diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/src/glut/glx/glut_init.c')
-rw-r--r-- | nx-X11/extras/Mesa_6.4.1/src/glut/glx/glut_init.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/src/glut/glx/glut_init.c b/nx-X11/extras/Mesa_6.4.1/src/glut/glx/glut_init.c new file mode 100644 index 000000000..b1a42a328 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.1/src/glut/glx/glut_init.c @@ -0,0 +1,390 @@ + +/* Copyright (c) Mark J. Kilgard, 1994, 1997. */ + +/* 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 <stdlib.h> +#include <string.h> +#include <stdio.h> + +#if !defined(_WIN32) +#include <X11/Xlib.h> +#include <X11/Xatom.h> +#endif + +/* 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 + +#include "glutint.h" + +/* GLUT inter-file variables */ +/* *INDENT-OFF* */ +char *__glutProgramName = NULL; +int __glutArgc = 0; +char **__glutArgv = NULL; +char *__glutGeometry = NULL; +Display *__glutDisplay = NULL; +int __glutScreen; +Window __glutRoot; +int __glutScreenHeight; +int __glutScreenWidth; +GLboolean __glutIconic = GL_FALSE; +GLboolean __glutDebug = GL_FALSE; +unsigned int __glutDisplayMode = + GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH; +char *__glutDisplayString = NULL; +int __glutConnectionFD; +XSizeHints __glutSizeHints = {0}; +int __glutInitWidth = 300, __glutInitHeight = 300; +int __glutInitX = -1, __glutInitY = -1; +GLboolean __glutForceDirect = GL_FALSE, + __glutTryDirect = GL_TRUE; +Atom __glutWMDeleteWindow; +/* *INDENT-ON* */ + +#ifdef _WIN32 +void (__cdecl *__glutExitFunc)(int retval) = NULL; +#endif + +static Bool synchronize = False; + +#if defined(_WIN32) + +#ifdef __BORLANDC__ +#include <float.h> /* For masking floating point exceptions. */ +#endif + +void +__glutOpenWin32Connection(char* display) +{ + static char *classname; + WNDCLASS wc; + HINSTANCE hInstance = GetModuleHandle(NULL); + + /* Make sure we register the window only once. */ + if(classname) + return; + +#ifdef __BORLANDC__ + /* Under certain conditions (e.g. while rendering solid surfaces with + lighting enabled) Microsoft OpenGL libraries cause some illegal + operations like floating point overflow or division by zero. The + default behaviour of Microsoft compilers is to mask (ignore) + floating point exceptions, while Borland compilers do not. The + following function of Borland RTL allows to mask exceptions. + Advice from Pier Giorgio Esposito (mc2172@mclink.it). */ + _control87(MCW_EM,MCW_EM); +#endif + + classname = "GLUT"; + + /* Clear (important!) and then fill in the window class structure. */ + memset(&wc, 0, sizeof(WNDCLASS)); + wc.style = CS_OWNDC; + wc.lpfnWndProc = (WNDPROC)__glutWindowProc; + wc.hInstance = hInstance; + wc.hIcon = LoadIcon(hInstance, "GLUT_ICON"); + wc.hCursor = LoadCursor(hInstance, IDC_ARROW); + wc.hbrBackground = NULL; + wc.lpszMenuName = NULL; + wc.lpszClassName = classname; + + /* Fill in a default icon if one isn't specified as a resource. */ + if(!wc.hIcon) + wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); + + if(!RegisterClass(&wc)) { + __glutFatalError("RegisterClass() failed:" + "Cannot register GLUT window class."); + } + + __glutScreenWidth = GetSystemMetrics(SM_CXSCREEN); + __glutScreenHeight = GetSystemMetrics(SM_CYSCREEN); + + /* Set the root window to NULL because windows creates a top-level + window when the parent is NULL. X creates a top-level window + when the parent is the root window. */ + __glutRoot = NULL; + + /* Set the display to 1 -- we shouldn't be using this anywhere + (except as an argument to X calls). */ + __glutDisplay = (Display*)1; + + /* There isn't any concept of multiple screens in Win32, therefore, + we don't need to keep track of the screen we're on... it's always + the same one. */ + __glutScreen = 0; +} +#else /* !_WIN32 */ +void +__glutOpenXConnection(char *display) +{ + int errorBase, eventBase; + + __glutDisplay = XOpenDisplay(display); + if (!__glutDisplay) + __glutFatalError("could not open display: %s", + XDisplayName(display)); + if (synchronize) + XSynchronize(__glutDisplay, True); + if (!glXQueryExtension(__glutDisplay, &errorBase, &eventBase)) + __glutFatalError( + "OpenGL GLX extension not supported by display: %s", + XDisplayName(display)); + __glutScreen = DefaultScreen(__glutDisplay); + __glutRoot = RootWindow(__glutDisplay, __glutScreen); + __glutScreenWidth = DisplayWidth(__glutDisplay, __glutScreen); + __glutScreenHeight = DisplayHeight(__glutDisplay, + __glutScreen); + __glutConnectionFD = ConnectionNumber(__glutDisplay); + __glutWMDeleteWindow = XSGIFastInternAtom(__glutDisplay, + "WM_DELETE_WINDOW", SGI_XA_WM_DELETE_WINDOW, False); +} +#endif /* _WIN32 */ + +void +#ifdef OLD_VMS + __glutInitTime(struct timeval6 *beginning) +#else + __glutInitTime(struct timeval *beginning) +#endif +{ + static int beenhere = 0; +#ifdef OLD_VMS + static struct timeval6 genesis; +#else + static struct timeval genesis; +#endif + + if (!beenhere) { + GETTIMEOFDAY(&genesis); + beenhere = 1; + } + *beginning = genesis; +} + +static void +removeArgs(int *argcp, char **argv, int numToRemove) +{ + int i, j; + + for (i = 0, j = numToRemove; argv[j]; i++, j++) { + argv[i] = argv[j]; + } + argv[i] = NULL; + *argcp -= numToRemove; +} + +void GLUTAPIENTRY +glutInit(int *argcp, char **argv) +{ + char *display = NULL; + char *str, *geometry = NULL; +#ifdef OLD_VMS + struct timeval6 unused; +#else + struct timeval unused; +#endif + int i; + + if (__glutDisplay) { + __glutWarning("glutInit being called a second time."); + return; + } + /* Determine temporary program name. */ + str = strrchr(argv[0], '/'); + if (str == NULL) { + __glutProgramName = argv[0]; + } else { + __glutProgramName = str + 1; + } + + /* Make private copy of command line arguments. */ + __glutArgc = *argcp; + __glutArgv = (char **) malloc(__glutArgc * sizeof(char *)); + if (!__glutArgv) + __glutFatalError("out of memory."); + for (i = 0; i < __glutArgc; i++) { + __glutArgv[i] = __glutStrdup(argv[i]); + if (!__glutArgv[i]) + __glutFatalError("out of memory."); + } + + /* determine permanent program name */ + str = strrchr(__glutArgv[0], '/'); + if (str == NULL) { + __glutProgramName = __glutArgv[0]; + } else { + __glutProgramName = str + 1; + } + + /* parse arguments for standard options */ + for (i = 1; i < __glutArgc; i++) { + if (!strcmp(__glutArgv[i], "-display")) { +#if defined(_WIN32) + __glutWarning("-display option not supported by Win32 GLUT."); +#endif + if (++i >= __glutArgc) { + __glutFatalError( + "follow -display option with X display name."); + } + display = __glutArgv[i]; + removeArgs(argcp, &argv[1], 2); + } else if (!strcmp(__glutArgv[i], "-geometry")) { + if (++i >= __glutArgc) { + __glutFatalError( + "follow -geometry option with geometry parameter."); + } + geometry = __glutArgv[i]; + removeArgs(argcp, &argv[1], 2); + } else if (!strcmp(__glutArgv[i], "-direct")) { +#if defined(_WIN32) + __glutWarning("-direct option not supported by Win32 GLUT."); +#endif + if (!__glutTryDirect) + __glutFatalError( + "cannot force both direct and indirect rendering."); + __glutForceDirect = GL_TRUE; + removeArgs(argcp, &argv[1], 1); + } else if (!strcmp(__glutArgv[i], "-indirect")) { +#if defined(_WIN32) + __glutWarning("-indirect option not supported by Win32 GLUT."); +#endif + if (__glutForceDirect) + __glutFatalError( + "cannot force both direct and indirect rendering."); + __glutTryDirect = GL_FALSE; + removeArgs(argcp, &argv[1], 1); + } else if (!strcmp(__glutArgv[i], "-iconic")) { + __glutIconic = GL_TRUE; + removeArgs(argcp, &argv[1], 1); + } else if (!strcmp(__glutArgv[i], "-gldebug")) { + __glutDebug = GL_TRUE; + removeArgs(argcp, &argv[1], 1); + } else if (!strcmp(__glutArgv[i], "-sync")) { +#if defined(_WIN32) + __glutWarning("-sync option not supported by Win32 GLUT."); +#endif + synchronize = GL_TRUE; + removeArgs(argcp, &argv[1], 1); + } else { + /* Once unknown option encountered, stop command line + processing. */ + break; + } + } +#if defined(_WIN32) + __glutOpenWin32Connection(display); +#else + __glutOpenXConnection(display); +#endif + if (geometry) { + int flags, x, y, width, height; + + /* Fix bogus "{width|height} may be used before set" + warning */ + width = 0; + height = 0; + + flags = XParseGeometry(geometry, &x, &y, + (unsigned int *) &width, (unsigned int *) &height); + if (WidthValue & flags) { + /* Careful because X does not allow zero or negative + width windows */ + if (width > 0) + __glutInitWidth = width; + } + if (HeightValue & flags) { + /* Careful because X does not allow zero or negative + height windows */ + if (height > 0) + __glutInitHeight = height; + } + glutInitWindowSize(__glutInitWidth, __glutInitHeight); + if (XValue & flags) { + if (XNegative & flags) + x = DisplayWidth(__glutDisplay, __glutScreen) + + x - __glutSizeHints.width; + /* Play safe: reject negative X locations */ + if (x >= 0) + __glutInitX = x; + } + if (YValue & flags) { + if (YNegative & flags) + y = DisplayHeight(__glutDisplay, __glutScreen) + + y - __glutSizeHints.height; + /* Play safe: reject negative Y locations */ + if (y >= 0) + __glutInitY = y; + } + glutInitWindowPosition(__glutInitX, __glutInitY); + } + __glutInitTime(&unused); + + /* check if GLUT_FPS env var is set */ + { + const char *fps = getenv("GLUT_FPS"); + if (fps) { + sscanf(fps, "%d", &__glutFPS); + if (__glutFPS <= 0) + __glutFPS = 5000; /* 5000 milliseconds */ + } + } +} + +#ifdef _WIN32 +void GLUTAPIENTRY +__glutInitWithExit(int *argcp, char **argv, void (__cdecl *exitfunc)(int)) +{ + __glutExitFunc = exitfunc; + glutInit(argcp, argv); +} +#endif + +/* CENTRY */ +void GLUTAPIENTRY +glutInitWindowPosition(int x, int y) +{ + __glutInitX = x; + __glutInitY = y; + if (x >= 0 && y >= 0) { + __glutSizeHints.x = x; + __glutSizeHints.y = y; + __glutSizeHints.flags |= USPosition; + } else { + __glutSizeHints.flags &= ~USPosition; + } +} + +void GLUTAPIENTRY +glutInitWindowSize(int width, int height) +{ + __glutInitWidth = width; + __glutInitHeight = height; + if (width > 0 && height > 0) { + __glutSizeHints.width = width; + __glutSizeHints.height = height; + __glutSizeHints.flags |= USSize; + } else { + __glutSizeHints.flags &= ~USSize; + } +} + +void GLUTAPIENTRY +glutInitDisplayMode(unsigned int mask) +{ + __glutDisplayMode = mask; +} + +/* ENDCENTRY */ |