mesa: enable msaa in clear_with_quad if needed
If the DrawBuffer sample count is > 1 and msaa is enabled we must also enable msaa when clearing it.
Fixes: ea5b7de1 ("radeonsi: make gl_SampleMaskIn = 0x1 when MSAA is disabled") Closes: #1991 (closed)
If the DrawBuffer sample count is > 1 and msaa is enabled we must also enable msaa when clearing it.
Fixes: ea5b7de1 ("radeonsi: make gl_SampleMaskIn = 0x1 when MSAA is disabled") Closes: #1991 (closed)