playcanvas

Version:

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

28 lines (27 loc) • 719 B

JavaScript

var sogSH_default = `
#if SH_BANDS > 0
	#ifndef SOG_V2
		uniform float shN_mins;
		uniform float shN_maxs;
	#endif
	void readSHData(out vec3 sh[SH_COEFFS], out float scale) {
		vec4 labels = texelFetch(sh_labels, splat.uv, 0);
		int n = int(labels.x * 255.0 + 0.5) + int(labels.y * 255.0 + 0.5) * 256;
		int u = (n % 64) * SH_COEFFS;
		int v = n / 64;
		for (int i = 0; i < SH_COEFFS; i++) {
			vec4 t = texelFetch(sh_centroids, ivec2(u + i, v), 0);
			#ifdef SOG_V2
				ivec3 idx = ivec3(t.xyz * 255.0 + 0.5);
				sh[i] = vec3(lutShN(idx.x), lutShN(idx.y), lutShN(idx.z));
			#else
				sh[i] = mix(vec3(shN_mins), vec3(shN_maxs), t.xyz);
			#endif
		}
		scale = 1.0;
	}
#endif
`;
export {
	sogSH_default as default
};