掌機 - Nintendo 3DS - C/C++ - Screen Tearing Test

參考資訊：
https://hub.docker.com/r/greatwizard/devkitarm-3ds

main.c

#include <3ds.h>
#include <stdio.h>
#include <string.h>
 
int main(void)
{
    u16 *fb = NULL;
    int x = 0;
    int y = 0;
    int z = 0;
    u16 col[] = { 0xf800, 0x7e0, 0x1f };
 
    gfxInitDefault();
    gfxSetDoubleBuffering(GFX_TOP, true);
    gfxSetScreenFormat(GFX_TOP, GSP_RGB565_OES);
 
    while (z < 600) {
        fb = (u16 *)gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
        for (y = 0; y < 240; y++) {
            for (x = 0; x < 400; x++) {
                *fb++ = col[z % 3];
            }
        }
        z += 1;
 
        gfxFlushBuffers();
        gfxSwapBuffers();
        gspWaitForVBlank();
    }
    gfxExit();
    return 0;
}

完成