94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
#pragma once
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#include <mbgl/shaders/shader_program_base.hpp>
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#include <mbgl/mtl/mtl_fwd.hpp>
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#include <mbgl/mtl/uniform_block.hpp>
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#include <mbgl/mtl/vertex_attribute.hpp>
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#include <Foundation/NSSharedPtr.hpp>
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#include <optional>
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#include <string>
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#include <unordered_map>
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namespace mbgl {
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namespace shaders {
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struct AttributeInfo {
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constexpr AttributeInfo(std::size_t index_, gfx::AttributeDataType dataType_, std::size_t id_)
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: index(index_),
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dataType(dataType_),
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id(id_) {}
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std::size_t index;
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gfx::AttributeDataType dataType;
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std::size_t id;
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};
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struct UniformBlockInfo {
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constexpr UniformBlockInfo(std::size_t index_, bool vertex_, bool fragment_, std::size_t size_, std::size_t id_)
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: index(index_),
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vertex(vertex_),
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fragment(fragment_),
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size(size_),
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id(id_) {}
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std::size_t index;
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bool vertex;
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bool fragment;
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std::size_t size;
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std::size_t id;
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};
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struct TextureInfo {
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constexpr TextureInfo(std::size_t index_, std::size_t id_)
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: index(index_),
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id(id_) {}
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std::size_t index;
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std::size_t id;
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};
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} // namespace shaders
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namespace mtl {
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class RenderableResource;
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class RendererBackend;
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class ShaderProgram;
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using UniqueShaderProgram = std::unique_ptr<ShaderProgram>;
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class ShaderProgram final : public gfx::ShaderProgramBase {
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public:
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ShaderProgram(std::string name,
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RendererBackend& backend,
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MTLFunctionPtr vertexFunction,
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MTLFunctionPtr fragmentFunction);
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~ShaderProgram() noexcept override;
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static constexpr std::string_view Name{"GenericMTLShader"};
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const std::string_view typeName() const noexcept override { return Name; }
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MTLRenderPipelineStatePtr getRenderPipelineState(const gfx::Renderable&,
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const MTLVertexDescriptorPtr&,
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const gfx::ColorMode& colorMode) const;
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std::optional<size_t> getSamplerLocation(const size_t id) const override;
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const gfx::VertexAttributeArray& getVertexAttributes() const override { return vertexAttributes; }
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const gfx::VertexAttributeArray& getInstanceAttributes() const override { return instanceAttributes; }
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const gfx::UniformBlockArray& getUniformBlocks() const override { return uniformBlocks; }
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gfx::UniformBlockArray& mutableUniformBlocks() override { return uniformBlocks; }
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void initAttribute(const shaders::AttributeInfo&);
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void initInstanceAttribute(const shaders::AttributeInfo&);
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void initUniformBlock(const shaders::UniformBlockInfo&);
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void initTexture(const shaders::TextureInfo&);
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protected:
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std::string shaderName;
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RendererBackend& backend;
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MTLFunctionPtr vertexFunction;
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MTLFunctionPtr fragmentFunction;
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UniformBlockArray uniformBlocks;
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VertexAttributeArray vertexAttributes;
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VertexAttributeArray instanceAttributes;
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std::array<std::optional<size_t>, shaders::maxTextureCountPerShader> textureBindings;
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};
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} // namespace mtl
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} // namespace mbgl
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