Shader.hpp

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#pragma once
#include <Core/Core.hpp>
#include "RHICore/Common.hpp"
 
namespace Foundation::RenderCore {
    using namespace Core;
    class Shader {
        Allocator* mAllocator;        
        void ParseSPIRV(Span<const char> bytecode);
        void Sort();
    public:
        struct Entrypoint {
            String name;
            RHI::RHIShaderStage stage{};
            // Applies to Compute, Task and Mesh shaders
            Tuple<uint32_t, uint32_t, uint32_t> groupLocalSize{};
        };
        Vector<Entrypoint> mEntrypoints;
        struct Binding {
            String name;
            uint32_t descriptorSet;
            uint32_t binding;
        };
        Vector<Binding> mBindings;
        struct PushConstant {
            String name;
            // TODO: add size, offset, type info?
            // This would require us to parse all OpType.. instructions however.
            // Caller is also expected to know the layout of push constants - TODO for now.                      
        };
        Vector<PushConstant> mPushConstants;
        Shader(Span<const char> bytecode, Allocator* alloc);
 
        [[nodiscard]] String DbgDumpShaderInfo() const;
    };
}