13:46 <sarbes> Hi there. I was reading up on your discussion about the buffer swapping behaviour.

13:47 <sarbes> I'm the guy running Kodi at 120fps on an Odroid C2 by partially updating the buffers.

13:47 <sarbes> At least when there is just the debug overlay which needs to be refreshed. Full screen redraws result in around 50-60 fps, depending on the scene.

13:48 <sarbes> At 1920x1080, that is.

13:48 <sarbes> Gotta say, I'm very impressed about the old Mali's and your driver. It outperforms the Raspberry Pis by a large marging with our current code base.

13:49 <sarbes> We do use EGL_BUFFER_PRESERVED with GBM atm, as it should be a bit faster than drawing the whole multi-layer UI on every frame. I have not seen any issues with Lima.

14:00 <sarbes> With EGL_KHR_partial_update I do see some flickering when displaying the OSD on top of a video. But this might be an icompositing issue. I have only s905/s905x devices here, so I can't really test for this right now.

14:10 <sarbes> If I could make a feature request, it would be support for GL_ARM_shader_framebuffer_fetch (for programmable blending). It would make cross-fading between two alpha textures possible. Our current implementation is a bit ugly.

22:49 <anarsoul> it's easy to implement fb fetch

22:49 <anarsoul> however I don't think that there are any tests for it