Commit 584f1b78cc48094744b6d1957ac8e51c8a36f8a5
2021-10-14T17:55:47
metal: fix crash when checking for flat attributes We can frontload the check of whether or not a shader program uses flat interpolation for its attributes. This prevents a crash where an application does: glAttachShader glLinkProgram glDetachShader glDeleteShader and the check tries to look at the shader attachments (which are no longer valid). Also add some tests to ensure that detaching shaders after program link doesn't cause crashes on indexed draws, and that the flat attribute detection works across program save/load. Bug: angleproject:6526 Signed-off-by: Steven Noonan <steven@valvesoftware.com> Change-Id: I70990808fdfd17608b4b720461cae1a0bdd064b8 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3224663 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Kyle Piddington <kpiddington@apple.com> Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com>