llvmpipe: Fix MSVC build.

[mesa.git] / src / gallium / drivers / llvmpipe / lp_setup_tri.c

diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
index 0d57f13f61b7c496f52ca7e154a6ae2d17090af9..dfe1bd11ea0c2e06a5542da6a138b5e9272a0348 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
@@ -343,26 +343,34 @@ do_triangle_ccw(struct lp_setup_context *setup,
        * Also, sometimes (in FBO cases) GL will render upside down
        * to its usual method, in which case it will probably want
        * to use the opposite, top-left convention.
+       *
+       * XXX: Chances are this will get stripped away.  In fact this
+       * is only meaningful if:
+       *
+       *          (plane->c & (FIXED_ONE-1)) == 0
+       *
        */         
-      if (plane->dcdx < 0) {
-         /* both fill conventions want this - adjust for left edges */
-         plane->c++;            
-      }
-      else if (plane->dcdx == 0) {
-         if (setup->pixel_offset == 0) {
-            /* correct for top-left fill convention:
-             */
-            if (plane->dcdy > 0) plane->c++;
+      if ((plane->c & (FIXED_ONE-1)) == 0) {
+         if (plane->dcdx < 0) {
+            /* both fill conventions want this - adjust for left edges */
+            plane->c++;            
          }
-         else {
-            /* correct for bottom-left fill convention:
-             */
-            if (plane->dcdy < 0) plane->c++;
+         else if (plane->dcdx == 0) {
+            if (setup->pixel_offset == 0) {
+               /* correct for top-left fill convention:
+                */
+               if (plane->dcdy > 0) plane->c++;
+            }
+            else {
+               /* correct for bottom-left fill convention:
+                */
+               if (plane->dcdy < 0) plane->c++;
+            }
          }
       }
 
-      plane->dcdx *= FIXED_ONE;
-      plane->dcdy *= FIXED_ONE;
+      plane->c = (plane->c + (FIXED_ONE-1)) / FIXED_ONE;
+
 
       /* find trivial reject offsets for each edge for a single-pixel
        * sized block.  These will be scaled up at each recursive level to
@@ -473,43 +481,47 @@ lp_setup_bin_triangle( struct lp_setup_context *setup,
    int sz = floor_pot((bbox->x1 - (bbox->x0 & ~3)) |
                      (bbox->y1 - (bbox->y0 & ~3)));
 
-   if (nr_planes == 3) {
-      if (sz < 4 && dx < 64)
-      {
-        /* Triangle is contained in a single 4x4 stamp:
-         */
-        int mask = (bbox->x0 & 63 & ~3) | ((bbox->y0 & 63 & ~3) << 8);
-
-        return lp_scene_bin_command( scene,
-                                     bbox->x0/64, bbox->y0/64,
-                                     LP_RAST_OP_TRIANGLE_3_4,
-                                     lp_rast_arg_triangle(tri, mask) );
-      }
-
-      if (sz < 16 && dx < 64)
-      {
-        int mask = (bbox->x0 & 63 & ~3) | ((bbox->y0 & 63 & ~3) << 8);
-
-        /* Triangle is contained in a single 16x16 block:
-         */
-        return lp_scene_bin_command( scene,
-                                     bbox->x0/64, bbox->y0/64,
-                                      LP_RAST_OP_TRIANGLE_3_16,
-                                      lp_rast_arg_triangle(tri, mask) );
-      }
-   }
-
-
    /* Determine which tile(s) intersect the triangle's bounding box
     */
    if (dx < TILE_SIZE)
    {
       int ix0 = bbox->x0 / TILE_SIZE;
       int iy0 = bbox->y0 / TILE_SIZE;
+      int px = bbox->x0 & 63 & ~3;
+      int py = bbox->y0 & 63 & ~3;
+      int mask = px | (py << 8);
 
       assert(iy0 == bbox->y1 / TILE_SIZE &&
             ix0 == bbox->x1 / TILE_SIZE);
 
+      if (nr_planes == 3) {
+         if (sz < 4)
+         {
+            /* Triangle is contained in a single 4x4 stamp:
+             */
+
+            return lp_scene_bin_command( scene, ix0, iy0,
+                                         LP_RAST_OP_TRIANGLE_3_4,
+                                         lp_rast_arg_triangle(tri, mask) );
+         }
+
+         if (sz < 16)
+         {
+            /* Triangle is contained in a single 16x16 block:
+             */
+            return lp_scene_bin_command( scene, ix0, iy0,
+                                         LP_RAST_OP_TRIANGLE_3_16,
+                                         lp_rast_arg_triangle(tri, mask) );
+         }
+      }
+      else if (nr_planes == 4 && sz < 16) 
+      {
+         return lp_scene_bin_command( scene, ix0, iy0,
+                                      LP_RAST_OP_TRIANGLE_4_16,
+                                      lp_rast_arg_triangle(tri, mask) );
+      }
+
+
       /* Triangle is contained in a single tile:
        */
       return lp_scene_bin_command( scene, ix0, iy0,