SPIRV-Cross/shaders-msl-no-opt/frag/demote-to-helper.vk.nocompat.msl21.invalid.frag

#version 450
#extension GL_EXT_demote_to_helper_invocation : require

void main()
{
	//demote;	// FIXME: Not implemented for MSL
	bool helper = helperInvocationEXT();
}
Support the SPV_EXT_demote_to_helper_invocation extension. This extension provides a new operation which causes a fragment to be discarded without terminating the fragment shader invocation. The invocation for the discarded fragment becomes a helper invocation, so that derivatives will remain defined. The old `HelperInvocation` builtin becomes undefined when this occurs, so a second new instruction queries the current helper invocation status. This is only fully supported for GLSL. HLSL doesn't support the `IsHelperInvocation` operation and MSL doesn't support the `DemoteToHelperInvocation` op. Fixes #1052. 2019-07-13 20:57:33 +00:00			`#version 450`
			`#extension GL_EXT_demote_to_helper_invocation : require`

			`void main()`
			`{`
			`//demote; // FIXME: Not implemented for MSL`
			`bool helper = helperInvocationEXT();`
			`}`