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 teach glTexImage2D to choose that instead. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99185 Chad Versace (3): dri: Add __DRI_IMAGE_FORMAT_ARGB1555 mesa/texformat: Handle GL_RGBA + GL_UNSIGNED_SHORT_5_5_5_1 i965: Allow import/export of ARGB1555 images include/GL/internal/dri_interface.h | 2 ++ src/mesa/drivers/dri/common/dri_util.c | 4 ++++ src/mesa/drivers/dri/i965/intel_screen.c | 6 ++++++ src/mesa/main/texformat.c | 2 ++ 4 files changed, 14 insertions(+) -- 2.11.0 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
