playcanvas

Version:
PlayCanvas WebGL game engine
31 lines (29 loc) • 815 B
JavaScript
var blurVSMPS = `
varying vUv0: vec2f;
var source: texture_2d<f32>;
var sourceSampler: sampler;
#ifdef GAUSS
	uniform weight: array<f32, {SAMPLES}>;
#endif
uniform pixelOffset: vec2f;
@fragment
fn fragmentMain(input: FragmentInput) -> FragmentOutput {
	var output: FragmentOutput;
	var moments: vec3f = vec3f(0.0);
	let uv: vec2f = input.vUv0 - uniform.pixelOffset * (f32({SAMPLES}) * 0.5);
	for (var i: i32 = 0; i < {SAMPLES}; i = i + 1) {
		let c: vec4f = textureSample(source, sourceSampler, uv + uniform.pixelOffset * f32(i));
		#ifdef GAUSS
			moments = moments + c.xyz * uniform.weight[i].element;
		#else
			moments = moments + c.xyz;
		#endif
	}
	#ifndef GAUSS
		moments = moments * (1.0 / f32({SAMPLES}));
	#endif
	output.color = vec4f(moments, 1.0);
	return output;
}
`;

export { blurVSMPS as default };