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Faster rendering of UI using iter

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Rafael Caricio 2020-05-30 21:12:23 +02:00
parent 05d04e79ee
commit 9f1be5b1f4
1 changed files with 6 additions and 6 deletions
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12
lvgl/src/display.rs
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@ -1,7 +1,6 @@
use crate::Color; use crate::Color;
use alloc::boxed::Box; use alloc::boxed::Box;
use alloc::rc::Rc; use alloc::vec::Vec;
use core::cell::RefCell;
use core::mem::MaybeUninit; use core::mem::MaybeUninit;
use embedded_graphics; use embedded_graphics;
use embedded_graphics::prelude::*; use embedded_graphics::prelude::*;
@ -75,7 +74,7 @@ impl DisplayDriver {
// the reference is kept in the callback function of the drawing handler // the reference is kept in the callback function of the drawing handler
// we need a reference counter for the drawing target and free the ref counter when the display is // we need a reference counter for the drawing target and free the ref counter when the display is
// destroyed. // destroyed.
type DrawHandler = Rc<RefCell<u8>>; //type DrawHandler = Rc<RefCell<u8>>;
// //
// impl Drop for DrawHandler { // impl Drop for DrawHandler {
// fn drop(&mut self) { // fn drop(&mut self) {
@ -100,19 +99,20 @@ unsafe extern "C" fn display_callback_wrapper<T, C>(
let device = &mut *(display_driver.user_data as *mut T); let device = &mut *(display_driver.user_data as *mut T);
// TODO: create a fixed image buffer iterator somehow, maybe a fixed size array // TODO: create a fixed image buffer iterator somehow, maybe a fixed size array
//let image_buffer = let mut image_buffer = Vec::new();
for y in (*area).y1..=(*area).y2 { for y in (*area).y1..=(*area).y2 {
for x in (*area).x1..=(*area).x2 { for x in (*area).x1..=(*area).x2 {
let raw_color = Color::from_raw(*color_p.add(i)); let raw_color = Color::from_raw(*color_p.add(i));
i = i + 1; i = i + 1;
// TODO: Use device.draw_iter image_buffer.push(drawable::Pixel(
let _ = device.draw_pixel(drawable::Pixel(
Point::new(x as i32, y as i32), Point::new(x as i32, y as i32),
raw_color.into(), raw_color.into(),
)); ));
} }
} }
let _ = device.draw_iter(image_buffer.into_iter());
// Indicate to LittlevGL that you are ready with the flushing // Indicate to LittlevGL that you are ready with the flushing
lvgl_sys::lv_disp_flush_ready(disp_drv); lvgl_sys::lv_disp_flush_ready(disp_drv);
//}); // end of panic::catch_unwind //}); // end of panic::catch_unwind