You then do this 3 times for each channel, and then, simply use another simple CIKernel to add each component together from your 3 source images by doing something like
vec4 result = vec4(red.r, green.g, blue.b, red.a) (this keeps the red alpha channel, but you can deal with it however you want).
Id be curious if there is a better way, but that works.
Color Mask.qtz
Description: application/quartzcomposer
On May 8, 2008, at 2:38 PM, neb wrote:
A simple problem, I know the answer is right in front of me but can't seem to find it...How would I go about splitting a single image feed into RGBA or HSBA component channels, so that I can process each channel individually as images, and then reassemble (or not) later on in the chain? I'm using QC3 on leopard.Thanks! - Neb _______________________________________________ Do not post admin requests to the list. They will be ignored.Quartzcomposer-dev mailing list ([email protected] )Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quartzcomposer-dev/doktorp%40mac.com This email sent to [EMAIL PROTECTED]
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