www.jpct.net

jPCT-AE - a 3d engine for Android => Support => Topic started by: ap on May 10, 2015, 02:08:21 pm

Title: Texture artifacts (green/purple/black)
Post by: ap on May 10, 2015, 02:08:21 pm

Hello

I am trying to play a video on a 3D object.
I am streaming the video (with Android's MediaPlayer) into a texture (through SurfaceTexture and Surface), and then map this texture to a plane. It works, but I get weird artifacts on the borders (looks like a green and black checkerboard and sometimes it blinks green and purple).
It seems to be something with the GPU (PowerVR), but I guess there should be a way to solve this... I am still now sure what it is.

Anyone got that or have any idea how to solve a thing like that?

Thanks
AP

Title: Re: Texture artifacts (green/purple/black)
Post by: EgonOlsen on May 10, 2015, 02:32:53 pm

Do you have a screen shot?

Title: Re: Texture artifacts (green/purple/black)
Post by: ap on May 10, 2015, 03:33:54 pm

Yes.
That's a video "projected" on a plane.

At first I thought maybe it's aspect ratio issue - it wasn't.
Then I thought, maybe something to do with texture wrapping  or texture filtering - neither.
Tried on two devices with PowerVR GPU - same result. Another device with another GPU - worked perfectly.

Title: Re: Texture artifacts (green/purple/black)
Post by: EgonOlsen on May 10, 2015, 05:51:36 pm

Maybe it has something to do with video size/aspect ratio compared to the texture's? Maybe the PowerVR video processor can apply certain scales only or something like this...I've no idea, I'm just guessing...