1 files changed, 77 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/rendering/pbuffer.h b/source/blender/freestyle/intern/rendering/pbuffer.h
new file mode 100755
index 00000000000..7f11f461b1c
--- /dev/null
+++ b/source/blender/freestyle/intern/rendering/pbuffer.h
@@ -0,0 +1,77 @@
+#ifndef PBUFFERS_H
+#define PBUFFERS_H
+
+#ifndef WIN32
+#  ifdef __MACH__
+#    include <OpenGL/gl.h>
+#  else
+#    include <GL/gl.h>
+#    include <GL/glx.h>
+#  endif
+
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+// Interface of PBuffer
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+class PBuffer
+{
+public:
+  enum FormatOption
+  {
+    DoubleBuffer            = 0x0001,
+    DepthBuffer             = 0x0002,
+    Rgba                    = 0x0004,
+    StencilBuffer           = 0x0020,
+    SingleBuffer            = DoubleBuffer  << 16,
+    NoDepthBuffer           = DepthBuffer   << 16,
+    ColorIndex              = Rgba          << 16,
+    NoStencilBuffer         = StencilBuffer << 16,
+  };
+     
+  PBuffer(const unsigned int width,
+	  const unsigned int height,
+	  int format);
+  bool create(const bool shareContext = false,
+	      const bool shareLists = false);
+  virtual ~PBuffer();
+  
+  virtual bool makeCurrent();
+  unsigned int width() const;
+  unsigned int height() const;
+protected:
+  ///! Flags indicating the type of pbuffer.
+  int          format_;
+  ///! Flag indicating if the rendering context is shared with another context.
+  bool         sharedContext_;
+  //! Flag indicating if display lists should be shared between rendering
+  // contexts.(If the rendering context is shared (default), then display
+  // lists are automatically shared).
+  bool         sharedLists_; 
+  Display*     display_;
+  GLXPbuffer   glxPbuffer_;
+  GLXContext   glxContext_;    
+  unsigned int width_;
+  unsigned int height_;
+};
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+// Interface of PBufferEx
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+/*!
+ * pbuffer layer to keep previous pbuffer states.
+ */
+class PBufferEx : public PBuffer
+{
+public:
+  PBufferEx(const unsigned int width,
+	    const unsigned int height,
+	    const int mode );
+  virtual bool makeCurrent();
+  bool endCurrent();
+private:
+  Display*    oldDisplay_;
+  GLXDrawable glxOldDrawable_;
+  GLXContext  glxOldContext_;
+  int	      vp[4];
+};
+
+#endif //PBUFFERS_H
+#endif //WIN32