Commit b6930889 authored by Committed by Kristian H. Kristensen
protocol: Modes are specified in HW pixels
Modes are mainly meant to be used in coordination with fullscreen in DRIVER mode, by e.g. games. For such games what they generally want is to match some hardware mode and resize their window for that. We don't really need to complicate this with the scaling. So, we keep the resolutions in HW pixels, and drop the SCALED flag (as it is now useless). This lets you just create e.g an 800x600 buffer of scale 1 and fullscreen that, ignoring the output scaling factor (although you can of course also respect it and create a 400x300 surface at scale 2). Conceptually the mode change is treated like a scaling which overrides the normal output scale. The only complexity is the FILL mode where it can happen that the user specifies a buffer of the same size as the screen, but the output has scale 2 and the buffer scale 1. Just scanning out this buffer will work, but effectively this is a downscaling operation, as the "real" size of the surface in pels is twice the size of the output. We solve this by allowing FILL to downscale (but still not upscale).
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