diff --git a/gb.opengl/src/GL.c b/gb.opengl/src/GL.c
index 5cf495823..9d5b551bb 100644
--- a/gb.opengl/src/GL.c
+++ b/gb.opengl/src/GL.c
@@ -325,10 +325,13 @@ GB_DESC Cgl[] =
 	
 	/* 310; GL_EXT_framebuffer_object (incomplete) */
 	/* framebufferobject.c */
-	GB_STATIC_METHOD("GenFramebuffersEXT", "i", GLGENFRAMEBUFFERSEXT, "(N)i"),
-	GB_STATIC_METHOD("FramebufferTexture2dEXT", NULL, GLFRAMEBUFFERTEXTURE2DEXT, "(Target)i(Attachment)i(Textarget)i(Texture)i(Level)i"),
-	GB_STATIC_METHOD("BindFramebufferEXT", NULL, GLBINDFRAMEBUFFERSEXT, "(Target)i(Framebuffer)i"),
+	GB_STATIC_METHOD("BindFramebufferEXT", NULL, GLBINDFRAMEBUFFEREXT, "(Target)i(Framebuffer)i"),
+	GB_STATIC_METHOD("BindRenderbufferEXT",NULL, GLBINDRENDERBUFFEREXT, "(Target)i(Renderbuffer)i"),
 	GB_STATIC_METHOD("CheckFramebufferStatusEXT", "i", GLCHECKFRAMEBUFFERSTATUSEXT, "(Target)i"),
+	GB_STATIC_METHOD("FramebufferTexture2dEXT", NULL, GLFRAMEBUFFERTEXTURE2DEXT, "(Target)i(Attachment)i(TexTarget)i(Texture)i(Level)i"),
+	GB_STATIC_METHOD("GenFramebuffersEXT", "Integer[]", GLGENFRAMEBUFFERSEXT, "(Count)i"),
+	GB_STATIC_METHOD("GenRenderbuffersEXT", "Integer[]", GLGENRENDERBUFFERSEXT, "(Count)i"),
+	GB_STATIC_METHOD("IsRenderbufferEXT", "b", GLISRENDERBUFFEREXT, "(Renderbuffer)i"),
 
 	// Old constant naming support
 	
diff --git a/gb.opengl/src/framebufferobject.c b/gb.opengl/src/framebufferobject.c
index b2ea7147f..ea7d51a1f 100644
--- a/gb.opengl/src/framebufferobject.c
+++ b/gb.opengl/src/framebufferobject.c
@@ -25,26 +25,18 @@
 
 #include "GL.h"
 
-BEGIN_METHOD(GLFRAMEBUFFERTEXTURE2DEXT, GB_INTEGER Target; GB_INTEGER Attachment; GB_INTEGER Textarget; GB_INTEGER Texture; GB_INTEGER Level)
-
-	 glFramebufferTexture2DEXT(VARG(Target), VARG(Attachment), VARG(Textarget), VARG(Texture), VARG(Level));
-
-END_METHOD
-
-BEGIN_METHOD(GLGENFRAMEBUFFERSEXT, GB_INTEGER N)
-
-	GLuint framebuffers;
-	glGenFramebuffersEXT(VARG(N), &framebuffers);
-	GB.ReturnInteger(framebuffers);
-
-END_METHOD
-
-BEGIN_METHOD(GLBINDFRAMEBUFFERSEXT, GB_INTEGER Target; GB_INTEGER Framebuffer)
+BEGIN_METHOD(GLBINDFRAMEBUFFEREXT, GB_INTEGER Target; GB_INTEGER Framebuffer)
 
 	glBindFramebufferEXT(VARG(Target), VARG(Framebuffer));
 
 END_METHOD
 
+BEGIN_METHOD(GLBINDRENDERBUFFEREXT, GB_INTEGER Target; GB_INTEGER Renderbuffer)
+
+	glBindRenderbufferEXT(VARG(Target), VARG(Renderbuffer));
+
+END_METHOD
+
 BEGIN_METHOD(GLCHECKFRAMEBUFFERSTATUSEXT, GB_INTEGER Target)
 
 	GLuint result;
@@ -53,4 +45,54 @@ BEGIN_METHOD(GLCHECKFRAMEBUFFERSTATUSEXT, GB_INTEGER Target)
 
 END_METHOD
 
+BEGIN_METHOD(GLFRAMEBUFFERTEXTURE2DEXT, GB_INTEGER Target; GB_INTEGER Attachment; GB_INTEGER Textarget; GB_INTEGER Texture; GB_INTEGER Level)
+
+	 glFramebufferTexture2DEXT(VARG(Target), VARG(Attachment), VARG(Textarget), VARG(Texture), VARG(Level));
+
+END_METHOD
+
+BEGIN_METHOD(GLGENFRAMEBUFFERSEXT, GB_INTEGER count)
+
+	GLuint framebuffers[VARG(count)];
+	int i, count = VARG(count);
+	GB_ARRAY iArray;
+
+	if (count<=0)
+		return;
+
+	GB.Array.New(&iArray , GB_T_INTEGER , count);
+	glGenFramebuffersEXT(VARG(count), framebuffers);
+
+	for (i=0;i<count; i++)
+		*((GLuint *)GB.Array.Get(iArray, i)) = framebuffers[i];
+	
+	GB.ReturnObject(iArray);
+
+END_METHOD
+
+BEGIN_METHOD(GLGENRENDERBUFFERSEXT, GB_INTEGER count)
+
+	GLuint renderbuffers[VARG(count)];
+	int i, count = VARG(count);
+	GB_ARRAY iArray;
+
+	if (count<=0)
+		return;
+
+	GB.Array.New(&iArray , GB_T_INTEGER , count);
+	glGenRenderbuffersEXT(VARG(count), renderbuffers);
+
+	for (i=0;i<count; i++)
+		*((GLuint *)GB.Array.Get(iArray, i)) = renderbuffers[i];
+	
+	GB.ReturnObject(iArray);
+
+END_METHOD
+
+BEGIN_METHOD(GLISRENDERBUFFEREXT, GB_INTEGER buffer)
+
+	GB.ReturnBoolean(glIsRenderbufferEXT(VARG(buffer)));
+
+END_METHOD
+
 // 
\ No newline at end of file
diff --git a/gb.opengl/src/framebufferobject.h b/gb.opengl/src/framebufferobject.h
index 043a57831..b84d88615 100644
--- a/gb.opengl/src/framebufferobject.h
+++ b/gb.opengl/src/framebufferobject.h
@@ -25,9 +25,12 @@
 #define __FBO_H
 
 #include "main.h"
-DECLARE_METHOD(GLGENFRAMEBUFFERSEXT);
-DECLARE_METHOD(GLFRAMEBUFFERTEXTURE2DEXT);
-DECLARE_METHOD(GLBINDFRAMEBUFFERSEXT);
+DECLARE_METHOD(GLBINDFRAMEBUFFEREXT);
+DECLARE_METHOD(GLBINDRENDERBUFFEREXT);
 DECLARE_METHOD(GLCHECKFRAMEBUFFERSTATUSEXT);
+DECLARE_METHOD(GLFRAMEBUFFERTEXTURE2DEXT);
+DECLARE_METHOD(GLGENFRAMEBUFFERSEXT);
+DECLARE_METHOD(GLGENRENDERBUFFERSEXT);
+DECLARE_METHOD(GLISRENDERBUFFEREXT);
 
 #endif /* __FBO_H */