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include/engine/core/shader_input.h

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+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__NSHADERINPUT__
+#define	__NSHADERINPUT__
+
+
+		#include "math/vector.h"
+		#include "nstring/nstring.h"
+
+
+namespace GS {
+	namespace Core {
+
+/// Shader input.
+struct	ShaderInput
+{
+enum	Type
+{
+	None				=	0,
+
+	Uniform,			///< User programmed shader variable.
+	Attribute			///< User bound shader input stream.
+};
+
+enum	Semantic		// do not reorder!
+{
+	// Data attributes.
+	Position			=	0,
+	Normal,
+	UV0,
+	UV1,
+	UV2,
+	VertexColor,
+	Tangent,
+	Bitangent,
+	BoneIndex,
+	BoneWeight,
+
+	// Data uniforms.
+	Constant,
+
+	Texture2D,
+	Texture3D,
+	TextureCube,
+
+	Clock,
+	TimeOfDay,			///< Environment time of day (eg. skybox)
+	ViewVector,
+	ViewPosition,
+	Viewport,
+	ZNear,
+	ZFar,
+	ZoomFactor,
+	FxScale,
+	InverseBufferSize,
+	InverseViewportSize,
+	DisplayBufferRatio,
+	ViewportRatio,
+	ViewDepthOffset,
+	AmbientColor,
+	FogColor,
+	FogNear,
+	FogFar,
+	FogInverseRange,
+	DepthBuffer,
+	FrameBuffer,
+	GBuffer0,
+	GBuffer1,
+	GBuffer2,
+	GBuffer3,
+	NoiseMap,
+
+	NormalMatrix,
+	NormalViewMatrix,
+	ModelMatrix,
+	ViewMatrix,
+	ProjectionMatrix,
+	ModelViewMatrix,
+	ModelViewProjectionMatrix,
+	InverseViewProjectionMatrix,
+	InverseViewProjectionMatrixAtOrigin, // precision hack
+
+	PreviousModelViewMatrix,
+	PreviousModelViewProjectionMatrix,
+
+	MaterialOpacity,
+
+	MaterialDiffuse,
+	MaterialSpecular,
+	MaterialSelf,
+	MaterialAmbient,
+	MaterialGlossiness,
+	MaterialReflection,
+	MaterialAlphaThreshold,
+	MaterialDepthBias,
+	MaterialTexture0,
+	MaterialTexture1,
+	MaterialTexture2,
+	MaterialTexture3,
+	MaterialTexture4,
+	MaterialTexture5,
+	MaterialTexture6,
+	MaterialTexture7,
+
+	LightRange,
+	LightSpotEdge,
+	LightSpotCone,
+	LightShadowBias,
+	LightDiffuseColor,
+	LightSpecularColor,
+	LightShadowColor,
+	LightViewPosition,
+	LightViewDirection,
+	LightShadowMatrix0,
+	LightShadowMatrix1,
+	LightShadowMatrix2,
+	LightShadowMatrix3,
+	LightShadowMatrix4,
+	LightShadowMatrix5,
+	InverseShadowMapSize,
+	LightShadowMap0,
+	LightShadowMap1,
+	LightShadowMap2,
+	LightShadowMap3,
+	LightShadowMap4,
+	LightShadowMap5,
+	LightPSSMSliceDistance0,
+	LightPSSMSliceDistance1,
+	LightPSSMSliceDistance2,
+	LightPSSMSliceDistance3,
+	ViewToLightMatrix,
+	LightProjectionMap,
+
+	BoneMatrix,
+	PreviousBoneMatrix,
+
+	LastSemantic
+};
+
+enum	Category
+{
+	CategoryVertexStream			=	0,	// keep as category 0
+	CategoryConstant,
+	CategoryTexture,
+	CategorySkin,
+	CategoryRenderer,
+	CategoryMaterialOpacity,
+	CategoryMaterial,
+	CategoryTransform,
+	CategoryPreviousTransform,
+	CategoryLight,
+
+	CategoryLast
+};
+
+static	const char		*GetCategoryName(Category);
+
+enum	Precision
+{
+	NoP					=	0,
+
+	LowP,
+	MediumP,
+	HighP
+};
+
+enum	DataType		// do not reorder!
+{
+	NoData				=	(1 << 0),
+	Int					=	(1 << 1),
+	Float				=	(1 << 2),
+	Vector2				=	(1 << 3),
+	Vector3				=	(1 << 4),
+	Vector4				=	(1 << 5),
+	Matrix3				=	(1 << 6),
+	Matrix4				=	(1 << 7),
+	DataTexture2D		=	(1 << 8),
+	DataTexture3D		=	(1 << 9),
+	DataTextureCube		=	(1 << 10),
+	DataTextureShadow	=	(1 << 11)
+};
+
+struct	SemanticDesc
+{
+	const char	*name;
+	Category	category;
+	DataType	data_type;
+	Precision	precision;
+};
+
+static	SemanticDesc	semantic_desc[LastSemantic + 1];
+
+		bool			ConsumesTextureUnit() const;
+
+enum	Scope
+{
+		Vertex			=	(1 << 0),
+		Pixel			=	(1 << 1),
+		Geometry		=	(1 << 2)
+};
+
+		String			name;
+
+		int				scope;
+		Type			type;
+		Semantic		semantic;
+		uint			array_size;
+
+		String			parm_t;
+		GS::Vector4		parm_v;		///< 16B vector
+
+		ShaderInput::DataType data_type;
+
+		ShaderInput();
+};
+
+	} //Core
+} // GS
+
+
+#endif	// __NSHADERINPUT__