Module: Mesa Branch: master Commit: 5ee09413162f4ec83cc7a738e807ffde8c89cca7 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5ee09413162f4ec83cc7a738e807ffde8c89cca7
Author: Eric Anholt <[email protected]> Date: Fri Oct 1 15:42:39 2010 -0700 i965: When producing a single channel swizzle, don't make a temporary. This quickly cuts 8% of the instructions in my glsl demo. --- 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 50341ba..b38df71 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; _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
