llvmpipe: change 'in' to boolean, add comments

diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
index 716b88073e5bfa48ec0ad0d088a81d44a739dbc2..e7de6431d38e879887f1cd3b275223e156825387 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
@@ -441,7 +441,7 @@ do_triangle_ccw(struct setup_context *setup,
         int cx1 = c1;
         int cx2 = c2;
         int cx3 = c3;
-        int in = 0;
+        boolean in = FALSE;  /* are we inside the triangle? */
 
         for (x = minx; x <= maxx; x++)
         {
@@ -451,13 +451,13 @@ do_triangle_ccw(struct setup_context *setup,
            {
               /* do nothing */
               if (in)
-                 break;
+                 break;  /* exiting triangle, all done with this row */
            }
            else if (cx1 + ei1 > 0 &&
                     cx2 + ei2 > 0 &&
                     cx3 + ei3 > 0) 
            {
-              in = 1;
+              in = TRUE;
                /* triangle covers the whole tile- shade whole tile */
               if(setup->fs.current.opaque) {
                  lp_scene_bin_reset( scene, x, y );
@@ -471,7 +471,7 @@ do_triangle_ccw(struct setup_context *setup,
            }
            else 
            { 
-              in = 1;
+              in = TRUE;
                /* shade partial tile */
                lp_scene_bin_command( scene, x, y,
                                     lp_rast_triangle,