diff --git a/include/osg/Texture b/include/osg/Texture
index 8dbb18704..b91bdb9ab 100644
--- a/include/osg/Texture
+++ b/include/osg/Texture
@@ -90,8 +90,8 @@
     #define GL_LUMINANCE_ALPHA16F_ARB                0x881F
 #endif
 
-#ifndef GL_ARB_PIXEL_DATA
-    #define GL_HALF_FLOAT_ARB                        0x140B
+#ifndef GL_HALF_FLOAT
+    #define GL_HALF_FLOAT                            0x140B
 #endif
 
 #ifndef GL_NV_texture_shader
@@ -136,10 +136,6 @@
     #define GL_FLOAT_RGBA32_NV                      0x888B
 #endif
 
-#ifndef GL_NV_half_float
-    #define GL_HALF_FLOAT_NV                        0x140B
-#endif
-
 #ifndef GL_ATI_texture_float
     #define GL_RGBA_FLOAT32_ATI                     0x8814
     #define GL_RGB_FLOAT32_ATI                      0x8815
@@ -394,10 +390,6 @@
     #define GL_MAX_COMBINED_IMAGE_UNIFORMS    0x90CF
 #endif
 
-#ifndef GL_ARB_half_float_pixel
-    #define GL_HALF_FLOAT                     0x140B
-#endif
-
 namespace osg {
 
 
diff --git a/src/osg/Image.cpp b/src/osg/Image.cpp
index 15f76ba33..92f1ad496 100644
--- a/src/osg/Image.cpp
+++ b/src/osg/Image.cpp
@@ -653,7 +653,7 @@ unsigned int Image::computePixelSizeInBits(GLenum format,GLenum type)
         case(GL_BYTE):
         case(GL_UNSIGNED_BYTE): return 8*computeNumComponents(format);
 
-        case(GL_HALF_FLOAT_NV):
+        case(GL_HALF_FLOAT):
         case(GL_SHORT):
         case(GL_UNSIGNED_SHORT): return 16*computeNumComponents(format);
 
@@ -1651,7 +1651,7 @@ bool Image::isImageTranslucent() const
                                                         0xc0000000u, 1))
                         return true;
                     break;
-                case(GL_HALF_FLOAT_NV):
+                case(GL_HALF_FLOAT):
                     if (_findLowerAlphaValueInRow(s(), (unsigned short*)d + offset,
                                                   (unsigned short)0x3c00, delta))
                         return true;
diff --git a/src/osgPlugins/dds/ReaderWriterDDS.cpp b/src/osgPlugins/dds/ReaderWriterDDS.cpp
index 4525a2286..b8dca23d4 100644
--- a/src/osgPlugins/dds/ReaderWriterDDS.cpp
+++ b/src/osgPlugins/dds/ReaderWriterDDS.cpp
@@ -690,7 +690,7 @@ osg::Image* ReadDDSFile(std::istream& _istream)
             OSG_INFO << "ReadDDSFile info : format = A16B16G16R16F" << std::endl;
             internalFormat = GL_RGBA; // why no transparency?
             pixelFormat    = GL_RGBA;
-            dataType       = GL_HALF_FLOAT_NV;
+            dataType       = GL_HALF_FLOAT;
             break;
         case 0x0000006E: // Q16W16V16U16
             OSG_INFO << "ReadDDSFile info : format = Q16W16V16U16" << std::endl;
@@ -704,7 +704,7 @@ osg::Image* ReadDDSFile(std::istream& _istream)
             return NULL;
 //             internalFormat = GL_RGB;
 //             pixelFormat    = must be GL_RED and GL_GREEN
-//             dataType       = GL_HALF_FLOAT_NV;
+//             dataType       = GL_HALF_FLOAT;
             break;
         case 0x00000073: // G32R32F
             OSG_INFO << "ReadDDSFile info : G32R32F format is not supported"
@@ -724,7 +724,7 @@ osg::Image* ReadDDSFile(std::istream& _istream)
             OSG_INFO << "ReadDDSFile info : format = R16F" << std::endl;
             internalFormat = GL_RGB;
             pixelFormat    = GL_RED;
-            dataType       = GL_HALF_FLOAT_NV;
+            dataType       = GL_HALF_FLOAT;
             break;
         case 0x00000074: // A32B32G32R32F
             OSG_INFO << "ReadDDSFile info : format = A32B32G32R32F" << std::endl;
diff --git a/src/osgPlugins/exr/ReaderWriterEXR.cpp b/src/osgPlugins/exr/ReaderWriterEXR.cpp
index 247923a1a..d06e32f91 100644
--- a/src/osgPlugins/exr/ReaderWriterEXR.cpp
+++ b/src/osgPlugins/exr/ReaderWriterEXR.cpp
@@ -103,7 +103,7 @@ unsigned char *exr_load(std::istream& fin,
         /*RgbaChannels channels =*/ rgbafile.channels();
         (*width_ret) = width = dw.max.x - dw.min.x + 1;
         (*height_ret)=height = dw.max.y - dw.min.y + 1;
-        (*dataType_ret) = GL_HALF_FLOAT_ARB;
+        (*dataType_ret) = GL_HALF_FLOAT;
 
         pixels.resizeErase (height, width);
 
@@ -261,7 +261,7 @@ protected:
             writeOK = false;
             return false;
         }
-        if (!(    dataType == GL_HALF_FLOAT_ARB ||
+        if (!(    dataType == GL_HALF_FLOAT ||
                 dataType == GL_FLOAT))
         {
             writeOK = false;
@@ -274,7 +274,7 @@ protected:
          //Copy data from texture to rgba pixel format
         Array2D<Rgba> outPixels(height,width);
          //If texture is half format
-         if (dataType == GL_HALF_FLOAT_ARB)
+         if (dataType == GL_HALF_FLOAT)
          {
              for (long i = height-1; i >= 0; i--)
              {
@@ -361,7 +361,7 @@ protected:
         int t = height_ret;
         int r = 1;
 
-        if (dataType_ret == GL_HALF_FLOAT_ARB)
+        if (dataType_ret == GL_HALF_FLOAT)
         {
             interNalTextureFormat =
                 numComponents_ret == 1 ? GL_LUMINANCE16F_ARB :
diff --git a/src/osgPlugins/vtf/ReaderWriterVTF.cpp b/src/osgPlugins/vtf/ReaderWriterVTF.cpp
index ff3df33b6..3aad54efc 100644
--- a/src/osgPlugins/vtf/ReaderWriterVTF.cpp
+++ b/src/osgPlugins/vtf/ReaderWriterVTF.cpp
@@ -324,7 +324,7 @@ bool ConvertImageFormat(unsigned int vtfFormat, int& internalFormat,
         case VTF_FORMAT_RGBA16161616F:
             internalFormat = GL_RGBA;
             pixelFormat = GL_RGBA;
-            dataType = GL_HALF_FLOAT_NV;
+            dataType = GL_HALF_FLOAT;
             break;
 
         case VTF_FORMAT_RGBA16161616: