From 4e2bdd66352cf9a2e951bb21151edee25c8c0a8c Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Sun, 18 Oct 2009 13:15:30 +0800 Subject: progs/egl: Add support for pixmap and pbuffer surface to xeglgears. Signed-off-by: Chia-I Wu --- progs/egl/xeglgears.c | 399 ++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 289 insertions(+), 110 deletions(-) diff --git a/progs/egl/xeglgears.c b/progs/egl/xeglgears.c index 72ed005283..614a625603 100644 --- a/progs/egl/xeglgears.c +++ b/progs/egl/xeglgears.c @@ -95,9 +95,6 @@ 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 GLboolean fullscreen = GL_FALSE; /* Create a single fullscreen window */ - - /* * * Draw a gear wheel. You'll probably want to call this function when @@ -327,122 +324,235 @@ init(void) } -/* - * Create an RGB, double-buffered X window. - * Return the window and context handles. - */ -static void -make_x_window(Display *x_dpy, EGLDisplay egl_dpy, - const char *name, - int x, int y, int width, int height, - Window *winRet, - EGLContext *ctxRet, - EGLSurface *surfRet) -{ - static const EGLint attribs[] = { - EGL_RED_SIZE, 1, - EGL_GREEN_SIZE, 1, - EGL_BLUE_SIZE, 1, - /*EGL_DOUBLEBUFFER,*/ - EGL_DEPTH_SIZE, 1, - EGL_NONE - }; +struct egl_manager { + EGLNativeDisplayType xdpy; + EGLNativeWindowType xwin; + EGLNativePixmapType xpix; - int scrnum; - XSetWindowAttributes attr; - unsigned long mask; - Window root; - Window win; - XVisualInfo *visInfo, visTemplate; - int num_visuals; + EGLDisplay dpy; + EGLConfig conf; EGLContext ctx; - EGLConfig config; - EGLint num_configs, vid; - scrnum = DefaultScreen( x_dpy ); - root = RootWindow( x_dpy, scrnum ); + EGLSurface win; + EGLSurface pix; + EGLSurface pbuf; - if (fullscreen) { - x = 0; y = 0; - width = DisplayWidth( x_dpy, scrnum ); - height = DisplayHeight( x_dpy, scrnum ); + EGLBoolean verbose; + EGLint major, minor; +}; + +static struct egl_manager * +egl_manager_new(EGLNativeDisplayType xdpy, const EGLint *attrib_list, + EGLBoolean verbose) +{ + struct egl_manager *eman; + const char *ver; + EGLint num_conf; + + eman = calloc(1, sizeof(*eman)); + if (!eman) + return NULL; + + eman->verbose = verbose; + eman->xdpy = xdpy; + + eman->dpy = eglGetDisplay(eman->xdpy); + if (eman->dpy == EGL_NO_DISPLAY) { + printf("eglGetDisplay() failed\n"); + free(eman); + return NULL; } - if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) { - printf("Error: couldn't get an EGL visual config\n"); - exit(1); + if (!eglInitialize(eman->dpy, &eman->major, &eman->minor)) { + printf("eglInitialize() failed\n"); + free(eman); + return NULL; } - if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) { - printf("Error: eglGetConfigAttrib() failed\n"); - exit(1); + ver = eglQueryString(eman->dpy, EGL_VERSION); + printf("EGL_VERSION = %s\n", ver); + + if (!eglChooseConfig(eman->dpy, attrib_list, &eman->conf, 1, &num_conf) || + !num_conf) { + printf("eglChooseConfig() failed\n"); + eglTerminate(eman->dpy); + free(eman); + return NULL; } - /* The X window visual must match the EGL config */ - visTemplate.visualid = vid; - visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals); - if (!visInfo) { - printf("Error: couldn't get X visual\n"); - exit(1); + eman->ctx = eglCreateContext(eman->dpy, eman->conf, EGL_NO_CONTEXT, NULL); + if (eman->ctx == EGL_NO_CONTEXT) { + printf("eglCreateContext() failed\n"); + eglTerminate(eman->dpy); + free(eman); + return NULL; + } + + return eman; +} + +static EGLBoolean +egl_manager_create_window(struct egl_manager *eman, const char *name, + EGLint w, EGLint h, EGLBoolean need_surface, + EGLBoolean fullscreen, const EGLint *attrib_list) +{ + XVisualInfo vinfo_template, *vinfo = NULL; + EGLint val, num_vinfo; + Window root; + XSetWindowAttributes attrs; + unsigned long mask; + EGLint x = 0, y = 0; + + if (!eglGetConfigAttrib(eman->dpy, eman->conf, + EGL_NATIVE_VISUAL_ID, &val)) { + printf("eglGetConfigAttrib() failed\n"); + return EGL_FALSE; + } + if (val) { + vinfo_template.visualid = (VisualID) val; + vinfo = XGetVisualInfo(eman->xdpy, VisualIDMask, &vinfo_template, &num_vinfo); + } + /* try harder if window surface is not needed */ + if (!vinfo && !need_surface && + eglGetConfigAttrib(eman->dpy, eman->conf, EGL_BUFFER_SIZE, &val)) { + if (val == 32) + val = 24; + vinfo_template.depth = val; + vinfo = XGetVisualInfo(eman->xdpy, VisualDepthMask, &vinfo_template, &num_vinfo); + } + + if (!vinfo) { + printf("XGetVisualInfo() failed\n"); + return EGL_FALSE; + } + + root = DefaultRootWindow(eman->xdpy); + if (fullscreen) { + x = y = 0; + w = DisplayWidth(eman->xdpy, DefaultScreen(eman->xdpy)); + h = DisplayHeight(eman->xdpy, DefaultScreen(eman->xdpy)); } /* window attributes */ - attr.background_pixel = 0; - attr.border_pixel = 0; - attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone); - attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; - attr.override_redirect = fullscreen; + attrs.background_pixel = 0; + attrs.border_pixel = 0; + attrs.colormap = XCreateColormap(eman->xdpy, root, vinfo->visual, AllocNone); + attrs.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; + attrs.override_redirect = fullscreen; mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect; - win = XCreateWindow( x_dpy, root, 0, 0, width, height, - 0, visInfo->depth, InputOutput, - visInfo->visual, mask, &attr ); + eman->xwin = XCreateWindow(eman->xdpy, root, x, y, w, h, + 0, vinfo->depth, InputOutput, + vinfo->visual, mask, &attrs); + XFree(vinfo); /* set hints and properties */ { XSizeHints sizehints; sizehints.x = x; sizehints.y = y; - sizehints.width = width; - sizehints.height = height; + sizehints.width = w; + sizehints.height = h; sizehints.flags = USSize | USPosition; - XSetNormalHints(x_dpy, win, &sizehints); - XSetStandardProperties(x_dpy, win, name, name, - None, (char **)NULL, 0, &sizehints); + XSetNormalHints(eman->xdpy, eman->xwin, &sizehints); + XSetStandardProperties(eman->xdpy, eman->xwin, name, name, + None, (char **)NULL, 0, &sizehints); } - eglBindAPI(EGL_OPENGL_API); + if (need_surface) { + eman->win = eglCreateWindowSurface(eman->dpy, eman->conf, + eman->xwin, attrib_list); + if (eman->win == EGL_NO_SURFACE) { + printf("eglCreateWindowSurface() failed\n"); + XDestroyWindow(eman->xdpy, eman->xwin); + eman->xwin = None; + return EGL_FALSE; + } + } + + XMapWindow(eman->xdpy, eman->xwin); + + return EGL_TRUE; +} - ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL ); - if (!ctx) { - printf("Error: glXCreateContext failed\n"); - exit(1); +static EGLBoolean +egl_manager_create_pixmap(struct egl_manager *eman, EGLNativeWindowType xwin, + EGLBoolean need_surface, const EGLint *attrib_list) +{ + XWindowAttributes attrs; + + if (!XGetWindowAttributes(eman->xdpy, xwin, &attrs)) { + printf("XGetWindowAttributes() failed\n"); + return EGL_FALSE; + } + + eman->xpix = XCreatePixmap(eman->xdpy, xwin, + attrs.width, attrs.height, attrs.depth); + + if (need_surface) { + eman->pix = eglCreatePixmapSurface(eman->dpy, eman->conf, + eman->xpix, attrib_list); + if (eman->pix == EGL_NO_SURFACE) { + printf("eglCreatePixmapSurface() failed\n"); + XFreePixmap(eman->xdpy, eman->xpix); + eman->xpix = None; + return EGL_FALSE; + } } - *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL); + return EGL_TRUE; +} - XFree(visInfo); +static EGLBoolean +egl_manager_create_pbuffer(struct egl_manager *eman, const EGLint *attrib_list) +{ + eman->pbuf = eglCreatePbufferSurface(eman->dpy, eman->conf, attrib_list); + if (eman->pbuf == EGL_NO_SURFACE) { + printf("eglCreatePbufferSurface() failed\n"); + return EGL_FALSE; + } - *winRet = win; - *ctxRet = ctx; + return EGL_TRUE; } +static void +egl_manager_destroy(struct egl_manager *eman) +{ + eglMakeCurrent(eman->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); + eglTerminate(eman->dpy); + + if (eman->xwin != None) + XDestroyWindow(eman->xdpy, eman->xwin); + if (eman->xpix != None) + XFreePixmap(eman->xdpy, eman->xpix); + + free(eman); +} static void -event_loop(Display *dpy, Window win, - EGLDisplay egl_dpy, EGLSurface egl_surf) +event_loop(struct egl_manager *eman, EGLint surface_type, EGLint w, EGLint h) { + GC gc = XCreateGC(eman->xdpy, eman->xwin, 0, NULL); + EGLint orig_w = w, orig_h = h; + + if (surface_type == EGL_PBUFFER_BIT) + printf("there will be no screen update if " + "eglCopyBuffers() is not implemented\n"); + while (1) { - while (XPending(dpy) > 0) { + while (XPending(eman->xdpy) > 0) { XEvent event; - XNextEvent(dpy, &event); + XNextEvent(eman->xdpy, &event); switch (event.type) { - case Expose: + case Expose: /* we'll redraw below */ - break; - case ConfigureNotify: - reshape(event.xconfigure.width, event.xconfigure.height); - break; + break; + case ConfigureNotify: + w = event.xconfigure.width; + h = event.xconfigure.height; + if (surface_type == EGL_WINDOW_BIT) + reshape(w, h); + break; case KeyPress: { char buffer[10]; @@ -476,6 +586,7 @@ event_loop(Display *dpy, Window win, static int frames = 0; static double tRot0 = -1.0, tRate0 = -1.0; double dt, t = current_time(); + int x, y; if (tRot0 < 0.0) tRot0 = t; dt = t - tRot0; @@ -487,7 +598,25 @@ event_loop(Display *dpy, Window win, angle -= 3600.0; draw(); - eglSwapBuffers(egl_dpy, egl_surf); + switch (surface_type) { + case EGL_WINDOW_BIT: + eglSwapBuffers(eman->dpy, eman->win); + break; + case EGL_PBUFFER_BIT: + eglWaitClient(); + if (!eglCopyBuffers(eman->xdpy, eman->pbuf, eman->xpix)) + break; + /* fall through */ + case EGL_PIXMAP_BIT: + eglWaitClient(); + for (x = 0; x < w; x += orig_w) { + for (y = 0; y < h; y += orig_h) { + XCopyArea(eman->xdpy, eman->xpix, eman->xwin, gc, + 0, 0, orig_w, orig_h, x, y); + } + } + break; + } frames++; @@ -503,6 +632,8 @@ event_loop(Display *dpy, Window win, } } } + + XFreeGC(eman->xdpy, gc); } @@ -513,6 +644,8 @@ usage(void) printf(" -display set the display to run on\n"); printf(" -fullscreen run in fullscreen mode\n"); printf(" -info display OpenGL renderer info\n"); + printf(" -pixmap use pixmap surface\n"); + printf(" -pbuffer use pbuffer surface\n"); } @@ -521,15 +654,23 @@ main(int argc, char *argv[]) { const int winWidth = 300, winHeight = 300; Display *x_dpy; - Window win; - EGLSurface egl_surf; - EGLContext egl_ctx; - EGLDisplay egl_dpy; char *dpyName = NULL; + struct egl_manager *eman; + EGLint attribs[] = { + EGL_SURFACE_TYPE, 0, /* filled later */ + EGL_RED_SIZE, 1, + EGL_GREEN_SIZE, 1, + EGL_BLUE_SIZE, 1, + EGL_DEPTH_SIZE, 1, + EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, + EGL_NONE + }; + char win_title[] = "xeglgears (window/pixmap/pbuffer)"; + EGLint surface_type = EGL_WINDOW_BIT; GLboolean printInfo = GL_FALSE; - EGLint egl_major, egl_minor; + GLboolean fullscreen = GL_FALSE; + EGLBoolean ret; int i; - const char *s; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-display") == 0) { @@ -542,12 +683,21 @@ main(int argc, char *argv[]) else if (strcmp(argv[i], "-fullscreen") == 0) { fullscreen = GL_TRUE; } + else if (strcmp(argv[i], "-pixmap") == 0) { + surface_type = EGL_PIXMAP_BIT; + } + else if (strcmp(argv[i], "-pbuffer") == 0) { + surface_type = EGL_PBUFFER_BIT; + } else { usage(); return -1; } } + /* set surface type */ + attribs[1] = surface_type; + x_dpy = XOpenDisplay(dpyName); if (!x_dpy) { printf("Error: couldn't open display %s\n", @@ -555,26 +705,60 @@ main(int argc, char *argv[]) return -1; } - egl_dpy = eglGetDisplay(x_dpy); - if (!egl_dpy) { - printf("Error: eglGetDisplay() failed\n"); - return -1; - } + eglBindAPI(EGL_OPENGL_API); - if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) { - printf("Error: eglInitialize() failed\n"); + eman = egl_manager_new(x_dpy, attribs, printInfo); + if (!eman) { + XCloseDisplay(x_dpy); return -1; } - s = eglQueryString(egl_dpy, EGL_VERSION); - printf("EGL_VERSION = %s\n", s); - - make_x_window(x_dpy, egl_dpy, - "glxgears", 0, 0, winWidth, winHeight, - &win, &egl_ctx, &egl_surf); + snprintf(win_title, sizeof(win_title), "xeglgears (%s)", + (surface_type == EGL_WINDOW_BIT) ? "window" : + (surface_type == EGL_PIXMAP_BIT) ? "pixmap" : "pbuffer"); + + /* create surface(s) */ + switch (surface_type) { + case EGL_WINDOW_BIT: + ret = egl_manager_create_window(eman, win_title, winWidth, winHeight, + EGL_TRUE, fullscreen, NULL); + if (ret) + ret = eglMakeCurrent(eman->dpy, eman->win, eman->win, eman->ctx); + break; + case EGL_PIXMAP_BIT: + ret = (egl_manager_create_window(eman, win_title, winWidth, winHeight, + EGL_FALSE, fullscreen, NULL) && + egl_manager_create_pixmap(eman, eman->xwin, + EGL_TRUE, NULL)); + if (ret) + ret = eglMakeCurrent(eman->dpy, eman->pix, eman->pix, eman->ctx); + break; + case EGL_PBUFFER_BIT: + { + EGLint pbuf_attribs[] = { + EGL_WIDTH, winWidth, + EGL_HEIGHT, winHeight, + EGL_NONE + }; + ret = (egl_manager_create_window(eman, win_title, winWidth, winHeight, + EGL_FALSE, fullscreen, NULL) && + egl_manager_create_pixmap(eman, eman->xwin, + EGL_FALSE, NULL) && + egl_manager_create_pbuffer(eman, pbuf_attribs)); + if (ret) + ret = eglMakeCurrent(eman->dpy, eman->pbuf, eman->pbuf, eman->ctx); + } + break; + default: + ret = EGL_FALSE; + break; + } - XMapWindow(x_dpy, win); - eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx); + if (!ret) { + egl_manager_destroy(eman); + XCloseDisplay(x_dpy); + return -1; + } if (printInfo) { printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); @@ -590,18 +774,13 @@ main(int argc, char *argv[]) */ reshape(winWidth, winHeight); - event_loop(x_dpy, win, egl_dpy, egl_surf); + event_loop(eman, surface_type, winWidth, winHeight); glDeleteLists(gear1, 1); glDeleteLists(gear2, 1); glDeleteLists(gear3, 1); - eglDestroyContext(egl_dpy, egl_ctx); - eglDestroySurface(egl_dpy, egl_surf); - eglTerminate(egl_dpy); - - - XDestroyWindow(x_dpy, win); + egl_manager_destroy(eman); XCloseDisplay(x_dpy); return 0; -- cgit v1.2.3