+++ /dev/null
-
-/* 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. */
-
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "glutint.h"
-
-#if !defined(_WIN32) && !defined(__OS2__)
-#include <X11/Xlib.h>
-#include <X11/Xatom.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
-
-#if defined(__OS2__)
-void
-#else
-void __cdecl
-#endif
-__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) && !defined(__OS2__)
- 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;
- }
-}
projects / mesa.git / blobdiff