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Diffstat (limited to 'progs/xdemos/glxcontexts.c')
| -rw-r--r-- | progs/xdemos/glxcontexts.c | 548 |
1 files changed, 0 insertions, 548 deletions
diff --git a/progs/xdemos/glxcontexts.c b/progs/xdemos/glxcontexts.c deleted file mode 100644 index 9f83679acd3..00000000000 --- a/progs/xdemos/glxcontexts.c +++ /dev/null @@ -1,548 +0,0 @@ -/* - * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/* - * Version of glxgears that creates/destroys the rendering context for each - * frame. Also periodically destroy/recreate the window. - * Good for finding memory leaks, etc. - * - * Command line options: - * -info print GL implementation information - * - */ - - -#include <assert.h> -#include <math.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <X11/Xlib.h> -#include <X11/keysym.h> -#include <GL/gl.h> -#include <GL/glx.h> - - -#define BENCHMARK - -#ifdef BENCHMARK - -/* XXX this probably isn't very portable */ - -#include <sys/time.h> -#include <unistd.h> - -/* return current time (in seconds) */ -static double -current_time(void) -{ - struct timeval tv; -#ifdef __VMS - (void) gettimeofday(&tv, NULL ); -#else - struct timezone tz; - (void) gettimeofday(&tv, &tz); -#endif - return (double) tv.tv_sec + tv.tv_usec / 1000000.0; -} - -#else /*BENCHMARK*/ - -/* dummy */ -static double -current_time(void) -{ - /* update this function for other platforms! */ - static double t = 0.0; - static int warn = 1; - if (warn) { - fprintf(stderr, "Warning: current_time() not implemented!!\n"); - warn = 0; - } - return t += 1.0; -} - -#endif /*BENCHMARK*/ - - - -#ifndef M_PI -#define M_PI 3.14159265 -#endif - - -static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0; -static GLint gear1, gear2, gear3; -static GLfloat angle = 0.0; - -static XVisualInfo *visinfo = NULL; -static int WinWidth = 300, WinHeight = 300; - - -/* - * - * Draw a gear wheel. You'll probably want to call this function when - * building a display list since we do a lot of trig here. - * - * Input: inner_radius - radius of hole at center - * outer_radius - radius at center of teeth - * width - width of gear - * teeth - number of teeth - * tooth_depth - depth of tooth - */ -static void -gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width, - GLint teeth, GLfloat tooth_depth) -{ - GLint i; - GLfloat r0, r1, r2; - GLfloat angle, da; - GLfloat u, v, len; - - r0 = inner_radius; - r1 = outer_radius - tooth_depth / 2.0; - r2 = outer_radius + tooth_depth / 2.0; - - da = 2.0 * M_PI / teeth / 4.0; - - glShadeModel(GL_FLAT); - - glNormal3f(0.0, 0.0, 1.0); - - /* draw front face */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); - glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); - if (i < teeth) { - glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - width * 0.5); - } - } - glEnd(); - - /* draw front sides of teeth */ - glBegin(GL_QUADS); - da = 2.0 * M_PI / teeth / 4.0; - for (i = 0; i < teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - - glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); - glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5); - glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), - width * 0.5); - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - width * 0.5); - } - glEnd(); - - glNormal3f(0.0, 0.0, -1.0); - - /* draw back face */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); - glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); - if (i < teeth) { - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - -width * 0.5); - glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); - } - } - glEnd(); - - /* draw back sides of teeth */ - glBegin(GL_QUADS); - da = 2.0 * M_PI / teeth / 4.0; - for (i = 0; i < teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - -width * 0.5); - glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), - -width * 0.5); - glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5); - glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); - } - glEnd(); - - /* draw outward faces of teeth */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i < teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - - glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5); - glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5); - u = r2 * cos(angle + da) - r1 * cos(angle); - v = r2 * sin(angle + da) - r1 * sin(angle); - len = sqrt(u * u + v * v); - u /= len; - v /= len; - glNormal3f(v, -u, 0.0); - glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5); - glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5); - glNormal3f(cos(angle), sin(angle), 0.0); - glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), - width * 0.5); - glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), - -width * 0.5); - u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da); - v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da); - glNormal3f(v, -u, 0.0); - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - width * 0.5); - glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), - -width * 0.5); - glNormal3f(cos(angle), sin(angle), 0.0); - } - - glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5); - glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5); - - glEnd(); - - glShadeModel(GL_SMOOTH); - - /* draw inside radius cylinder */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.0 * M_PI / teeth; - glNormal3f(-cos(angle), -sin(angle), 0.0); - glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5); - glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5); - } - glEnd(); -} - - -static void -do_draw(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotatef(view_rotx, 1.0, 0.0, 0.0); - glRotatef(view_roty, 0.0, 1.0, 0.0); - glRotatef(view_rotz, 0.0, 0.0, 1.0); - - glPushMatrix(); - glTranslatef(-3.0, -2.0, 0.0); - glRotatef(angle, 0.0, 0.0, 1.0); - glCallList(gear1); - glPopMatrix(); - - glPushMatrix(); - glTranslatef(3.1, -2.0, 0.0); - glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0); - glCallList(gear2); - glPopMatrix(); - - glPushMatrix(); - glTranslatef(-3.1, 4.2, 0.0); - glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0); - glCallList(gear3); - glPopMatrix(); - - glPopMatrix(); -} - - -/* new window size or exposure */ -static void -reshape(int width, int height) -{ - glViewport(0, 0, (GLint) width, (GLint) height); - - { - GLfloat h = (GLfloat) height / (GLfloat) width; - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0); - } - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0.0, 0.0, -40.0); -} - - -static void -init(void) -{ - static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 }; - static GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 }; - static GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 }; - static GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 }; - - glLightfv(GL_LIGHT0, GL_POSITION, pos); - glEnable(GL_CULL_FACE); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); - - /* make the gears */ - gear1 = glGenLists(1); - glNewList(gear1, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red); - gear(1.0, 4.0, 1.0, 20, 0.7); - glEndList(); - - gear2 = glGenLists(1); - glNewList(gear2, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green); - gear(0.5, 2.0, 2.0, 10, 0.7); - glEndList(); - - gear3 = glGenLists(1); - glNewList(gear3, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue); - gear(1.3, 2.0, 0.5, 10, 0.7); - glEndList(); - - glEnable(GL_NORMALIZE); -} - - -static void -draw( Display *dpy, Window win ) -{ - GLXContext ctx; - - ctx = glXCreateContext( dpy, visinfo, NULL, True ); - if (!ctx) { - printf("Error: glXCreateContext failed\n"); - exit(1); - } - - glXMakeCurrent(dpy, win, ctx); - - init(); - - reshape(WinWidth, WinHeight); - - do_draw(); - - glDeleteLists(gear1, 1); - glDeleteLists(gear2, 1); - glDeleteLists(gear3, 1); - - glXSwapBuffers(dpy, win); - glXDestroyContext(dpy, ctx); -} - - -/* - * Create an RGB, double-buffered window. - * Return the window and context handles. - */ -static void -make_window( Display *dpy, const char *name, - int x, int y, int width, int height, - Window *winRet) -{ - int attribs[] = { GLX_RGBA, - GLX_RED_SIZE, 1, - GLX_GREEN_SIZE, 1, - GLX_BLUE_SIZE, 1, - GLX_DOUBLEBUFFER, - GLX_DEPTH_SIZE, 1, - None }; - int scrnum; - XSetWindowAttributes attr; - unsigned long mask; - Window root; - Window win; - - scrnum = DefaultScreen( dpy ); - root = RootWindow( dpy, scrnum ); - - if (visinfo) - XFree(visinfo); - - visinfo = glXChooseVisual( dpy, scrnum, attribs ); - if (!visinfo) { - printf("Error: couldn't get an RGB, Double-buffered visual\n"); - exit(1); - } - - /* window attributes */ - attr.background_pixel = 0; - attr.border_pixel = 0; - attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone); - attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; - attr.override_redirect = 0; - mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect; - - win = XCreateWindow( dpy, root, x, y, width, height, - 0, visinfo->depth, InputOutput, - visinfo->visual, mask, &attr ); - - /* set hints and properties */ - { - XSizeHints sizehints; - sizehints.x = x; - sizehints.y = y; - sizehints.width = width; - sizehints.height = height; - sizehints.flags = USSize | USPosition; - XSetNormalHints(dpy, win, &sizehints); - XSetStandardProperties(dpy, win, name, name, - None, (char **)NULL, 0, &sizehints); - } - - *winRet = win; -} - - -static void -event_loop(Display *dpy) -{ - Window win; - make_window(dpy, "glxgears", 0, 0, WinWidth, WinHeight, &win); - XMapWindow(dpy, win); - - while (1) { - while (XPending(dpy) > 0) { - XEvent event; - XNextEvent(dpy, &event); - switch (event.type) { - case Expose: - /* we'll redraw below */ - break; - case ConfigureNotify: - WinWidth = event.xconfigure.width; - WinHeight = event.xconfigure.height; - break; - case KeyPress: - { - char buffer[10]; - int r, code; - code = XLookupKeysym(&event.xkey, 0); - if (code == XK_Left) { - view_roty += 5.0; - } - else if (code == XK_Right) { - view_roty -= 5.0; - } - else if (code == XK_Up) { - view_rotx += 5.0; - } - else if (code == XK_Down) { - view_rotx -= 5.0; - } - else { - r = XLookupString(&event.xkey, buffer, sizeof(buffer), - NULL, NULL); - if (buffer[0] == 27) { - /* escape */ - return; - } - } - } - } - } - - { - static int frames = 0; - static double tRot0 = -1.0, tRate0 = -1.0; - double dt, t = current_time(); - if (tRot0 < 0.0) - tRot0 = t; - dt = t - tRot0; - tRot0 = t; - - /* advance rotation for next frame */ - angle += 70.0 * dt; /* 70 degrees per second */ - if (angle > 3600.0) - angle -= 3600.0; - - draw( dpy, win ); - - frames++; - - if (tRate0 < 0.0) - tRate0 = t; - - if (t - tRate0 >= 1.0) { - GLfloat seconds = t - tRate0; - GLfloat fps = frames / seconds; - printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds, - fps); - tRate0 = t; - - /* Destroy window and create new one */ - XDestroyWindow(dpy, win); - make_window(dpy, "glxgears", - (int)(fps * 100) % 100, (int)(fps * 100) % 100, /* x,y */ - WinWidth, WinHeight, &win); - XMapWindow(dpy, win); - - frames = 0; - } - } - } -} - - -int -main(int argc, char *argv[]) -{ - Display *dpy; - char *dpyName = NULL; - GLboolean printInfo = GL_FALSE; - int i; - - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-display") == 0) { - dpyName = argv[i+1]; - i++; - } - else if (strcmp(argv[i], "-info") == 0) { - printInfo = GL_TRUE; - } - else - printf("Warrning: unknown parameter: %s\n", argv[i]); - } - - dpy = XOpenDisplay(dpyName); - if (!dpy) { - fprintf(stderr, "Error: couldn't open display %s\n", - XDisplayName(dpyName)); - return -1; - } - - if (printInfo) { - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); - printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS)); - } - - event_loop(dpy); - - XCloseDisplay(dpy); - - return 0; -} |