fixed a wraparound bug for negative bitmap coordinates.

diff --git a/lib/modules/swfrender.c b/lib/modules/swfrender.c
index 2a5d426..11b0c50 100644 (file)
--- a/lib/modules/swfrender.c
+++ b/lib/modules/swfrender.c
@@ -565,7 +565,7 @@ static void fill_bitmap(RGBA*line, int*z, int y, int x1, int x2, MATRIX*m, bitma
        return;
     }
     det = 20.0/det;
-    
+
     if(!b->width || !b->height) {
         fill_solid(line, z, y, x1, x2, color_red, depth);
         return;
@@ -586,6 +586,8 @@ static void fill_bitmap(RGBA*line, int*z, int y, int x1, int x2, MATRIX*m, bitma
            } else {
                xx %= b->width;
                yy %= b->height;
+               if(xx<0) xx += b->width;
+               if(yy<0) yy += b->height;
            }
 
            col = b->data[yy*b->width+xx];