diff --git a/panda/src/glstuff/glGraphicsStateGuardian_src.h b/panda/src/glstuff/glGraphicsStateGuardian_src.h
index 5082c0dc8f..1c30cf633c 100644
--- a/panda/src/glstuff/glGraphicsStateGuardian_src.h
+++ b/panda/src/glstuff/glGraphicsStateGuardian_src.h
@@ -48,6 +48,12 @@ class Light;
 // functions are defined, and the system gl.h sometimes doesn't
 // declare these typedefs.
 #ifndef __EDG__  // Protect the following from the Tau instrumentor.
+typedef void (APIENTRYP PFNGLGETCOMPRESSEDTEXIMAGEPROC) (GLenum target, GLint level, GLvoid *img);
+typedef void (APIENTRYP PFNGLGENQUERIESPROC) (GLsizei n, GLuint *ids);
+typedef void (APIENTRYP PFNGLBEGINQUERYPROC) (GLenum target, GLuint id);
+typedef void (APIENTRYP PFNGLENDQUERYPROC) (GLenum target);
+typedef void (APIENTRYP PFNGLDELETEQUERIESPROC) (GLsizei n, const GLuint *ids);
+typedef void (APIENTRYP PFNGLGETQUERYOBJECTUIVPROC) (GLuint id, GLenum pname, GLuint *params);
 typedef void (APIENTRYP PFNGLPOINTPARAMETERFVPROC) (GLenum pname, const GLfloat *params);
 typedef void (APIENTRYP PFNGLDRAWRANGEELEMENTSPROC) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
 typedef void (APIENTRYP PFNGLTEXIMAGE3DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);