Minimal Cross-Platform Graphics

Re:Minimal Cross-Platform Graphics by greenbit on Tuesday January 24, 2023 @08:34AM (#34503326)

But wouldn't the GPU help if you were mapping e.g. 256x192 virtual pixels to say 1024x768? I.e., each of the pixels from the low-res space being represented by a NxM patch of actual screen pixels, like a Win32 GDI StretchBlt() call.

If you had a frame buffer for the actual screen and you tried to do even a 1 to 2x2 expansion on the CPU's time, that'd have to be a serious speed hit. Presumably GPU hardware can do that sort of thing.

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Re:Minimal Cross-Platform Graphics by flohofwoe on Tuesday January 24, 2023 @08:42AM (#34503405)

Yes, for fancy upscaling or applying pixel shader effects like CRT filters, doing the final pass on the GPU definitely makes sense. This would no longer be a "minimal" library though.

Window system composers should also be able to upscale bitmaps on their own though, and nothing prevents them to use the GPU for this.

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