[cairo-bugs] [Bug 48752] [i915 i965 Wayland] dnd start with black blocks against cairo-gl

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=48752

Ander Conselvan de Oliveira <conselvan2 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|wayland-bugs at lists.freedesk |cairo-bugs at cairographics.or
                   |top.org                     |g
          QAContact|                            |cairo-bugs at cairographics.or
                   |                            |g
            Product|Wayland                     |cairo
            Version|unspecified                 |1.12.0
          Component|weston                      |gl backend

--- Comment #5 from Ander Conselvan de Oliveira <conselvan2 at gmail.com> 2012-04-20 08:22:11 PDT ---
(In reply to comment #2)
> The black boxes problem is that since weston commit bad42973 [1], the cairo
> surfaces for the dnd items is created from an wl_egl_window. This surface will
> have an embeded operand of type CAIRO_GL_OPERAND_TEXTURE, but no texture is
> actually created. The end result is that texture 0 is bound on 
> _cairo_gl_context_setup_operand().

Moving bug to cairo. The thing that does not work here is doing something like
this:

item_surface = cairo_gl_surface_create_for_egl();
cr = cairo_create(item_surface);
...
cairo_paint(cr);
cairo_destroy(cr);

and later

surface = cairo_gl_surface_create_for_egl();
cr = cairo_create(surface);

...

cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_surface(cr, item_surface, x, y);
cairo_paint(cr);

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