i965/vec4: Make with_writemask() non-static.

[mesa.git] / src / mesa / drivers / dri / i965 / brw_clip_tri.c

diff --git a/src/mesa/drivers/dri/i965/brw_clip_tri.c b/src/mesa/drivers/dri/i965/brw_clip_tri.c
index bf221caeccabe72fe9c880254d4330fcb102b2da..995a8909ccfacc1b1277232c866c7738bab48a5c 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_clip_tri.c
+++ b/src/mesa/drivers/dri/i965/brw_clip_tri.c
@@ -228,14 +228,11 @@ void brw_clip_tri_flat_shade( struct brw_clip_compile *c )
  * a comparison of it to zero with the condition `cond`.
  *
  * - If using a fixed plane, the distance is dot(hpos, plane).
- * - If using a user clip plane, the distance is dot(clipvertex, plane).
- *     Elsewhere we arrange for clipvertex to be mapped to hpos if no
- *     explicit clipvertex value was provided by the previous shader.
+ * - If using a user clip plane, the distance is directly available in the vertex.
  */
 static inline void
 load_clip_distance(struct brw_clip_compile *c, struct brw_indirect vtx,
-                struct brw_reg dst, GLuint hpos_offset, GLuint clip_offset,
-                int cond)
+                struct brw_reg dst, GLuint hpos_offset, int cond)
 {
    struct brw_compile *p = &c->func;
 
@@ -244,16 +241,19 @@ load_clip_distance(struct brw_clip_compile *c, struct brw_indirect vtx,
    brw_AND(p, vec1(brw_null_reg()), c->reg.vertex_src_mask, brw_imm_ud(1));
    brw_IF(p, BRW_EXECUTE_1);
    {
-      brw_MOV(p, dst, deref_4f(vtx, clip_offset));
+      struct brw_indirect temp_ptr = brw_indirect(7, 0);
+      brw_ADD(p, get_addr_reg(temp_ptr), get_addr_reg(vtx), c->reg.clipdistance_offset);
+      brw_MOV(p, vec1(dst), deref_1f(temp_ptr, 0));
    }
    brw_ELSE(p);
    {
       brw_MOV(p, dst, deref_4f(vtx, hpos_offset));
+      brw_DP4(p, dst, dst, c->reg.plane_equation);
    }
    brw_ENDIF(p);
 
    brw_set_conditionalmod(p, cond);
-   brw_DP4(p, dst, dst, c->reg.plane_equation);
+   brw_CMP(p, brw_null_reg(), cond, vec1(dst), brw_imm_f(0.0f));
 }
 
 
@@ -270,9 +270,6 @@ void brw_clip_tri( struct brw_clip_compile *c )
    struct brw_indirect outlist_ptr = brw_indirect(5, 0);
    struct brw_indirect freelist_ptr = brw_indirect(6, 0);
    GLuint hpos_offset = brw_varying_to_offset(&c->vue_map, VARYING_SLOT_POS);
-   GLuint clipvert_offset = brw_clip_have_varying(c, VARYING_SLOT_CLIP_VERTEX)
-      ? brw_varying_to_offset(&c->vue_map, VARYING_SLOT_CLIP_VERTEX)
-      : hpos_offset;
    GLint clipdist0_offset = c->key.nr_userclip
       ? brw_varying_to_offset(&c->vue_map, VARYING_SLOT_CLIP_DIST0)
       : 0;
@@ -285,9 +282,9 @@ void brw_clip_tri( struct brw_clip_compile *c )
    brw_MOV(p, get_addr_reg(freelist_ptr), brw_address(c->reg.vertex[3]) );
 
    /* Set the initial vertex source mask: The first 6 planes are the bounds
-    * of the view volume; the next 6 planes are the user clipping planes.
+    * of the view volume; the next 8 planes are the user clipping planes.
     */
-   brw_MOV(p, c->reg.vertex_src_mask, brw_imm_ud(0xfc0));
+   brw_MOV(p, c->reg.vertex_src_mask, brw_imm_ud(0x3fc0));
 
    /* Set the initial clipdistance offset to be 6 floats before gl_ClipDistance[0].
     * We'll increment 6 times before we start hitting actual user clipping. */
@@ -321,13 +318,11 @@ void brw_clip_tri( struct brw_clip_compile *c )
             */
            brw_MOV(p, get_addr_reg(vtx), deref_1uw(inlist_ptr, 0));
 
-            load_clip_distance(c, vtxPrev, c->reg.dpPrev, hpos_offset, clipvert_offset,
-                  BRW_CONDITIONAL_L);
+            load_clip_distance(c, vtxPrev, c->reg.dpPrev, hpos_offset, BRW_CONDITIONAL_L);
            /* IS_NEGATIVE(prev) */
            brw_IF(p, BRW_EXECUTE_1);
            {
-               load_clip_distance(c, vtx, c->reg.dp, hpos_offset, clipvert_offset,
-                     BRW_CONDITIONAL_GE);
+               load_clip_distance(c, vtx, c->reg.dp, hpos_offset, BRW_CONDITIONAL_GE);
               /* IS_POSITIVE(next)
                */
               brw_IF(p, BRW_EXECUTE_1);
@@ -368,8 +363,7 @@ void brw_clip_tri( struct brw_clip_compile *c )
               brw_ADD(p, get_addr_reg(outlist_ptr), get_addr_reg(outlist_ptr), brw_imm_uw(sizeof(short)));
               brw_ADD(p, c->reg.nr_verts, c->reg.nr_verts, brw_imm_ud(1));
 
-               load_clip_distance(c, vtx, c->reg.dp, hpos_offset, clipvert_offset,
-                     BRW_CONDITIONAL_L);
+               load_clip_distance(c, vtx, c->reg.dp, hpos_offset, BRW_CONDITIONAL_L);
               /* IS_NEGATIVE(next)
                */
               brw_IF(p, BRW_EXECUTE_1);
@@ -472,7 +466,7 @@ void brw_clip_tri_emit_polygon(struct brw_clip_compile *c)
       brw_MOV(p, get_addr_reg(vptr), brw_address(c->reg.inlist));
       brw_MOV(p, get_addr_reg(v0), deref_1uw(vptr, 0));
 
-      brw_clip_emit_vue(c, v0, 1, 0,
+      brw_clip_emit_vue(c, v0, BRW_URB_WRITE_ALLOCATE_COMPLETE,
                         ((_3DPRIM_TRIFAN << URB_WRITE_PRIM_TYPE_SHIFT)
                          | URB_WRITE_PRIM_START));
       
@@ -481,7 +475,7 @@ void brw_clip_tri_emit_polygon(struct brw_clip_compile *c)
 
       brw_DO(p, BRW_EXECUTE_1);
       {
-        brw_clip_emit_vue(c, v0, 1, 0,
+        brw_clip_emit_vue(c, v0, BRW_URB_WRITE_ALLOCATE_COMPLETE,
                            (_3DPRIM_TRIFAN << URB_WRITE_PRIM_TYPE_SHIFT));
   
         brw_ADD(p, get_addr_reg(vptr), get_addr_reg(vptr), brw_imm_uw(2));
@@ -492,7 +486,7 @@ void brw_clip_tri_emit_polygon(struct brw_clip_compile *c)
       }
       brw_WHILE(p);
 
-      brw_clip_emit_vue(c, v0, 0, 1,
+      brw_clip_emit_vue(c, v0, BRW_URB_WRITE_EOT_COMPLETE,
                         ((_3DPRIM_TRIFAN << URB_WRITE_PRIM_TYPE_SHIFT)
                          | URB_WRITE_PRIM_END));
    }