1 files changed, 94 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h b/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h
new file mode 100644
index 0000000000..114ed371a0
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h
@@ -0,0 +1,94 @@
+static unsigned trim( unsigned count, unsigned first, unsigned incr )
+{
+   return count - (count - first) % incr; 
+}
+
+static void FUNC(struct draw_pt_front_end *frontend,
+                 pt_elt_func get_elt,
+                 const void *elts,
+                 unsigned count)
+{
+   struct varray_frontend *varray = (struct varray_frontend *)frontend;
+   unsigned start = (unsigned)elts;
+
+   unsigned i, j;
+   unsigned first, incr;
+
+   varray->fetch_start = start;
+
+   draw_pt_split_prim(varray->input_prim, &first, &incr);
+   
+   /* Sanitize primitive length:
+    */
+   count = trim(count, first, incr); 
+   if (count < first)
+      return;
+
+#if 0
+   debug_printf("%s (%d) %d/%d\n", __FUNCTION__,
+                varray->input_prim,
+                start, count);
+#endif
+
+   switch (varray->input_prim) {
+   case PIPE_PRIM_POINTS:
+   case PIPE_PRIM_LINES:
+   case PIPE_PRIM_TRIANGLES:
+   case PIPE_PRIM_LINE_STRIP:
+   case PIPE_PRIM_TRIANGLE_STRIP:
+   case PIPE_PRIM_QUADS:
+   case PIPE_PRIM_QUAD_STRIP:
+      for (j = 0; j < count;) {
+         unsigned remaining = count - j;
+         unsigned nr = trim( MIN2(FETCH_MAX, remaining), first, incr );
+         varray_flush_linear(varray, start + j, nr);
+         j += nr;
+         if (nr != remaining) 
+            j -= (first - incr);
+      }
+      break;
+
+   case PIPE_PRIM_LINE_LOOP:
+      if (count >= 2) {
+         for (j = 0; j + first <= count; j += i) {
+            unsigned end = MIN2(FETCH_MAX, count - j);
+            end -= (end % incr);
+            for (i = 1; i < end; i++) {
+               LINE(varray, i - 1, i);
+            }
+            LINE(varray, i - 1, 0);
+            i = end;
+            fetch_init(varray, end);
+            varray_flush(varray);
+         }
+      }
+      break;
+
+
+   case PIPE_PRIM_POLYGON:
+   case PIPE_PRIM_TRIANGLE_FAN:
+      for (j = 0; j + first <= count; j += i) {
+         unsigned end = MIN2(FETCH_MAX, count - j);
+         end -= (end % incr);
+         for (i = 2; i < end; i++) {
+            TRIANGLE(varray, 0, i - 1, i);
+         }
+         i = end;
+         fetch_init(varray, end);
+         varray_flush(varray);
+      }
+      break;
+
+   default:
+      assert(0);
+      break;
+   }
+
+   varray_flush(varray);
+}
+
+#undef TRIANGLE
+#undef QUAD
+#undef POINT
+#undef LINE
+#undef FUNC