MaterialInspector.hpp

#pragma once
 
#include <filesystem>
#include <string>
#include <vector>
 
#include <rapidjson/document.h>
 
#include <Common/ResourcePipeline/Uuid.hpp>
#include <Editor/AssetRegistry.hpp>
 
namespace Grindstone {
    class EngineCore;
 
    namespace Editor {
        namespace ImguiEditor {
            class ImguiEditor;
 
            struct Sampler {
                std::string name;
                Uuid value;
                std::string valueName;
                bool isSet;
 
                Sampler(const char* samplerName) : name(samplerName), isSet(false) {}
            };
 
            struct MaterialParameter {
                std::string path;
            };
 
            class MaterialInspector {
            public:
                MaterialInspector(EngineCore* engineCore, ImguiEditor* imguiEditor);
                void SetMaterialPath(const std::filesystem::path& materialPath);
                void Render();
            private:
                enum class ShaderLoadStatus {
                    Unassigned = 0,
                    InvalidPath,
                    NoFileFound,
                    InvalidShader,
                    ValidShader
                };
                void ReloadAvailableShaders();
                bool TryLoadShaderReflection(Uuid& shaderUuid);
                void LoadShaderTextures(rapidjson::Value& texturesArray);
                void LoadShaderUniformBuffers(rapidjson::Value& uniformBuffers);
                void LoadMaterialSamplers(rapidjson::Value& samplers);
                void RenderTextures();
                void RenderParameters();
                void OnSelectedTexture(Uuid uuid, std::string name);
                void RenderTexture(Sampler& sampler);
                void RenderParameter(MaterialParameter& parameter);
                void SaveMaterial();
                std::filesystem::path materialPath;
                std::string filename;
                std::string materialName;
                Uuid shaderUuid;
                std::string shaderName;
                std::vector<Sampler> samplers;
                std::vector<MaterialParameter> parameters;
                std::vector<AssetRegistry::Entry> availableShaders;
                EngineCore* engineCore;
                ImguiEditor* imguiEditor = nullptr;
                Sampler* selectedSampler = nullptr;
                ShaderLoadStatus shaderLoadStatus = ShaderLoadStatus::Unassigned;
                bool hasBeenChanged = false;
 
                struct MaterialUniformBuffer {
                    struct Member {
                        std::string name;
                        size_t offset = 0;
                        size_t memberSize = 0;
                        Member() = default;
                        Member(
                            std::string name,
                            size_t offset,
                            size_t memberSize
                        ) : name(name), offset(offset), memberSize(memberSize) {}
                    };
                    std::string name;
                    size_t bindingId = 0;
                    size_t bufferSize = 0;
                    std::vector<Member> members;
                    MaterialUniformBuffer() = default;
                    MaterialUniformBuffer(
                        std::string name,
                        size_t bindingId,
                        size_t bufferSize
                    ) : name(name), bindingId(bindingId), bufferSize(bufferSize) {}
                };
 
                std::vector<MaterialUniformBuffer> materialUniformBuffers;
            };
        }
    }
}