[Bug 104355] VK_FORMAT_A1R5G5B5_UNORM_PACK16 has red and blue swapped

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104355

            Bug ID: 104355
           Summary: VK_FORMAT_A1R5G5B5_UNORM_PACK16 has red and blue
                    swapped
           Product: Mesa
           Version: 17.3
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/intel
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: hrydgard at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: jason at jlekstrand.net

Created attachment 136334
  --> https://bugs.freedesktop.org/attachment.cgi?id=136334&action=edit
Image clearly showing a red/blue swap

The driver appears to swap the red and blue channels of
VK_FORMAT_A1R5G5B5_UNORM_PACK16  textures. As can be seen in the game Tales of
Eternia in my emulator PPSSPP:

https://user-images.githubusercontent.com/1274014/34218237-f0c1981a-e5ad-11e7-9b76-683a344c52fc.png

The game uses RGBA8888 textures for the background and ARGB1555 textures for
the characters. They look a bit blue and ill, which is obviously an R/B channel
swap. The colors are correct with the same code on other Vulkan
implementations, so this points strongly to A1R5G5B5 being defined wrong in the
driver.

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