source: GTP/trunk/App/Demos/Illum/Standalone/SoftShadowMap [DirectX]/properties.fx @ 1637

//#define SHADOWMAP_SIZE 512.0f                                         // Shadow map size
//#define HALF_TEXEL 0.5f / (float)SHADOWMAP_SIZE       // Size of the half texel
float SHADOWMAP_SIZE;                                                           // Shadow map size
float HALF_TEXEL;                                                                       // Size of the half texel

#define PI 3.14159265f                                                          // Value of PI

float4x4 TexScaleBias;                                                          // Tranformation matrix between light and texture space
float4x4 WorldLight;                                                            // To the light's camera space
float4x4 WorldViewProj;                                                         // To the normalized screen space of the eye camera
float4x4 WorldLightProj;                                                        // To the normalized screen space of the light camera


texture  g_txDefaultTexture;                                            // Default texture of objects
texture  g_txShadowMapColor;                                            // Shadow map texture
texture  g_txShadowMapZ;                                                        // Shadow map texture (Z)
texture  g_txShadowWeight;

float4   g_vMaterial;                                                           // Diffuse color

float g_fFov;                                                                           // FOV of light
float g_fLightSize;                                                                     // Size of light source
float g_fIntensity;                                                                     // Helper
float g_fShadowBias;                                                            // Shadow map bias
float g_fBiasSlope;
float near;                                                                                     // Light source near plane
float far;                                                                                      // Light source far plane
float g_fRealSamples;

int g_iKernelSize;                                                                      // kernel size


bool g_bRenderBaseTexture;

struct VS_INPUT {
        float4 Position : POSITION;                                             // input position in modeling space
        float4 Color    : COLOR0;                                               // input color to be modulated by shadow
        float2 Tex              : TEXCOORD0;
};

struct VS_OUTPUT {
        float4 hPosition  : POSITION;                                   // in normalized device space
        float4 lcPosition : TEXCOORD1;                                  // in light's camera space
        float4 ldPosition : TEXCOORD2;                                  // in light's normalized devide space
        float4 Color      : COLOR0;                                             // input color to be modulated by shadow
        float2 Tex                : TEXCOORD0;
};


// Texture samplers
sampler2D g_samScene = sampler_state
{
    Texture = <g_txDefaultTexture>;
    MinFilter = Point;
    MagFilter = Linear;
    MipFilter = Linear;
};

sampler2D g_ShadowMapColorSampler = sampler_state
{
    Texture = <g_txShadowMapColor>;
    MinFilter = Linear;
    MagFilter = Linear;
    MipFilter = Linear;
    AddressU = Clamp;
    AddressV = Clamp;
};

sampler2D g_ShadowWeightSampler = sampler_state
{
    Texture = <g_txShadowWeight>;
    MinFilter = Linear;
    MagFilter = Linear;
    MipFilter = Linear;
    AddressU = Clamp;
    AddressV = Clamp;
};

sampler2D g_ShadowMapZSampler_Point = sampler_state
{
    Texture = <g_txShadowMapZ>;
    MinFilter = Point;
    MagFilter = Point;
    MipFilter = Point;
    AddressU = Clamp;
    AddressV = Clamp;
};

sampler2D g_ShadowMapZSampler_Linear = sampler_state
{
    Texture = <g_txShadowMapZ>;
    MinFilter = Linear;
    MagFilter = Linear;
    MipFilter = Linear;
    AddressU = Clamp;
    AddressV = Clamp;
};