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-rw-r--r--src/Fl_Image.cxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Fl_Image.cxx b/src/Fl_Image.cxx
index 60e56078a..f1247512a 100644
--- a/src/Fl_Image.cxx
+++ b/src/Fl_Image.cxx
@@ -352,7 +352,7 @@ void Fl_RGB_Image::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
fl_begin_offscreen((Fl_Offscreen)id);
fl_draw_image(array, 0, 0, w(), h(), d(), ld());
fl_end_offscreen();
- if (d() == 2 || d() == 4) {
+ if (d() == 2 || d() == 4 && !fl_can_do_alpha_blending()) {
mask = fl_create_alphamask(w(), h(), d(), ld(), array);
}
#endif