graphics/bitmap/24bit-color/source/main.c

/*
    Hello World example made by Aurelio Mannara for libctru
    This code was modified for the last time on: 12/13/2014 01:00 UTC+1
 
    This wouldn't be possible without the amazing work done by:
    -Smealum
    -fincs
    -WinterMute
    -yellows8
    -plutoo
    -mtheall
    -Many others who worked on 3DS and I'm surely forgetting about
*/
 
#include <3ds.h>
#include <stdio.h>
#include <string.h>
 
//This include a header containing definitions of our image
#include "brew_bgr.h"
 
int main(int argc, char **argv)
{
    gfxInitDefault();
 
    //Initialize console on top screen. Using NULL as the second argument tells the console library to use the internal console structure as current one
    consoleInit(GFX_TOP, NULL);
 
    printf("Why so sad Smealum? We can haz 3DS homebrew!");
 
    printf("\x1b[21;16HPress Start to exit.");
 
    //We don't need double buffering in this example. In this way we can draw our image only once on screen.
    gfxSetDoubleBuffering(GFX_BOTTOM, false);
 
    //Get the bottom screen's frame buffer
    u8* fb = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
 
    //Copy our image in the bottom screen's frame buffer
    memcpy(fb, brew_bgr, brew_bgr_size);
 
    // Main loop
    while (aptMainLoop())
    {
        //Scan all the inputs. This should be done once for each frame
        hidScanInput();
 
        //hidKeysDown returns information about which buttons have been just pressed (and they weren't in the previous frame)
        u32 kDown = hidKeysDown();
 
        if (kDown & KEY_START) break; // break in order to return to hbmenu
 
        // Flush and swap framebuffers
        gfxFlushBuffers();
        gfxSwapBuffers();
 
        //Wait for VBlank
        gspWaitForVBlank();
    }
 
    // Exit services
    gfxExit();
    return 0;
}