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i965: Remove swizzling of assignment to vector-splitting single-channel LHS.
author
Eric Anholt
<eric@anholt.net>
Mon, 27 Sep 2010 22:10:34 +0000
(15:10 -0700)
committer
Eric Anholt
<eric@anholt.net>
Mon, 27 Sep 2010 23:09:50 +0000
(16:09 -0700)
We'd end up reading some non-x component of the float RHS. +53 piglits.
src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
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diff --git
a/src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
b/src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
index
9b58916
..
83b4af0
100644
(file)
--- a/
src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
+++ b/
src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
@@
-319,8
+319,6
@@
ir_vector_splitting_visitor::visit_leave(ir_assignment *ir)
ir->write_mask = (1 << 0);
handle_rvalue(&ir->rhs);
- ir->rhs = new(mem_ctx) ir_swizzle(ir->rhs,
- elem, elem, elem, elem, 1);
} else {
handle_rvalue(&ir->rhs);
}