yg.postproc

Functions for GL post processing.

function yg.postproc.init()

Activates post processing. Returns true on success, false otherwise.

• If both width and height are > 0, this will be the frame buffer size
• If both width and height are 0, the frame buffer size will be synced to the window size
• If exactly one of width and height is 0, this dimensions will be set suitable, maintaining the windows aspect ratio

yg.postproc.init(width, height) -> boolean

Argument	Type	Info
width	number	Width of the frame buffer. If 0, will be set automatically
height	number	Height of the frame buffer. If 0, will be set automatically

function yg.postproc.shutdown()

Shuts down post processing.

yg.postproc.shutdown() -> void

function yg.postproc.isInitialized()

Returns true if post processing is initialized (active), false otherwise.

yg.postproc.isInitialized() -> boolean

function yg.postproc.resize()

Resizes the post processing frame buffer. See yg.postproc.init()

yg.postproc.resize(width, height) -> void

Argument	Type	Info
width	number	Width of the frame buffer. If 0, will be set automatically
height	number	Height of the frame buffer. If 0, will be set automatically

function yg.postproc.use()

Sets the post processing shader to use.

yg.postproc.use(shader) -> void

Argument	Type	Info
shader	yg.gl.Shader	Post processing shader to use. nil for neutral shader