ref: 38d26187f451951c9562d32c3c06aa72e6456c28
dir: /Engine/src/display.c/
/*
* An SDL replacement for BUILD's VESA code.
*
* Written by Ryan C. Gordon. (icculus@clutteredmind.org)
*
* Please do NOT harrass Ken Silverman about any code modifications
* (including this file) to BUILD.
*/
/*
* "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
* Ken Silverman's official web site: "http://www.advsys.net/ken"
* See the included license file "BUILDLIC.TXT" for license info.
* This file IS NOT A PART OF Ken Silverman's original release
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#define BUILD_NOMOUSEGRAB "BUILD_NOMOUSEGRAB"
#define BUILD_WINDOWED "BUILD_WINDOWED"
#define BUILD_SDLDEBUG "BUILD_SDLDEBUG"
#define BUILD_RENDERER "BUILD_RENDERER"
#define BUILD_GLLIBRARY "BUILD_GLLIBRARY"
#define BUILD_USERSCREENRES "BUILD_USERSCREENRES"
#define BUILD_MAXSCREENRES "BUILD_MAXSCREENRES"
#define BUILD_HALLOFMIRRORS "BUILD_HALLOFMIRRORS"
#define BUILD_GLDUMP "BUILD_GLDUMP"
#define BUILD_SDLJOYSTICK "BUILD_SDLJOYSTICK"
#include "build.h"
#include "display.h"
#include "fixedPoint_math.h"
#include "engine.h"
#include "sdl_util.h"
#include "icon.h"
#include "draw.h"
#include "cache.h"
/*
* !!! remove the surface_end checks, for speed's sake. They are a
* !!! needed safety right now. --ryan.
*/
#define DEFAULT_MAXRESWIDTH MAXXDIM
#define DEFAULT_MAXRESHEIGHT MAXYDIM
#define UNLOCK_SURFACE_AND_RETURN if (SDL_MUSTLOCK(surface)) SDL_UnlockSurface(surface); return;
/* !!! move these elsewhere? */
int32_t xres, yres, bytesperline, imageSize, maxpages;
uint8_t* frameplace;
//The frambuffer address
uint8_t* frameoffset;
uint8_t *screen, vesachecked;
int32_t buffermode, origbuffermode, linearmode;
uint8_t permanentupdate = 0, vgacompatible;
static SDL_Window* window = NULL;
static SDL_Renderer* renderer = NULL;
static SDL_Texture* texture = NULL;
static SDL_Surface* surface = NULL;
static SDL_Surface* surface_rgba = NULL;
static uint32_t sdl_flags = 0;
static int32_t mouse_relative_x = 0;
static int32_t mouse_relative_y = 0;
static short mouse_buttons = 0;
static unsigned int lastkey = 0;
/* so we can make use of setcolor16()... - DDOI */
static uint8_t drawpixel_color=0;
static uint32_t scancodes[SDL_NUM_SCANCODES];
static int32_t last_render_ticks = 0;
int32_t total_render_time = 1;
int32_t total_rendered_frames = 0;
static char *titleName = NULL;
#define print_tf_state(str, val) printf("%s: {%s}\n", str, (val) ? "true" : "false" )
void* get_framebuffer(void)
{
return surface->pixels;
}
/*
* !!! This is almost an entire copy of the original setgamemode().
* !!! Figure out what is needed for just 2D mode, and separate that
* !!! out. Then, place the original setgamemode() back into engine.c,
* !!! and remove our simple implementation (and this function.)
* !!! Just be sure to keep the non-DOS things, like the window's
* !!! titlebar caption. --ryan.
*/
static uint8_t screenalloctype = 255;
static void init_new_res_vars()
{
int i = 0;
int j = 0;
setupmouse();
xdim = xres = surface->w;
ydim = yres = surface->h;
printf("init_new_res_vars %d %d\n", xdim, ydim);
numpages = 1; // we always expose the same surface to the drawing engine.
bytesperline = surface->w;
vesachecked = 1;
vgacompatible = 1;
linearmode = 1;
qsetmode = surface->h;
activepage = visualpage = 0;
frameoffset = frameplace = (uint8_t*)surface->pixels;
if (screen != NULL)
{
if (screenalloctype == 0) free((void*)screen);
if (screenalloctype == 1) suckcache((int32_t*)screen);
screen = NULL;
} /* if */
switch (vidoption)
{
case 1:i = xdim * ydim; break;
case 2: xdim = 320; ydim = 200; i = xdim * ydim; break;
default: assert(0);
}
j = ydim * 4 * sizeof(int32_t); /* Leave room for horizlookup&horizlookup2 */
if (horizlookup)
free(horizlookup);
if (horizlookup2)
free(horizlookup2);
horizlookup = (int32_t*)malloc(j);
horizlookup2 = (int32_t*)malloc(j);
j = 0;
//Build lookup table (X screespace -> frambuffer offset.
for (i = 0; i <= ydim; i++)
{
ylookup[i] = j;
j += bytesperline;
}
horizycent = ((ydim * 4) >> 1);
/* Force drawrooms to call dosetaspect & recalculate stuff */
oxyaspect = oxdimen = oviewingrange = -1;
//Let the Assembly module how many pixels to skip when drawing a column
setBytesPerLine(bytesperline);
setview(0L, 0L, xdim - 1, ydim - 1);
setbrightness(curbrightness, palette);
if (searchx < 0) {
searchx = halfxdimen;
searchy = (ydimen >> 1);
}
}
static void go_to_new_vid_mode(int w, int h)
{
if (window != NULL)
{
SDL_FreeSurface(surface_rgba);
SDL_FreeSurface(surface);
SDL_DestroyTexture(texture);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_QuitSubSystem(SDL_INIT_VIDEO);
window = NULL;
}
SDL_CHECK_SUCCESS( SDL_InitSubSystem(SDL_INIT_VIDEO) );
window = SDL_CreateWindow(
titleName,
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
w, h,
sdl_flags | SDL_WINDOW_ALLOW_HIGHDPI);
SDL_CHECK_NOT_NULL(window, "create window");
// don't override higher-res app icon on OS X or Windows
#if !PLATFORM_MACOSX && !WIN32
SDL_Surface* image = SDL_LoadBMP_RW(SDL_RWFromMem(iconBMP, sizeof(iconBMP)), 1);
Uint32 colorkey = 0; // index in this image to be transparent
SDL_SetColorKey(image, SDL_TRUE, colorkey);
SDL_SetWindowIcon(window, image);
SDL_FreeSurface(image);
#endif
getvalidvesamodes();
SDL_ClearError();
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
SDL_CHECK_NOT_NULL(renderer, "create renderer");
SDL_RendererInfo rendererInfo;
SDL_CHECK_SUCCESS(SDL_GetRendererInfo(renderer, &rendererInfo));
printf("SDL Renderer: '%s'.\n", rendererInfo.name);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
//SDL_SetHint(SDL_HINT_RENDER_VSYNC, "1");
SDL_CHECK_SUCCESS(SDL_RenderSetLogicalSize(renderer, w, h));
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, w, h);
SDL_CHECK_NOT_NULL(texture, "create texture");
surface = SDL_CreateRGBSurface(0, w, h, 8, 0, 0, 0, 0);
SDL_CHECK_NOT_NULL(surface, "create palettized surface");
const Uint32 rmask = 0x00ff0000;
const Uint32 gmask = 0x0000ff00;
const Uint32 bmask = 0x000000ff;
const Uint32 amask = 0xff000000;
surface_rgba = SDL_CreateRGBSurface(0, w, h, 32, rmask, gmask, bmask, amask);
SDL_CHECK_NOT_NULL(surface_rgba, "create RGBA surface");
init_new_res_vars();
}
static void present_framebuffer(void)
{
SDL_CHECK_SUCCESS(SDL_BlitSurface(surface, NULL, surface_rgba, NULL));
SDL_CHECK_SUCCESS(SDL_UpdateTexture(texture, NULL, surface_rgba->pixels, surface_rgba->pitch));
SDL_CHECK_SUCCESS(SDL_RenderClear(renderer));
SDL_CHECK_SUCCESS(SDL_RenderCopy(renderer, texture, NULL, NULL));
SDL_RenderPresent(renderer);
}
static inline int sdl_mouse_button_filter(SDL_MouseButtonEvent const *event)
{
/*
* What bits BUILD expects:
* 0 left button pressed if 1
* 1 right button pressed if 1
* 2 middle button pressed if 1
*
* (That is, this is what Int 33h (AX=0x05) returns...)
*
* additionally bits 3&4 are set for the mouse wheel
*/
Uint8 button = event->button;
if (button >= sizeof (mouse_buttons) * 8)
return(0);
if (button == SDL_BUTTON_RIGHT)
button = SDL_BUTTON_MIDDLE;
else if (button == SDL_BUTTON_MIDDLE)
button = SDL_BUTTON_RIGHT;
if (((const SDL_MouseButtonEvent*)event)->state)
mouse_buttons |= 1<<(button-1);
else if (button != 4 && button != 5)
mouse_buttons ^= 1<<(button-1);
#if 0
Uint8 bmask = SDL_GetMouseState(NULL, NULL);
mouse_buttons = 0;
if (bmask & SDL_BUTTON_LMASK) mouse_buttons |= 1;
if (bmask & SDL_BUTTON_RMASK) mouse_buttons |= 2;
if (bmask & SDL_BUTTON_MMASK) mouse_buttons |= 4;
#endif
return(0);
} /* sdl_mouse_up_filter */
static int sdl_mouse_motion_filter(SDL_Event const *event)
{
if (surface == NULL)
return(0);
if (event->type == SDL_JOYBALLMOTION)
{
mouse_relative_x = event->jball.xrel/100;
mouse_relative_y = event->jball.yrel/100;
}
else
{
if (SDL_GetRelativeMouseMode() == SDL_TRUE)
{
mouse_relative_x += event->motion.xrel;
mouse_relative_y += event->motion.yrel;
//printf("sdl_mouse_motion_filter: mrx=%d, mry=%d, mx=%d, my=%d\n",
// mouse_relative_x, mouse_relative_y, event->motion.xrel, event->motion.yrel);
// mouse_relative_* is already reset in
// readmousexy(). It must not be
// reset here because calling this function does not mean
// we always handle the mouse.
// FIX_00001: Mouse speed is uneven and slower in windowed mode vs fullscreen mode.
}
else
mouse_relative_x = mouse_relative_y = 0;
}
return(0);
} /* sdl_mouse_motion_filter */
/*
* The windib driver can't alert us to the keypad enter key, which
* Ken's code depends on heavily. It sends it as the same key as the
* regular return key. These users will have to hit SHIFT-ENTER,
* which we check for explicitly, and give the engine a keypad enter
* enter event.
*/
static inline int handle_keypad_enter_hack(const SDL_Event *event)
{
static int kp_enter_hack = 0;
int retval = 0;
if (event->key.keysym.sym == SDLK_RETURN)
{
if (event->key.state == SDL_PRESSED)
{
if (event->key.keysym.mod & KMOD_SHIFT)
{
kp_enter_hack = 1;
lastkey = SDL_SCANCODE_KP_ENTER;
retval = 1;
} /* if */
} /* if */
else /* key released */
{
if (kp_enter_hack)
{
kp_enter_hack = 0;
lastkey = SDL_SCANCODE_KP_ENTER;
retval = 1;
} /* if */
} /* if */
} /* if */
return(retval);
} /* handle_keypad_enter_hack */
void fullscreen_toggle_and_change_driver(void)
{
// FIX_00002: New Toggle Windowed/FullScreen system now simpler and will
// dynamically change for Windib or Directx driver. Windowed/Fullscreen
// toggle also made available from menu.
// Replace attempt_fullscreen_toggle(SDL_Surface **surface, Uint32 *flags)
int32_t x,y;
x = surface->w;
y = surface->h;
BFullScreen =!BFullScreen;
_platform_init(0, NULL, "Duke Nukem 3D", "Duke3D");
_setgamemode(x,y);
//vscrn();
return;
}
static int sdl_key_filter(const SDL_Event *event)
{
int extended;
if ( (event->key.keysym.sym == SDLK_m) &&
(event->key.state == SDL_PRESSED) &&
(event->key.keysym.mod & KMOD_CTRL) )
{
// FIX_00005: Mouse pointer can be toggled on/off (see mouse menu or use CTRL-M)
// This is usefull to move the duke window when playing in window mode.
if (SDL_GetRelativeMouseMode() == SDL_TRUE)
{
SDL_CHECK_SUCCESS( SDL_SetRelativeMouseMode(SDL_FALSE) );
}
else
{
SDL_CHECK_SUCCESS( SDL_SetRelativeMouseMode(SDL_TRUE) );
}
return(0);
}
if (((event->key.keysym.sym == SDLK_RETURN) ||
(event->key.keysym.sym == SDLK_KP_ENTER)) &&
(event->key.state == SDL_PRESSED) &&
(event->key.keysym.mod & KMOD_ALT))
{
fullscreen_toggle_and_change_driver();
// hack to discard the ALT key...
lastkey = scancodes[SDL_SCANCODE_RALT] >> 8; // extended
keyhandler();
lastkey = (scancodes[SDL_SCANCODE_RALT] & 0xff) + 0x80; // Simulating Key up
keyhandler();
lastkey = (scancodes[SDL_SCANCODE_LALT] & 0xff) + 0x80; // Simulating Key up (not extended)
keyhandler();
SDL_SetModState(KMOD_NONE); // SDL doesnt see we are releasing the ALT-ENTER keys
return(0);
}
if (!handle_keypad_enter_hack(event))
lastkey = scancodes[event->key.keysym.scancode];
// printf("key.keysym.sym=%d\n", event->key.keysym.sym);
if (lastkey == 0x0000) /* No DOS equivalent defined. */
return(0);
extended = ((lastkey & 0xFF00) >> 8);
if (extended != 0)
{
lastkey = extended;
keyhandler();
lastkey = (scancodes[event->key.keysym.scancode] & 0xFF);
} /* if */
if (event->key.state == SDL_RELEASED)
lastkey += 128; /* +128 signifies that the key is released in DOS. */
keyhandler();
return(0);
} /* sdl_key_filter */
static int root_sdl_event_filter(const SDL_Event *event)
{
switch (event->type)
{
case SDL_KEYUP:
// FIX_00003: Pause mode is now fully responsive - (Thx to Jonathon Fowler tips)
if(event->key.keysym.sym == SDLK_PAUSE)
break;
case SDL_KEYDOWN:
return(sdl_key_filter(event));
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
{
//Do Nothing
//printf("Joybutton UP/DOWN\n");
//return(sdl_joystick_button_filter((const SDL_MouseButtonEvent*)event));
return 0;
}
case SDL_JOYBALLMOTION:
case SDL_MOUSEMOTION:
return(sdl_mouse_motion_filter(event));
case SDL_MOUSEBUTTONUP:
case SDL_MOUSEBUTTONDOWN:
return(sdl_mouse_button_filter((const SDL_MouseButtonEvent*)event));
case SDL_QUIT:
/* !!! rcg TEMP */
Error(EXIT_SUCCESS, "Exit through SDL\n");
default:
//printf("This event is not handled: %d\n",event->type);
break;
} /* switch */
return(1);
} /* root_sdl_event_filter */
static void handle_events(void)
{
SDL_Event event;
while(SDL_PollEvent(&event))
root_sdl_event_filter(&event);
} /* handle_events */
/* bleh...public version... */
void _handle_events(void)
{
handle_events();
} /* _handle_events */
static SDL_Joystick *joystick = NULL;
void _joystick_init(void)
{
const char *envr = getenv(BUILD_SDLJOYSTICK);
int favored = 0;
int numsticks;
int i;
if (joystick != NULL)
{
printf("Joystick appears to be already initialized.\n");
printf("...deinitializing for stick redetection...\n");
_joystick_deinit();
} /* if */
if ((envr != NULL) && (strcmp(envr, "none") == 0))
{
printf("Skipping joystick detection/initialization at user request\n");
return;
} /* if */
printf("Initializing SDL joystick subsystem...");
printf(" (export environment variable BUILD_SDLJOYSTICK=none to skip)\n");
if (SDL_Init(SDL_INIT_JOYSTICK|SDL_INIT_NOPARACHUTE) != 0)
{
printf("SDL_Init(SDL_INIT_JOYSTICK) failed: [%s].\n", SDL_GetError());
return;
} /* if */
numsticks = SDL_NumJoysticks();
printf("SDL sees %d joystick%s.\n", numsticks, numsticks == 1 ? "" : "s");
if (numsticks == 0)
return;
for (i = 0; i < numsticks; i++)
{
joystick = SDL_JoystickOpen(i);
if (joystick == NULL)
{
printf("Joystick #%d failed to init: %s\n", i, SDL_GetError());
return;
}
const char *stickname = SDL_JoystickName(joystick);
if ((envr != NULL) && (strcmp(envr, stickname) == 0))
favored = i;
printf("Stick #%d: [%s]\n", i, stickname);
SDL_JoystickClose(joystick);
} /* for */
printf("Using Stick #%d.", favored);
if ((envr == NULL) && (numsticks > 1))
printf("Set BUILD_SDLJOYSTICK to one of the above names to change.\n");
joystick = SDL_JoystickOpen(favored);
if (joystick == NULL)
{
printf("Joystick #%d failed to init: %s\n", favored, SDL_GetError());
return;
} /* if */
printf("Joystick initialized. %d axes, %d buttons, %d hats, %d balls.\n",
SDL_JoystickNumAxes(joystick), SDL_JoystickNumButtons(joystick),
SDL_JoystickNumHats(joystick), SDL_JoystickNumBalls(joystick));
SDL_JoystickEventState(SDL_QUERY);
} /* _joystick_init */
void _joystick_deinit(void)
{
if (joystick != NULL)
{
printf("Closing joystick device...\n");
SDL_JoystickClose(joystick);
printf("Joystick device closed. Deinitializing SDL subsystem...\n");
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
printf("SDL joystick subsystem deinitialized.\n");
joystick = NULL;
} /* if */
} /* _joystick_deinit */
int _joystick_update(void)
{
if (joystick == NULL)
return(0);
SDL_JoystickUpdate();
return(1);
} /* _joystick_update */
int _joystick_axis(int axis)
{
if (joystick == NULL)
{
return(0);
}
return(SDL_JoystickGetAxis(joystick, axis));
} /* _joystick_axis */
int _joystick_hat(int hat)
{
if (joystick == NULL)
{
return(-1);
}
return(SDL_JoystickGetHat(joystick, hat));
} /* _joystick_axis */
int _joystick_button(int button)
{
if (joystick == NULL)
return(0);
return(SDL_JoystickGetButton(joystick, button) != 0);
} /* _joystick_button */
uint8_t _readlastkeyhit(void)
{
return(lastkey);
} /* _readlastkeyhit */
#if (!defined __DATE__)
#define __DATE__ "a long, int32_t time ago"
#endif
static void output_sdl_versions(void)
{
SDL_version linked_ver;
SDL_GetVersion(&linked_ver);
SDL_version compiled_ver;
SDL_VERSION(&compiled_ver);
printf("SDL Display driver for the BUILD engine initializing.\n");
printf("SDL Compiled %s against SDL version %d.%d.%d ...\n", __DATE__, compiled_ver.major, compiled_ver.minor, compiled_ver.patch);
printf("SDL Linked against SDL version %d.%d.%d ...\n", linked_ver.major, linked_ver.minor, linked_ver.patch);
}
/* lousy -ansi flag. :) */
static char *string_dupe(const char *str)
{
char *retval = malloc(strlen(str) + 1);
if (retval != NULL)
strcpy(retval, str);
return(retval);
}
void _platform_init(int argc, char **argv, const char *title, const char *iconName)
{
int64_t timeElapsed;
// FIX_00061: "ERROR: Two players have the same random ID" too frequent cuz of internet windows times
timeElapsed = SDL_GetTicks();
srand(timeElapsed&0xFFFFFFFF);
SDL_CHECK_SUCCESS( SDL_Init(SDL_INIT_VIDEO) );
if (title == NULL)
title = "BUILD";
titleName = string_dupe(title);
sdl_flags = BFullScreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0;
set_sdl_scancodes(scancodes, sizeof(scancodes) / sizeof(scancodes[0]));
output_sdl_versions();
printf("SDL Video Driver: '%s'.\n", SDL_GetCurrentVideoDriver());
}
// Capture BMP of the current frame
void screencapture(char *filename)
{
// FIX_00006: better naming system for screenshots + message when pic is taken.
// Use ./screenshots folder. Screenshot code rerwritten. Faster and
// makes smaller files. Doesn't freeze or lag the game anymore.
if (SDL_SaveBMP(surface, filename))
{
printf("SDL failed to save screenshot '%s' (%s)\n", filename, SDL_GetError());
}
}
void setvmode(int mode)
{
if (mode == 0x3) /* text mode. */
{
SDL_QuitSubSystem(SDL_INIT_VIDEO);
return;
} else
printf("setvmode(0x%x) is unsupported in SDL driver.\n", mode);
}
int _setgamemode(int32_t daxdim, int32_t daydim)
{
int validated, i;
if (daxdim > MAXXDIM || daydim > MAXYDIM)
{
printf("Resolution %dx%d is too high. Changed to %dx%d\n", daxdim, daydim, MAXXDIM,MAXYDIM);
daxdim = MAXXDIM;
daydim = MAXYDIM;
}
getvalidvesamodes();
validated = 0;
for(i=0; i<validmodecnt; i++){
if(validmodexdim[i] == daxdim && validmodeydim[i] == daydim)
validated = 1;
}
if(!validated){
printf("Resolution %dx%d unsupported. Changed to 640x480\n", daxdim, daydim);
daxdim = 640;
daydim = 480;
}
go_to_new_vid_mode(daxdim, daydim);
qsetmode = 200;
last_render_ticks = getticks();
return(0);
} /* setgamemode */
static int get_dimensions_from_str(const char *str, int32_t *_w, int32_t *_h)
{
char *xptr = NULL;
char *ptr = NULL;
int32_t w = -1;
int32_t h = -1;
if (str == NULL)
return(0);
xptr = strchr(str, 'x');
if (xptr == NULL)
return(0);
w = strtol(str, &ptr, 10);
if (ptr != xptr)
return(0);
xptr++;
h = strtol(xptr, &ptr, 10);
if ( (*xptr == '\0') || (*ptr != '\0') )
return(0);
if ((w <= 1) || (h <= 1))
return(0);
if (_w != NULL)
*_w = w;
if (_h != NULL)
*_h = h;
return(1);
} /* get_dimensions_from_str */
static inline void get_max_screen_res(int32_t *max_w, int32_t *max_h)
{
int32_t w = DEFAULT_MAXRESWIDTH;
int32_t h = DEFAULT_MAXRESHEIGHT;
const char *envr = getenv(BUILD_MAXSCREENRES);
if (envr != NULL)
{
if (!get_dimensions_from_str(envr, &w, &h))
{
printf("User's resolution ceiling [%s] is bogus!\n", envr);
w = DEFAULT_MAXRESWIDTH;
h = DEFAULT_MAXRESHEIGHT;
} /* if */
} /* if */
if (max_w != NULL)
*max_w = w;
if (max_h != NULL)
*max_h = h;
}
static void add_vesa_mode(int w, int h)
{
validmode[validmodecnt] = validmodecnt;
validmodexdim[validmodecnt] = w;
validmodeydim[validmodecnt] = h;
validmodecnt++;
}
/* Let the user specify a specific mode via environment variable. */
static inline void add_user_defined_resolution(void)
{
int32_t w;
int32_t h;
const char *envr = getenv(BUILD_USERSCREENRES);
if (envr == NULL)
return;
if (get_dimensions_from_str(envr, &w, &h))
add_vesa_mode(w, h);
else
printf("User defined resolution [%s] is bogus!\n", envr);
} /* add_user_defined_resolution */
static void remove_vesa_mode(int index, const char *reason)
{
int i;
assert(index < validmodecnt);
//printf("Removing resolution #%d, %dx%d [%s].\n",index, validmodexdim[index], validmodeydim[index], reason);
for (i = index; i < validmodecnt - 1; i++)
{
validmode[i] = validmode[i + 1];
validmodexdim[i] = validmodexdim[i + 1];
validmodeydim[i] = validmodeydim[i + 1];
} /* for */
validmodecnt--;
} /* remove_vesa_mode */
static inline void cull_large_vesa_modes(void)
{
int32_t max_w;
int32_t max_h;
int i;
get_max_screen_res(&max_w, &max_h);
printf("Setting resolution ceiling to (%dx%d).\n", max_w, max_h);
for (i = 0; i < validmodecnt; i++)
{
if ((validmodexdim[i] > max_w) || (validmodeydim[i] > max_h))
{
remove_vesa_mode(i, "above resolution ceiling");
i--; /* list shrinks. */
} /* if */
} /* for */
} /* cull_large_vesa_modes */
static inline void cull_duplicate_vesa_modes(void)
{
int i;
int j;
for (i = 0; i < validmodecnt; i++){
for (j = i + 1; j < validmodecnt; j++){
if ( (validmodexdim[i] == validmodexdim[j]) &&(validmodeydim[i] == validmodeydim[j]) ){
remove_vesa_mode(j, "duplicate");
j--; /* list shrinks. */
}
}
}
}
#define swap_macro(tmp, x, y) { tmp = x; x = y; y = tmp; }
/* be sure to call cull_duplicate_vesa_modes() before calling this. */
static inline void sort_vesa_modelist(void)
{
int i;
int sorted;
int32_t tmp;
do
{
sorted = 1;
for (i = 0; i < validmodecnt - 1; i++)
{
if ( (validmodexdim[i] >= validmodexdim[i+1]) &&
(validmodeydim[i] >= validmodeydim[i+1]) )
{
sorted = 0;
swap_macro(tmp, validmode[i], validmode[i+1]);
swap_macro(tmp, validmodexdim[i], validmodexdim[i+1]);
swap_macro(tmp, validmodeydim[i], validmodeydim[i+1]);
} /* if */
} /* for */
} while (!sorted);
} /* sort_vesa_modelist */
static inline void cleanup_vesa_modelist(void)
{
cull_large_vesa_modes();
cull_duplicate_vesa_modes();
sort_vesa_modelist();
} /* cleanup_vesa_modelist */
static inline void output_vesa_modelist(void)
{
char buffer[512];
char numbuf[20];
int i;
buffer[0] = '\0';
for (i = 0; i < validmodecnt; i++)
{
sprintf(numbuf, " (%dx%d)",(int32_t) validmodexdim[i], (int32_t) validmodeydim[i]);
if ( (strlen(buffer) + strlen(numbuf)) >= (sizeof (buffer) - 1) )
strcpy(buffer + (sizeof (buffer) - 5), " ...");
else
strcat(buffer, numbuf);
} /* for */
printf("Final sorted modelist:%s\n", buffer);
}
void getvalidvesamodes(void)
{
static int already_checked = 0;
int i;
int stdres[][2] = {
{320, 240},
{640, 480},
{800, 600},
{1024, 768},
{1280, 960},
{1440, 1080},
{1600, 1200},
{1920, 1440},
{2560, 1920},
{2880, 2160}
};
if (already_checked)
return;
already_checked = 1;
validmodecnt = 0;
vidoption = 1; /* !!! tmp */
// Fill in the standard 4:3 resolutions that the display supports
int numModes = SDL_GetNumDisplayModes(0);
int maxWidth = 0;
int maxHeight = 0;
for (i = 0; i < numModes; ++i)
{
SDL_DisplayMode mode;
SDL_CHECK_SUCCESS(SDL_GetDisplayMode(0, i, &mode));
maxWidth = max(maxWidth, mode.w);
maxHeight = max(maxHeight, mode.h);
}
for (i = 0; i < sizeof(stdres) / sizeof(stdres[0]); i++)
{
assert(stdres[i][0] / 4 == stdres[i][1] / 3);
if (stdres[i][0] <= maxWidth && stdres[i][1] <= maxHeight)
{
add_vesa_mode(stdres[i][0], stdres[i][1]);
}
}
/* Now add specific resolutions that the user wants... */
add_user_defined_resolution();
/* get rid of dupes and bogus resolutions... */
cleanup_vesa_modelist();
/* print it out for debugging purposes... */
output_vesa_modelist();
}
uint8_t lastPalette[768];
void WriteTranslucToFile(void)
{
uint8_t buffer[65535*4];
uint8_t tga_header[18];
uint8_t* transPointer = transluc;
uint8_t* bufferPointer = buffer;
int i;
FILE* file;
for (i=0; i < 65535; i++) {
bufferPointer[0] = (lastPalette[(*transPointer)*3+0]) / 63.0 * 255;
bufferPointer[1] = (lastPalette[(*transPointer)*3+1]) / 63.0 * 255;
bufferPointer[2] = (lastPalette[(*transPointer)*3+2]) / 63.0 * 255;
bufferPointer[3] = 255;
printf("%d,",*transPointer);
if (i%255 ==0)
printf("\n");
transPointer +=1;
bufferPointer+=4;
}
file = fopen("transluc.tga", "w");
memset(tga_header, 0, 18);
tga_header[2] = 2;
tga_header[12] = (256 & 0x00FF);
tga_header[13] = (256 & 0xFF00) / 256;
tga_header[14] = (256 & 0x00FF) ;
tga_header[15] =(256 & 0xFF00) / 256;
tga_header[16] = 32 ;
fwrite(&tga_header, 18, sizeof(uint8_t), file);
fwrite(buffer, 65535, 4, file);
fclose(file);
}
void WritePaletteToFile(uint8_t* palette,const char* filename,int width, int height)
{
uint8_t tga_header[18];
uint8_t* buffer;
uint8_t* palettePointer = palette;
uint8_t* bufferPointer ;
int i;
FILE* file = fopen(filename, "w");
memset(tga_header, 0, 18);
tga_header[2] = 2;
tga_header[12] = (width & 0x00FF);
tga_header[13] = (width & 0xFF00) / 256;
tga_header[14] = (height & 0x00FF) ;
tga_header[15] =(height & 0xFF00) / 256;
tga_header[16] = 32 ;
fwrite(&tga_header, 18, sizeof(uint8_t), file);
bufferPointer = buffer = malloc(width*height*4);
for (i = 0 ; i < width*height ; i++)
{
bufferPointer[0] = palettePointer[0] / 63.0 * 255;
bufferPointer[1] = palettePointer[1] / 63.0 * 255;
bufferPointer[2] = palettePointer[2] / 63.0 * 255;
bufferPointer[3] = 255;
bufferPointer += 4;
palettePointer+= 3;
}
fwrite(buffer, width*height, 4, file);
fclose(file);
free(buffer);
}
void WriteLastPaletteToFile()
{
WritePaletteToFile(lastPalette,"lastPalette.tga",16,16);
}
void VBE_getPalette(int32_t start, int32_t num, uint8_t* palettebuffer)
{
SDL_Color* sdlp = surface->format->palette->colors + start;
uint8_t* p = palettebuffer + (start * 4);
int i;
for (i = 0; i < num; i++)
{
*p++ = (Uint8)((((float)sdlp->b) / 255.0) * 63.0);
*p++ = (Uint8)((((float)sdlp->g) / 255.0) * 63.0);
*p++ = (Uint8)((((float)sdlp->r) / 255.0) * 63.0);
*p++ = sdlp->a; /* This byte is unused in both SDL and BUILD. */
sdlp++;
}
}
void VBE_setPalette(uint8_t *palettebuffer)
/*
* (From Ken's docs:)
* Set (num) palette palette entries starting at (start)
* palette entries are in a 4-byte format in this order:
* 0: Blue (0-63)
* 1: Green (0-63)
* 2: Red (0-63)
* 3: Reserved
*
* Naturally, the bytes are in the reverse order that SDL wants them...
* More importantly, SDL wants the color elements in a range from 0-255,
* so we do a conversion.
*/
{
SDL_Color fmt_swap[256];
SDL_Color *sdlp = fmt_swap;
uint8_t *p = palettebuffer;
int i;
//static updated=0;
//if (updated >=1 )
// return ;
//WritePaletteToFile(palettebuffer,"lastPalette.tga",16,16);
//updated++;
//CODE EXPLORATION
//Used only to write the last palette to file.
memcpy(lastPalette, palettebuffer, 768);
for (i = 0; i < 256; i++){
sdlp->b = (Uint8) ((((float) *p++) / 63.0) * 255.0);
sdlp->g = (Uint8) ((((float) *p++) / 63.0) * 255.0);
sdlp->r = (Uint8) ((((float) *p++) / 63.0) * 255.0);
sdlp->a = *p++; /* This byte is unused in BUILD, too. */
sdlp++;
}
SDL_CHECK_SUCCESS( SDL_SetPaletteColors(surface->format->palette, fmt_swap, 0, 256) );
}
void VBE_presentPalette()
{
// tanguyf: updating the palette is not immediate with a buffered surface, screen needs updating as well.
// Call this function if nextpage() is not called. E.g. static intro logo.
present_framebuffer();
}
void _uninitengine(void)
{
SDL_QuitSubSystem(SDL_INIT_VIDEO);
} /* _uninitengine */
int setupmouse(void)
{
SDL_Event event;
if (surface == NULL)
return(0);
SDL_CHECK_SUCCESS( SDL_SetRelativeMouseMode(SDL_TRUE) );
mouse_relative_x = mouse_relative_y = 0;
/*
* this global usually gets set by BUILD, but it's a one-shot
* deal, and we may not have an SDL surface at that point. --ryan.
*/
moustat = 1;
// FIX_00063: Duke's angle changing or incorrect when using toggle fullscreen/window mode
while(SDL_PollEvent(&event)); // Empying the various pending events (especially the mouse one)
//SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
return(1);
} /* setupmouse */
void readmousexy(short *x, short *y)
{
if (x)
*x = mouse_relative_x << 2;
if (y)
*y = mouse_relative_y << 2;
mouse_relative_x = mouse_relative_y = 0;
} /* readmousexy */
void readmousebstatus(short *bstatus)
{
if (bstatus)
*bstatus = mouse_buttons;
// special wheel treatment: make it like a button click
if(mouse_buttons&8)
mouse_buttons ^= 8;
if(mouse_buttons&16)
mouse_buttons ^= 16;
} /* readmousebstatus */
void _updateScreenRect(int32_t x, int32_t y, int32_t w, int32_t h)
{
SDL_Rect rect = { x, y, w, h };
SDL_CHECK_SUCCESS(SDL_BlitSurface(surface, &rect, surface_rgba, &rect));
SDL_CHECK_SUCCESS(SDL_UpdateTexture(texture, &rect, surface_rgba->pixels, surface_rgba->pitch));
SDL_CHECK_SUCCESS(SDL_RenderCopy(renderer, texture, &rect, &rect));
SDL_RenderPresent(renderer);
}
//int counter= 0 ;
//char bmpName[256];
void _nextpage(void)
{
Uint32 ticks;
_handle_events();
present_framebuffer();
//sprintf(bmpName,"%d.bmp",counter++);
//SDL_SaveBMP(surface,bmpName);
//if (CLEAR_FRAMEBUFFER)
// SDL_FillRect(surface,NULL,0);
ticks = getticks();
total_render_time = (ticks - last_render_ticks);
if (total_render_time > 1000){
total_rendered_frames = 0;
total_render_time = 1;
last_render_ticks = ticks;
}
total_rendered_frames++;
}
uint8_t readpixel(uint8_t* offset)
{
return *offset;
}
void drawpixel(uint8_t* location, uint8_t pixel)
{
*location = pixel;
}
/* Fix this up The Right Way (TM) - DDOI */
void setcolor16(uint8_t col)
{
drawpixel_color = col;
}
void drawpixel16(int32_t offset)
{
drawpixel((uint8_t*)surface->pixels + offset, drawpixel_color);
} /* drawpixel16 */
void fillscreen16(int32_t offset, int32_t color, int32_t blocksize)
{
Uint8 *surface_end;
Uint8 *wanted_end;
Uint8 *pixels;
if (SDL_MUSTLOCK(surface))
SDL_LockSurface(surface);
pixels = get_framebuffer();
/* Make this function pageoffset aware - DDOI */
if (!pageoffset) {
offset = offset << 3;
offset += 640*336;
}
surface_end = (pixels + (surface->w * surface->h)) - 1;
wanted_end = (pixels + offset) + blocksize;
if (offset < 0)
offset = 0;
if (wanted_end > surface_end)
blocksize = surface_end - (pixels + offset);
memset(pixels + offset, (int) color, blocksize);
if (SDL_MUSTLOCK(surface))
SDL_UnlockSurface(surface);
_nextpage();
} /* fillscreen16 */
/* Most of this line code is taken from Abrash's "Graphics Programming Blackbook".
Remember, sharing code is A Good Thing. AH */
static inline void DrawHorizontalRun (uint8_t **ScreenPtr, int XAdvance, int RunLength, uint8_t Color)
{
int i;
uint8_t *WorkingScreenPtr = *ScreenPtr;
for (i=0; i<RunLength; i++)
{
*WorkingScreenPtr = Color;
WorkingScreenPtr += XAdvance;
}
WorkingScreenPtr += surface->w;
*ScreenPtr = WorkingScreenPtr;
}
static inline void DrawVerticalRun (uint8_t **ScreenPtr, int XAdvance, int RunLength, uint8_t Color)
{
int i;
uint8_t *WorkingScreenPtr = *ScreenPtr;
for (i=0; i<RunLength; i++)
{
*WorkingScreenPtr = Color;
WorkingScreenPtr += surface->w;
}
WorkingScreenPtr += XAdvance;
*ScreenPtr = WorkingScreenPtr;
}
void drawline16(int32_t XStart, int32_t YStart, int32_t XEnd, int32_t YEnd, uint8_t Color)
{
int Temp, AdjUp, AdjDown, ErrorTerm, XAdvance, XDelta, YDelta;
int WholeStep, InitialPixelCount, FinalPixelCount, i, RunLength;
uint8_t *ScreenPtr;
int32_t dx, dy;
if (SDL_MUSTLOCK(surface))
SDL_LockSurface(surface);
dx = XEnd-XStart;
dy = YEnd-YStart;
//Analyse the slope
if (dx >= 0)
{
if ((XStart > 639) || (XEnd < 0)) return;
if (XStart < 0) { if (dy) YStart += scale(0-XStart,dy,dx); XStart = 0; }
if (XEnd > 639) { if (dy) YEnd += scale(639-XEnd,dy,dx); XEnd = 639; }
}
else
{
if ((XEnd > 639) || (XStart < 0)) return;
if (XEnd < 0) { if (dy) YEnd += scale(0-XEnd,dy,dx); XEnd = 0; }
if (XStart > 639) { if (dy) YStart += scale(639-XStart,dy,dx); XStart = 639; }
}
if (dy >= 0)
{
if ((YStart >= ydim16) || (YEnd < 0)) return;
if (YStart < 0) { if (dx) XStart += scale(0-YStart,dx,dy); YStart = 0; }
if (YEnd >= ydim16) { if (dx) XEnd += scale(ydim16-1-YEnd,dx,dy); YEnd = ydim16-1; }
}
else
{
if ((YEnd >= ydim16) || (YStart < 0)) return;
if (YEnd < 0) { if (dx) XEnd += scale(0-YEnd,dx,dy); YEnd = 0; }
if (YStart >= ydim16) { if (dx) XStart += scale(ydim16-1-YStart,dx,dy); YStart = ydim16-1; }
}
/* Make sure the status bar border draws correctly - DDOI */
if (!pageoffset) { YStart += 336; YEnd += 336; }
/* We'll always draw top to bottom */
if (YStart > YEnd) {
Temp = YStart;
YStart = YEnd;
YEnd = Temp;
Temp = XStart;
XStart = XEnd;
XEnd = Temp;
}
/* Point to the bitmap address first pixel to draw */
ScreenPtr = (uint8_t *) (get_framebuffer()) + XStart + (surface->w * YStart);
/* Figure out whether we're going left or right, and how far we're going horizontally */
if ((XDelta = XEnd - XStart) < 0)
{
XAdvance = (-1);
XDelta = -XDelta;
} else {
XAdvance = 1;
}
/* Figure out how far we're going vertically */
YDelta = YEnd - YStart;
/* Special cases: Horizontal, vertical, and diagonal lines */
if (XDelta == 0)
{
for (i=0; i <= YDelta; i++)
{
*ScreenPtr = Color;
ScreenPtr += surface->w;
}
UNLOCK_SURFACE_AND_RETURN;
}
if (YDelta == 0)
{
for (i=0; i <= XDelta; i++)
{
*ScreenPtr = Color;
ScreenPtr += XAdvance;
}
UNLOCK_SURFACE_AND_RETURN;
}
if (XDelta == YDelta)
{
for (i=0; i <= XDelta; i++)
{
*ScreenPtr = Color;
ScreenPtr += XAdvance + surface->w;
}
UNLOCK_SURFACE_AND_RETURN;
}
/* Determine whether the line is X or Y major, and handle accordingly */
if (XDelta >= YDelta) /* X major line */
{
WholeStep = XDelta / YDelta;
AdjUp = (XDelta % YDelta) * 2;
AdjDown = YDelta * 2;
ErrorTerm = (XDelta % YDelta) - (YDelta * 2);
InitialPixelCount = (WholeStep / 2) + 1;
FinalPixelCount = InitialPixelCount;
if ((AdjUp == 0) && ((WholeStep & 0x01) == 0)) InitialPixelCount--;
if ((WholeStep & 0x01) != 0) ErrorTerm += YDelta;
DrawHorizontalRun(&ScreenPtr, XAdvance, InitialPixelCount, Color);
for (i=0; i<(YDelta-1); i++)
{
RunLength = WholeStep;
if ((ErrorTerm += AdjUp) > 0)
{
RunLength ++;
ErrorTerm -= AdjDown;
}
DrawHorizontalRun(&ScreenPtr, XAdvance, RunLength, Color);
}
DrawHorizontalRun(&ScreenPtr, XAdvance, FinalPixelCount, Color);
UNLOCK_SURFACE_AND_RETURN;
} else { /* Y major line */
WholeStep = YDelta / XDelta;
AdjUp = (YDelta % XDelta) * 2;
AdjDown = XDelta * 2;
ErrorTerm = (YDelta % XDelta) - (XDelta * 2);
InitialPixelCount = (WholeStep / 2) + 1;
FinalPixelCount = InitialPixelCount;
if ((AdjUp == 0) && ((WholeStep & 0x01) == 0)) InitialPixelCount --;
if ((WholeStep & 0x01) != 0) ErrorTerm += XDelta;
DrawVerticalRun(&ScreenPtr, XAdvance, InitialPixelCount, Color);
for (i=0; i<(XDelta-1); i++)
{
RunLength = WholeStep;
if ((ErrorTerm += AdjUp) > 0)
{
RunLength ++;
ErrorTerm -= AdjDown;
}
DrawVerticalRun(&ScreenPtr, XAdvance, RunLength, Color);
}
DrawVerticalRun(&ScreenPtr, XAdvance, FinalPixelCount, Color);
UNLOCK_SURFACE_AND_RETURN;
}
} /* drawline16 */
void clear2dscreen(void)
{
SDL_Rect rect;
rect.x = rect.y = 0;
rect.w = surface->w;
if (qsetmode == 350)
rect.h = 350;
else if (qsetmode == 480)
{
if (ydim16 <= 336)
rect.h = 336;
else
rect.h = 480;
} /* else if */
SDL_FillRect(surface, &rect, 0);
} /* clear2dscreen */
void _idle(void)
{
if (surface != NULL)
_handle_events();
SDL_Delay(1);
} /* _idle */
void *_getVideoBase(void)
{
return((void *) surface->pixels);
}
//-------------------------------------------------------------------------------------------------
// TIMER
//=================================================================================================
// FIX_00007: game speed corrected. The game speed is now as the real
// DOS duke3d. Unloading a full 200 bullet pistol must take 45.1 sec.
// SDL timer was not fast/accurate enough and was slowing down the gameplay,
// so bad
static int64_t timerfreq=0;
static int32_t timerlastsample=0;
static int timerticspersec=0;
static void (*usertimercallback)(void) = NULL;
// This timer stuff is all Ken's idea.
//
// installusertimercallback() -- set up a callback function to be called when the timer is fired
//
void (*installusertimercallback(void (*callback)(void)))(void)
{
void (*oldtimercallback)(void);
oldtimercallback = usertimercallback;
usertimercallback = callback;
return oldtimercallback;
}
/*
inittimer() -- initialise timer
FCS: The tickspersecond parameter is a ratio value that helps replicating
oldschool DOS tick per seconds.
The way the timer work is:
float newSystemTickPerSecond = [0,1]
tickPerSecond on a DOS system = tickspersecond * newSystemTickPerSecond ;
*/
int inittimer(int tickspersecond)
{
int64_t t;
if (timerfreq) return 0; // already installed
//printf("Initialising timer, with tickPerSecond=%d\n",tickspersecond);
timerfreq = 1000;
timerticspersec = tickspersecond;
t = SDL_GetTicks();
timerlastsample = (int32_t)(t*timerticspersec / timerfreq);
usertimercallback = NULL;
return 0;
}
//
// uninittimer() -- shut down timer
//
void uninittimer(void)
{
if (!timerfreq) return;
timerfreq=0;
timerticspersec = 0;
}
//
// sampletimer() -- update totalclock
//
void sampletimer(void)
{
int64_t i;
int32_t n;
if (!timerfreq) return;
i = SDL_GetTicks();
n = (int32_t)(i*timerticspersec / timerfreq) - timerlastsample;
if (n>0) {
totalclock += n;
timerlastsample += n;
}
if (usertimercallback) for (; n>0; n--) usertimercallback();
}
/*
getticks() -- returns the windows ticks count
FCS: This seeems to be only used in the multiplayer code
*/
uint32_t getticks(void)
{
int64_t i;
i = SDL_GetTicks();
return (uint32_t)(i*(int32_t)(1000)/timerfreq);
}
//
// gettimerfreq() -- returns the number of ticks per second the timer is configured to generate
//
int gettimerfreq(void)
{
return timerticspersec;
}