@animech-public/playcanvas
Version:
PlayCanvas WebGL game engine
45 lines (43 loc) • 988 B
JavaScript
var blurVSMPS = `
varying vec2 vUv0;
uniform sampler2D source;
uniform vec2 pixelOffset;
uniform float weight[SAMPLES];
float decodeFloatRG(vec2 rg) {
return rg.y*(1.0/255.0) + rg.x;
}
vec2 encodeFloatRG( float v ) {
vec2 enc = vec2(1.0, 255.0) * v;
enc = fract(enc);
enc -= enc.yy * vec2(1.0/255.0, 1.0/255.0);
return enc;
}
void main(void) {
vec3 moments = vec3(0.0);
vec2 uv = vUv0 - pixelOffset * (float(SAMPLES) * 0.5);
for (int i=0; i<SAMPLES; i++) {
vec4 c = texture2D(source, uv + pixelOffset * float(i));
c.xy = vec2(decodeFloatRG(c.xy), decodeFloatRG(c.zw));
moments += c.xyz * weight[i];
moments += c.xyz;
}
moments /= float(SAMPLES);
gl_FragColor = vec4(encodeFloatRG(moments.x), encodeFloatRG(moments.y));
gl_FragColor = vec4(moments.x, moments.y, moments.z, 1.0);
}
`;
export { blurVSMPS as default };