i965g: handle special vs outputs specially

Where vs output semantic tags indicate an output is signficant for
fixed function processing (such as clipping, unfilled modes, etc),
retain information about that output so that we can get to it easily
later on.

Fix up the unfilled processing, but hard-wire edgeflag to one for now.

With this change, trivial/tri-unfilled works.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/gallium/drivers/i965/brw_clip_unfilled.c b/src/gallium/drivers/i965/brw_clip_unfilled.c
index 0fab3a5f1a..aec835b8ce 100644
--- a/src/gallium/drivers/i965/brw_clip_unfilled.c
+++ b/src/gallium/drivers/i965/brw_clip_unfilled.c
@@ -45,9 +45,9 @@ static void compute_tri_direction( struct brw_clip_compile *c )
    struct brw_compile *p = &c->func;
    struct brw_reg e = c->reg.tmp0;
    struct brw_reg f = c->reg.tmp1;
-   struct brw_reg v0 = byte_offset(c->reg.vertex[0], c->offset[VERT_RESULT_HPOS]); 
-   struct brw_reg v1 = byte_offset(c->reg.vertex[1], c->offset[VERT_RESULT_HPOS]); 
-   struct brw_reg v2 = byte_offset(c->reg.vertex[2], c->offset[VERT_RESULT_HPOS]); 
+   struct brw_reg v0 = byte_offset(c->reg.vertex[0], c->offset_hpos); 
+   struct brw_reg v1 = byte_offset(c->reg.vertex[1], c->offset_hpos); 
+   struct brw_reg v2 = byte_offset(c->reg.vertex[2], c->offset_hpos); 
 
 
    struct brw_reg v0n = get_tmp(c);
@@ -123,7 +123,8 @@ static void copy_bfc( struct brw_clip_compile *c )
 
    /* Do we have any colors to copy? 
     */
-   if (c->nr_color_attrs == 0)
+   if ((c->offset_color0 == 0 || c->offset_bfc0 == 0) &&
+       (c->offset_color1 == 0 || c->offset_bfc1 == 0))
       return;
 
    /* In some wierd degnerate cases we can end up testing the