Fixes for glGetnConvolutionFilter
diff --git a/xml/gl.xml b/xml/gl.xml
index 63b9e95..1b819d2 100644
--- a/xml/gl.xml
+++ b/xml/gl.xml
@@ -38084,6 +38084,8 @@
             <enum name="GL_PROXY_COLOR_TABLE"/>
             <enum name="GL_PROXY_POST_CONVOLUTION_COLOR_TABLE"/>
             <enum name="GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE"/>
+            <enum name="GL_CONVOLUTION_1D"/>
+            <enum name="GL_CONVOLUTION_2D"/>
             <enum name="GL_SEPARABLE_2D"/>
             <command name="glGetnMapdv"/>
             <command name="glGetnMapfv"/>