@animech-public/playcanvas
Version:
PlayCanvas WebGL game engine
16 lines (13 loc) • 580 B
JavaScript
var packDepthPS = /* glsl */`
// Packing a float in GLSL with multiplication and mod
// http://blog.gradientstudios.com/2012/08/23/shadow-map-improvement
vec4 packFloat(float depth) {
const vec4 bit_shift = vec4(256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0);
const vec4 bit_mask = vec4(0.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0);
// combination of mod and multiplication and division works better
vec4 res = mod(depth * bit_shift * vec4(255), vec4(256) ) / vec4(255);
res -= res.xxyz * bit_mask;
return res;
}
`;
export { packDepthPS as default };