OpenGL + video with transparent background + Jit.gl.Hap

Lasse Munk's icon

Dear Everybody,

I'm under a bit of time pressure, and will therefore ask a humble question :)

I have a bunch of videos I want to run using jit.gl.hap. Everything works fine, until today, where I found out that I have to key out a bunch of backgrounds.

I want to use the jit.gl.hap encoded with HAP-ALPHA, but I don't get how to make OpenGL show my video with the alpha mask I have applied..

Any help will be very greatly appreciated.. A solution could also be using other OpenGL stuff, and not jit.gl.HAP, but it's a little heavy on the computer, so HAP will be great!

Hope to hear from you (btw. OpenGL in jitter - and in general - is really new, so I might need a little bit of a newbie explanation :)

All the best,
Lasse

Lasse Munk's icon

an example of a HAP-ALPHA encodet video is found here:

Lasse Munk's icon

the answer is "blend_enable 1" to the jit.gl.videoplane

Wetterberg's icon

Good for you, man. Keep at it! :)

Rob Ramirez's icon

you will probably also want to disable depth on the objects that are to be alpha-blended (@depth_enable 0). you then use the @layer attribute to control the layer order.

Lasse Munk's icon

ah cool! thanks :)