113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - OpenGL renderer"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_OPENGLRENDERER_OPENGLRENDERPIPELINELAYOUT_HPP
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#define NAZARA_OPENGLRENDERER_OPENGLRENDERPIPELINELAYOUT_HPP
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#include <NazaraUtils/Prerequisites.hpp>
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#include <Nazara/OpenGLRenderer/Config.hpp>
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#include <Nazara/OpenGLRenderer/OpenGLShaderBinding.hpp>
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#include <Nazara/OpenGLRenderer/Wrapper/Context.hpp>
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#include <Nazara/OpenGLRenderer/Wrapper/CoreFunctions.hpp>
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#include <Nazara/Renderer/RenderPipelineLayout.hpp>
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#include <NazaraUtils/Bitset.hpp>
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#include <NZSL/GlslWriter.hpp>
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#include <memory>
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#include <type_traits>
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#include <vector>
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namespace Nz
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{
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class NAZARA_OPENGLRENDERER_API OpenGLRenderPipelineLayout : public RenderPipelineLayout
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{
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friend OpenGLShaderBinding;
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public:
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OpenGLRenderPipelineLayout(RenderPipelineLayoutInfo layoutInfo);
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OpenGLRenderPipelineLayout(const OpenGLRenderPipelineLayout&) = delete;
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OpenGLRenderPipelineLayout(OpenGLRenderPipelineLayout&&) = delete;
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~OpenGLRenderPipelineLayout();
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ShaderBindingPtr AllocateShaderBinding(UInt32 setIndex) override;
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inline const nzsl::GlslWriter::BindingMapping& GetBindingMapping() const;
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inline const RenderPipelineLayoutInfo& GetLayoutInfo() const;
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void UpdateDebugName(std::string_view name) override;
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OpenGLRenderPipelineLayout& operator=(const OpenGLRenderPipelineLayout&) = delete;
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OpenGLRenderPipelineLayout& operator=(OpenGLRenderPipelineLayout&&) = delete;
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private:
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struct DescriptorPool;
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struct SampledTextureDescriptor;
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struct StorageBufferDescriptor;
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struct TextureDescriptor;
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struct UniformBufferDescriptor;
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DescriptorPool& AllocatePool();
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ShaderBindingPtr AllocateFromPool(std::size_t poolIndex, UInt32 setIndex);
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template<typename F> void ForEachDescriptor(std::size_t poolIndex, std::size_t bindingIndex, F&& functor);
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SampledTextureDescriptor& GetSampledTextureDescriptor(std::size_t poolIndex, std::size_t bindingIndex, std::size_t descriptorIndex);
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StorageBufferDescriptor& GetStorageBufferDescriptor(std::size_t poolIndex, std::size_t bindingIndex, std::size_t descriptorIndex);
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TextureDescriptor& GetTextureDescriptor(std::size_t poolIndex, std::size_t bindingIndex, std::size_t descriptorIndex);
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UniformBufferDescriptor& GetUniformBufferDescriptor(std::size_t poolIndex, std::size_t bindingIndex, std::size_t descriptorIndex);
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void Release(ShaderBinding& binding);
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inline void TryToShrink();
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struct SampledTextureDescriptor
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{
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GLuint texture;
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GLuint sampler;
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GL::TextureTarget textureTarget;
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};
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struct StorageBufferDescriptor
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{
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GLuint buffer;
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GLintptr offset;
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GLsizeiptr size;
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};
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struct TextureDescriptor
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{
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GLboolean layered;
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GLenum access;
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GLenum format;
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GLint layer;
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GLint level;
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GLuint texture;
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};
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struct UniformBufferDescriptor
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{
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GLuint buffer;
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GLintptr offset;
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GLsizeiptr size;
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};
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using Descriptor = std::variant<std::monostate, SampledTextureDescriptor, StorageBufferDescriptor, TextureDescriptor, UniformBufferDescriptor>;
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struct DescriptorPool
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{
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using BindingStorage = std::aligned_storage_t<sizeof(OpenGLShaderBinding), alignof(OpenGLShaderBinding)>;
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Bitset<UInt64> freeBindings;
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std::vector<Descriptor> descriptors;
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std::unique_ptr<BindingStorage[]> storage;
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};
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std::size_t m_maxDescriptorCount;
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std::vector<DescriptorPool> m_descriptorPools;
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nzsl::GlslWriter::BindingMapping m_bindingMapping;
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RenderPipelineLayoutInfo m_layoutInfo;
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};
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}
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#include <Nazara/OpenGLRenderer/OpenGLRenderPipelineLayout.inl>
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#endif // NAZARA_OPENGLRENDERER_OPENGLRENDERPIPELINELAYOUT_HPP
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