ShaderProgram

public void activate()

Activates the shader program. This method is normally called for each renderable, or when the shader program is switched to.

Renderable

public void cleanup()

Removes any unused state created by this shader program from the rendering context. This method is normally called when the shader program is no longer needed for the current frame. Note that the program may be needed for the next frame, so it should not deallocate its global resources.

public void compile()

Compiles this shader program.

public void destroy()

Destroys the shader program and frees all allocated resources. The shader will not be used after this method, unless the compile() method is called again.

public void feed(
    float[] mat
)

Feeds a transformation matrix to this shader program. This matrix is also multiplied by the projection matrix and can be directly used to draw elements.

mat	The matrix

public void feed(
    FloatBuffer buffer
)

Feeds a vertex strip for the element to be drawn on the screen.

buffer

The vertex buffer for the element

public void feed(
    float r,
    float g,
    float b,
    float a
)

Feeds a color component to this shader program. All shader programs in this framework are expected to accept one color component. But how they use this component is not defined.

r	The red component of the color
g	The green component of the color
b	The blue component of the color
a	The alpha component of the color