Ian Romanick wrote:
TWM isn't a good example, because it can efficiently handle expose events without the klunky backingstore feature enabled. Granted, there exists a small subset of applications that benefit from backing store, but it's a very small set in my experience. Most of the 2D applications that can't handle redraws can often achieve the same effect by rendering to pixmaps.On Sun, Oct 20, 2002 at 05:09:08PM -0600, Jens Owen wrote:Making a direct rendering 3D driver render to a windows backing store area is a complicated task with very little benefit, IMO.
Right, but shouldn't purely 2D targets work? I wouldn't think that the menus in twm are using OpenGL. :) At the very least, if it's not supported at all, when X is started with +bs, shouldn't it say just say no? That's the problem that I see. The user requests a feature, X says it's okay, but then it's not implemented.
Would disabling the DRI when backingstore is enabled give the semantic consistency you're looking for? I don't have a problem with that, because 99.99% of the users don't need backing store enabled.
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Jens Owen / \/\ _
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