void S9xGraphicsMode () { if (text_mode) { screen_width = modes [mode].width; screen_height = modes [mode].height; int ret = vga_setmode (modes [mode].mode); if (ret < 0) { fprintf (stderr, "Unable to switch to requested screen mode/resolution:\n"); S9xExit (); } if (vga_setlinearaddressing () < 0) { if (info->flags & EXT_INFO_AVAILABLE) video_page_size = info->aperture_size; else video_page_size = 64 * 1024; } else video_page_size = ~0; if (modes [mode].mode == G320x200x256 && screen_width == 256) { iopl(3); outRegArray (scr256x256, sizeof (scr256x256) / sizeof (Register)); screen_pitch = screen_width; } gl_setcontextvga (modes [mode].mode); if (keyboard_init ()) { fprintf (stdout, "Keyboard initialisation failed.\n"); S9xExit (); } keyboard_seteventhandler(&_S9xSVGAKeyboardHandler); text_mode = FALSE; if (DeltaScreen) memset (DeltaScreen, 0xff, GFX.Pitch * IMAGE_HEIGHT); } }
void S9xGraphicsMode () { if (in_text_mode) { if (mode < 0) { if (Settings.SixteenBit) { if (Settings.SupportHiRes || interpolate) mode = 10; else mode = 9; } else { if (Settings.SupportHiRes) mode = 3; else mode = 2; } } int ret; do { screen_width = modes [mode].width; screen_height = modes [mode].height; set_color_depth (Settings.SixteenBit ? 16: 8); if (modes [mode].mode == GFX_VGA) ret = set_gfx_mode (modes [mode].mode, 320, 200, 0, 0); else ret = set_gfx_mode (modes [mode].mode, modes [mode].width, modes [mode].height, 0, 0); } while (ret < 0 && ++mode < COUNT(modes)); planar = modes [mode].mode == GFX_MODEX; if (ret < 0) { fprintf (stderr, "Unable to switch to requested screen mode/resolution:\n%s\n", allegro_error); S9xExit (); } if (modes [mode].mode == GFX_VGA && screen_width == 256) { outRegArray (scr256x256, sizeof (scr256x256) / sizeof (Register)); screen->w = screen->cr = 256; screen->h = screen->cb = 256; for (int i = 1; i < 256; i++) screen->line[i] = screen->line[i - 1] + 256; } clear_to_color (screen, 0); if (install_keyboard ()) { set_gfx_mode (GFX_TEXT, 0, 0, 0, 0); fprintf (stdout, "Keyboard initialisation failed.\n"); S9xExit (); } if (!install_mouse ()) { mouse_installed = TRUE; set_mouse_range (0, 0, screen_width, screen_height); position_mouse (screen_width / 2, screen_height / 2); prev_mouse_x = mouse_x; prev_mouse_y = mouse_y; } else mouse_installed = FALSE; in_text_mode = FALSE; } }