[Bug 99185] dEQP-EGL.functional.image.modify.tex_rgb5_a1_tex_subimage_rgba8

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Dec 22 23:21:53 UTC 2016


--- Comment #1 from Chad Versace <chadversary at chromium.org> ---
The test failed because in
glTexImage2D(format=GL_RGBA, type=GL_UNSIGNED_SHORT_5_5_5_1)
Mesa chose BRW_SURFACE_FORMAT_R8G8B8A8_UNORM as the storage format.
The two formats have incompatible precision in the alpha channel. One
provides binary alpha; the other provides gradient alpha.

Intel hardware supports BRW_SURFACE_FORMAT_B5G5R5A1_UNORM, so we need to teach  
glTexImage2D to choose that instead.

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