diff options
Diffstat (limited to 'sys/modules/syscons/fire/fire_saver.c')
-rw-r--r-- | sys/modules/syscons/fire/fire_saver.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/sys/modules/syscons/fire/fire_saver.c b/sys/modules/syscons/fire/fire_saver.c new file mode 100644 index 000000000000..5e2c64353dfd --- /dev/null +++ b/sys/modules/syscons/fire/fire_saver.c @@ -0,0 +1,103 @@ + +/* + * brad forschinger, 19990504 + * <retch@flag.blackened.net> + * + * written with much help from warp_saver.c + * + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/syslog.h> + +#include <machine/md_var.h> +#include <machine/random.h> + +#include <saver.h> + +#define X_SIZE 320 +#define Y_SIZE 200 + +int blanked; +u_char fire_pal[768]; +u_char buf[X_SIZE * (Y_SIZE + 1)]; + +int fire_saver(video_adapter_t *adp, int blank) { + static u_char *vid; + int x, y; + + if (blank) { + if (blanked <= 0) { + int red, green, blue; + int palette_index; + + set_video_mode(adp, M_VGA_CG320); + + /* build palette */ + red = green = blue = 0; + for (palette_index = 0; palette_index < 256; palette_index++) { + + red++; + if (red > 128) + green += 2; + + fire_pal[(palette_index * 3) + 0] = red; + fire_pal[(palette_index * 3) + 1] = green; + fire_pal[(palette_index * 3) + 2] = blue; + } + load_palette(adp, fire_pal); + + blanked++; + vid = (u_char *)adp->va_window; + } + + /* make a new bottom line */ + for (x = 0, y = Y_SIZE; x < X_SIZE; x++) + buf[x + (y * X_SIZE)] = random() % 160 + 96; + + /* fade the flames out */ + for (y = 0; y < Y_SIZE; y++) { + for (x = 0; x < X_SIZE; x++) { + buf[x + (y * X_SIZE)] = (buf[(x + 0) + ((y + 0) * X_SIZE)] + + buf[(x - 1) + ((y + 1) * X_SIZE)] + + buf[(x + 0) + ((y + 1) * X_SIZE)] + + buf[(x + 1) + ((y + 1) * X_SIZE)]) / 4; + if (buf[x + (y * X_SIZE)] > 0) + buf[x + (y * X_SIZE)]--; + } + } + + /* put our buffer into video ram */ + memcpy(vid, buf, X_SIZE * Y_SIZE); + } else { + blanked = 0; + } + + return(0); +} + +int fire_initialise(video_adapter_t *adp) { + video_info_t info; + + if (get_mode_info(adp, M_VGA_CG320, &info)) { + log(LOG_NOTICE, "fire_saver: the console does not support M_VGA_CG320\n"); + return(ENODEV); + } + + blanked = 0; + + return(0); +} + +int fire_terminate(video_adapter_t *adp) { + return(0); +} + +static scrn_saver_t fire_module = { + "fire_saver", fire_initialise, fire_terminate, fire_saver, NULL +}; + +SAVER_MODULE(fire_saver, fire_module); |