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-rw-r--r--progs/egl/xeglgears.c399
1 files changed, 289 insertions, 110 deletions
diff --git a/progs/egl/xeglgears.c b/progs/egl/xeglgears.c
index 72ed0052832..614a6256037 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 <displayname> 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;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 22:37:01 +0000