Enable HiDPI scaling in windows and linux (#2361)

* Enable scaling by default

* Add scaling mode

* Draw offscreen texture using window projection

* HDPI options from pyglet2.1 dev7

* Adjust to pyglet 2.0dev7

* Disable scaling during unit tests

Author: einarf

arcade/__init__.py

@@ -59,6 +59,11 @@ def configure_logging(level: int | None = None):
 
 import pyglet
 
+# Enable HiDPI support
+if os.environ.get("ARCADE_TEST"):
+    pyglet.options.dpi_scaling = "real"
+else:
+    pyglet.options.dpi_scaling = "stretch"
 
 # Env variable shortcut for headless mode
 headless: Final[bool] = bool(os.environ.get("ARCADE_HEADLESS"))
@@ -72,9 +77,6 @@ def configure_logging(level: int | None = None):
 if sys.platform == "darwin" or os.environ.get("ARCADE_HEADLESS") or utils.is_raspberry_pi():
     pyglet.options.shadow_window = False  # type: ignore # pending https://github.com/pyglet/pyglet/issues/1164
 
-# Use the old gdi fonts on windows until directwrite is fast/stable
-# pyglet.options.win32_gdi_font = True
-
 # Imports from modules that don't do anything circular
 
 # Complex imports with potential circularity

arcade/application.py

@@ -195,7 +195,7 @@ def __init__(
                     alpha_size=8,
                 )
                 display = pyglet.display.get_display()
-                screen = display.get_default_screen()  # type: ignore  # pending: resolve upstream type tricks
+                screen = screen or display.get_default_screen()
                 if screen:
                     config = screen.get_best_config(config)
             except pyglet.window.NoSuchConfigException:
@@ -260,11 +260,9 @@ def __init__(
 
         self.set_vsync(vsync)
 
-        super().set_fullscreen(fullscreen, screen)
-        # This used to be necessary on Linux, but no longer appears to be.
-        # With Pyglet 2.0+, setting this to false will not allow the screen to
-        # update. It does, however, cause flickering if creating a window that
-        # isn't derived from the Window class.
+        if fullscreen is True:
+            super().set_fullscreen(True, screen)
+
         set_window(self)
 
         self.push_handlers(on_resize=self._on_resize)
@@ -472,7 +470,7 @@ def center_window(self) -> None:
         # Get the display screen using pyglet
         screen_width, screen_height = get_display_size()
 
-        window_width, window_height = self.get_size()
+        window_width, window_height = self.get_framebuffer_size()
         # Center the window
         self.set_location((screen_width - window_width) // 2, (screen_height - window_height) // 2)
 

arcade/start_finish_data.py

@@ -52,7 +52,10 @@ def begin(self):
 
         Should only be called once followed by a call to :py:meth:`end`.
         """
-        self.generator_func = self.atlas.render_into(self.texture)
+        self.generator_func = self.atlas.render_into(
+            self.texture,
+            projection=(0, self.window.width, 0, self.window.height),
+        )
         fbo = self.generator_func.__enter__()
         fbo.clear(color=self.window.background_color)
 

tests/conftest.py

@@ -3,6 +3,9 @@
 import os
 from pathlib import Path
 
+os.environ["ARCADE_TEST"] = "True"
+
+
 if os.environ.get("ARCADE_PYTEST_USE_RUST"):
     import arcade_accelerate  # pyright: ignore [reportMissingImports]