Cogl.Onscreen.queue_damage_region

### Method

# Cogl Onscreenqueue_damage_region

#### Declaration [src]

    void
    cogl_onscreen_queue_damage_region (
      CoglOnscreen* onscreen,
      const int* rectangles,
      int n_rectangles
    )

#### Description [src]

Implementation for https://www.khronos.org/registry/EGL/extensions/KHR/EGL_KHR_partial_update.txt This immediately queues state to OpenGL that will be used for the next swap. This needs to be called every frame.

#### Parameters

`rectangles`

  Type: `const int*`

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

  The data is owned by the caller of the function.

`n_rectangles`

  Type: `int`

  The number of 4-tuples to be read from `rectangles`.