Added highDPI flag that enables it when creating a SDL window. #921
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The window size will be the same as a non high DPI one, but the underlying window buffer will be set to the correct pixel size, based on SDL_GL_GetDrawableSize instead of SDL_GetWindowSize.
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There's several places where we're using window.width, so I think that for HDPI the window get_width/get_height should return the actual inner pixels of the window (in hdpi mode). and mouseX/Y , resize() and mouse events should also work based on that. This way one application will not have to change anything to go from LDPI to HDPI. |
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I'm not completely sure how to handle window resizes in that mode. If high DPI is enabled, and the window size is set in pixes, it will appear a quarter of the size of a non high DPI window. |
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Yes I think it should be handled manually wrt the initial size, as in HDPI a window of 800x600 is really smaller |
I added a define
-D highDPI, that will enable it when creating a SDL window.It will then get the raw pixel size of the screen instead of window size, using
SDL_GL_GetDrawableSize, and set the render context dimension to that when the window is resized.I don't know if this is the correct way to do it, but to me it seems to work quite well.
High DPI flag off:
High DPI flag on:
Fixes #589, requires HaxeFoundation/hashlink#435 to be merged too