Light perf test

arcade/experimental/light_demo_perf.py

@@ -0,0 +1,74 @@
+import math
+import random
+import traceback
+import arcade
+from arcade.experimental.lights import Light, LightLayer
+
+# Do the math to figure out our screen dimensions
+SCREEN_WIDTH = 800
+SCREEN_HEIGHT = 600
+SCREEN_TITLE = "Lighting Demo (Experimental)"
+
+
+class MyGame(arcade.Window):
+
+    def __init__(self, width, height, title):
+        """
+        Set up the application.
+        """
+        super().__init__(width, height, title, resizable=True)
+        self.time = 0
+        self.frame = 0
+        self.background = arcade.load_texture(":resources:images/backgrounds/abstract_1.jpg")
+
+        self.light_layer = LightLayer((SCREEN_WIDTH, SCREEN_HEIGHT))
+        # Add some random lights
+        for _ in range(500):
+            self.light_layer.add(
+                Light((
+                    random.randrange(0, SCREEN_WIDTH),
+                    random.randrange(0, SCREEN_HEIGHT)),
+                    radius=50,
+                    mode='soft',
+                    color=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
+                ),
+            )
+
+    def on_draw(self):
+        try:
+            arcade.start_render()
+
+            # Everything that should be affected by lights in here
+            with self.light_layer:
+                arcade.set_background_color(arcade.color.WHITE)
+                arcade.start_render()
+                # arcade.draw_lrwh_rectangle_textured(
+                #     0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, self.background)
+
+            # Draw the contents with lighting
+            self.light_layer.draw()
+
+            image = arcade.get_image()
+            image.save(f'screenshots/frame{str(self.frame).zfill(3)}.png', 'png')
+
+        except Exception as e:
+            print(e)
+
+    def on_update(self, dt):
+        dt = 0.1
+        self.frame += 1
+        try:
+            self.time += dt
+            for i, light in enumerate(self.light_layer):
+                light.radius = 20 + math.sin(self.time + i) * 40
+        except Exception as e:
+            print(e)
+
+    def on_resize(self, width, height):
+        arcade.set_viewport(0, width, 0, height)
+        self.light_layer.resize(width, height)
+
+
+if __name__ == "__main__":
+    MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
+    arcade.run()