i965/vs: Move compute_clip_distance() out of emit_urb_writes().

Legacy user clipping (using gl_Position or gl_ClipVertex) is handled by
turning those into the modern gl_ClipDistance equivalents.

This is unnecessary in Core Profile: if user clipping is enabled, but
the shader doesn't write the corresponding gl_ClipDistance entry,
results are undefined.  Hence, it is also unnecessary for geometry
shaders.

This patch moves the call up to run_vs().  This is equivalent for VS,
but removes the need to pass clip distances into emit_urb_writes().

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Chris Forbes <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h
index 243baf688de..d08d438a40e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -271,7 +271,7 @@ public:
                                  fs_reg src0_alpha, unsigned components,
                                  unsigned exec_size, bool use_2nd_half = false);
    void emit_fb_writes();
-   void emit_urb_writes(gl_clip_plane *clip_planes);
+   void emit_urb_writes();
    void emit_cs_terminate();
 
    void emit_barrier();