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authorKenneth Graunke <kenneth@whitecape.org>2015-12-07 17:58:35 -0800
committerKenneth Graunke <kenneth@whitecape.org>2015-12-22 17:22:10 -0800
commit01b1b44d31adde3954d1f1404ca66f90d87d4ae5 (patch)
tree88c929480a8730d50ab69cbb81e4032ffe96b2a5 /doxygen/gbm.doxy
parent8bc073d6014d1e5d8b4a23020573abbd038f893a (diff)
i965: Defer input lowering for tessellation stages until specialization.
With tessellation shaders and SSO, we won't be able to always decide on VUE map layouts at LinkProgram time. Unfortunately, we have to delay it until shader specialization time. However, uniform lowering cannot be deferred - brw_codegen_*_prog() reads nir->num_uniforms. Fortunately, we don't need to defer it - uniform, system value, atomic, and sampler lowering can safely stay where it is. This patch moves those to brw_lower_nir()'s only caller, renames brw_lower_nir() to brw_nir_lower_io(), and introduces calls to that. For non-tessellation stages, I chose to call brw_nir_lower_io() from brw_create_nir(), so it's still done at the same time. There's no need to defer it, and doing it at LinkProgram time is nice. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
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