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HiDPI support on SDL2 (#351)

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linux: works only with wayland backend, can be used with SDL_VIDEODRIVER=wayland enviroment variable set.
It's possible that it works also on other platforms when using the SDL backend.
This commit is contained in:
Matteo De Carlo
2021-11-11 15:38:05 +01:00
committed by GitHub
parent a05c0e3544
commit af97739b61
3 changed files with 7 additions and 4 deletions
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Editor/main_SDL2.cpp
+1 -1
View File
@@ -197,7 +197,7 @@ int main(int argc, char *argv[])
"Wicked Engine Editor",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
w, h,
SDL_WINDOW_SHOWN | SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE);
SDL_WINDOW_SHOWN | SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
if (!window) {
throw sdl2::SDLError("Error creating window");
}
Tests/main_SDL2.cpp
+1 -1
View File
@@ -64,7 +64,7 @@ int main(int argc, char *argv[])
"Wicked Engine Tests",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
1280, 800,
SDL_WINDOW_SHOWN | SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE);
SDL_WINDOW_SHOWN | SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
if (!window) {
throw sdl2::SDLError("Error creating window");
}
WickedEngine/wiPlatform.h
+5 -2
View File
@@ -38,6 +38,7 @@ typedef void* HMODULE;
#ifdef SDL2
#include <SDL2/SDL.h>
#include <SDL_vulkan.h>
#include "sdl2.h"
#endif
@@ -94,8 +95,10 @@ namespace wiPlatform
#endif // PLATFORM_UWP
#ifdef PLATFORM_LINUX
dest->dpi = 96; // todo
SDL_GetWindowSize(window, &dest->width, &dest->height);
int window_width, window_height;
SDL_GetWindowSize(window, &window_width, &window_height);
SDL_Vulkan_GetDrawableSize(window, &dest->width, &dest->height);
dest->dpi = ((float) dest->width / (float) window_width) * 96.0;
#endif // PLATFORM_LINUX
}
}