diff --git a/src/xpra/client/gl/gl_window_backing_base.py b/src/xpra/client/gl/gl_window_backing_base.py
index f9af0d01e7..3a57800625 100644
--- a/src/xpra/client/gl/gl_window_backing_base.py
+++ b/src/xpra/client/gl/gl_window_backing_base.py
@@ -18,7 +18,7 @@
     GL_TEXTURE0, GL_TEXTURE1, GL_TEXTURE2, GL_QUADS, GL_LINE_LOOP, GL_LINES, GL_COLOR_BUFFER_BIT,
     GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER,
     GL_DONT_CARE, GL_TRUE, GL_DEPTH_TEST, GL_SCISSOR_TEST, GL_LIGHTING, GL_DITHER,
-    GL_RGB, GL_RGBA, GL_BGR, GL_BGRA, GL_RGBA8, GL_RGB8, GL_RGB10_A2, GL_RGB565, GL_RGB5_A1, GL_RGBA4,
+    GL_RGB, GL_RGBA, GL_BGR, GL_BGRA, GL_RGBA8, GL_RGB8, GL_RGB10_A2, GL_RGB565, GL_RGB5_A1, GL_RGBA4, GL_RGBA16,
     GL_UNSIGNED_INT_2_10_10_10_REV, GL_UNSIGNED_INT_10_10_10_2, GL_UNSIGNED_SHORT_5_6_5,
     GL_BLEND, GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_SRC_ALPHA,
     GL_TEXTURE_MAX_LEVEL, GL_TEXTURE_BASE_LEVEL,
@@ -132,6 +132,7 @@
     GL_RGB565       : "RGB565",
     GL_RGB5_A1      : "RGB5_A1",
     GL_RGBA4        : "RGBA4",
+    GL_RGBA16       : "GL_RGBA16",
     }
 DATATYPE_TO_STR = {
     GL_UNSIGNED_INT_2_10_10_10_REV  : "UNSIGNED_INT_2_10_10_10_REV",
@@ -291,7 +292,10 @@ def get_bit_depth(self, pixel_depth=0):
 
     def init_formats(self):
         self.RGB_MODES = list(GLWindowBackingBase.RGB_MODES)
-        if self.bit_depth==30:
+        if self.bit_depth>32:
+            self.internal_format = GL_RGBA16
+            self.RGB_MODES.append("r210")
+        elif self.bit_depth==30:
             self.internal_format = GL_RGB10_A2
             self.RGB_MODES.append("r210")
         elif self.bit_depth==16: