ggiDrawPixel, ggiPutPixel, ggiGetPixel - Draw, put, and get a single pixel from a visual
#include <ggi/ggi.h> int ggiDrawPixel(ggi_visual_t vis, int x, int y); int ggiPutPixel(ggi_visual_t vis, int x, int y, ggi_pixel pixel); int ggiGetPixel(ggi_visual_t vis, int x, int y, ggi_pixel *pixel);
Draw, put, or get a single pixelvalue at (x, y).
All three functions return 0 to indicate success.