//----------------------------------------------------------------------------------
// File:        FaceWorks/samples/sample_d3d11/shaders/common.hlsli
// SDK Version: v1.0
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// Site:        http://developer.nvidia.com/
//
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#ifndef COMMON_HLSLI
#define COMMON_HLSLI

#pragma pack_matrix(row_major)

#include "resources.h"

struct Vertex
{
	float3		m_pos		: POSITION;
	float3		m_normal	: NORMAL;
	float2		m_uv		: UV;
	float3		m_tangent	: TANGENT;
	float		m_curvature : CURVATURE;
};

cbuffer cbDebug : CB_DEBUG		// matches struct CbufDebug in util.h
{
	float		g_debug;			// Mapped to spacebar - 0 if up, 1 if down
	float		g_debugSlider0;		// Mapped to debug slider in UI
	float		g_debugSlider1;		// ...
	float		g_debugSlider2;		// ...
	float		g_debugSlider3;		// ...
}

cbuffer cbFrame : CB_FRAME					// matches struct CbufFrame in util.h
{
	float4x4	g_matWorldToClip;
	float3		g_posCamera;

	float3		g_vecDirectionalLight;
	float3		g_rgbDirectionalLight;

	float4x4	g_matWorldToUvzwShadow;
	float3x3	g_matWorldToUvzShadowNormal;	// Matrix for transforming normals to shadow map space
	float		dummy;						// Padding

	float		g_vsmMinVariance;			// Minimum variance for variance shadow maps
	float		g_shadowSharpening;
	float		g_tessScale;				// Scale of adaptive tessellation

	float		g_deepScatterIntensity;		// Multiplier on whole deep scattering result
	float		g_deepScatterNormalOffset;	// Normal offset for shadow lookup to calculate thickness

	float		g_exposure;					// Exposure multiplier
}

TextureCube<float3> g_texCubeDiffuse	: TEX_CUBE_DIFFUSE;
TextureCube<float3> g_texCubeSpec		: TEX_CUBE_SPEC;
Texture2D<float> g_texShadowMap			: TEX_SHADOW_MAP;
Texture2D<float2> g_texVSM				: TEX_VSM;
Texture2D g_texCurvatureLUT				: TEX_CURVATURE_LUT;
Texture2D g_texShadowLUT				: TEX_SHADOW_LUT;

SamplerState g_ssPointClamp				: SAMP_POINT_CLAMP;
SamplerState g_ssBilinearClamp			: SAMP_BILINEAR_CLAMP;
SamplerState g_ssTrilinearRepeat		: SAMP_TRILINEAR_REPEAT;
SamplerState g_ssTrilinearRepeatAniso	: SAMP_TRILINEAR_REPEAT_ANISO;
SamplerComparisonState g_scsPCF			: SAMP_PCF;

float square(float x) { return x*x; }

#endif // COMMON_HLSLI