playcanvas

Version:

Open-source WebGL/WebGPU 3D engine for the web

28 lines (27 loc) • 604 B

JavaScript

var blurVSM_default = `
varying vec2 vUv0;
uniform sampler2D source;
uniform vec2 pixelOffset;
#ifdef GAUSS
	uniform float weight[{SAMPLES}];
#endif
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));
		#ifdef GAUSS
			moments += c.xyz * weight[i];
		#else
			moments += c.xyz;
		#endif
	}
	#ifndef GAUSS
		moments *= 1.0 / float({SAMPLES});
	#endif
	gl_FragColor = vec4(moments.x, moments.y, moments.z, 1.0);
}
`;
export {
	blurVSM_default as default
};