Entered as Bug ID# 7487784
On Dec 19, 2009, at 4:21 PM, vade wrote:
Ok, bear with me, this one is a weird one. Id like to see if anyone
can re-create this bug.
If you have a custom plugin that has an image provider, if you use
the outputImageProviderWithTexture: blah blah convenience method
your output image not work with a Queue if you provide your image in
anything other than display colorspace as provided by [context
colorSpace] from within the plugin.
to re-create, download the OpenGL Image example from Apple here:
http://developer.apple.com/mac/library/samplecode/GLImage/index.html
Make sure your header is set to use the outputImageProvider methods
by making sure you use
#define __USE_PROVIDER__ 0
and
#define __USE_RENDERED_TEXTURES__ 1
Now, you should be able to compile the plugin and run the
composition below. You will see the gradient change over time and a
series of sprites displayed each queued image, which will show the
color changes.
Now, if You change the colorspace of the output Image Provider
(lines 231 and friends) to the following: (I am simply passing in a
generic RGB color space)
/* Create output image provider */
CGColorSpaceRef cspace = CGColorSpaceCreateWithName
(kCGColorSpaceGenericRGB);
#if __BIG_ENDIAN__
provider = [context
outputImageProviderFromTextureWithPixelFormat:QCPlugInPixelFormatARGB8
pixelsWide:self.inputWidth pixelsHigh:self.inputHeight name:name
flipped:NO releaseCallback:_TextureReleaseCallback
releaseContext:NULL colorSpace:cspace shouldColorMatch:YES];
#else
provider = [context
outputImageProviderFromTextureWithPixelFormat:QCPlugInPixelFormatBGRA8
pixelsWide:self.inputWidth pixelsHigh:self.inputHeight name:name
flipped:NO releaseCallback:_TextureReleaseCallback
releaseContext:NULL colorSpace:cspace shouldColorMatch:YES];
#endif
CGColorSpaceRelease(cspace);
And re-run compile/run the attach composition, you will only see the
lastest image in the queue for all queue items. In other words, the
queue is only seeing "one image".
Can anyone confirm? I am on Mac OS X 10.6.1, ATI x1600, MBP 2.33.
<Bug Report.qtz>
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