playcanvas

Version:

PlayCanvas WebGL game engine

26 lines (24 loc) • 737 B

JavaScript

var gsplatCenterVS = `
uniform mat4 matrix_model;
uniform mat4 matrix_view;
uniform mat4 matrix_projection;
bool initCenter(vec3 modelCenter, out SplatCenter center) {
	mat4 modelView = matrix_view * matrix_model;
	vec4 centerView = modelView * vec4(modelCenter, 1.0);
	if (centerView.z > 0.0) {
		return false;
	}
	vec4 centerProj = matrix_projection * centerView;
	#if WEBGPU
		centerProj.z = clamp(centerProj.z, 0, abs(centerProj.w));
	#else
		centerProj.z = clamp(centerProj.z, -abs(centerProj.w), abs(centerProj.w));
	#endif
	center.view = centerView.xyz / centerView.w;
	center.proj = centerProj;
	center.projMat00 = matrix_projection[0][0];
	center.modelView = modelView;
	return true;
}
`;

export { gsplatCenterVS as default };