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| author | Matt Turner <mattst88@gmail.com> | 2014-03-29 17:44:45 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2014-04-15 09:24:09 -0700 |
| commit | 4dcfb924176eea4f0ac892c8ec8d38090dd59d2a (patch) | |
| tree | 487eda48926ddf45d80e43978b0671a32deb309d | |
| parent | d877c643bea7a40e37d13d8a967c06fd006d1622 (diff) | |
i965/gs: Add dummy source to prepare_channel_masks instruction.
The generator uses its destination as a source implicitly, which breaks
some assumptions in dead code elimination. Giving the instruction a
source allows us to reason about it better.
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp index 13d6d385a2f..1321a94d658 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp @@ -408,7 +408,8 @@ vec4_gs_visitor::emit_control_data_bits() src_reg channel_mask(this, glsl_type::uint_type); inst = emit(SHL(dst_reg(channel_mask), one, channel)); inst->force_writemask_all = true; - emit(GS_OPCODE_PREPARE_CHANNEL_MASKS, dst_reg(channel_mask)); + emit(GS_OPCODE_PREPARE_CHANNEL_MASKS, dst_reg(channel_mask), + channel_mask); emit(GS_OPCODE_SET_CHANNEL_MASKS, mrf_reg, channel_mask); } |