掌機 - Miyoo Mini Plus - C/C++ - SDL v2.0 - Fill Color

main.c

#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
  
int main(int argc, char **argv)
{
    const int w = 320;
    const int h = 240;
    const int bpp = 16;
    SDL_Rect rt = { 0 };
    SDL_Window *window = NULL;
    SDL_Surface *screen = NULL;
    SDL_Texture *texture = NULL;
    SDL_Renderer *renderer = NULL;
  
    SDL_Init(SDL_INIT_VIDEO);
    window = SDL_CreateWindow("main", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, SDL_WINDOW_SHOWN);
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    screen = SDL_CreateRGBSurface(0, w, h, bpp, 0, 0, 0, 0);
    texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB565, SDL_TEXTUREACCESS_STREAMING, w, h);
 
    SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0xff, 0x00, 0x00));
 
    rt.x = 50;
    rt.y = 50;
    rt.w = 30;
    rt.h = 30;
    SDL_FillRect(screen, &rt, SDL_MapRGB(screen->format, 0x00, 0xff, 0x00));
  
    rt.x = 100;
    rt.y = 100;
    rt.w = 50;
    rt.h = 100;
    SDL_FillRect(screen, &rt, SDL_MapRGB(screen->format, 0x00, 0x00, 0xff));
  
    SDL_UpdateTexture(texture, NULL, screen->pixels, screen->pitch);
    SDL_RenderClear(renderer);
    SDL_RenderCopy(renderer, texture, NULL, NULL);
    SDL_RenderPresent(renderer);
  
    SDL_Delay(30000);
  
    SDL_FreeSurface(screen);
    SDL_DestroyTexture(texture);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}

編譯、執行

$ /opt/mini/bin/arm-linux-gnueabihf-gcc \
    -I/opt/mini/arm-buildroot-linux-gnueabihf/sysroot/usr/include/SDL2 \
    -lSDL2 -lSDL2_gfx -lSDL2_image -lSDL2_ttf -lSDL2_mixer -lGLESv2 \
    main.c -o main

# kill -STOP `pidof MainUI`
# LD_LIBRARY_PATH=.:/config/lib:/customer/lib ./main
# kill -CONT `pidof MainUI`