Fixed floating point exception in PixelArray()

14 years ago · 9d424cb1c8
1 changed files with 10 additions and 3 deletions
--- a/src/PixelArray.cc
+++ b/src/PixelArray.cc
@ -103,9 +103,16 @@ PixelArray::PixelArray(Canvas *canvas, int sx, int sy, int width, int height):

      // undo premultiplication
      dst[bx + 3] = a;
-      dst[bx + 0] = r * 255 / a;
-      dst[bx + 1] = g * 255 / a;
-      dst[bx + 2] = b * 255 / a;
+      // TODO: abstract
+      if (a) {
+        dst[bx + 0] = r * 255 / a;
+        dst[bx + 1] = g * 255 / a;
+        dst[bx + 2] = b * 255 / a;
+      } else {
+        dst[bx + 0] = r;
+        dst[bx + 1] = g;
+        dst[bx + 2] = b;
+      }
    }
    dst += dstStride;
  }