playcanvas

Version:

PlayCanvas WebGL game engine

21 lines (19 loc) • 648 B

JavaScript

var gsplatSourceVS = `
attribute vertex_position: vec3f;
attribute vertex_id_attrib: u32;
uniform numSplats: u32;
var splatOrder: texture_2d<u32>;
fn initSource(source: ptr<function, SplatSource>) -> bool {
	let w: u32 = textureDimensions(splatOrder, 0).x;
	source.order = vertex_id_attrib + u32(vertex_position.z);
	if (source.order >= uniform.numSplats) {
		return false;
	}
	let orderUV = vec2i(vec2u(source.order % w, source.order / w));
	source.id = textureLoad(splatOrder, orderUV, 0).r;
	source.uv = vec2i(vec2u(source.id % w, source.id / w));
	source.cornerUV = vertex_position.xy;
	return true;
}
`;

export { gsplatSourceVS as default };