Index: osd.c
===================================================================
--- osd.c	(revision 1079)
+++ osd.c	(revision 1080)
@@ -99,6 +99,11 @@
 
 raydium_texture_current_set(tex);
 raydium_rendering_internal_prepare_texture_render(tex);
+
+// useful for rgb() fake textures with raydium_osd_alpha_change()
+if(raydium_osd_color[3])
+    glEnable(GL_BLEND);
+
 glColor4fv(raydium_osd_color);
 glBegin(GL_QUADS);