The attached composition has the Blob.qtz example composition within
a Render in Image set to 32 bit format. On my system, this causes
the blobs not to blend right, i.e., a black box appears around each
particle. Setting it to 16bit also shows black boxes. Setting the
RII format to 8bit gets rid of the black boxes. Is this expected
behavior or a bug? Thanks very much.
Hold down alt/option, click Quartz Composer, Preferences, and enable
"SoftwareCoreImage" and "SoftwareOpenGL" under the "(Editor)" tab,
restart QC, and see if the issue persists. My video card doesn't
support > 8 bpp, and does not exhibit this bug. If it goes away when
using software rendering, it's a bug with the driver or something.
Make sure to disable those 'features' once you're done testing,
performance will be Really Bad while it's disabled :)
