2005 Sams Publishing glGetRenderbufferParameteriv 3G glGetRenderbufferParameteriv return parameters of a renderbuffer object void glGetRenderbufferParameteriv GLenum target GLenum pname GLint * params target Specifies the target renderbuffer object. The symbolic constant must be GL_RENDERBUFFER. pname Specifies the symbolic name of a renderbuffer object parameter. Accepted values are GL_RENDERBUFFER_WIDTH, GL_RENDERBUFFER_HEIGHT, GL_RENDERBUFFER_INTERNAL_FORMAT, GL_RENDERBUFFER_RED_SIZE, GL_RENDERBUFFER_GREEN_SIZE, GL_RENDERBUFFER_BLUE_SIZE, GL_RENDERBUFFER_ALPHA_SIZE, GL_RENDERBUFFER_DEPTH_SIZE, or GL_RENDERBUFFER_STENCIL_SIZE. params Returns the requested parameter. glGetRenderbufferParameteriv returns in params a selected parameter of the currently bound renderbuffer object. pname names a specific renderbuffer object parameter, as follows: GL_RENDERBUFFER_WIDTH params returns the width in pixels of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_HEIGHT params returns the height in pixels of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_INTERNAL_FORMAT params returns the internal format of the image of the currently bound renderbuffer. The initial value is GL_RGBA4. GL_RENDERBUFFER_RED_SIZE params returns the resolution in bits for the red component of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_GREEN_SIZE params returns the resolution in bits for the green component of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_BLUE_SIZE params returns the resolution in bits for the blue component of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_ALPHA_SIZE params returns the resolution in bits for the alpha component of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_DEPTH_SIZE params returns the resolution in bits for the depth component of the image of the currently bound renderbuffer. The initial value is 0. GL_RENDERBUFFER_STENCIL_SIZE params returns the resolution in bits for the stencil component of the image of the currently bound renderbuffer. The initial value is 0. The resolution of components reported by glGetRenderbufferParameteriv are the actual resolutions at which the components are stored, which may be different than those requested by the internalformat parameter of glRenderbufferStorage. If an error is generated, no change is made to the contents of params. GL_INVALID_ENUM is generated if target is not GL_RENDERBUFFER. GL_INVALID_ENUM is generated if pname is not GL_RENDERBUFFER_WIDTH, GL_RENDERBUFFER_HEIGHT, GL_RENDERBUFFER_INTERNAL_FORMAT, GL_RENDERBUFFER_RED_SIZE, GL_RENDERBUFFER_GREEN_SIZE, GL_RENDERBUFFER_BLUE_SIZE, GL_RENDERBUFFER_ALPHA_SIZE, GL_RENDERBUFFER_DEPTH_SIZE, or GL_RENDERBUFFER_STENCIL_SIZE. GL_INVALID_OPERATION is generated if the reserved renderbuffer object name 0 is bound. glBindRenderBuffer, glRenderbufferStorage Copyright 2008 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.