@animech-public/playcanvas
Version:
PlayCanvas WebGL game engine
19 lines (17 loc) • 549 B
JavaScript
var envAtlasPS = `
const float atlasSize = 512.0;
const float seamSize = 1.0 / atlasSize;
vec2 mapUv(vec2 uv, vec4 rect) {
return vec2(mix(rect.x + seamSize, rect.x + rect.z - seamSize, uv.x),
mix(rect.y + seamSize, rect.y + rect.w - seamSize, uv.y));
}
vec2 mapRoughnessUv(vec2 uv, float level) {
float t = 1.0 / exp2(level);
return mapUv(uv, vec4(0, 1.0 - t, t, t * 0.5));
}
vec2 mapShinyUv(vec2 uv, float level) {
float t = 1.0 / exp2(level);
return mapUv(uv, vec4(1.0 - t, 1.0 - t, t, t * 0.5));
}
`;
export { envAtlasPS as default };