codeanticode.glgraphics
Class GLTexturePingPong

java.lang.Object
  codeanticode.glgraphics.GLTexturePingPong

public class GLTexturePingPong
extends java.lang.Object

This class encapsulates two GLTextures, that are labeled as read and write. The role of each texture is swaped upon calling the swap function. This class is intended to simplify the code in GP-GPU applications, where there is the need to apply iterative operations on textures holding float data that represents coordinates or velocities of particles, etc. This technique of alternatively swaping the textures to allow for read/write operations is called "Ping-Pong".

Constructor Summary

GLTexturePingPong(GLTexture tex0, GLTexture tex1)
The constructor of the class.

Method Summary

GLTexture	getNewTex() Returns the current write texture.
GLTexture	getOldTex() Returns the current read texture.
GLTexture	getReadTex() Returns the current read texture.
GLTexture	getWriteTex() Returns the current write texture.
void	init() Inits the read and write indices.
void	setNewTex(int idx) Sets the value for the write texture.
void	setOldTex(int idx) Sets the value for the read texture.
void	setReadTex(int idx) Sets the value for the read texture.
void	setWriteTex(int idx) Sets the value for the write texture.
void	swap() Swaps the two textures, read becomes write and viceversa.

Methods inherited from class java.lang.Object

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

Constructor Detail

GLTexturePingPong

public GLTexturePingPong(GLTexture tex0,
                         GLTexture tex1)

The constructor of the class. Sets the two textures to use.

Parameters:

tex0 - GLTexture

tex1 - GLTexture

Method Detail

getReadTex

public GLTexture getReadTex()

Returns the current read texture.

Returns:

GLTexture

setReadTex

public void setReadTex(int idx)

Sets the value for the read texture.

Parameters:

idx - int

getWriteTex

public GLTexture getWriteTex()

Returns the current write texture.

Returns:

GLTexture

setWriteTex

public void setWriteTex(int idx)

Sets the value for the write texture.

Parameters:

idx - int

getOldTex

public GLTexture getOldTex()

Returns the current read texture.

Returns:

GLTexture

setOldTex

public void setOldTex(int idx)

Sets the value for the read texture.

Parameters:

idx - int

getNewTex

public GLTexture getNewTex()

Returns the current write texture.

Returns:

GLTexture

setNewTex

public void setNewTex(int idx)

Sets the value for the write texture.

Parameters:

idx - int

init

public void init()

Inits the read and write indices.

swap

public void swap()

Swaps the two textures, read becomes write and viceversa.