pbuffers have been deprecated for a very long time (since 10.7), all of
NSOpenGLPixelBuffer is marked deprecated too (from 10.7 on). Depending on what
you mean by "broken", that might be a factor. Core Profile contexts don't work
with pbuffers at all, IIRC, I'm not sure what others problems they may have
elsewhere.
For off-drawable rendering you should be using FBOs.
On Feb 9, 2015, at 9:52 AM, Mark Coniglio <m...@troikatronix.com> wrote:
> Hello,
>
> My software Isadora adopts .qtz files to allow them to function video
> effects/video generators.
>
> Code that has worked a long while, up to and including 10.9, is broken in
> 10.10 Yosemite.
>
> Specifically, this relates to modules that use the Billboard as an output.
> For these modules, I create QCRenderer context in which to capture the
> output, and then pass that on to other modules in my app. (Code used to do
> this is below.)
>
> Can anyone offer any advice about why this functionality has stopped working
> in 10.10?
>
> Thanks in Advance,
> Mark
>
> --- CODE SNIPPET - CREATING THE CONTEXT ---
>
> mGLPixelBuffer = [[NSOpenGLPixelBuffer alloc]
> initWithTextureTarget:GL_TEXTURE_RECTANGLE_EXT textureInternalFormat:GL_RGBA
> textureMaxMipMapLevel:0 pixelsWide:mOpenGLPixelWidth
> pixelsHigh:mOpenGLPixelHeight];
> if (mGLPixelBuffer == NULL) {
> NSLog(@"Cannot create OpenGL pixel buffer");
> }
>
> // ------------------------------------------------------------
> // CREATE THE OPENGL CONTEXT
>
> NSOpenGLPixelFormat* openGLFormat = NULL;
>
> if (mGLPixelBuffer != NULL) {
>
> // create a pixel format
> NSOpenGLPixelFormatAttribute attributes[] = {
> NSOpenGLPFANoRecovery,
> NSOpenGLPFAAccelerated,
> NSOpenGLPFAPixelBuffer,
> NSOpenGLPFAScreenMask, (NSOpenGLPixelFormatAttribute)
> CGDisplayIDToOpenGLDisplayMask(finalDisplayID),
> NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute) 32,
> NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute) 24,
> (NSOpenGLPixelFormatAttribute) 0
> };
>
> NSOpenGLPixelFormat* openGLFormat = [[[NSOpenGLPixelFormat alloc]
> initWithAttributes:attributes] autorelease];
>
> // NOTE: the pixel format is not retained by [NSOpenGLContext
> initWithFormat]
> mQCGLContext = [[NSOpenGLContext alloc] initWithFormat:openGLFormat
> shareContext:NULL];
>
> if (mQCGLContext != NULL) {
> [mQCGLContext setPixelBuffer:mGLPixelBuffer cubeMapFace:0
> mipMapLevel:0 currentVirtualScreen:[mQCGLContext currentVirtualScreen]];
> } else {
> mGLPixelBuffer = NULL;
> NSLog(@"Cannot create OpenGL context");
> }
> }
>
> ----- CODE SNIPPET - SETTING THE CONTEXT -----
>
> mQCRenderer = [[QCRenderer alloc] initWithOpenGLContext:mQCGLContext
> pixelFormat:openGLFormat file:(NSString*) cfPluginFilePathStr];
> --
> =======================================================================
> Mark Coniglio | m...@troikatronix.com
> TroikaTronix | http://www.troikatronix.com/
> Isadora® | http://www.troikatronix.com/isadora.html
> | (interactive media processing environment)
> =======================================================================
>
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--
Christopher Wright
christopher_wri...@apple.com
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