From c9f16f89841c55048362e288fc43eb6bbc530d11 Mon Sep 17 00:00:00 2001
From: Laurent Rineau <laurent.rineau@cgal.org>
Date: Tue, 18 Aug 2015 18:46:02 +0200
Subject: [PATCH] Define the OpenGL functions typedefs

   - PFNGLDRAWARRAYSINSTANCEDARBPROC
   - PFNGLVERTEXATTRIBDIVISORARBPROC

Definitions found in glext.h from Mesa.
---
 Circular_kernel_3/demo/Circular_kernel_3/Viewer.h               | 2 ++
 .../demo/Periodic_3_triangulation_3/Scene.h                     | 2 ++
 Polyhedron/demo/Polyhedron/CGAL_demo/Viewer_interface.h         | 2 ++
 Triangulation_3/demo/Triangulation_3/Viewer.h                   | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/Circular_kernel_3/demo/Circular_kernel_3/Viewer.h b/Circular_kernel_3/demo/Circular_kernel_3/Viewer.h
index f0ba2f3e78e..378fc42114d 100644
--- a/Circular_kernel_3/demo/Circular_kernel_3/Viewer.h
+++ b/Circular_kernel_3/demo/Circular_kernel_3/Viewer.h
@@ -44,6 +44,8 @@ private:
   QOpenGLVertexArrayObject vao[3];
   QOpenGLShaderProgram rendering_program;
   QOpenGLShaderProgram rendering_program_no_ext;
+  typedef void (APIENTRYP PFNGLDRAWARRAYSINSTANCEDARBPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+  typedef void (APIENTRYP PFNGLVERTEXATTRIBDIVISORARBPROC) (GLuint index, GLuint divisor);
   PFNGLDRAWARRAYSINSTANCEDARBPROC glDrawArraysInstanced;
   PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisor;
 
diff --git a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/Scene.h b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/Scene.h
index a689bfad4cb..4c012aa04dc 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/Scene.h
+++ b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/Scene.h
@@ -293,6 +293,8 @@ private:
       QOpenGLShaderProgram rendering_program;
       QOpenGLShaderProgram rendering_program_spheres;
       QOpenGLShaderProgram rendering_program_cylinders;
+      typedef void (APIENTRYP PFNGLDRAWARRAYSINSTANCEDARBPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+      typedef void (APIENTRYP PFNGLVERTEXATTRIBDIVISORARBPROC) (GLuint index, GLuint divisor);
       PFNGLDRAWARRAYSINSTANCEDARBPROC glDrawArraysInstanced;
       PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisor;
       void initialize_buffers();
diff --git a/Polyhedron/demo/Polyhedron/CGAL_demo/Viewer_interface.h b/Polyhedron/demo/Polyhedron/CGAL_demo/Viewer_interface.h
index 05955d44373..fe99eda60b2 100644
--- a/Polyhedron/demo/Polyhedron/CGAL_demo/Viewer_interface.h
+++ b/Polyhedron/demo/Polyhedron/CGAL_demo/Viewer_interface.h
@@ -30,6 +30,8 @@ public:
   static QString dumpFrame(const qglviewer::Frame&);
 
   virtual bool inFastDrawing() const = 0;
+  typedef void (APIENTRYP PFNGLDRAWARRAYSINSTANCEDARBPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+  typedef void (APIENTRYP PFNGLVERTEXATTRIBDIVISORARBPROC) (GLuint index, GLuint divisor);
   PFNGLDRAWARRAYSINSTANCEDARBPROC glDrawArraysInstanced;
   PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisor;
   bool extension_is_found;
diff --git a/Triangulation_3/demo/Triangulation_3/Viewer.h b/Triangulation_3/demo/Triangulation_3/Viewer.h
index d32de675c84..c865f018a41 100644
--- a/Triangulation_3/demo/Triangulation_3/Viewer.h
+++ b/Triangulation_3/demo/Triangulation_3/Viewer.h
@@ -387,6 +387,8 @@ private:
       QOpenGLShaderProgram rendering_program;
       QOpenGLShaderProgram rendering_program_spheres;
       QOpenGLShaderProgram rendering_program_cylinders;
+      typedef void (APIENTRYP PFNGLDRAWARRAYSINSTANCEDARBPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+      typedef void (APIENTRYP PFNGLVERTEXATTRIBDIVISORARBPROC) (GLuint index, GLuint divisor);
       PFNGLDRAWARRAYSINSTANCEDARBPROC glDrawArraysInstanced;
       PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisor;
       void initialize_buffers();