i965 VS: Change nr_userclip to nr_userclip_planes.

The only remaining uses of brw_vs_prog_key::nr_userclip only occurred
when using clip planes (as opposed to gl_ClipDistance).  This patch
renames the value to nr_userclip_planes and sets it to zero when
gl_ClipDistance is in use.  This avoids unnecessary VS recompiles.

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vs.c b/src/mesa/drivers/dri/i965/brw_vs.c
index e01752cdb71..14e91d87b2d 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.c
+++ b/src/mesa/drivers/dri/i965/brw_vs.c
@@ -289,10 +289,12 @@ static void brw_upload_vs_prog(struct brw_context *brw)
     */
    key.program_string_id = vp->id;
    key.userclip_active = (ctx->Transform.ClipPlanesEnabled != 0);
-   key.nr_userclip = _mesa_bitcount_64(ctx->Transform.ClipPlanesEnabled);
    key.uses_clip_distance = vp->program.UsesClipDistance;
-   if (!key.uses_clip_distance)
+   if (!key.uses_clip_distance) {
       key.userclip_planes_enabled = ctx->Transform.ClipPlanesEnabled;
+      key.nr_userclip_planes
+         = _mesa_bitcount_64(ctx->Transform.ClipPlanesEnabled);
+   }
    key.copy_edgeflag = (ctx->Polygon.FrontMode != GL_FILL ||
 			ctx->Polygon.BackMode != GL_FILL);