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	Commit message (Collapse)	Author	Age	Files	Lines
*	glsl: Pack flat "varyings" of mixed types together.	Paul Berry	2013-01-08	1	-8/+87
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This patch enhances the varying packing code so that flat varyings of uint, int, and float types can be packed together. We accomplish this in lower_packed_varyings.cpp by making the type of all flat varyings ivec4, and then using information-preserving type conversions (e.g. ir_unop_bitcast_f2i) to convert all other types to ints. The varying_matches::compute_packing_class() function is updated to reflect the fact that varying packing no longer needs to segregate varyings of different base types. Fixes piglit test varying-packing-mixed-types. Reviewed-by: Kenneth Graunke <[email protected]> v2: Split lower_packed_varyings_visitor::bitwise_assign into pack/unpack variants.
*	glsl: Add a lowering pass for packing varyings.	Paul Berry	2012-12-14	1	-0/+364
	This lowering pass generates GLSL code that manually packs varyings into vec4 slots, for the benefit of back-ends that don't support packed varyings natively. No functional change--the lowering pass is not yet used. Reviewed-by: Eric Anholt <[email protected]> v2: Don't use ir_hierarchical_visitor--just loop over instructions directly. Also, make the names of the packed varyings include the names of the original varyings that were packed into them.