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Fix viewport scaling bug on android after context rebind (#2703)

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On android after rebinding context (which happens when you minimize and
navigate back to an app, or when you turn a screen off and back on)
there's a bug that viewport has a wrong scale and part of it is off
screen.

The change fixes it on devices I tried, but the solution feels hacky to
me. However when I attempted instead to call SetupViewport() again which
feels like a more proper solution, it didn't fix it.
This commit is contained in:
Denis Pobedrya
2022-09-18 12:28:55 +03:00
committed by GitHub
parent 8e57c8ace3
commit ff25402f68
1 changed files with 8 additions and 1 deletions
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9
src/rcore.c
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@@ -5484,7 +5484,14 @@ static void AndroidCommandCallback(struct android_app *app, int32_t cmd)
// Reset screen scaling to full display size
EGLint displayFormat = 0;
eglGetConfigAttrib(CORE.Window.device, CORE.Window.config, EGL_NATIVE_VISUAL_ID, &displayFormat);
ANativeWindow_setBuffersGeometry(app->window, CORE.Window.render.width, CORE.Window.render.height, displayFormat);
// Adding renderOffset here feels rather hackish, but the viewport scaling is wrong after the
// context rebinding if the screen is scaled unless offsets are added. There's probably a more
// appropriate way to fix this
ANativeWindow_setBuffersGeometry(app->window,
CORE.Window.render.width + CORE.Window.renderOffset.x,
CORE.Window.render.height + CORE.Window.renderOffset.y,
displayFormat);
// Recreate display surface and re-attach OpenGL context
CORE.Window.surface = eglCreateWindowSurface(CORE.Window.device, CORE.Window.config, app->window, NULL);