FIx a few compilation warnings.

src/easymesh/csgbsp.cpp

@@ -1,12 +1,14 @@
 //
-// EasyMesh-Csg: The code belonging to CSG operations
+//  EasyMesh-Csg: The code belonging to CSG operations
 //
-// Copyright: (c) 2010-2013 Sam Hocevar <sam@hocevar.net>
-//            (c) 2010-2013 Benjamin "Touky" Huet <huet.benjamin@gmail.com>
-//   This program is free software; you can redistribute it and/or
-//   modify it under the terms of the Do What The Fuck You Want To
-//   Public License, Version 2, as published by Sam Hocevar. See
-//   http://www.wtfpl.net/ for more details.
+//  Copyright © 2010—2019 Sam Hocevar <sam@hocevar.net>
+//            © 2010—2015 Benjamin "Touky" Huet <huet.benjamin@gmail.com>
+//
+//  Lol Engine is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
 //
 
 #include <lol/engine-internal.h>
@@ -507,7 +509,9 @@ int CsgBsp::TestTriangleToTree(vec3 const &tri_p0, vec3 const &tri_p1, vec3 cons
             int k = 0;
             if (res_nb[LEAF_BACK] && res_nb[LEAF_FRONT])
             {
+#if 0
                 res_total = res_total;
+#endif
                 tri_list[i].m1 = LEAF_BACK;
 #if 0
                 tri_to_process.push( array< int >(), tri_list[i].m2, tri_list[i].m3, tri_list[i].m4, 0);

src/easymesh/easymeshcsg.cpp

@@ -1,13 +1,15 @@
 //
-// EasyMesh-Csg: The code belonging to CSG operations
+//  EasyMesh-Csg: The code belonging to CSG operations
 //
-// Copyright: (c) 2010-2015 Sam Hocevar <sam@hocevar.net>
-//            (c) 2009-2015 Cédric Lecacheur <jordx@free.fr>
-//            (c) 2009-2015 Benjamin "Touky" Huet <huet.benjamin@gmail.com>
-//   This program is free software; you can redistribute it and/or
-//   modify it under the terms of the Do What The Fuck You Want To
-//   Public License, Version 2, as published by Sam Hocevar. See
-//   http://www.wtfpl.net/ for more details.
+//  Copyright © 2010—2019 Sam Hocevar <sam@hocevar.net>
+//            © 2009—2015 Cédric Lecacheur <jordx@free.fr>
+//            © 2009—2015 Benjamin "Touky" Huet <huet.benjamin@gmail.com>
+//
+//  Lol Engine is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
 //
 
 #include <lol/engine-internal.h>
@@ -179,9 +181,10 @@ void EasyMesh::MeshCsg(CSGUsage csg_operation)
         }
     }
 
-    for (int i = 0; i < m_vert.count(); i++)
-        if (length(m_vert[i].m_normal) < 1.0f)
-            i = i;
+//    FIXME: what was this code for?
+//    for (int i = 0; i < m_vert.count(); i++)
+//        if (length(m_vert[i].m_normal) < 1.0f)
+//            i = i;
 
     int dir = 1;
     for (int i = 0; i >= 0 && i < triangle_to_kill.count() - 1; i += dir)

src/gpu/vertexbuffer.cpp

@@ -1,7 +1,7 @@
 //
 //  Lol Engine
 //
-//  Copyright © 2010—2017 Sam Hocevar <sam@hocevar.net>
+//  Copyright © 2010—2019 Sam Hocevar <sam@hocevar.net>
 //
 //  Lol Engine is free software. It comes without any warranty, to
 //  the extent permitted by applicable law. You can redistribute it
@@ -253,7 +253,7 @@ void VertexDeclaration::SetStream(VertexBuffer *vb, ShaderAttrib attribs[])
                  || tlut[type_index].type == GL_DOUBLE
                  || tlut[type_index].type == GL_BYTE
                  || tlut[type_index].type == GL_UNSIGNED_BYTE
-#if defined LOL_USE_GLEW && !defined __APPLE__
+#if defined LOL_USE_GLEW && defined glVertexAttribIPointer && !defined __APPLE__
                  /* If this is not available, don't use it */
                  || !glVertexAttribIPointer
 #endif
@@ -267,7 +267,7 @@ void VertexDeclaration::SetStream(VertexBuffer *vb, ShaderAttrib attribs[])
                                       tlut[type_index].type, normalize,
                                       stride, (GLvoid const *)(uintptr_t)offset);
             }
-#if defined GL_VERSION_3_0
+#if defined GL_VERSION_3_0 && !(defined LOL_USE_GLEW && !defined glVertexAttribIPointer)
             else
             {
                 glVertexAttribIPointer((GLint)reg, tlut[type_index].size,

src/lol/gpu/shader.h

@@ -1,7 +1,7 @@
 //
 //  Lol Engine
 //
-//  Copyright © 2010—2018 Sam Hocevar <sam@hocevar.net>
+//  Copyright © 2010—2019 Sam Hocevar <sam@hocevar.net>
 //
 //  Lol Engine is free software. It comes without any warranty, to
 //  the extent permitted by applicable law. You can redistribute it
@@ -274,7 +274,7 @@ struct ShaderUniform
 public:
     inline ShaderUniform() : flags(0) {}
 
-private:
+protected:
     uintptr_t frag, vert;
     /* FIXME: do we really need this to indicate which locations are valid? */
     uint32_t flags;

src/scene.cpp

@@ -56,7 +56,7 @@ static array<SceneDisplay*> m_scene_displays;
 
 static inline void gpu_marker(char const *message)
 {
-#if LOL_USE_GLEW
+#if LOL_USE_GLEW && defined glStringMarkerGREMEDY
     if (GLEW_GREMEDY_string_marker)
         glStringMarkerGREMEDY(0, message);
 #else