineShaderStageCreateInfo>& shader_stage_info);
/// Initializes the pipeline.
Result Initialize(CommandPool* pool);
Result GetDescriptorSlot(uint32_t desc_set,
uint32_t binding,
Descriptor** desc);
void UpdateDescriptorSetsIfNeeded();
Result SendDescriptorDataToDeviceIfNeeded();
void BindVkDescriptorSets(const VkPipelineLayout& pipeline_layout);
/// Records a Vulkan command for push contant.
Result RecordPushConstant(const VkPipelineLayout& pipeline_layout);
const std::vector<VkPipelineShaderStageCreateInfo>& GetVkShaderStageInfo()
const {
return shader_stage_info_;
}
const char* GetEntryPointName(VkShaderStageFlagBits stage) const;
uint32_t GetFenceTimeout() const { return fence_timeout_ms_; }
Result CreateVkPipelineLayout(VkPipelineLayout* pipeline_layout);
Device* device_ = nullptr;
std::unique_ptr<CommandBuffer> command_;
private:
struct DescriptorSetInfo {
bool empty = true;
VkDescriptorSetLayout layout = VK_NULL_HANDLE;
VkDescriptorPool pool = VK_NULL_HANDLE;
VkDescriptorSet vk_desc_set = VK_NULL_HANDLE;
std::vector<std::unique_ptr<Descriptor>> descriptors;
};
/// Creates Vulkan descriptor related objects.
Result CreateVkDescriptorRelatedObjectsIfNeeded();
Result CreateDescriptorSetLayouts();
Result CreateDescriptorPools();
Result CreateDescriptorSets();
PipelineType pipeline_type_;
std::vector<DescriptorSetInfo> descriptor_set_info_;
std::vector<VkPipelineShaderStageCreateInfo> shader_stage_info_;
uint32_t fence_timeout_ms_ = 1000;
bool descriptor_related_objects_already_created_ = false;
std::unordered_map<VkShaderStageFlagBits,
std::string,
CastHash<VkShaderStageFlagBits>>
entry_points_;
std::unique_ptr<PushConstant> push_constant_;
};
} // namespace vulkan
} // namespace amber
#endif // SRC_VULKAN_PIPELINE_H_
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