Load a shader with vertex and fragment code file url.
param name- The name of the asset.
param vert- The vertex shader code. Null if not needed.
param frag- The fragment shader code. Null if not needed.
// load only a fragment shader from URL
loadShaderURL("outline", null, "/shaders/outline.glsl")
retunrs The asset data.
since v3000.0
group Assets