diff options
Diffstat (limited to 'src/glut/glx/glut_gamemode.c')
| -rw-r--r-- | src/glut/glx/glut_gamemode.c | 677 |
1 files changed, 0 insertions, 677 deletions
diff --git a/src/glut/glx/glut_gamemode.c b/src/glut/glx/glut_gamemode.c deleted file mode 100644 index 4a92099f3fe..00000000000 --- a/src/glut/glx/glut_gamemode.c +++ /dev/null @@ -1,677 +0,0 @@ - -/* Copyright (c) Mark J. Kilgard, 1998. */ - -/* This program is freely distributable without licensing fees - and is provided without guarantee or warrantee expressed or - implied. This program is -not- in the public domain. */ - -#ifdef __VMS -#include <GL/vms_x_fix.h> -#endif - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "glutint.h" - -#ifndef _WIN32 -#include <X11/Xlib.h> - -/* SGI optimization introduced in IRIX 6.3 to avoid X server - round trips for interning common X atoms. */ -#if defined(_SGI_EXTRA_PREDEFINES) && !defined(NO_FAST_ATOMS) -#include <X11/SGIFastAtom.h> -#else -#define XSGIFastInternAtom(dpy,string,fast_name,how) XInternAtom(dpy,string,how) -#endif -#endif /* not _WIN32 */ - -int __glutDisplaySettingsChanged = 0; -static DisplayMode *dmodes, *currentDm = NULL; -static int ndmodes = -1; -GLUTwindow *__glutGameModeWindow = NULL; - -#ifdef TEST -static char *compstr[] = -{ - "none", "=", "!=", "<=", ">=", ">", "<", "~" -}; -static char *capstr[] = -{ - "width", "height", "bpp", "hertz", "num" -}; -#endif - -void -__glutCloseDownGameMode(void) -{ - if (__glutDisplaySettingsChanged) { -#ifdef _WIN32 - /* Assumes that display settings have been changed, that - is __glutDisplaySettingsChanged is true. */ - ChangeDisplaySettings(NULL, 0); -#endif - __glutDisplaySettingsChanged = 0; - } - __glutGameModeWindow = NULL; -} - -void GLUTAPIENTRY -glutLeaveGameMode(void) -{ - if (__glutGameModeWindow == NULL) { - __glutWarning("not in game mode so cannot leave game mode"); - return; - } - __glutDestroyWindow(__glutGameModeWindow, - __glutGameModeWindow); - XFlush(__glutDisplay); - __glutGameModeWindow = NULL; -} - -#ifdef _WIN32 - -/* Same values as from MSDN's SetDisp.c example. */ -#define MIN_WIDTH 400 -#define MIN_FREQUENCY 60 - -static void -initGameModeSupport(void) -{ - DEVMODE dm; - DWORD mode; - int i; - - if (ndmodes >= 0) { - /* ndmodes is initially -1 to indicate no - dmodes allocated yet. */ - return; - } - - /* Determine how many display modes there are. */ - ndmodes = 0; - mode = 0; - while (EnumDisplaySettings(NULL, mode, &dm)) { - if (dm.dmPelsWidth >= MIN_WIDTH && - (dm.dmDisplayFrequency == 0 || - dm.dmDisplayFrequency >= MIN_FREQUENCY)) { - ndmodes++; - } - mode++; - } - - /* Allocate memory for a list of all the display modes. */ - dmodes = (DisplayMode*) - malloc(ndmodes * sizeof(DisplayMode)); - - /* Now that we know how many display modes to expect, - enumerate them again and save the information in - the list we allocated above. */ - i = 0; - mode = 0; - while (EnumDisplaySettings(NULL, mode, &dm)) { - /* Try to reject any display settings that seem unplausible. */ - if (dm.dmPelsWidth >= MIN_WIDTH && - (dm.dmDisplayFrequency == 0 || - dm.dmDisplayFrequency >= MIN_FREQUENCY)) { - dmodes[i].devmode = dm; - dmodes[i].valid = 1; /* XXX Not used for now. */ - dmodes[i].cap[DM_WIDTH] = dm.dmPelsWidth; - dmodes[i].cap[DM_HEIGHT] = dm.dmPelsHeight; - dmodes[i].cap[DM_PIXEL_DEPTH] = dm.dmBitsPerPel; - if (dm.dmDisplayFrequency == 0) { - /* Guess a reasonable guess. */ - /* Lame Windows 95 version of EnumDisplaySettings. */ - dmodes[i].cap[DM_HERTZ] = 60; - } else { - dmodes[i].cap[DM_HERTZ] = dm.dmDisplayFrequency; - } - i++; - } - mode++; - } - - assert(i == ndmodes); -} - -#else - -/* X Windows version of initGameModeSupport. */ -static void -initGameModeSupport(void) -{ - if (ndmodes >= 0) { - /* ndmodes is initially -1 to indicate no - dmodes allocated yet. */ - return; - } - - /* Determine how many display modes there are. */ - ndmodes = 0; -} - -#endif - -/* This routine is based on similiar code in glut_dstr.c */ -static DisplayMode * -findMatch(DisplayMode * dmodes, int ndmodes, - Criterion * criteria, int ncriteria) -{ - DisplayMode *found; - int *bestScore, *thisScore; - int i, j, numok, result = 0, worse, better; - - found = NULL; - numok = 1; /* "num" capability is indexed from 1, - not 0. */ - - /* XXX alloca canidate. */ - bestScore = (int *) malloc(ncriteria * sizeof(int)); - if (!bestScore) { - __glutFatalError("out of memory."); - } - for (j = 0; j < ncriteria; j++) { - /* Very negative number. */ - bestScore[j] = -32768; - } - - /* XXX alloca canidate. */ - thisScore = (int *) malloc(ncriteria * sizeof(int)); - if (!thisScore) { - __glutFatalError("out of memory."); - } - - for (i = 0; i < ndmodes; i++) { - if (dmodes[i].valid) { - worse = 0; - better = 0; - - for (j = 0; j < ncriteria; j++) { - int cap, cvalue, dvalue; - - cap = criteria[j].capability; - cvalue = criteria[j].value; - if (cap == NUM) { - dvalue = numok; - } else { - dvalue = dmodes[i].cap[cap]; - } -#ifdef TEST - if (verbose) - printf(" %s %s %d to %d\n", - capstr[cap], compstr[criteria[j].comparison], cvalue, dvalue); -#endif - switch (criteria[j].comparison) { - case EQ: - result = cvalue == dvalue; - thisScore[j] = 1; - break; - case NEQ: - result = cvalue != dvalue; - thisScore[j] = 1; - break; - case LT: - result = dvalue < cvalue; - thisScore[j] = dvalue - cvalue; - break; - case GT: - result = dvalue > cvalue; - thisScore[j] = dvalue - cvalue; - break; - case LTE: - result = dvalue <= cvalue; - thisScore[j] = dvalue - cvalue; - break; - case GTE: - result = (dvalue >= cvalue); - thisScore[j] = dvalue - cvalue; - break; - case MIN: - result = dvalue >= cvalue; - thisScore[j] = cvalue - dvalue; - break; - } - -#ifdef TEST - if (verbose) - printf(" result=%d score=%d bestScore=%d\n", result, thisScore[j], bestScore[j]); -#endif - - if (result) { - if (better || thisScore[j] > bestScore[j]) { - better = 1; - } else if (thisScore[j] == bestScore[j]) { - /* Keep looking. */ - } else { - goto nextDM; - } - } else { - if (cap == NUM) { - worse = 1; - } else { - goto nextDM; - } - } - - } - - if (better && !worse) { - found = &dmodes[i]; - for (j = 0; j < ncriteria; j++) { - bestScore[j] = thisScore[j]; - } - } - numok++; - - nextDM:; - - } - } - free(bestScore); - free(thisScore); - return found; -} - -/** - * Parses strings in the form of: - * 800x600 - * 800x600:16 - * 800x600@60 - * 800x600:16@60 - * @60 - * :16 - * :16@60 - * NOTE that @ before : is not parsed. - */ -static int -specialCaseParse(char *word, Criterion * criterion, int mask) -{ - char *xstr, *response; - int got; - int width, height, bpp, hertz; - - switch(word[0]) { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - /* The WWWxHHH case. */ - if (mask & (1 << DM_WIDTH)) { - return -1; - } - xstr = strpbrk(&word[1], "x"); - if (xstr) { - width = (int) strtol(word, &response, 0); - if (response == word || response[0] != 'x') { - /* Not a valid number OR needs to be followed by 'x'. */ - return -1; - } - height = (int) strtol(&xstr[1], &response, 0); - if (response == &xstr[1]) { - /* Not a valid number. */ - return -1; - } - criterion[0].capability = DM_WIDTH; - criterion[0].comparison = EQ; - criterion[0].value = width; - criterion[1].capability = DM_HEIGHT; - criterion[1].comparison = EQ; - criterion[1].value = height; - got = specialCaseParse(response, - &criterion[2], 1 << DM_WIDTH); - if (got >= 0) { - return got + 2; - } else { - return -1; - } - } - return -1; - case ':': - /* The :BPP case. */ - if (mask & (1 << DM_PIXEL_DEPTH)) { - return -1; - } - bpp = (int) strtol(&word[1], &response, 0); - if (response == &word[1]) { - /* Not a valid number. */ - return -1; - } - criterion[0].capability = DM_PIXEL_DEPTH; - criterion[0].comparison = EQ; - criterion[0].value = bpp; - got = specialCaseParse(response, - &criterion[1], 1 << DM_WIDTH | 1 << DM_PIXEL_DEPTH); - if (got >= 0) { - return got + 1; - } else { - return -1; - } - case '@': - /* The @HZ case. */ - if (mask & (1 << DM_HERTZ)) { - return -1; - } - hertz = (int) strtol(&word[1], &response, 0); - if (response == &word[1]) { - /* Not a valid number. */ - return -1; - } - criterion[0].capability = DM_HERTZ; - criterion[0].comparison = EQ; - criterion[0].value = hertz; - got = specialCaseParse(response, - &criterion[1], ~DM_HERTZ); - if (got >= 0) { - return got + 1; - } else { - return -1; - } - case '\0': - return 0; - } - return -1; -} - -/* This routine is based on similiar code in glut_dstr.c */ -static int -parseCriteria(char *word, Criterion * criterion) -{ - char *cstr, *vstr, *response; - int comparator, value = 0; - - cstr = strpbrk(word, "=><!~"); - if (cstr) { - switch (cstr[0]) { - case '=': - comparator = EQ; - vstr = &cstr[1]; - break; - case '~': - comparator = MIN; - vstr = &cstr[1]; - break; - case '>': - if (cstr[1] == '=') { - comparator = GTE; - vstr = &cstr[2]; - } else { - comparator = GT; - vstr = &cstr[1]; - } - break; - case '<': - if (cstr[1] == '=') { - comparator = LTE; - vstr = &cstr[2]; - } else { - comparator = LT; - vstr = &cstr[1]; - } - break; - case '!': - if (cstr[1] == '=') { - comparator = NEQ; - vstr = &cstr[2]; - } else { - return -1; - } - break; - default: - return -1; - } - value = (int) strtol(vstr, &response, 0); - if (response == vstr) { - /* Not a valid number. */ - return -1; - } - *cstr = '\0'; - } else { - comparator = NONE; - } - switch (word[0]) { - case 'b': - if (!strcmp(word, "bpp")) { - criterion[0].capability = DM_PIXEL_DEPTH; - if (comparator == NONE) { - return -1; - } else { - criterion[0].comparison = comparator; - criterion[0].value = value; - return 1; - } - } - return -1; - case 'h': - if (!strcmp(word, "height")) { - criterion[0].capability = DM_HEIGHT; - if (comparator == NONE) { - return -1; - } else { - criterion[0].comparison = comparator; - criterion[0].value = value; - return 1; - } - } - if (!strcmp(word, "hertz")) { - criterion[0].capability = DM_HERTZ; - if (comparator == NONE) { - return -1; - } else { - criterion[0].comparison = comparator; - criterion[0].value = value; - return 1; - } - } - return -1; - case 'n': - if (!strcmp(word, "num")) { - criterion[0].capability = DM_NUM; - if (comparator == NONE) { - return -1; - } else { - criterion[0].comparison = comparator; - criterion[0].value = value; - return 1; - } - } - return -1; - case 'w': - if (!strcmp(word, "width")) { - criterion[0].capability = DM_WIDTH; - if (comparator == NONE) { - return -1; - } else { - criterion[0].comparison = comparator; - criterion[0].value = value; - return 1; - } - } - return -1; - } - if (comparator == NONE) { - return specialCaseParse(word, criterion, 0); - } - return -1; -} - -/* This routine is based on similiar code in glut_dstr.c */ -static Criterion * -parseDisplayString(const char *display, int *ncriteria) -{ - Criterion *criteria = NULL; - int n, parsed; - char *copy, *word; - - copy = __glutStrdup(display); - /* Attempt to estimate how many criteria entries should be - needed. */ - n = 0; - word = strtok(copy, " \t"); - while (word) { - n++; - word = strtok(NULL, " \t"); - } - /* Allocate number of words of criteria. A word - could contain as many as four criteria in the - worst case. Example: 800x600:16@60 */ - criteria = (Criterion *) malloc(4 * n * sizeof(Criterion)); - if (!criteria) { - __glutFatalError("out of memory."); - } - - /* Re-copy the copy of the display string. */ - strcpy(copy, display); - - n = 0; - word = strtok(copy, " \t"); - while (word) { - parsed = parseCriteria(word, &criteria[n]); - if (parsed >= 0) { - n += parsed; - } else { - __glutWarning("Unrecognized game mode string word: %s (ignoring)\n", word); - } - word = strtok(NULL, " \t"); - } - - free(copy); - *ncriteria = n; - return criteria; -} - -void GLUTAPIENTRY -glutGameModeString(const char *string) -{ - Criterion *criteria; - int ncriteria; - - initGameModeSupport(); - criteria = parseDisplayString(string, &ncriteria); - currentDm = findMatch(dmodes, ndmodes, criteria, ncriteria); - free(criteria); -} - -int GLUTAPIENTRY -glutEnterGameMode(void) -{ - GLUTwindow *window; - int width, height; - Window win; - - if (__glutMappedMenu) { - __glutFatalUsage("entering game mode not allowed while menus in use"); - } - if (__glutGameModeWindow) { - /* Already in game mode, so blow away game mode - window so apps can change resolutions. */ - window = __glutGameModeWindow; - /* Setting the game mode window to NULL tricks - the window destroy code into not undoing the - screen display change since we plan on immediately - doing another mode change. */ - __glutGameModeWindow = NULL; - __glutDestroyWindow(window, window); - } - - /* Assume default screen size until we find out if we - can actually change the display settings. */ - width = __glutScreenWidth; - height = __glutScreenHeight; - - if (currentDm) { -#ifdef _WIN32 - LONG status; - static int registered = 0; - - status = ChangeDisplaySettings(¤tDm->devmode, - CDS_FULLSCREEN); - if (status == DISP_CHANGE_SUCCESSFUL) { - __glutDisplaySettingsChanged = 1; - width = currentDm->cap[DM_WIDTH]; - height = currentDm->cap[DM_HEIGHT]; - if (!registered) { - atexit(__glutCloseDownGameMode); - registered = 1; - } - } else { - /* Switch back to default resolution. */ - ChangeDisplaySettings(NULL, 0); - } -#endif - } - - window = __glutCreateWindow(NULL, 0, 0, - width, height, /* game mode */ 1); - win = window->win; - -#if !defined(_WIN32) - if (__glutMotifHints == None) { - __glutMotifHints = XSGIFastInternAtom(__glutDisplay, "_MOTIF_WM_HINTS", - SGI_XA__MOTIF_WM_HINTS, 0); - if (__glutMotifHints == None) { - __glutWarning("Could not intern X atom for _MOTIF_WM_HINTS."); - } - } - - /* Game mode window is a toplevel window. */ - XSetWMProtocols(__glutDisplay, win, &__glutWMDeleteWindow, 1); -#endif - - /* Schedule the fullscreen property to be added and to - make sure the window is configured right. Win32 - doesn't need this. */ - window->desiredX = 0; - window->desiredY = 0; - window->desiredWidth = width; - window->desiredHeight = height; - window->desiredConfMask |= CWX | CWY | CWWidth | CWHeight; -#ifdef _WIN32 - /* Win32 does not want to use GLUT_FULL_SCREEN_WORK - for game mode because we need to be maximizing - the window in game mode, not just sizing it to - take up the full screen. The Win32-ness of game - mode happens when you pass 1 in the gameMode parameter - to __glutCreateWindow above. A gameMode of creates - a WS_POPUP window, not a standard WS_OVERLAPPEDWINDOW - window. WS_POPUP ensures the taskbar is hidden. */ - __glutPutOnWorkList(window, - GLUT_CONFIGURE_WORK); -#else - __glutPutOnWorkList(window, - GLUT_CONFIGURE_WORK | GLUT_FULL_SCREEN_WORK); -#endif - - __glutGameModeWindow = window; - return window->num + 1; -} - -int GLUTAPIENTRY -glutGameModeGet(GLenum mode) -{ - switch (mode) { - case GLUT_GAME_MODE_ACTIVE: - return __glutGameModeWindow != NULL; - case GLUT_GAME_MODE_POSSIBLE: - return currentDm != NULL; - case GLUT_GAME_MODE_WIDTH: - return currentDm ? currentDm->cap[DM_WIDTH] : -1; - case GLUT_GAME_MODE_HEIGHT: - return currentDm ? currentDm->cap[DM_HEIGHT] : -1; - case GLUT_GAME_MODE_PIXEL_DEPTH: - return currentDm ? currentDm->cap[DM_PIXEL_DEPTH] : -1; - case GLUT_GAME_MODE_REFRESH_RATE: - return currentDm ? currentDm->cap[DM_HERTZ] : -1; - case GLUT_GAME_MODE_DISPLAY_CHANGED: - return __glutDisplaySettingsChanged; - default: - return -1; - } -} |