OpenGLComponent Question --

[amcleran]

This is probably a dumb question:

Can an OpenGLComponent be rendered BEHIND other components?

It seems that this is not the case…

Aaron

[amcleran]

From Jules… back in the day…

Yes, well that’s because the opengl has to be drawn as a heavyweight window, but the rest of the juce comps are lightweight - so they can’t be drawn over the top. It’s the same with other embedded windows, and you get the same thing in any other UI libraries that use lightweight comps.

Sad… This makes a lot of sense though.

[amcleran]

So… I’ve resigned myself to not being able to draw over my opengl component – however, when I resize it, I get this terrible tearing effect where the OpenGL window sort of jumps weirdly.

I know there has to be some a way to prevent it.

[valley]

The only real way around this AFAIK is to implement your entire GUI as OpenGL.

[amcleran]

I still haven’t figured out the resize problem, however there was also a tearing problem in macs where there monitor refresh isn’t synchronized to the callback synchronization…

[code]
#include <OpenGL/OpenGL.h>

#ifdef JUCE_MAC
GLint MacHackVBL = 1;
CGLContextObj cglContext = CGLGetCurrentContext();;
CGLSetParameter(cglContext, kCGLCPSwapInterval, &MacHackVBL);
#endif
[/code][/code]

[Bruce_Wheaton]

That sounds odd. Mac is a double-buffered only system these days. It’s pretty hard to draw to the front buffer and get tearing. Could you be doing something else odd?

Bruce