[Bug 101956] segfault when calling vkGetPhysicalDeviceFormatProperties with VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101956

--- Comment #1 from Jason Ekstrand <jason at jlekstrand.net> ---
Created attachment 133083
  --> https://bugs.freedesktop.org/attachment.cgi?id=133083&action=edit
Patch to try

Is it even valid to pass VK_FORMAT_PVRT1_2BPP_UNORM_BLOCK_IMG into the driver
if it doesn't support the relevant extension?  I guess if it's a device
extension, we wouldn't be able to rely on that for a PhysicalDevice query. 
I've attached a driver patch that should make us handle it correctly anyway. 
Mind giving it a try?

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