Cogl.Framebuffer.draw_rectangles

### Method

# Cogl Framebufferdraw_rectangles

#### Declaration [src]

    void
    cogl_framebuffer_draw_rectangles (
      CoglFramebuffer* framebuffer,
      CoglPipeline* pipeline,
      const float* coordinates,
      unsigned int n_rectangles
    )

#### Description [src]

Draws a series of rectangles to `framebuffer` with the given `pipeline` state in the same way that `cogl_framebuffer_draw_rectangle()` does.

The top left corner of the first rectangle is positioned at (coordinates[0], coordinates[1]) and the bottom right corner is positioned at (coordinates[2], coordinates[3]). The positions for the second rectangle are (coordinates[4], coordinates[5]) and (coordinates[6], coordinates[7]) and so on…

The position is the position before the rectangle has been transformed by the model-view matrix and the projection matrix.

As a general rule for better performance its recommended to use this this API instead of calling `cogl_framebuffer_draw_textured_rectangle()` separately for multiple rectangles if all of the rectangles will be drawn together with the same `pipeline` state.

Stability: | Unstable
Available since: | 1.10

#### Parameters

`pipeline` | `CoglPipeline`
| A `CoglPipeline` state object.
| The data is owned by the caller of the function.
`coordinates` | An array of `float`
| An array of coordinates containing groups of 4 float values: [x_1, y_1, x_2, y_2] that are interpreted as two position coordinates; one for the top left of the rectangle (x1, y1), and one for the bottom right of the rectangle (x2, y2).
| The data is owned by the caller of the function.
`n_rectangles` | `unsigned int`
| Number of rectangles defined in `coordinates`.