Graphics: Replace runtime structs offsets by compile-time struct offsets

now that nzsl::FieldOffsets is constexpr this is possible

include/Nazara/Graphics/PredefinedShaderStructBuilder.hpp

@@ -0,0 +1,139 @@
+// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_GRAPHICS_PREDEFINEDSHADERSTRUCTBUILDER_HPP
+#define NAZARA_GRAPHICS_PREDEFINEDSHADERSTRUCTBUILDER_HPP
+
+#include <Nazara/Graphics/Config.hpp>
+#include <NZSL/Math/FieldOffsets.hpp>
+
+namespace Nz
+{
+	struct NAZARA_GRAPHICS_API PredefinedDirectionalLightData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t colorOffset;
+		std::size_t directionOffset;
+		std::size_t invShadowMapSizeOffset;
+		std::size_t ambientFactorOffset;
+		std::size_t diffuseFactorOffset;
+		std::size_t cascadeCountOffset;
+		std::size_t cascadeFarPlanesOffset;
+		std::size_t cascadeViewProjMatricesOffset;
+
+		std::size_t totalSize;
+
+		static constexpr std::size_t MaxLightCascadeCount = 4;
+
+		static constexpr PredefinedDirectionalLightData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedPointLightData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t colorOffset;
+		std::size_t positionOffset;
+		std::size_t invShadowMapSizeOffset;
+		std::size_t ambientFactorOffset;
+		std::size_t diffuseFactorOffset;
+		std::size_t radiusOffset;
+		std::size_t invRadiusOffset;
+
+		std::size_t totalSize;
+
+		static constexpr PredefinedPointLightData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedSpotLightData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t colorOffset;
+		std::size_t directionOffset;
+		std::size_t positionOffset;
+		std::size_t invShadowMapSizeOffset;
+		std::size_t ambientFactorOffset;
+		std::size_t diffuseFactorOffset;
+		std::size_t innerAngleOffset;
+		std::size_t outerAngleOffset;
+		std::size_t invRadiusOffset;
+		std::size_t viewProjMatrixOffset;
+
+		std::size_t totalSize;
+
+		static constexpr PredefinedSpotLightData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedLightData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t directionalLightsOffset;
+		std::size_t pointLightsOffset;
+		std::size_t spotLightsOffset;
+		std::size_t directionalLightCountOffset;
+		std::size_t pointLightCountOffset;
+		std::size_t spotLightCountOffset;
+
+		std::size_t totalSize;
+
+		static constexpr std::size_t MaxLightCount = 3;
+
+		static constexpr PredefinedLightData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedInstanceData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t invWorldMatrixOffset;
+		std::size_t worldMatrixOffset;
+
+		std::size_t totalSize;
+
+		static constexpr PredefinedInstanceData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedSkeletalData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t jointMatricesOffset;
+
+		std::size_t totalSize;
+
+		static constexpr std::size_t MaxMatricesCount = 256;
+
+		static constexpr PredefinedSkeletalData Build();
+	};
+
+	struct NAZARA_GRAPHICS_API PredefinedViewerData
+	{
+		nzsl::FieldOffsets fieldOffsets;
+
+		std::size_t eyePositionOffset;
+		std::size_t invProjMatrixOffset;
+		std::size_t invTargetSizeOffset;
+		std::size_t invViewMatrixOffset;
+		std::size_t invViewProjMatrixOffset;
+		std::size_t projMatrixOffset;
+		std::size_t targetSizeOffset;
+		std::size_t viewMatrixOffset;
+		std::size_t viewProjMatrixOffset;
+		std::size_t nearPlaneOffset;
+		std::size_t farPlaneOffset;
+
+		std::size_t totalSize;
+
+		static constexpr PredefinedViewerData Build();
+	};
+}
+
+#include <Nazara/Graphics/PredefinedShaderStructBuilder.inl>
+
+#endif // NAZARA_GRAPHICS_PREDEFINEDSHADERSTRUCTBUILDER_HPP