Pass through draw_fb optimization metadata to Display class #103
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The JS implementation does content hashing to not blit unchanged framebuffer contents (see 171ff2d). However, that is not necessary for the ATI adapters that already track this and only set draw_fb if the framebuffer has actually changed. Pass through a fb_known_to_be_changed for these cases, and also add an optional update_skipped method (since the JS still wants to know when the last logical screen update was).
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mihaip@51a8f07 is how the JS side uses this |
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this seems making SDL window not redrawing when window is overlapped in windows unless there is an update from emulated environment. |
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@roytam1 this change just passes through a flag, it should not affect what/when SDL draws. I believe the behavior you're seeing is due to the optimization from d134107 (before that we were drawing constantly). Based on your #106 PR it looks like the actual issue is that we weren't doing the right thing for |
On Windows. without handling |
The JS implementation does content hashing to not blit unchanged framebuffer contents (see mihaip/dingusppc@171ff2d). However, that is not necessary for the ATI adapters that already track this and only set
draw_fbif the framebuffer has actually changed.Pass through a
fb_known_to_be_changedfor these cases, and also add an optionalupdate_skippedmethod (since the JS still wants to know when the last logical screen update was).