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Question: Do you see the need for a 24-bit bitmap that would serve for dialog painting only? Right now virtual painter is less than efficient in memory footprint for a typical 1280x1024px. Unless you have an interesting suggestion...
Asked by Gio (79.130.170.x) on May 29 2023, 3:20pm
Reply on May 29 2023, 3:36pm:

a 4MB buffer for a window is pretty reasonable, no?

Comments:

Posted by Gio (79.130.170.x) on May 29 2023, 4:30pm:
That was exactly the overhead! Had a case for a large surface with a clipped rect - proved more efficient to just draw individual bm for the visible parts and that got me question the memory consumption. I prefer vpainter to draw dialogs because of portability and I was wondering if there is something more efficient than that. In all other cases I prefer the 32-bit goodness.
Posted by Gio (79.130.170.x) on May 30 2023, 1:54am:
4MB buffer is reasonable but I am not sure if a vpaint with RECT r = {0,0,1280,1024} and clipped RECT cr = {7,7,1280,1024} is justifiable to the same amount of memory. I don't know if the current implementation is just good enough and doesn't require the extra effort/complexity - I guess the bit depth reduction was an argument for a least cost solution. Anyway, it doesn't matter much in 21st century, it was just an observation that sparked my curiosity.
Posted by Justin on May 30 2023, 9:59pm:
ah you mean 3 bytes per pixel vs 4? meh, 3 is probably slower in general anyway

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