playcanvas/build/playcanvas/src/scene/shader-lib/wgsl/chunks/gsplat/vert/gsplatCenter.js

PlayCanvas WebGL game engine

var gsplatCenterVS = `
uniform matrix_model: mat4x4f;
uniform matrix_view: mat4x4f;
#ifndef GSPLAT_CENTER_NOPROJ
	uniform matrix_projection: mat4x4f;
#endif
fn initCenter(modelCenter: vec3f, center: ptr<function, SplatCenter>) -> bool {
	let modelView: mat4x4f = uniform.matrix_view * uniform.matrix_model;
	let centerView: vec4f = modelView * vec4f(modelCenter, 1.0);
	#ifndef GSPLAT_CENTER_NOPROJ
		if (centerView.z > 0.0) {
			return false;
		}
		var centerProj: vec4f = uniform.matrix_projection * centerView;
		centerProj.z = clamp(centerProj.z, 0.0, abs(centerProj.w));
		center.proj = centerProj;
		center.projMat00 = uniform.matrix_projection[0][0];
	#endif
	center.view = centerView.xyz / centerView.w;
	center.modelView = modelView;
	return true;
}
`;

export { gsplatCenterVS as default };