Unix version, the colors blue and red are confused

[otosan-maker]

That is, I have fix the problem I had with my Unix version of micropython, it was not a Ubuntu (lib) version problem; it is a problem with SDL and Nvidia. I have prepared a VirtualBox machine to develop in UNIX, and it works.

However, RGB colors are BGR colors. Do you know how I can fix this?
I send a few images to show what I want to show.

[kdschlosser]

paste the code you are using.

[otosan-maker]

from micropython import const # NOQA
import lcd_bus # NOQA

_WIDTH = const(480)
_HEIGHT = const(320)

bus = lcd_bus.SDLBus(flags=0)

buf1 = bus.allocate_framebuffer(_WIDTH * _HEIGHT * 3, 0)

import lvgl as lv # NOQA
import sdl_display # NOQA

display = sdl_display.SDLDisplay(
data_bus=bus,
display_width=_WIDTH,
display_height=_HEIGHT,
frame_buffer1=buf1,
color_space=lv.COLOR_FORMAT.RGB888
)
display.init()

import sdl_pointer
import task_handler

mouse = sdl_pointer.SDLPointer()

th = task_handler.TaskHandler(duration=5)

scrn = lv.screen_active()
scrn.set_style_bg_color(lv.color_hex(0x0000FF), 0)

slider = lv.slider(scrn)
slider.set_size(300, 25)
slider.center()

[kdschlosser]

OK you are going to have to clone the repo again. I just made a change to the code that will fix the colors. You are going to need to adjust your code a slight bit...

You want to change this..

display = sdl_display.SDLDisplay(
    data_bus=bus,
    display_width=_WIDTH,
    display_height=_HEIGHT,
    frame_buffer1=buf1, 
    color_space=lv.COLOR_FORMAT.RGB888
)

to read..

display = sdl_display.SDLDisplay(
    data_bus=bus,
    display_width=_WIDTH,
    display_height=_HEIGHT,
    frame_buffer1=buf1, 
    color_byte_order=sdl_display.BYTE_ORDER_BGR,
    color_space=lv.COLOR_FORMAT.RGB888
)

and that should do it.

[otosan-maker]

I have tested it twice, cloning and compiling on two different computers, but the problem is the same.

I want to use RGB colors, but when I use a red colour it shows blue.

I have tested :
color_byte_order=sdl_display.BYTE_ORDER_RGB,

but the result is the same.

[kdschlosser]

You need to use

 color_byte_order=sdl_display.BYTE_ORDER_BGR,

not

 color_byte_order=sdl_display.BYTE_ORDER_RGB,

[kdschlosser]

You have to run the code I told you to run otherwise the result is going to be the same.

[otosan-maker]

Yes, i mean I have tried both of them, with the same result.