diff options
author | Eric Anholt <eric@anholt.net> | 2010-10-01 15:42:39 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-10-01 17:19:03 -0700 |
commit | 5ee09413162f4ec83cc7a738e807ffde8c89cca7 (patch) | |
tree | 073135978b6e0cb2d379f8cd6ca53d60b3d7cf23 /src/mesa/drivers/dri/i965/brw_fs.cpp | |
parent | a0799725f52386cef911d3e104c5514a2811290b (diff) |
i965: When producing a single channel swizzle, don't make a temporary.
This quickly cuts 8% of the instructions in my glsl demo.
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_fs.cpp')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 50341ba383..b38df71a84 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -1445,6 +1445,11 @@ fs_visitor::visit(ir_swizzle *ir) ir->val->accept(this); fs_reg val = this->result; + if (ir->type->vector_elements == 1) { + this->result.reg_offset += ir->mask.x; + return; + } + fs_reg result = fs_reg(this, ir->type); this->result = result; |