Hi all, I have a simple requirement: take a buffer I malloc myself and get that rendered as an image using CGImage.
I'm creating a data provider using CGDataProviderCreateWithData(), then using that to create a CGImage of the desired dimensions and format. This is later drawn using CGContextDrawImage(). The original buffer is updated directly by writing pixel values into the buffer, then the appropriate part of the view is invalidated which causes the image to redraw. All I get is a black image - the data I write to the buffer appears not to affect anything. Is this the right way to handle this? I understand that the whole system with data providers and so on is intended for efficient image rendering and decoding, but in this case I want to get back to almost the most basic situation possible. So maybe CGImage is caching the content of my buffer once and not re-reading from it each time, which would explain my results? How can I set up an image that just blits my buffer and doesn't try anything clever like caching? --Graham _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
