I've found the reason for it is that the window is not opaque
(setOpaque:NO). So are all non-opaque windows ineligible for VRAM
backing? I don't see any documentation on window attribute
requirements for it, only GPU requirements.
On Mar 29, 2009, at 2:23 PM, Michael Vannorsdel wrote:
I have a custom shaped window that refuses to use VRAM as its backing
buffer. It's a relatively small borderless window with a semi
transparent rounded rect shape. Are there certain things that will
prevent a window from using VRAM on supported hardware? Other stock
windows do this just fine. This window is also set as a child window
for a larger one; the custom window is used as an informational
popup. The parent window is a stock sheet which is not in VRAM (which
I don't mind) if that matters.
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