fastplotlib
diff --git a/‎fastplotlib/graphics/features/_base.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_base.py
+4-3Lines changed: 4 additions & 3 deletions b/‎fastplotlib/graphics/features/_base.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_base.py
+4-3Lines changed: 4 additions & 3 deletions
diff --git a/‎fastplotlib/graphics/features/_colors.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_colors.py
+1-1Lines changed: 1 addition & 1 deletion b/‎fastplotlib/graphics/features/_colors.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_colors.py
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎fastplotlib/graphics/features/_data.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_data.py
+4-2Lines changed: 4 additions & 2 deletions b/‎fastplotlib/graphics/features/_data.py
Copy file name to clipboardExpand all lines: fastplotlib/graphics/features/_data.py
+4-2Lines changed: 4 additions & 2 deletions
@@ -20,6 +20,9 @@
 
 
 def to_gpu_supported_dtype(array):
+    """
+    If ``array`` is a numpy array, converts it to a supported type. GPUs don't support 64 bit dtypes.
+    """
     if isinstance(array, np.ndarray):
         if array.dtype not in supported_dtypes:
             if np.issubdtype(array.dtype, np.integer):
@@ -69,10 +72,8 @@ def __init__(self, parent, data: Any, collection_index: int = None):
 
         """
         self._parent = parent
-        if isinstance(data, np.ndarray):
-            data = to_gpu_supported_dtype(data)
 
-        self._data = data
+        self._data = to_gpu_supported_dtype(data)
 
         self._collection_index = collection_index
         self._event_handlers = list()
 
@@ -206,7 +206,7 @@ def __setitem__(self, key, value):
 
         n_colors = len(range(key.start, key.stop, key.step))
 
-        colors = make_colors(n_colors, cmap=value)
+        colors = make_colors(n_colors, cmap=value).astype(self._data.dtype)
         super(CmapFeature, self).__setitem__(key, colors)
 
 
 
@@ -25,21 +25,23 @@ def __getitem__(self, item):
     def _fix_data(self, data, parent):
         graphic_type = parent.__class__.__name__
 
+        data = to_gpu_supported_dtype(data)
+
         if data.ndim == 1:
             # for scatter if we receive just 3 points in a 1d array, treat it as just a single datapoint
             # this is different from fix_data for LineGraphic since there we assume that a 1d array
             # is just y-values
             if graphic_type == "ScatterGraphic":
                 data = np.array([data])
             elif graphic_type == "LineGraphic":
-                data = np.dstack([np.arange(data.size), data])[0].astype(np.float32)
+                data = np.dstack([np.arange(data.size, dtype=data.dtype), data])[0]
 
         if data.shape[1] != 3:
             if data.shape[1] != 2:
                 raise ValueError(f"Must pass 1D, 2D or 3D data to {graphic_type}")
 
             # zeros for z
-            zs = np.zeros(data.shape[0], dtype=np.float32)
+            zs = np.zeros(data.shape[0], dtype=data.dtype)
 
             data = np.dstack([data[:, 0], data[:, 1], zs])[0]