Hello Clutter users and developers,
Using the top of 1.14 branch when trying to use 2 offscreen effects such as
blur and desaturate on a full HD screen sized actor and then after that
trying to do a page turn effect on a smaller actor we run out of video RAM
(I'm assuming) on our OpenGL ES device and get errors from Cogl when it
calls GL calls to render attributes or allocate texture memory for
resulting in black actor(s).
While we might be able to fix this particular issue by making sure to
remove/destroy the effects from the actor before applying another effect on
another actor, we want a graceful general way to handle tight memory
situations and not just display black. It seems that you can eat up most
of your memory with an effect and then memory runs out just trying to draw
normal actors with no effects
Clutter-WARNING **: Unable to allocate texture for offscreen effect: Out of
memory
However we get into a situation where we're getting errors from GL out of
memory I guess when trying to use more than one offscreen effect in the
same scene and when some of them are failing. This results in black
textures. It seems that the memory isn't recovered until the actors are
deleted and a new scene is constructed.
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1072: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1072: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1139: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1072: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1072: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1139: GL error
(1285): Out of memory
(.:1836): Cogl-WARNING **: ./driver/gl/cogl-framebuffer-gl.c:1072: GL error
(1285): Out of memory
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