Correct glFramebufferRenderbuffer behavior for renderbuffer = 0.

src/common/version.h

 #define MAJOR_VERSION 0
 #define MINOR_VERSION 0
 #define BUILD_VERSION 0
-#define BUILD_REVISION 781
+#define BUILD_REVISION 782
 
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)

src/libGLESv2/Framebuffer.cpp

@@ -58,19 +58,19 @@ Renderbuffer *Framebuffer::lookupRenderbuffer(GLenum type, GLuint handle) const
 
 void Framebuffer::setColorbuffer(GLenum type, GLuint colorbuffer)
 {
-    mColorbufferType = type;
+    mColorbufferType = (colorbuffer != 0) ? type : GL_NONE;
     mColorbufferPointer.set(lookupRenderbuffer(type, colorbuffer));
 }
 
 void Framebuffer::setDepthbuffer(GLenum type, GLuint depthbuffer)
 {
-    mDepthbufferType = type;
+    mDepthbufferType = (depthbuffer != 0) ? type : GL_NONE;
     mDepthbufferPointer.set(lookupRenderbuffer(type, depthbuffer));
 }
 
 void Framebuffer::setStencilbuffer(GLenum type, GLuint stencilbuffer)
 {
-    mStencilbufferType = type;
+    mStencilbufferType = (stencilbuffer != 0) ? type : GL_NONE;
     mStencilbufferPointer.set(lookupRenderbuffer(type, stencilbuffer));
 }
 

src/libGLESv2/libGLESv2.cpp

@@ -1987,7 +1987,7 @@ void __stdcall glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenu
     try
     {
         if ((target != GL_FRAMEBUFFER && target != GL_DRAW_FRAMEBUFFER_ANGLE && target != GL_READ_FRAMEBUFFER_ANGLE)
-            || renderbuffertarget != GL_RENDERBUFFER)
+            || (renderbuffertarget != GL_RENDERBUFFER && renderbuffer != 0))
         {
             return error(GL_INVALID_ENUM);
         }
@@ -2009,7 +2009,7 @@ void __stdcall glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenu
                 framebufferHandle = context->getDrawFramebufferHandle();
             }
 
-            if (framebufferHandle == 0 || !framebuffer)
+            if (!framebuffer || (framebufferHandle == 0 && renderbuffer != 0))
             {
                 return error(GL_INVALID_OPERATION);
             }