[Bug 45468] Phase Shift: tails on sustain notes not visible unless GLSL is disabled

https://bugs.winehq.org/show_bug.cgi?id=45468

--- Comment #4 from Henri Verbeet  ---
Possibly, although I don't immediately see a reason to think it would be
incorrect to discard the fragment in that case.

Since you seem to have done some debugging on this already, does it help if you
simply don't generate the alpha-test code? (That's in
shader_glsl_generate_alpha_test().) What is the value of WINED3D_RS_ALPHAREF
set by the application? The value of alpha_test_ref would suggest "3".

Does it also help to set MaxVersionGL without disabling GLSL? When not using
core contexts, we use the fixed function alpha test, instead of doing it in the
shader.