Only use catrom at finest mipmap level.

Reduce minimum zoom level to 0.45.
cmbruns · Jun 20, 2024 · 53d8136 · 53d8136
1 parent 2cba7f5
commit 53d8136
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/vmg/shared.frag b/vmg/shared.frag
@@ -83,7 +83,9 @@ vec4 clip_n_filter(sampler2D image, vec2 tc, int pixelFilter, bool wrap)
         return vec4(0);
     }
 
-    if (pixelFilter == FILTER_NEAREST) {
+    float mipmapLevel = textureQueryLod(image, tc).x;
+    if (mipmapLevel > 0 || pixelFilter == FILTER_NEAREST)
+    {
         if (wrap)
            return nearest_wrap(image, tc);
         else

diff --git a/vmg/state.py b/vmg/state.py
@@ -463,8 +463,8 @@ def zoom_relative(self, zoom_factor: float, zoom_center: Optional[QPoint]):
         old_zoom = self._zoom
         new_zoom = self._zoom * zoom_factor
         # Limit zoom-out because you never need more than twice the image dimension to move around
-        if new_zoom <= 1:
-            new_zoom = 1
+        if new_zoom <= 0.45:
+            new_zoom = 0.45
         self._zoom = new_zoom
         if zoom_center is not None:
             p_qwn = LocationQwn(zoom_center.x(), zoom_center.y(), 1)