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https://github.com/RGBCube/serenity
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6bb53d6a80
Instead of crashing when we can't make the back buffer non-volatile, we now transition the window into single-buffered mode instead (assuming it was originally in double-buffered mode.) This reduces GUI fidelity a bit (by potentially making windows flicker during repaint) but since it's only triggered in low-memory conditions, it seems like a reasonable thing to sacrifice in order for the system to carry on. This patch also stops us from allocating entirely new backing stores after the old ones were purged. If they were purged but reallocated just fine, there's no need to allocate new memory again. We already have fresh zero-filled pages in the existing bitmap at this point. |
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