9fe5859d5d
With dual source blending only 1 draw buffer could be used. For zink fixes tests: arb_blend_func_extended-fbo-extended-blend-pattern_gles2 Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com> Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8247>