https://bugs.freedesktop.org/show_bug.cgi?id=63979

Priority: medium Bug ID: 63979 Assignee: dri-devel@lists.freedesktop.org Summary: s3tc not working with radeonsi driver Severity: normal Classification: Unclassified OS: All Reporter: kallisti5@unixzen.com Hardware: Other Status: NEW Version: git Component: Drivers/Gallium/radeonsi Product: Mesa

s3tc doesn't work when using the radeonsi driver.

Example:

kallisti5@eris ~ :) $ find /usr/lib -name "radeonsi*" /usr/lib/xorg/modules/dri/radeonsi_dri.so

kallisti5@eris ~ :) $ glxinfo | grep renderer OpenGL renderer string: Gallium 0.4 on AMD TAHITI

No EXT_texture_compress (aka s3tc) kallisti5@eris ~ :) $ glxinfo | grep EXT_texture_compress

Move radeonsi driver somewhere else forcing fallback to swpipe:

kallisti5@eris ~ :( $ sudo mv /usr/lib/xorg/modules/dri/radeonsi_dri.so /tmp/

Now using llvmpipe: kallisti5@eris ~ :) $ glxinfo | grep renderer libGL error: failed to load driver: radeonsi libGL error: Try again with LIBGL_DEBUG=verbose for more details. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits)

s3tc now working: kallisti5@eris ~ :) $ glxinfo | grep EXT_texture_compress libGL error: failed to load driver: radeonsi libGL error: Try again with LIBGL_DEBUG=verbose for more details. GL_EXT_texture_array, GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_latc, GL_EXT_texture_compression_rgtc, GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map, kallisti5@eris ~ :) $