On Oct 3, 2008, at 9:46 AM, Albert Martin wrote:
videoLayer = [[CALayer layer] retain];
NSOpenGLPixelFormatAttribute attributes[] = {
NSOpenGLPFANoRecovery,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 16,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAAccelerated,
0};
presentationVideoLayer = [[[IWVideoView alloc] initWithFrame:
NSMakeRect(0, 0, frameRect.size.width, frameRect.size.height)
pixelFormat: [[NSOpenGLPixelFormat alloc]
initWithAttributes:attributes]] retain];
[presentationVideoLayer setLayer: videoLayer];
[presentationVideoLayer setWantsLayer: YES];
[[self layer] addSublayer: videoLayer];
[presentationVideoLayer setNeedsDisplay: YES];
[[presentationVideoLayer openGLContext] update];
There are number issues here.
One is as Matt mentioned, your using a plain CALayer when a
CAOpenGLLayer is called for. A plain CALayer will not render OpenGL
content. In this simple case, you will likely want to just let AppKit
create the layer for you (by not calling setLayer:).
Two, your trying to add a layer as a sublayer of itself. That won't
work for obvious reasons :). But then, you shouldn't be playing with
this layer anyway.
Third, and this one might not actually be an issue for you, is that
there is a bug in AppKit that causes layer-backed NSOpenGLViews to use
the wrong pixel format for their CAOpenGLLayers. Specifically, if you
really need a depth buffer (and aren't just copying a pixel format
from elsewhere) then you will need to create your own CAOpenGLLayer
subclass and do the proper work there. You can see the
CALayerEssentials sample <http://developer.apple.com/samplecode/CALayerEssentials/index.html
> for details on how to do that.
This is just an aside, but I notice when you create your view you do
alloc/init.../retain - this usually indicates that you are going to
leak sometime in the future as you are claiming two counts of
ownership on the view. This may be what you want, but it usually
isn't, so thats why I point it out.
--
David Duncan
Apple DTS Animation and Printing
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to [EMAIL PROTECTED]
