message: BF: Always overriding alpha for surfaces.
diff: @@ -66,7 +66,7 @@ export function addMaterial(frag: FragmentShaderBuilder): void {
  frag.addUniform("u_matAlpha", VariableType.Vec2, (prog) => {
  prog.addGraphicUniform("u_matAlpha", (uniform, _params) => {
  // ###TODO Materials...
  - const matAlpha = [1, 1];
  + const matAlpha = [1, 0];
  uniform.setUniform2fv(matAlpha);
  });
  });
  