On Fri, Nov 4, 2022 at 2:53 PM Piotr Grochowski < [email protected]> wrote:
> How come you are telling me to create a topic for this when you’re > replying to the topic I already made? > This is a thread on the mailing list. Since this seems like a bug, I was suggesting we open a bug at https://github.com/emscripten-core/emscripten/issues. > On Friday, November 4, 2022 at 10:18:16 PM UTC+1 [email protected] 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 <[email protected]> >> 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)? >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "emscripten-discuss" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/emscripten-discuss/b6b2f368-7ef3-4ec6-89a4-3ef7862108b8n%40googlegroups.com >>> <https://groups.google.com/d/msgid/emscripten-discuss/b6b2f368-7ef3-4ec6-89a4-3ef7862108b8n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/2616661a-059c-405f-aeb8-f359d5ee8459n%40googlegroups.com > <https://groups.google.com/d/msgid/emscripten-discuss/2616661a-059c-405f-aeb8-f359d5ee8459n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CAL_va29dzVB__8_37FYpmoxenkm-%3Dw1dLk-KEi0%3DczkpyuPq2w%40mail.gmail.com.
