# lv_draw_opengles.h (/api/draw/opengles/lv_draw_opengles_h)
Functions [#functions]
lv_draw_opengles_init [#lv_draw_opengles_init]
```c title=" " lineNumbers=1
void lv_draw_opengles_init(void)
```
lv_draw_opengles_deinit [#lv_draw_opengles_deinit]
```c title=" " lineNumbers=1
void lv_draw_opengles_deinit(void)
```
lv_draw_opengles_clear_layer_area [#lv_draw_opengles_clear_layer_area]
Clear a region of the GPU texture that backs the given layer. Needed because `lv_draw_buf_clear` operates on the CPU draw buffer, which is only a dummy placeholder when the layer is rendered to a GL texture. Without this, a transparent screen background leaves stale pixels on the texture between frames.
```c title=" " lineNumbers=1
void lv_draw_opengles_clear_layer_area(lv_layer_t *layer, const lv_area_t *area)
```
Parameters
| Name | Type | Description |
| ------- | -------------------------------------------------------- | ------------------------------------------- |
| `layer` | | layer whose backing texture must be cleared |
| `area` | | area (in layer/screen coordinates) to clear |
Dependencies [#dependencies]