offscreen: cogl_offscreen_new_to_texture now supports GL_TEXTURE_RECTANGLE_ARB

cogl_offscreen_new_to_texture previously bailed out if the given texture's
GL target was anything but GL_TEXTURE_2D, but it now also allows
foreign GL_TEXTURE_RECTANGLE_ARB textures.

Thanks to Owen for reporting this issue, ref:
https://bugzilla.gnome.org/show_bug.cgi?id=601032

diff --git a/clutter/cogl/cogl/cogl-draw-buffer.c b/clutter/cogl/cogl/cogl-draw-buffer.c
index 2a7b757..d32d325 100644 (file)
--- a/clutter/cogl/cogl/cogl-draw-buffer.c
+++ b/clutter/cogl/cogl/cogl-draw-buffer.c
@@ -265,7 +265,8 @@ cogl_offscreen_new_to_texture (CoglHandle texhandle)
   if (!cogl_texture_get_gl_texture (texhandle, &tex_gl_handle, &tex_gl_target))
     return COGL_INVALID_HANDLE;
 
-  if (tex_gl_target != GL_TEXTURE_2D)
+  if (tex_gl_target != GL_TEXTURE_2D &&
+      tex_gl_target != GL_TEXTURE_RECTANGLE_ARB)
     return COGL_INVALID_HANDLE;
 
   /* Create a renderbuffer for stenciling */