From 9e96c737f8cb6faebf7c7339cfcf14f80ed8e73c Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 28 Sep 2010 10:18:31 -0700 Subject: i965: Subtract instead of adding when computing y delta in new FS backend. Fixes 7 piglit cases. --- src/mesa/drivers/dri/i965/brw_fs.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 0595488c9c..723ebca61b 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -1335,7 +1335,7 @@ fs_visitor::emit_interpolation() emit(fs_inst(BRW_OPCODE_ADD, this->delta_y, this->pixel_y, - fs_reg(brw_vec1_grf(1, 1)))); + fs_reg(negate(brw_vec1_grf(1, 1))))); this->current_annotation = "compute pos.w and 1/pos.w"; /* Compute wpos. Unlike many other varying inputs, we usually need it -- cgit v1.2.3