Fix bitmap adapter test (#59)

Author: almarklein

rendercanvas/utils/bitmappresentadapter.py

@@ -10,7 +10,7 @@ class BitmapPresentAdapter:
     """An adapter to present a bitmap to a canvas using wgpu.
 
     This adapter can be used by context objects that want to present a bitmap, when the
-    canvas only supoorts presenting to screen.
+    canvas only supports presenting to screen.
     """
 
     def __init__(self, canvas, present_methods):
@@ -37,6 +37,10 @@ def present_bitmap(self, bitmap):
 
         if not self._context_is_configured:
             format = self._context.get_preferred_format(self._device.adapter)
+            # We don't want an srgb texture, because we assume the input bitmap is already srgb.
+            # AFAIK contexts always support both the regular and the srgb texture format variants
+            if format.endswith("-srgb"):
+                format = format[:-5]
             self._context.configure(device=self._device, format=format)
 
         target = self._context.get_current_texture().create_view()

tests/test_context.py

@@ -210,7 +210,7 @@ def test_bitmap_context():
 
 
 @pytest.mark.skipif(not can_use_wgpu_lib, reason="Needs wgpu lib")
-def test_bitmap_to_screen_adapter():
+def test_bitmap_present_adapter():
     # Create canvas and attach our special adapter canvas
     canvas = ManualOffscreenRenderCanvas()
     context = canvas.get_context(__name__ + ":SpecialContextWithWgpuAdapter")