Disallow max_fps=-1 (#99)

Author: almarklein

rendercanvas/_scheduler.py

@@ -94,6 +94,11 @@ def set_update_mode(self, update_mode, *, min_fps=None, max_fps=None):
             self._min_fps = max(0.0, float(min_fps))
 
         if max_fps is not None:
+            # For users setting max_fps=-1 to try to disable the fps cap, as was the way to go in wgpu.gui
+            if max_fps < 1:
+                raise ValueError(
+                    "max_fps should be a >= 1. Use update_mode='fastest' to disable the fps cap. Also see ``vsync=False`` to unlock higher frame rates."
+                )
             self._max_fps = max(1, float(max_fps))
 
     def request_draw(self):

rendercanvas/_version.py

@@ -10,7 +10,7 @@
 
 # This is the reference version number, to be bumped before each release.
 # The build system detects this definition when building a distribution.
-__version__ = "2.1.2"
+__version__ = "2.2.0"
 
 # Allow using nearly the same code in different projects
 project_name = "rendercanvas"