swap_region


Description:

public void swap_region (int rectangles, int n_rectangles)

Swaps a region of the back buffer being rendered too, to the front for display.

rectangles represents the region as array of n_rectangles each defined by 4 sequential (x, y, width, height) integers.

This function also implicitly discards the contents of the color, depth and stencil buffers as if discard_buffers were used. The significance of the discard is that you should not expect to be able to start a new frame that incrementally builds on the contents of the previous frame.

Parameters:

this

A Onscreen framebuffer

rectangles

An array of integer 4-tuples representing rectangles as (x, y, width, height) tuples.

n_rectangles

The number of 4-tuples to be read from rectangles