33 lines
No EOL
1 KiB
GLSL
33 lines
No EOL
1 KiB
GLSL
#include "shadowLerp.glsl"
|
|
|
|
/*
|
|
contributors: Patricio Gonzalez Vivo
|
|
description: sample shadow map using PCF
|
|
use:
|
|
- <float> sampleShadowPCF(<SAMPLER_TYPE> depths, <vec2> size, <vec2> uv, <float> compare)
|
|
- <float> sampleShadowPCF(<vec3> lightcoord)
|
|
options:
|
|
- LIGHT_SHADOWMAP_BIAS
|
|
- SAMPLESHADOWPCF_SAMPLER_FNC
|
|
license:
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
|
|
*/
|
|
|
|
#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 |