Render an iOS UIWebView to an OpenGL texture in real time

Asked Jun 12 '17 at 15:07

Active Jun 12 '17 at 15:07

Viewed 573 times

I'm currently trying to render the content of a UIWebView into an OpenGL texture in real time for an application. Searching on the web, I found a way to do what I wanted here using the renderInContext method of the web view's layer, but it's really slow.

So I have some questions to ask you:

I've noticed that even calling renderInContext method, the web view is rendered on the screen. Is there a way to replace the rendering method saying to the web view that we want to render into a texture instead of the screen? (like on Android)
Is there a way to know if the web view has been updated (some JavaScript code has modified the page for example) to call the renderInContext only in this case? I didn't find anything about that into the official documentation.
I saw that we can allocate specific OpenGL ES texture (CVOpenGLESTexture) with the Core Video framework, is it suitable to web view rendering? Can I use that to improve the performances?

Thanks a lot for your answers.

asked Jun 12 '17 at 15:07

Noxalus

any luck for your question ? – NovusMobile Nov 02 '17 at 04:03
No, sorry, I didn't find a proper solution to this problem unfortunatly... – Noxalus Nov 08 '17 at 10:12
How can you come up with the solution for this? – NovusMobile Nov 10 '17 at 10:21
Currently what I've done is call WebView's `setHidden` method to hide it before to call `renderInContext` and show it again just after. But I didn't do anything for the performance issue. – Noxalus Nov 10 '17 at 14:25

Render an iOS UIWebView to an OpenGL texture in real time

0 Answers0