ch.hevs.gdx2d.lib.renderers

Class ShaderRenderer

java.lang.Object

ch.hevs.gdx2d.lib.renderers.ShaderRenderer

All Implemented Interfaces:

Disposable

Direct Known Subclasses:

CircleShaderRenderer

public class ShaderRenderer
extends Object
implements Disposable

Render things using a GLSL shader program included in a file.

Version:

0.5

Author:

Pierre-André Mudry

Field Summary

Fields

Modifier and Type	Field and Description
protected SpriteBatch	batch
protected String	fragmentShaderInclude
protected int	h
protected ShaderProgram	shader
protected Texture[]	tex
protected int	textureCount
protected FileHandle	vertexShader
protected int	w

Constructor Summary

Constructors

Constructor and Description
ShaderRenderer(String shaderFileName, int width, int height) Create a shader render from an existing shader file.

Method Summary

Modifier and Type	Method and Description
int	addEmptyTexture(int width, int height, String textureIdentifier) See addTexture(String, String)
int	addTexture(String texturePath, String textureIdentifier) Adds a new texture from an image to the OpenGL pipeline.
int	addTexture(Texture t, String n)
void	dispose() Release the used resources properly.
void	render(int posX, int posY, float time) Render the shader.
void	setTexture(Texture colorBufferTexture, int id)
void	setUniform(String uniform, boolean value) Sets an uniform pair (key, value) that is passed to the shader
void	setUniform(String uniform, float value) Sets an uniform pair (key, value) that is passed to the shader
void	setUniform(String uniform, float[] values) Sets an uniform pair (key, value) that is passed to the shader
void	setUniform(String uniform, int value) Set an uniform pair (key, value) that is passed to the shader.
void	setUniform(String uniform, Vector2 values) Sets an uniform pair (key, value) that is passed to the shader
void	setUniform(String uniform, Vector3 values) Sets an uniform pair (key, value) that is passed to the shader

Methods inherited from class java.lang.Object

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

Field Detail

fragmentShaderInclude

protected final String fragmentShaderInclude

shader

protected ShaderProgram shader

tex

protected Texture[] tex

textureCount

protected int textureCount

batch

protected SpriteBatch batch

w

protected int w

h

protected int h

vertexShader

protected FileHandle vertexShader

Constructor Detail

ShaderRenderer

public ShaderRenderer(String shaderFileName,
                      int width,
                      int height)

Create a shader render from an existing shader file.

Parameters:

shaderFileName - the shader file name to renderer

width - the shader width

height - the shader height

Method Detail

render

public void render(int posX,
                   int posY,
                   float time)

Render the shader.

Parameters:

posX - X center position of the texture shader to draw

posY - Y center position of the texture shader to draw

time - the time information to pass to the shader

setUniform

public void setUniform(String uniform,
                       int value)

Set an uniform pair (key, value) that is passed to the shader.

Parameters:

uniform - the uniform variable to change

value - the value of the variable, int

setUniform

public void setUniform(String uniform,
                       boolean value)

Sets an uniform pair (key, value) that is passed to the shader

Parameters:

uniform - The uniform variable to change

value - The value of the variable, boolean

setUniform

public void setUniform(String uniform,
                       float value)

Sets an uniform pair (key, value) that is passed to the shader

Parameters:

uniform - The uniform variable to change

value - The value of the variable, float

setUniform

public void setUniform(String uniform,
                       float[] values)

Sets an uniform pair (key, value) that is passed to the shader

Parameters:

uniform - The uniform variable to change

values - The value of the variable, vec2

setUniform

public void setUniform(String uniform,
                       Vector2 values)

Sets an uniform pair (key, value) that is passed to the shader

Parameters:

uniform - The uniform variable to change

values - The value of the variable, vec2

setUniform

public void setUniform(String uniform,
                       Vector3 values)

Sets an uniform pair (key, value) that is passed to the shader

Parameters:

uniform - The uniform variable to change

values - The value of the variable, vec3

addTexture

public int addTexture(Texture t,
                      String n)

addEmptyTexture

public int addEmptyTexture(int width,
                           int height,
                           String textureIdentifier)

See addTexture(String, String)

Parameters:

width - The width of the texture to create

height - The height of the texture to create

textureIdentifier - The uniform name passed to the shader

addTexture

public int addTexture(String texturePath,
                      String textureIdentifier)

Adds a new texture from an image to the OpenGL pipeline. It is bound with a name and a number.

Parameters:

texturePath - The image to load as a texture

textureIdentifier - The identifier uniform that will be passed to the shader

Returns:

The texture number that was created

dispose

public void dispose()

Release the used resources properly.

Specified by:

dispose in interface Disposable

setTexture

public void setTexture(Texture colorBufferTexture,
                       int id)