Previously, we stored an array of up to 16 additional shaders to link,
as well as a count of how many each shader actually needed.
Since the built-in functions rewrite, all the built-ins are stored in a
single shader. So all we need is a boolean indicating whether a shader
needs to link against built-ins or not.
During linking, we can avoid creating the temporary array if none of the
shaders being linked need built-ins. Otherwise, it's simply a copy of
the array that has one additional element. This is much simpler.
This patch saves approximately 128 bytes of memory per gl_shader object.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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