[ Version ( since = "0.31" ) ]
public signal void gl_draw (uint x, uint y, uint width, uint height)
The gl_draw signal is emitted when the rectangular region x/y/w/h of the GL scanout is updated and must be drawn.
When the draw is finished, you must call display_gl_draw_done in order to release the GL resources.
| x |
x position |
| y |
y position |
| width |
width |
| height |
height |