// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// 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 VK_PIPELINE_LAYOUT_HPP_
#define VK_PIPELINE_LAYOUT_HPP_

#include "VkDescriptorSetLayout.hpp"

namespace vk
{

class PipelineLayout : public Object<PipelineLayout, VkPipelineLayout>
{
public:
	PipelineLayout(const VkPipelineLayoutCreateInfo* pCreateInfo, void* mem);
	~PipelineLayout() = delete;
	void destroy(const VkAllocationCallbacks* pAllocator);

	static size_t ComputeRequiredAllocationSize(const VkPipelineLayoutCreateInfo* pCreateInfo);

	size_t getNumDescriptorSets() const;
	DescriptorSetLayout const* getDescriptorSetLayout(size_t descriptorSet) const;

	// Returns the starting index into the pipeline's dynamic offsets array for
	// the given descriptor set.
	uint32_t getDynamicOffsetBase(size_t descriptorSet) const;

private:
	uint32_t              setLayoutCount = 0;
	DescriptorSetLayout** setLayouts = nullptr;
	uint32_t              pushConstantRangeCount = 0;
	VkPushConstantRange*  pushConstantRanges = nullptr;
	uint32_t*             dynamicOffsetBases = nullptr; // Base offset per set layout.
};

static inline PipelineLayout* Cast(VkPipelineLayout object)
{
	return reinterpret_cast<PipelineLayout*>(object);
}

} // namespace vk

#endif // VK_PIPELINE_LAYOUT_HPP_