From d5f2c34f2459892539c41a20e33549103fb73c28 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 21 Jan 2015 15:35:19 +0000
Subject: [PATCH] From Andreas Henne, OpenGL core profile fixes required for
 OSX.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14669 16af8721-9629-0410-8352-f15c8da7e697
---
 include/osg/Texture     |  4 +++-
 src/osg/PolygonMode.cpp | 12 ++++++------
 src/osg/State.cpp       |  9 +++++----
 src/osg/Texture.cpp     |  6 ++++--
 4 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/include/osg/Texture b/include/osg/Texture
index be5a33b62..8ed68f3e8 100644
--- a/include/osg/Texture
+++ b/include/osg/Texture
@@ -441,7 +441,9 @@ class OSG_EXPORT Texture : public osg::StateAttribute
 
         virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const
         {
-            usage.usesTextureMode(getTextureTarget());
+            #ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
+                usage.usesTextureMode(getTextureTarget());
+            #endif
             return true;
         }
 
diff --git a/src/osg/PolygonMode.cpp b/src/osg/PolygonMode.cpp
index 238c2eaf2..4beafa11b 100644
--- a/src/osg/PolygonMode.cpp
+++ b/src/osg/PolygonMode.cpp
@@ -68,18 +68,18 @@ PolygonMode::Mode PolygonMode::getMode(Face face) const
 
 void PolygonMode::apply(State&) const
 {
-#ifdef OSG_GL1_AVAILABLE
     if (_modeFront==_modeBack)
     {
         glPolygonMode(GL_FRONT_AND_BACK,(GLenum)_modeFront);
     }
     else
     {
-        glPolygonMode(GL_FRONT,(GLenum)_modeFront);
-        glPolygonMode(GL_BACK,(GLenum)_modeBack);
+        #ifdef OSG_GL1_AVAILABLE
+                glPolygonMode(GL_FRONT,(GLenum)_modeFront);
+                glPolygonMode(GL_BACK,(GLenum)_modeBack);
+        #else
+            OSG_NOTICE << "Warning: PolygonMode::apply(State&) - only GL_FRONT_AND_BACK is supported." << std::endl;
+        #endif
     }
-#else
-    OSG_NOTICE<<"Warning: PolygonMode::apply(State&) - not supported."<<std::endl;
-#endif
 }
 
diff --git a/src/osg/State.cpp b/src/osg/State.cpp
index b318f20f4..0d94bb187 100644
--- a/src/osg/State.cpp
+++ b/src/osg/State.cpp
@@ -945,13 +945,14 @@ void State::initializeExtensionProcs()
     setGLExtensionFuncPtr(_glDrawArraysInstanced, "glDrawArraysInstanced","glDrawArraysInstancedARB","glDrawArraysInstancedEXT");
     setGLExtensionFuncPtr(_glDrawElementsInstanced, "glDrawElementsInstanced","glDrawElementsInstancedARB","glDrawElementsInstancedEXT");
 
-    if ( osg::getGLVersionNumber() >= 2.0 || osg::isGLExtensionSupported(_contextID,"GL_ARB_vertex_shader") || OSG_GLES2_FEATURES)
+    if (osg::getGLVersionNumber() >= 2.0 || osg::isGLExtensionSupported(_contextID, "GL_ARB_vertex_shader") || OSG_GLES2_FEATURES || OSG_GL3_FEATURES)
     {
         glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,&_glMaxTextureUnits);
-        if(OSG_GLES2_FEATURES)
+        #ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
+            glGetIntegerv(GL_MAX_TEXTURE_COORDS, &_glMaxTextureCoords);
+        #else
             _glMaxTextureCoords = _glMaxTextureUnits;
-        else
-            glGetIntegerv(GL_MAX_TEXTURE_COORDS,&_glMaxTextureCoords);
+        #endif
     }
     else if ( osg::getGLVersionNumber() >= 1.3 ||
                                  osg::isGLExtensionSupported(_contextID,"GL_ARB_multitexture") ||
diff --git a/src/osg/Texture.cpp b/src/osg/Texture.cpp
index f3336f998..b04055d50 100644
--- a/src/osg/Texture.cpp
+++ b/src/osg/Texture.cpp
@@ -1909,7 +1909,7 @@ void Texture::applyTexParameters(GLenum target, State& state) const
             wr = CLAMP;
     }
 
-    #if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
+    #if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE) || defined(OSG_GL3_AVAILABLE)
         if (ws == CLAMP) ws = CLAMP_TO_EDGE;
         if (wt == CLAMP) wt = CLAMP_TO_EDGE;
         if (wr == CLAMP) wr = CLAMP_TO_EDGE;
@@ -1982,7 +1982,9 @@ void Texture::applyTexParameters(GLenum target, State& state) const
         {
             glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB);
             glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC_ARB, _shadow_compare_func);
-            glTexParameteri(target, GL_DEPTH_TEXTURE_MODE_ARB, _shadow_texture_mode);
+            #if defined(OSG_GL1_AVAILABLE) || defined(OSG_GL2_AVAILABLE)
+                glTexParameteri(target, GL_DEPTH_TEXTURE_MODE_ARB, _shadow_texture_mode);
+            #endif
 
             // if ambient value is 0 - it is default behaviour of GL_ARB_shadow
             // no need for GL_ARB_shadow_ambient in this case