We are very close to being able to support this extension. https://www.khronos.org/registry/webgl/extensions/WEBGL_debug_shaders/ However, we fail the conformance test for two related reasons: - when we have not compiled the shader, we should not return any value - if we have compiled shader A, then provided source for B but not compiled, we should return the translated source for A
<rdar://problem/22944318>