OpenTissue::gl::Renderbuffer Class Reference

#include <gl_render_buffer.h>

List of all members.

Public Member Functions
	Renderbuffer ()
	Renderbuffer (GLenum internal_format, int width, int height)
	~Renderbuffer ()
void	bind ()
void	unbind ()
void	set (GLenum internal_format, int width, int height)
GLuint	get_id () const
Static Public Member Functions
static GLint	get_max_size ()
Static Protected Member Functions
static GLuint	create_buffer_id ()
Protected Attributes
GLuint	m_buffer_id
	The render buffer identifier of this render buffer.

---

Detailed Description

Render Buffer. This class encapsulates the render buffer OpenGL object described in the frame buffer object (FBO) OpenGL spec. See the official spec at: http://oss.sgi.com/projects/ogl-sample/registry/EXT/framebuffer_object.txt for complete details.

A "render buffer" is a chunk of GPU memory used by frame buffer objects to represent "traditional" framebuffer memory (depth, stencil, and color buffers). By "traditional," we mean that the memory cannot be bound as a texture. With respect to GPU shaders, Render buffer memory is "write-only." Framebuffer operations such as alpha blending, depth test, alpha test, stencil test, etc. read from this memory in post-fragement-shader (ROP) operations.

The most common use of render buffers is to create depth and stencil buffers. Note that as of 7/1/05, NVIDIA drivers to do not support stencil Renderbuffers.

Usage Notes: 1) "internal_format" can be any of the following: Valid OpenGL internal formats beginning with: RGB, RGBA, DEPTH_COMPONENT

or a stencil buffer format (not currently supported in NVIDIA drivers as of 7/1/05). STENCIL_INDEX1_EXT STENCIL_INDEX4_EXT STENCIL_INDEX8_EXT STENCIL_INDEX16_EXT

This implementation was inspired by the ideas in the FBO class from GPUGP by Aaron Lefohn.

---

Constructor & Destructor Documentation

OpenTissue::gl::Renderbuffer::Renderbuffer

(

)

[inline]

OpenTissue::gl::Renderbuffer::Renderbuffer	(	GLenum	internal_format,
		int	width,
		int	height
	)			[inline]

Specialized Constructor.

Parameters:

	internal_format	The format of the render buffer: RGB, RGBA, DEPTH_COMPONENT etc..
	width	The number of pixels in a row.
	height	The number of rows in the buffer.

OpenTissue::gl::Renderbuffer::~Renderbuffer

(

)

[inline]

---

Member Function Documentation

void OpenTissue::gl::Renderbuffer::bind

(

)

[inline]

static GLuint OpenTissue::gl::Renderbuffer::create_buffer_id

(

)

[inline, static, protected]

Create Unused Render Buffer identifier.

Returns:

The unused identifier.

GLuint OpenTissue::gl::Renderbuffer::get_id

(

)

const [inline]

Get Identifier.

Returns:

The identifier of the render buffer.

static GLint OpenTissue::gl::Renderbuffer::get_max_size

(

)

[inline, static]

Get Maximum Size.

Returns:

The maximum size of a render buffer. I.e. the maximum number of ``pixels'' in widht and height arguments.

void OpenTissue::gl::Renderbuffer::set	(	GLenum	internal_format,
		int	width,
		int	height
	)			[inline]

Set Render Buffer Format and Size.

Parameters:

	internal_format	The format of the render buffer: RGB, RGBA, DEPTH_COMPONENT etc..
	width	The number of pixels in a row.
	height	The number of rows in the buffer.

void OpenTissue::gl::Renderbuffer::unbind

(

)

[inline]

---

Member Data Documentation

GLuint OpenTissue::gl::Renderbuffer::m_buffer_id [protected]

The render buffer identifier of this render buffer.

---

The documentation for this class was generated from the following file:

• /home/hauberg/Dokumenter/Capture/humim-tracker-0.1/src/OpenTissue/OpenTissue/utility/gl/gl_render_buffer.h