程式語言 - Simple DirectMedia Layer (SDL) - v1.2 - C/C++ - Create Surface from Pixels

參考資訊：
https://www.libsdl.org/release/SDL-1.2.15/docs/html/index.html

main.c

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <SDL.h>

#define W 32
#define H 24

int main(int argc, char **argv)
{
    int x = 0;
    int y = 0;
    SDL_Surface *screen = NULL;
    uint16_t buf[W * H] = { 0 };
 
    SDL_Init(SDL_INIT_VIDEO);
    screen = SDL_SetVideoMode(320, 240, 16, SDL_HWSURFACE);
 
    for (y = 0; y < H; y++) {
        for (x = 0; x < W; x++) {
            if (y < 8) {
                buf[(y * W) + x] = 0xf800;
            }
            else if (y < 16) {
                buf[(y * W) + x] = 0x7e0;
            }
            else {
                buf[(y * W) + x] = 0x1f;
            }
        }
    }

    SDL_Surface *t = SDL_CreateRGBSurfaceFrom(
        buf,
        W,
        H,
        16,
        W * sizeof(uint16_t),
        screen->format->Rmask,
        screen->format->Gmask,
        screen->format->Bmask,
        screen->format->Amask
    );

    SDL_SoftStretch(t, NULL, screen, NULL);
    SDL_Flip(screen);
    SDL_Delay(3000);
 
    SDL_FreeSurface(t);
    SDL_Quit();
    return 0;
}

編譯、執行

$ gcc main.c -o main -lSDL -I/usr/include/SDL
$ ./main