Package de.coreengine.rendering

Class FrameBufferObject

java.lang.Object

de.coreengine.rendering.FrameBufferObject

Direct Known Subclasses:

GBuffer

public class FrameBufferObject
extends Object

Class that represents a frame buffer object in opengl

Author:

Darius Dinger

Constructor Summary

Constructors

Constructor	Description
FrameBufferObject(int width, int height, boolean multisampled)	Creates new framebuffer in opengl and attaching first color buffer (color buffer 0) and depth buffer

Method Summary

Modifier and Type	Method	Description
void	bind(int readAttachment)	Binding framebuffer as draw framebuffer and bind all color buffers.
void	blitToFbo(FrameBufferObject out, int buffers)	Blitting/writing color and depth information from this fbo into another fbo
void	blitToScreen()	Blitting this fbo onto the glfw window
int	getColorAttachment0()	Returning the id of the color attachment texture, if multisampling is disabled.
int	getDepthAttachment()	Returning the id of the depth texture, if multisampling is disabled.
void	unbind()	Unbing framebuffer (bind 0) and reset glViewport to window dimension

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FrameBufferObject

public FrameBufferObject(int width,
                         int height,
                         boolean multisampled)

Creates new framebuffer in opengl and attaching first color buffer (color buffer 0) and depth buffer

Parameters:

width - Horizontal resolution of the fbo in pixels

height - Vertical resolution of the fbo in pixels

multisampled - Should fbo use multisampling

Method Detail

blitToFbo

public final void blitToFbo(FrameBufferObject out,
                            int buffers)

Blitting/writing color and depth information from this fbo into another fbo

Parameters:

out - Output fbo to blit in

buffers - Wich buffers to blit (GL_DEPTH_BUFFER_BIT, GL_COLOR_BUFFER_BIT)

blitToScreen

public final void blitToScreen()

Blitting this fbo onto the glfw window

bind

public final void bind(int readAttachment)

Binding framebuffer as draw framebuffer and bind all color buffers. Sets glViewport to fbo dimension

Parameters:

readAttachment - Color attachment to bind as read buffer

unbind

public final void unbind()

Unbing framebuffer (bind 0) and reset glViewport to window dimension

getDepthAttachment

public final int getDepthAttachment()

Returning the id of the depth texture, if multisampling is disabled. If multisampling is enabled, returning the id of the depth buffer

Returns:

Id of the depth texture/buffer

getColorAttachment0

public final int getColorAttachment0()

Returning the id of the color attachment texture, if multisampling is disabled. If multisampling is enabled, returning the id of the color attachment buffer

Returns:

Id of the color attachment 0 texture/renderbuffer