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i965/fs: Correctly set up gl_FragCoord.w on Sandybridge.
author
Kenneth Graunke
<kenneth@whitecape.org>
Sun, 20 Feb 2011 00:48:24 +0000
(16:48 -0800)
committer
Kenneth Graunke
<kenneth@whitecape.org>
Tue, 22 Feb 2011 18:52:44 +0000
(10:52 -0800)
pixel_w is the final result; wpos_w is used on gen4 to compute it.
NOTE: This is a candidate for the 7.10 branch.
Reviewed-by: Eric Anholt <eric@anholt.net>
src/mesa/drivers/dri/i965/brw_fs.cpp
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diff --git
a/src/mesa/drivers/dri/i965/brw_fs.cpp
b/src/mesa/drivers/dri/i965/brw_fs.cpp
index
c6c6497
..
30e3bd5
100644
(file)
--- a/
src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/
src/mesa/drivers/dri/i965/brw_fs.cpp
@@
-494,7
+494,7
@@
fs_visitor::emit_fragcoord_interpolation(ir_variable *ir)
wpos.reg_offset++;
/* gl_FragCoord.w: Already set up in emit_interpolation */
- emit(fs_inst(BRW_OPCODE_MOV, wpos, this->
wpos
_w));
+ emit(fs_inst(BRW_OPCODE_MOV, wpos, this->
pixel
_w));
return reg;
}