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Handle DPI scaling in SDL_GetWindowSurface

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Fixes DPI awareness of testdrawchessboard (previously, the surface was
being created in points instead of pixels, resulting in the demo app
only drawing in a corner of the screen on High-DPI displays)

*_CreateWindowFramebuffer()/*_UpdateWindowFramebuffer(): are updated
to use SDL_GetWindowSizeInPixels instead of SDL_GetWindowSize() or
window->w/window->h.

Most of the _CreateWindowFramebuffer backends are untested except
for Windows.

Fixes #7047
This commit is contained in:
Eric Wasylishen
2023-01-11 19:45:01 -07:00
committed by Sam Lantinga
parent 6d11515873
commit 67c91353e0
11 changed files with 57 additions and 35 deletions
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include/SDL3/SDL_video.h
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@@ -1261,7 +1261,7 @@ extern DECLSPEC int SDLCALL SDL_UpdateWindowSurface(SDL_Window * window);
*
* \param window the window to update
* \param rects an array of SDL_Rect structures representing areas of the
* surface to copy
* surface to copy, in pixels
* \param numrects the number of rectangles
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.