SPIRV-Cross/reference/opt/shaders-hlsl/frag/demote-to-helper.frag

void frag_main()
{
    discard;
}

void main()
{
    frag_main();
}
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			`void frag_main()`
			`{`
			`discard;`
			`}`

			`void main()`
			`{`
			`frag_main();`
			`}`