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Properly use SDL's new Windows dpi scaling hint.

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Fixes #1814.
Fixes #1421.
This commit is contained in:
Alex Szpakowski
2022-07-03 17:03:58 -03:00
parent 814aaa95cd
commit d586d18474
2 changed files with 22 additions and 6 deletions
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src/modules/window/Window.cpp
+5
View File
@@ -28,8 +28,13 @@ namespace window
static bool highDPIAllowed = false;
// TODO: find a cleaner way to do this...
// The window backend (e.g. love.window.sdl) is expected to implement this.
void setHighDPIAllowedImplementation(bool enable);
void setHighDPIAllowed(bool enable)
{
setHighDPIAllowedImplementation(enable);
highDPIAllowed = enable;
}
src/modules/window/sdl/Window.cpp
+17 -6
View File
@@ -54,10 +54,27 @@
#define APIENTRY
#endif
#ifndef SDL_HINT_WINDOWS_DPI_SCALING
#define SDL_HINT_WINDOWS_DPI_SCALING "SDL_WINDOWS_DPI_SCALING"
#endif
namespace love
{
namespace window
{
// See src/modules/window/Window.cpp.
void setHighDPIAllowedImplementation(bool enable)
{
#if defined(LOVE_WINDOWS)
// Windows uses a different API than SDL_WINDOW_ALLOW_HIGHDPI.
// This must be set before the video subsystem is initialized.
SDL_SetHint(SDL_HINT_WINDOWS_DPI_SCALING, enable ? "1" : "0");
#else
LOVE_UNUSED(enable);
#endif
}
namespace sdl
{
@@ -73,12 +90,6 @@ Window::Window()
, hasSDL203orEarlier(false)
, contextAttribs()
{
// Windows uses a different API than SDL_WINDOW_ALLOW_HIGHDPI.
#if defined(LOVE_WINDOWS) && defined(SDL_HINT_WINDOWS_DPI_SCALING)
// This must be set before the video subsystem is initialized.
SDL_SetHint(SDL_HINT_WINDOWS_DPI_SCALING, isHighDPIAllowed() ? "1" : "0");
#endif
if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
throw love::Exception("Could not initialize SDL video subsystem (%s)", SDL_GetError());