ViewportFBO Struct Reference

Simple OpenGL framebuffer object wrapper for off-screen rendering. More...

#include <ViewportFBO.h>

Public Member Functions
void	create (int w, int h)
	Allocate GPU resources at the given resolution.
void	resize (int w, int h)
	Resize the FBO; destroys and recreates if dimensions changed.
void	bind () const
	Bind this FBO as the current render target.
void	unbind () const
	Unbind (revert to the default framebuffer).
void	destroy ()
	Release all GPU resources.

Public Attributes
GLuint	fbo = 0
	Framebuffer object handle.
GLuint	colorTex = 0
	Colour attachment (GL_RGBA8 texture).
GLuint	depthRbo = 0
	Depth attachment (GL_DEPTH_COMPONENT24 renderbuffer).
int	width = 0
	Current width in pixels.
int	height = 0
	Current height in pixels.

Detailed Description

Simple OpenGL framebuffer object wrapper for off-screen rendering.

Manages the lifetime of an FBO, colour texture, and depth renderbuffer. Used by the viewport to render the 3D scene into an ImGui image.

Definition at line 9 of file ViewportFBO.h.

Member Function Documentation

bind()

void ViewportFBO::bind ( ) const

inline

Bind this FBO as the current render target.

Definition at line 53 of file ViewportFBO.h.

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create()

void ViewportFBO::create ( int  w, int  h  )

inline

Allocate GPU resources at the given resolution.

Definition at line 18 of file ViewportFBO.h.

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destroy()

void ViewportFBO::destroy ( )

inline

Release all GPU resources.

Definition at line 59 of file ViewportFBO.h.

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resize()

void ViewportFBO::resize ( int  w, int  h  )

inline

Resize the FBO; destroys and recreates if dimensions changed.

Definition at line 43 of file ViewportFBO.h.

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unbind()

void ViewportFBO::unbind ( ) const

inline

Unbind (revert to the default framebuffer).

Definition at line 56 of file ViewportFBO.h.

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Member Data Documentation

colorTex

GLuint ViewportFBO::colorTex = 0

Colour attachment (GL_RGBA8 texture).

Definition at line 12 of file ViewportFBO.h.

depthRbo

GLuint ViewportFBO::depthRbo = 0

Depth attachment (GL_DEPTH_COMPONENT24 renderbuffer).

Definition at line 13 of file ViewportFBO.h.

fbo

GLuint ViewportFBO::fbo = 0

Framebuffer object handle.

Definition at line 11 of file ViewportFBO.h.

height

int ViewportFBO::height = 0

Current height in pixels.

Definition at line 15 of file ViewportFBO.h.

width

int ViewportFBO::width = 0

Current width in pixels.

Definition at line 14 of file ViewportFBO.h.

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

• Source/Engine/Rendering/ViewportFBO.h