Graphics

[wxtry_vita]

Hello,

In my program ,i want to draw something on the screen,and then freeze them as a background picture to draw something else on it(which the background picture wouldn't be erased when new elements was drawn). I think maybe i can creat a texture from the colorbuffer when the background was drawn and then render it to the screen each circle. But i can't find a way to do it.

How should i do to create a texture from the current colorbuffer?Or is there anyone can offer me a better way to achieve my goal?

[Panajev]

You could do it two ways, reading the color buffer with the equivalent of glReadPixel() or you could create a Texture2D with the renderable attribute set on. You would then bind the FBO with that texture attached as color target, render the scene, and use the texture as you please. I am making a short summary based on what I'd do with OpenGL ES, with PS Suite I am still working my way into the samples so I would suggest to look at the shaders sample and the shadow projection one in particular. I am working on off screen render buffers (for shadow maps) right now so hopefully I will be able to post some more details about this soon.

[wxtry_vita]

I checked the pss document again and found this ReadPixels function i missed before. I'll try it in my program later.Thank you. And it'll be very nice if anyone else can offer me another more efficent way to ahcieve my goal.