From Farshid Lashkari, "I've attached a small patch that extends the Image::readImageFromCurrentTexture method to support more depth texture pixel formats (16, 24, 32, 32F). In order to compile, I moved some depth pixel format definitions from FrameBufferObject to Image.

"

include/osg/FrameBufferObject

@@ -108,24 +108,6 @@
 #define GL_MULTISAMPLE_COVERAGE_MODES_NV        0x8E12
 #endif
 
-#ifndef GL_DEPTH_COMPONENT
-#define GL_DEPTH_COMPONENT              0x1902
-#endif
-
-#ifndef GL_VERSION_1_4
-#define GL_DEPTH_COMPONENT16              0x81A5
-#define GL_DEPTH_COMPONENT24              0x81A6
-#define GL_DEPTH_COMPONENT32              0x81A7
-#endif
-
-#ifndef GL_DEPTH_COMPONENT32F
-#define GL_DEPTH_COMPONENT32F             0x8CAC
-#endif
-
-#ifndef GL_DEPTH_COMPONENT32F_NV
-#define GL_DEPTH_COMPONENT32F_NV          0x8DAB
-#endif
-
 #ifndef GL_EXT_packed_depth_stencil
 #define GL_EXT_packed_depth_stencil 1
 #define GL_DEPTH_STENCIL_EXT 0x84F9

include/osg/Image

@@ -97,6 +97,24 @@
     #define GL_ETC1_RGB8_OES        0x8D64
 #endif
 
+#ifndef GL_DEPTH_COMPONENT
+#define GL_DEPTH_COMPONENT              0x1902
+#endif
+
+#ifndef GL_VERSION_1_4
+#define GL_DEPTH_COMPONENT16              0x81A5
+#define GL_DEPTH_COMPONENT24              0x81A6
+#define GL_DEPTH_COMPONENT32              0x81A7
+#endif
+
+#ifndef GL_DEPTH_COMPONENT32F
+#define GL_DEPTH_COMPONENT32F             0x8CAC
+#endif
+
+#ifndef GL_DEPTH_COMPONENT32F_NV
+#define GL_DEPTH_COMPONENT32F_NV          0x8DAB
+#endif
+
 namespace osg {
 
 // forward declare