Summary:
The clear of the Evas_Thread_Command_Ector_Surface structure is an unmanaged variable.
When ector calls _draw_thread_ector_surface_set and it checks the clear value.
the clear value is garbage value. This can cause the pixels to fail to initialize.
This is why afterimages remain after updating shapes while using ector surfaces.
Test Plan:
./build/src/examples/evas/efl-canvas-vg-simple
1 - Basic Shape test
Scale up 's' or do something
Reviewers: Hermet, smohanty, kimcinoo
Reviewed By: Hermet
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D11278