How come you are telling me to create a topic for this when you’re replying
to the topic I already made?
On Friday, November 4, 2022 at 10:18:16 PM UTC+1 s...@google.com wrote:
> I was able to reproduce this locally too. Would you mind opening a bug on
> the emscripten tracker?
>
> On Fri, Nov 4, 2022 at 12:55 PM Piotr Grochowski <anydesksu...@gmail.com>
> wrote:
>
>> SDL2 library in emscripten swaps red and blue channels which makes it
>> false color.
>>
>> //C:\dm\bin\dmc colortest.cpp -o -I C:\dm\stlport\stlport -I
>> C:\Users\Admin\Downloads\SDL2-devel-2.0.22-VC\SDL2-2.0.22\include
>> C:\Users\Admin\Downloads\SDL2-devel-2.0.22-VC\SDL2-2.0.22\lib\x86\sdl.lib
>> -L/exet:nt/su:windows:4.0
>> //emcc colortest.cpp -O3 -sUSE_SDL=2 -sASYNCIFY -sALLOW_MEMORY_GROWTH -o
>> colortest.html
>> #define SDL_MAIN_HANDLED
>> #include <SDL.h>
>> int main(int argc, char *argv[]){
>> const int width=128; const int height=64;
>> SDL_Window* window = SDL_CreateWindow("color test",
>> SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, width, height, 0);
>> SDL_Surface* screenSurface = SDL_GetWindowSurface(window);
>> unsigned* bitmapdata = (unsigned*)screenSurface->pixels;
>> for(int
>> i=0;i<width*height;i++)bitmapdata[i]=(i>>5&1?0xFF0000:0)|(i>>6&1?0x00FF00:0)|(i>>12&1?0x0000FF:0);
>> while (1){
>> SDL_Event event_;
>> while (SDL_PollEvent(&event_)) if(event_.type==SDL_QUIT)exit(0);
>> SDL_UpdateWindowSurface(window); SDL_Delay(1);
>> }
>> return 0;
>> }
>>
>> https://i.imgur.com/EMQhoF5.png
>>
>> How do I ensure the video image is always drawn correctly when
>> represented in 0x00RRGGBB (note: little endian byte order is BGR)?
>>
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>>
>
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