LYGIA Shader Library

shadowPCF (lygia/sample/shadowPCF)

sample shadow map using PCF

Dependencies:

Use:

<float> sampleShadowPCF(<SAMPLER_TYPE> depths, <vec2> size, <vec2> uv, <float> compare)

<float> sampleShadowPCF(<vec3> lightcoord)

Check it on Github



#ifndef SAMPLESHADOWPCF_SAMPLER_FNC
#define SAMPLESHADOWPCF_SAMPLER_FNC sampleShadowLerp
#endif

#ifndef FNC_SAMPLESHADOWPCF
#define FNC_SAMPLESHADOWPCF

float sampleShadowPCF(SAMPLER_TYPE depths, vec2 size, vec2 uv, float compare) {
    vec2 pixel = 1.0/size;
    float result = 0.0;
    for (float x= -2.0; x <= 2.0; x++)
        for (float y= -2.0; y <= 2.0; y++) 
            result += SAMPLESHADOWPCF_SAMPLER_FNC(depths, size, uv + vec2(x,y) * pixel, compare);
    return result/25.0;
}

#endif

Dependencies:

Use:

<float> sampleShadowPCF(<SAMPLER_TYPE> depths, <float2> size, <float2> uv, <float> compare)

<float> sampleShadowPCF(<float3> lightcoord)

Check it on Github



#ifndef SAMPLESHADOWPCF_SAMPLER_FNC
#define SAMPLESHADOWPCF_SAMPLER_FNC sampleShadowLerp
#endif

#ifndef FNC_SAMPLESHADOWPCF
#define FNC_SAMPLESHADOWPCF

float sampleShadowPCF(SAMPLER_TYPE depths, float2 size, float2 uv, float compare) {
    float2 pixel = 1.0/size;
    float result = 0.0;
    for (float x= -2.0; x <= 2.0; x++)
        for (float y= -2.0; y <= 2.0; y++) 
            result += SAMPLESHADOWPCF_SAMPLER_FNC(depths, size, uv + float2(x,y) * pixel, compare);
    return result/25.0;
}

#endif

Licenses

LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

It's also possible to get a permanent comercial license hook to a single and specific version of LYGIA.

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