i965/fs: Get rid of fs_visitor::do_dual_src.

This boolean flag was being used for two different things:

 - To set the brw_wm_prog_data::dual_src_blend flag.  Instead we can
   just set it based on whether the dual_src_output register is valid,
   which will be the case if the shader writes the secondary blending
   color.

 - To decide whether to call emit_single_fb_write() once, or in a loop
   that would iterate only once, which seems pretty useless.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h
index 8b1ea79..86e85db 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -316,7 +316,6 @@ public:
    fs_reg sample_mask;
    fs_reg outputs[VARYING_SLOT_MAX];
    fs_reg dual_src_output;
-   bool do_dual_src;
    int first_non_payload_grf;
    /** Either BRW_MAX_GRF or GEN7_MRF_HACK_START */
    unsigned max_grf;