glsl: only match gl_FragData and not gl_SecondaryFragDataEXT

There's special logic around finding gl_FragData. It latches onto any
array with FRAG_RESULT_DATA0. However gl_SecondaryFragDataEXT[], added
by GL_EXT_blend_func_extended, fits those parameters as well. The real
frag data array should have index 0 though, so we can use that to
distinguish them.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96617
Signed-off-by: Ilia Mirkin <[email protected]>
Cc: "11.1 11.2 12.0" <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

0 files changed, 0 insertions, 0 deletions