getParameter method

Object getParameter(
  1. String name
)

Effective value of a declared parameter, boxed as double, int, Vector2, Vector3, Vector4, or Matrix4 matching its declared type. For samplers use getTexture. Throws on an unknown name.

Implementation

Object getParameter(String name) {
  final type = _slot(name, null).type;
  return switch (type) {
    FmatType.float_ => getFloat(name),
    FmatType.int_ => getInt(name),
    FmatType.vec2 => getVec2(name),
    FmatType.vec3 => getVec3(name),
    FmatType.vec4 => getVec4(name),
    FmatType.mat4 => getMat4(name),
    // Samplers are declared separately (see _samplers) and never appear in
    // _layout, so _slot never returns one of these for a plain parameter.
    FmatType.sampler2d ||
    FmatType.samplerCube => throw StateError('unreachable: sampler type'),
  };
}