diff options
Diffstat (limited to 'progs/egl/opengl/xeglthreads.c')
-rw-r--r-- | progs/egl/opengl/xeglthreads.c | 775 |
1 files changed, 0 insertions, 775 deletions
diff --git a/progs/egl/opengl/xeglthreads.c b/progs/egl/opengl/xeglthreads.c deleted file mode 100644 index 5787faecb9..0000000000 --- a/progs/egl/opengl/xeglthreads.c +++ /dev/null @@ -1,775 +0,0 @@ -/* - * Copyright (C) 2000 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. - * - * Ported to EGL by Chia-I Wu <olvaffe@gmail.com> - */ - - -/* - * This program tests EGL thread safety. - * Command line options: - * -p Open a display connection for each thread - * -l Enable application-side locking - * -n <num threads> Number of threads to create (default is 2) - * -display <display name> Specify X display (default is $DISPLAY) - * -t Use texture mapping - * - * Brian Paul 20 July 2000 - */ - - -/* - * Notes: - * - Each thread gets its own EGL context. - * - * - The EGL contexts share texture objects. - * - * - When 't' is pressed to update the texture image, the window/thread which - * has input focus is signalled to change the texture. The other threads - * should see the updated texture the next time they call glBindTexture. - */ - - -#if defined(PTHREADS) /* defined by Mesa on Linux and other platforms */ - -#include <assert.h> -#include <X11/Xlib.h> -#include <X11/Xutil.h> -#include <GL/gl.h> -#include <EGL/egl.h> -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <pthread.h> - - -/* - * Each window/thread/context: - */ -struct winthread { - Display *Dpy; - int Index; - pthread_t Thread; - Window Win; - EGLDisplay Display; - EGLContext Context; - EGLSurface Surface; - float Angle; - int WinWidth, WinHeight; - GLboolean NewSize; - GLboolean Initialized; - GLboolean MakeNewTexture; -}; - - -#define MAX_WINTHREADS 100 -static struct winthread WinThreads[MAX_WINTHREADS]; -static int NumWinThreads = 0; -static volatile GLboolean ExitFlag = GL_FALSE; - -static GLboolean MultiDisplays = 0; -static GLboolean Locking = 0; -static GLboolean Texture = GL_FALSE; -static GLuint TexObj = 12; -static GLboolean Animate = GL_TRUE; - -static pthread_mutex_t Mutex; -static pthread_cond_t CondVar; -static pthread_mutex_t CondMutex; - - -static void -Error(const char *msg) -{ - fprintf(stderr, "Error: %s\n", msg); - exit(1); -} - - -static void -signal_redraw(void) -{ - pthread_mutex_lock(&CondMutex); - pthread_cond_broadcast(&CondVar); - pthread_mutex_unlock(&CondMutex); -} - - -static void -MakeNewTexture(struct winthread *wt) -{ -#define TEX_SIZE 128 - static float step = 0.0; - GLfloat image[TEX_SIZE][TEX_SIZE][4]; - GLint width; - int i, j; - - for (j = 0; j < TEX_SIZE; j++) { - for (i = 0; i < TEX_SIZE; i++) { - float dt = 5.0 * (j - 0.5 * TEX_SIZE) / TEX_SIZE; - float ds = 5.0 * (i - 0.5 * TEX_SIZE) / TEX_SIZE; - float r = dt * dt + ds * ds + step; - image[j][i][0] = - image[j][i][1] = - image[j][i][2] = 0.75 + 0.25 * cos(r); - image[j][i][3] = 1.0; - } - } - - step += 0.5; - - glBindTexture(GL_TEXTURE_2D, TexObj); - - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width); - if (width) { - assert(width == TEX_SIZE); - /* sub-tex replace */ - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, TEX_SIZE, TEX_SIZE, - GL_RGBA, GL_FLOAT, image); - } - else { - /* create new */ - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TEX_SIZE, TEX_SIZE, 0, - GL_RGBA, GL_FLOAT, image); - } -} - - - -/* draw a colored cube */ -static void -draw_object(void) -{ - glPushMatrix(); - glScalef(0.75, 0.75, 0.75); - - glColor3f(1, 0, 0); - - if (Texture) { - glBindTexture(GL_TEXTURE_2D, TexObj); - glEnable(GL_TEXTURE_2D); - } - else { - glDisable(GL_TEXTURE_2D); - } - - glBegin(GL_QUADS); - - /* -X */ - glColor3f(0, 1, 1); - glTexCoord2f(0, 0); glVertex3f(-1, -1, -1); - glTexCoord2f(1, 0); glVertex3f(-1, 1, -1); - glTexCoord2f(1, 1); glVertex3f(-1, 1, 1); - glTexCoord2f(0, 1); glVertex3f(-1, -1, 1); - - /* +X */ - glColor3f(1, 0, 0); - glTexCoord2f(0, 0); glVertex3f(1, -1, -1); - glTexCoord2f(1, 0); glVertex3f(1, 1, -1); - glTexCoord2f(1, 1); glVertex3f(1, 1, 1); - glTexCoord2f(0, 1); glVertex3f(1, -1, 1); - - /* -Y */ - glColor3f(1, 0, 1); - glTexCoord2f(0, 0); glVertex3f(-1, -1, -1); - glTexCoord2f(1, 0); glVertex3f( 1, -1, -1); - glTexCoord2f(1, 1); glVertex3f( 1, -1, 1); - glTexCoord2f(0, 1); glVertex3f(-1, -1, 1); - - /* +Y */ - glColor3f(0, 1, 0); - glTexCoord2f(0, 0); glVertex3f(-1, 1, -1); - glTexCoord2f(1, 0); glVertex3f( 1, 1, -1); - glTexCoord2f(1, 1); glVertex3f( 1, 1, 1); - glTexCoord2f(0, 1); glVertex3f(-1, 1, 1); - - /* -Z */ - glColor3f(1, 1, 0); - glTexCoord2f(0, 0); glVertex3f(-1, -1, -1); - glTexCoord2f(1, 0); glVertex3f( 1, -1, -1); - glTexCoord2f(1, 1); glVertex3f( 1, 1, -1); - glTexCoord2f(0, 1); glVertex3f(-1, 1, -1); - - /* +Y */ - glColor3f(0, 0, 1); - glTexCoord2f(0, 0); glVertex3f(-1, -1, 1); - glTexCoord2f(1, 0); glVertex3f( 1, -1, 1); - glTexCoord2f(1, 1); glVertex3f( 1, 1, 1); - glTexCoord2f(0, 1); glVertex3f(-1, 1, 1); - - glEnd(); - - glPopMatrix(); -} - - -/* signal resize of given window */ -static void -resize(struct winthread *wt, int w, int h) -{ - wt->NewSize = GL_TRUE; - wt->WinWidth = w; - wt->WinHeight = h; - if (!Animate) - signal_redraw(); -} - - -/* - * We have an instance of this for each thread. - */ -static void -draw_loop(struct winthread *wt) -{ - while (!ExitFlag) { - - if (Locking) - pthread_mutex_lock(&Mutex); - - if (!wt->Initialized) { - eglMakeCurrent(wt->Display, wt->Surface, wt->Surface, wt->Context); - printf("xeglthreads: %d: GL_RENDERER = %s\n", wt->Index, - (char *) glGetString(GL_RENDERER)); - if (Texture /*&& wt->Index == 0*/) { - MakeNewTexture(wt); - } - wt->Initialized = GL_TRUE; - } - - if (Locking) - pthread_mutex_unlock(&Mutex); - - eglBindAPI(EGL_OPENGL_API); - if (eglGetCurrentContext() != wt->Context) { - printf("xeglthreads: current context %p != %p\n", - eglGetCurrentContext(), wt->Context); - } - - glEnable(GL_DEPTH_TEST); - - if (wt->NewSize) { - GLfloat w = (float) wt->WinWidth / (float) wt->WinHeight; - glViewport(0, 0, wt->WinWidth, wt->WinHeight); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-w, w, -1.0, 1.0, 1.5, 10); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0, 0, -2.5); - wt->NewSize = GL_FALSE; - } - - if (wt->MakeNewTexture) { - MakeNewTexture(wt); - wt->MakeNewTexture = GL_FALSE; - } - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotatef(wt->Angle, 0, 1, 0); - glRotatef(wt->Angle, 1, 0, 0); - glScalef(0.7, 0.7, 0.7); - draw_object(); - glPopMatrix(); - - if (Locking) - pthread_mutex_lock(&Mutex); - - eglSwapBuffers(wt->Display, wt->Surface); - - if (Locking) - pthread_mutex_unlock(&Mutex); - - if (Animate) { - usleep(5000); - } - else { - /* wait for signal to draw */ - pthread_mutex_lock(&CondMutex); - pthread_cond_wait(&CondVar, &CondMutex); - pthread_mutex_unlock(&CondMutex); - } - wt->Angle += 1.0; - } - eglMakeCurrent(wt->Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); -} - - -static void -keypress(XEvent *event, struct winthread *wt) -{ - char buf[100]; - KeySym keySym; - XComposeStatus stat; - - XLookupString(&event->xkey, buf, sizeof(buf), &keySym, &stat); - - switch (keySym) { - case XK_Escape: - /* tell all threads to exit */ - if (!Animate) { - signal_redraw(); - } - ExitFlag = GL_TRUE; - /*printf("exit draw_loop %d\n", wt->Index);*/ - return; - case XK_t: - case XK_T: - if (Texture) { - wt->MakeNewTexture = GL_TRUE; - if (!Animate) - signal_redraw(); - } - break; - case XK_a: - case XK_A: - Animate = !Animate; - if (Animate) /* yes, prev Animate state! */ - signal_redraw(); - break; - case XK_s: - case XK_S: - if (!Animate) - signal_redraw(); - break; - default: - ; /* nop */ - } -} - - -/* - * The main process thread runs this loop. - * Single display connection for all threads. - */ -static void -event_loop(Display *dpy) -{ - XEvent event; - int i; - - assert(!MultiDisplays); - - while (!ExitFlag) { - - if (Locking) { - while (1) { - int k; - pthread_mutex_lock(&Mutex); - k = XPending(dpy); - if (k) { - XNextEvent(dpy, &event); - pthread_mutex_unlock(&Mutex); - break; - } - pthread_mutex_unlock(&Mutex); - usleep(5000); - } - } - else { - XNextEvent(dpy, &event); - } - - switch (event.type) { - case ConfigureNotify: - /* Find winthread for this event's window */ - for (i = 0; i < NumWinThreads; i++) { - struct winthread *wt = &WinThreads[i]; - if (event.xconfigure.window == wt->Win) { - resize(wt, event.xconfigure.width, - event.xconfigure.height); - break; - } - } - break; - case KeyPress: - for (i = 0; i < NumWinThreads; i++) { - struct winthread *wt = &WinThreads[i]; - if (event.xkey.window == wt->Win) { - keypress(&event, wt); - break; - } - } - break; - default: - /*no-op*/ ; - } - } -} - - -/* - * Separate display connection for each thread. - */ -static void -event_loop_multi(void) -{ - XEvent event; - int w = 0; - - assert(MultiDisplays); - - while (!ExitFlag) { - struct winthread *wt = &WinThreads[w]; - if (XPending(wt->Dpy)) { - XNextEvent(wt->Dpy, &event); - switch (event.type) { - case ConfigureNotify: - resize(wt, event.xconfigure.width, event.xconfigure.height); - break; - case KeyPress: - keypress(&event, wt); - break; - default: - ; /* nop */ - } - } - w = (w + 1) % NumWinThreads; - usleep(5000); - } -} - - - -/* - * we'll call this once for each thread, before the threads are created. - */ -static void -create_window(struct winthread *wt, EGLContext shareCtx) -{ - Window win; - EGLContext ctx; - EGLSurface surf; - EGLint attribs[] = { EGL_RED_SIZE, 1, - EGL_GREEN_SIZE, 1, - EGL_BLUE_SIZE, 1, - EGL_DEPTH_SIZE, 1, - EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, - EGL_NONE }; - EGLConfig config; - EGLint num_configs; - EGLint vid; - int scrnum; - XSetWindowAttributes attr; - unsigned long mask; - Window root; - XVisualInfo *visinfo, visTemplate; - int num_visuals; - int width = 160, height = 160; - int xpos = (wt->Index % 8) * (width + 10); - int ypos = (wt->Index / 8) * (width + 20); - - scrnum = DefaultScreen(wt->Dpy); - root = RootWindow(wt->Dpy, scrnum); - - if (!eglChooseConfig(wt->Display, attribs, &config, 1, &num_configs) || - !num_configs) { - Error("Unable to choose an EGL config"); - } - - assert(config); - assert(num_configs > 0); - - if (!eglGetConfigAttrib(wt->Display, config, EGL_NATIVE_VISUAL_ID, &vid)) { - Error("Unable to get visual id of EGL config\n"); - } - - visTemplate.visualid = vid; - visinfo = XGetVisualInfo(wt->Dpy, VisualIDMask, - &visTemplate, &num_visuals); - if (!visinfo) { - Error("Unable to find RGB, Z, double-buffered visual"); - } - - /* window attributes */ - attr.background_pixel = 0; - attr.border_pixel = 0; - attr.colormap = XCreateColormap(wt->Dpy, root, visinfo->visual, AllocNone); - attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; - mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; - - win = XCreateWindow(wt->Dpy, root, xpos, ypos, width, height, - 0, visinfo->depth, InputOutput, - visinfo->visual, mask, &attr); - if (!win) { - Error("Couldn't create window"); - } - - XFree(visinfo); - - { - XSizeHints sizehints; - sizehints.x = xpos; - sizehints.y = ypos; - sizehints.width = width; - sizehints.height = height; - sizehints.flags = USSize | USPosition; - XSetNormalHints(wt->Dpy, win, &sizehints); - XSetStandardProperties(wt->Dpy, win, "xeglthreads", "xeglthreads", - None, (char **)NULL, 0, &sizehints); - } - - eglBindAPI(EGL_OPENGL_API); - - ctx = eglCreateContext(wt->Display, config, shareCtx, NULL); - if (!ctx) { - Error("Couldn't create EGL context"); - } - surf = eglCreateWindowSurface(wt->Display, config, win, NULL); - if (!surf) { - Error("Couldn't create EGL surface"); - } - - XMapWindow(wt->Dpy, win); - XSync(wt->Dpy, 0); - - /* save the info for this window/context */ - wt->Win = win; - wt->Context = ctx; - wt->Surface = surf; - wt->Angle = 0.0; - wt->WinWidth = width; - wt->WinHeight = height; - wt->NewSize = GL_TRUE; -} - - -/* - * Called by pthread_create() - */ -static void * -thread_function(void *p) -{ - struct winthread *wt = (struct winthread *) p; - draw_loop(wt); - return NULL; -} - - -/* - * called before exit to wait for all threads to finish - */ -static void -clean_up(void) -{ - int i; - - /* wait for threads to finish */ - for (i = 0; i < NumWinThreads; i++) { - pthread_join(WinThreads[i].Thread, NULL); - } - - for (i = 0; i < NumWinThreads; i++) { - eglDestroyContext(WinThreads[i].Display, WinThreads[i].Context); - XDestroyWindow(WinThreads[i].Dpy, WinThreads[i].Win); - } -} - - -static void -usage(void) -{ - printf("xeglthreads: test of EGL/GL thread safety (any key = exit)\n"); - printf("Usage:\n"); - printf(" xeglthreads [options]\n"); - printf("Options:\n"); - printf(" -display DISPLAYNAME Specify display string\n"); - printf(" -n NUMTHREADS Number of threads to create\n"); - printf(" -p Use a separate display connection for each thread\n"); - printf(" -l Use application-side locking\n"); - printf(" -t Enable texturing\n"); - printf("Keyboard:\n"); - printf(" Esc Exit\n"); - printf(" t Change texture image (requires -t option)\n"); - printf(" a Toggle animation\n"); - printf(" s Step rotation (when not animating)\n"); -} - - -int -main(int argc, char *argv[]) -{ - char *displayName = NULL; - int numThreads = 2; - Display *dpy = NULL; - EGLDisplay *egl_dpy = NULL; - int i; - Status threadStat; - - if (argc == 1) { - usage(); - } - else { - int i; - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-display") == 0 && i + 1 < argc) { - displayName = argv[i + 1]; - i++; - } - else if (strcmp(argv[i], "-p") == 0) { - MultiDisplays = 1; - } - else if (strcmp(argv[i], "-l") == 0) { - Locking = 1; - } - else if (strcmp(argv[i], "-t") == 0) { - Texture = 1; - } - else if (strcmp(argv[i], "-n") == 0 && i + 1 < argc) { - numThreads = atoi(argv[i + 1]); - if (numThreads < 1) - numThreads = 1; - else if (numThreads > MAX_WINTHREADS) - numThreads = MAX_WINTHREADS; - i++; - } - else { - usage(); - exit(1); - } - } - } - - if (Locking) - printf("xeglthreads: Using explicit locks around Xlib calls.\n"); - else - printf("xeglthreads: No explict locking.\n"); - - if (MultiDisplays) - printf("xeglthreads: Per-thread display connections.\n"); - else - printf("xeglthreads: Single display connection.\n"); - - /* - * VERY IMPORTANT: call XInitThreads() before any other Xlib functions. - */ - if (!MultiDisplays) { - if (!Locking) { - threadStat = XInitThreads(); - if (threadStat) { - printf("XInitThreads() returned %d (success)\n", - (int) threadStat); - } - else { - printf("XInitThreads() returned 0 " - "(failure- this program may fail)\n"); - } - } - - dpy = XOpenDisplay(displayName); - if (!dpy) { - fprintf(stderr, "Unable to open display %s\n", - XDisplayName(displayName)); - return -1; - } - egl_dpy = eglGetDisplay(dpy); - if (!egl_dpy) { - fprintf(stderr, "Unable to get EGL display\n"); - XCloseDisplay(dpy); - return -1; - } - if (!eglInitialize(egl_dpy, NULL, NULL)) { - fprintf(stderr, "Unable to initialize EGL display\n"); - return -1; - } - } - - pthread_mutex_init(&Mutex, NULL); - pthread_mutex_init(&CondMutex, NULL); - pthread_cond_init(&CondVar, NULL); - - printf("xeglthreads: creating windows\n"); - - NumWinThreads = numThreads; - - /* Create the EGL windows and contexts */ - for (i = 0; i < numThreads; i++) { - EGLContext share; - - if (MultiDisplays) { - WinThreads[i].Dpy = XOpenDisplay(displayName); - assert(WinThreads[i].Dpy); - WinThreads[i].Display = eglGetDisplay(WinThreads[i].Dpy); - assert(eglInitialize(WinThreads[i].Display, NULL, NULL)); - } - else { - WinThreads[i].Dpy = dpy; - WinThreads[i].Display = egl_dpy; - } - WinThreads[i].Index = i; - WinThreads[i].Initialized = GL_FALSE; - - share = (Texture && i > 0) ? WinThreads[0].Context : 0; - - create_window(&WinThreads[i], share); - } - - printf("xeglthreads: creating threads\n"); - - /* Create the threads */ - for (i = 0; i < numThreads; i++) { - pthread_create(&WinThreads[i].Thread, NULL, thread_function, - (void*) &WinThreads[i]); - printf("xeglthreads: Created thread %p\n", - (void *) WinThreads[i].Thread); - } - - if (MultiDisplays) - event_loop_multi(); - else - event_loop(dpy); - - clean_up(); - - if (MultiDisplays) { - for (i = 0; i < numThreads; i++) { - eglTerminate(WinThreads[i].Display); - XCloseDisplay(WinThreads[i].Dpy); - } - } - else { - eglTerminate(egl_dpy); - XCloseDisplay(dpy); - } - - return 0; -} - - -#else /* PTHREADS */ - - -#include <stdio.h> - -int -main(int argc, char *argv[]) -{ - printf("Sorry, this program wasn't compiled with PTHREADS defined.\n"); - return 0; -} - - -#endif /* PTHREADS */ |