progs/egl: Move demos a level deeper.

Move the demos to "opengl" subdirectory.

1 files changed, 954 insertions, 0 deletions

diff --git a/progs/egl/opengl/xeglgears.c b/progs/egl/opengl/xeglgears.c
new file mode 100644
index 00000000000..a6a977d9fff
--- /dev/null
+++ b/progs/egl/opengl/xeglgears.c
@@ -0,0 +1,954 @@
+/*
+ * 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.
+ */
+
+/*
+ * Ported to X/EGL/GLES.   XXX Actually, uses full OpenGL ATM.
+ * Brian Paul
+ * 30 May 2008
+ */
+
+/*
+ * Command line options:
+ *    -info      print GL implementation information
+ *
+ */
+
+
+#define GL_GLEXT_PROTOTYPES
+#define EGL_EGLEXT_PROTOTYPES
+
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GL/gl.h>
+#include <EGL/egl.h>
+
+#include <EGL/eglext.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;
+
+/*
+ *
+ *  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
+draw(void)
+{
+   glClearColor(0.2, 0.2, 0.2, 0.2);
+   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)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-ar, ar, -1, 1, 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);
+}
+
+
+struct egl_manager {
+   EGLNativeDisplayType xdpy;
+   EGLNativeWindowType xwin;
+   EGLNativePixmapType xpix;
+
+   EGLDisplay dpy;
+   EGLConfig conf;
+   EGLContext ctx;
+
+   EGLSurface win;
+   EGLSurface pix;
+   EGLSurface pbuf;
+   EGLImageKHR image;
+
+   EGLBoolean verbose;
+   EGLint major, minor;
+
+   GC gc;
+   GLuint fbo;
+};
+
+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 (!eglInitialize(eman->dpy, &eman->major, &eman->minor)) {
+      printf("eglInitialize() failed\n");
+      free(eman);
+      return NULL;
+   }
+
+   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;
+   }
+
+   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 */
+   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;
+
+   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  = w;
+      sizehints.height = h;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(eman->xdpy, eman->xwin, &sizehints);
+      XSetStandardProperties(eman->xdpy, eman->xwin, name, name,
+                             None, (char **)NULL, 0, &sizehints);
+   }
+
+   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;
+      }
+   }
+
+   eman->gc = XCreateGC(eman->xdpy, eman->xwin, 0, NULL);
+
+   XMapWindow(eman->xdpy, eman->xwin);
+
+   return EGL_TRUE;
+}
+
+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;
+      }
+   }
+
+   return EGL_TRUE;
+}
+
+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;
+   }
+
+   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);
+
+   XFreeGC(eman->xdpy, eman->gc);
+
+   free(eman);
+}
+
+enum {
+   GEARS_WINDOW,
+   GEARS_PIXMAP,
+   GEARS_PIXMAP_TEXTURE,
+   GEARS_PBUFFER,
+   GEARS_PBUFFER_TEXTURE,
+   GEARS_RENDERBUFFER
+};
+
+static void
+texture_gears(struct egl_manager *eman, int surface_type)
+{
+   static const GLint verts[12] =
+      { -5, -6, -10,  5, -6, -10,  -5, 4, 10,  5, 4, 10 };
+   static const GLint tex_coords[8] = { 0, 0,  1, 0,  0, 1,  1, 1 };
+
+   eglMakeCurrent(eman->dpy, eman->win, eman->win, eman->ctx);
+
+   glClearColor(0, 0, 0, 0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glEnable(GL_TEXTURE_2D);
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+   glVertexPointer(3, GL_INT, 0, verts);
+   glTexCoordPointer(2, GL_INT, 0, tex_coords);
+
+   if (surface_type == GEARS_PBUFFER_TEXTURE)
+      eglBindTexImage(eman->dpy, eman->pbuf, EGL_BACK_BUFFER);
+
+   glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+   glDisableClientState(GL_VERTEX_ARRAY);
+   glDisableClientState(GL_COLOR_ARRAY);
+   glDisable(GL_TEXTURE_2D);
+
+   if (surface_type == GEARS_PBUFFER_TEXTURE)
+      eglReleaseTexImage(eman->dpy, eman->pbuf, EGL_BACK_BUFFER);
+
+   eglSwapBuffers(eman->dpy, eman->win); 
+}
+
+static void
+copy_gears(struct egl_manager *eman,
+	   EGLint tile_w, EGLint tile_h, EGLint w, EGLint h)
+{
+   int x, y;
+
+   eglWaitClient();
+
+   for (x = 0; x < w; x += tile_w) {
+      for (y = 0; y < h; y += tile_h) {
+
+	 XCopyArea(eman->xdpy, eman->xpix, eman->xwin, eman->gc,
+		   0, 0, tile_w, tile_h, x, y);
+      }
+   }
+}
+
+static void
+event_loop(struct egl_manager *eman, EGLint surface_type, EGLint w, EGLint h)
+{
+   int window_w = w, window_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(eman->xdpy) > 0) {
+         XEvent event;
+         XNextEvent(eman->xdpy, &event);
+         switch (event.type) {
+         case Expose:
+            /* we'll redraw below */
+            break;
+         case ConfigureNotify:
+            window_w = event.xconfigure.width;
+            window_h = event.xconfigure.height;
+            if (surface_type == EGL_WINDOW_BIT)
+               reshape(window_w, window_h);
+            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;
+
+         switch (surface_type) {
+         case GEARS_WINDOW:
+	    draw();
+            eglSwapBuffers(eman->dpy, eman->win);
+            break;
+
+	 case GEARS_PBUFFER:
+	    draw();
+	    if (!eglCopyBuffers(eman->dpy, eman->pbuf, eman->xpix))
+	       break;
+	    copy_gears(eman, w, h, window_w, window_h);
+	    break;
+
+	 case GEARS_PBUFFER_TEXTURE:
+            eglMakeCurrent(eman->dpy, eman->pbuf, eman->pbuf, eman->ctx);
+	    draw();
+	    texture_gears(eman, surface_type);
+	    break;
+
+	 case GEARS_PIXMAP:
+	    draw();
+	    copy_gears(eman, w, h, window_w, window_h);
+	    break;
+
+	 case GEARS_PIXMAP_TEXTURE:
+            eglMakeCurrent(eman->dpy, eman->pix, eman->pix, eman->ctx);
+	    draw();
+	    texture_gears(eman, surface_type);
+	    break;
+
+	 case GEARS_RENDERBUFFER:
+	    glBindFramebuffer(GL_FRAMEBUFFER_EXT, eman->fbo);
+	    draw();
+	    glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
+	    texture_gears(eman, surface_type);
+	    break;
+	 }
+
+         frames++;
+
+         if (tRate0 < 0.0)
+            tRate0 = t;
+         if (t - tRate0 >= 5.0) {
+            GLfloat seconds = t - tRate0;
+            GLfloat fps = frames / seconds;
+            printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
+                   fps);
+            tRate0 = t;
+            frames = 0;
+         }
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   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("  -pixmap-texture         use pixmap surface and texture using EGLImage\n");
+   printf("  -pbuffer                use pbuffer surface and eglCopyBuffers\n");
+   printf("  -pbuffer-texture        use pbuffer surface and eglBindTexImage\n");
+   printf("  -renderbuffer           renderbuffer as EGLImage and bind as texture from\n");
+}
+ 
+static const char *names[] = {
+   "window",
+   "pixmap",
+   "pixmap_texture",
+   "pbuffer",
+   "pbuffer_texture",
+   "renderbuffer"
+};
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 300, winHeight = 300;
+   Display *x_dpy;
+   char *dpyName = NULL;
+   struct egl_manager *eman;
+   EGLint attribs[] = {
+      EGL_SURFACE_TYPE, EGL_WINDOW_BIT, /* may be changed 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 = GEARS_WINDOW;
+   GLboolean printInfo = GL_FALSE;
+   GLboolean fullscreen = GL_FALSE;
+   EGLBoolean ret;
+   GLuint texture, color_rb, depth_rb;
+   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 if (strcmp(argv[i], "-fullscreen") == 0) {
+         fullscreen = GL_TRUE;
+      }
+      else if (strcmp(argv[i], "-pixmap") == 0) {
+         surface_type = GEARS_PIXMAP;
+	 attribs[1] = EGL_PIXMAP_BIT;
+      }
+      else if (strcmp(argv[i], "-pixmap-texture") == 0) {
+         surface_type = GEARS_PIXMAP_TEXTURE;
+	 attribs[1] = EGL_PIXMAP_BIT;
+      }
+      else if (strcmp(argv[i], "-pbuffer") == 0) {
+         surface_type = GEARS_PBUFFER;
+	 attribs[1] = EGL_PBUFFER_BIT;
+      }
+      else if (strcmp(argv[i], "-pbuffer-texture") == 0) {
+         surface_type = GEARS_PBUFFER_TEXTURE;
+	 attribs[1] = EGL_PBUFFER_BIT;
+      }
+      else if (strcmp(argv[i], "-renderbuffer") == 0) {
+         surface_type = GEARS_RENDERBUFFER;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   eglBindAPI(EGL_OPENGL_API);
+
+   eman = egl_manager_new(x_dpy, attribs, printInfo);
+   if (!eman) {
+      XCloseDisplay(x_dpy);
+      return -1;
+   }
+
+   snprintf(win_title, sizeof(win_title),
+	    "xeglgears (%s)", names[surface_type]);
+
+   ret = egl_manager_create_window(eman, win_title, winWidth, winHeight,
+				   EGL_TRUE, fullscreen, NULL);
+   if (!ret)
+      return -1;
+
+   /* create surface(s) */
+   switch (surface_type) {
+   case GEARS_WINDOW:
+      if (ret)
+         ret = eglMakeCurrent(eman->dpy, eman->win, eman->win, eman->ctx);
+      break;
+   case GEARS_PIXMAP:
+   case GEARS_PIXMAP_TEXTURE:
+      ret = egl_manager_create_pixmap(eman, eman->xwin, EGL_TRUE, NULL);
+      if (surface_type == GEARS_PIXMAP_TEXTURE)
+	 eman->image = eglCreateImageKHR (eman->dpy, eman->ctx,
+					  EGL_NATIVE_PIXMAP_KHR,
+					  (EGLClientBuffer) eman->xpix, NULL);
+      if (ret)
+         ret = eglMakeCurrent(eman->dpy, eman->pix, eman->pix, eman->ctx);
+      break;
+   case GEARS_PBUFFER:
+   case GEARS_PBUFFER_TEXTURE:
+      {
+         EGLint pbuf_attribs[] = {
+            EGL_WIDTH, winWidth,
+            EGL_HEIGHT, winHeight,
+	    EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGB,
+	    EGL_TEXTURE_TARGET, EGL_TEXTURE_2D,
+            EGL_NONE
+         };
+         ret = (egl_manager_create_pixmap(eman, eman->xwin,
+					  EGL_TRUE, NULL) &&
+                egl_manager_create_pbuffer(eman, pbuf_attribs));
+         if (ret)
+            ret = eglMakeCurrent(eman->dpy, eman->pbuf, eman->pbuf, eman->ctx);
+      }
+      break;
+
+
+   case GEARS_RENDERBUFFER:
+      ret = eglMakeCurrent(eman->dpy, eman->win, eman->win, eman->ctx);
+      if (ret == EGL_FALSE)
+	 printf("failed to make context current\n");
+
+      glGenFramebuffers(1, &eman->fbo);
+      glBindFramebuffer(GL_FRAMEBUFFER_EXT, eman->fbo);
+      
+      glGenRenderbuffers(1, &color_rb);
+      glBindRenderbuffer(GL_RENDERBUFFER_EXT, color_rb);
+      glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_RGBA, winWidth, winHeight);
+      glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+				   GL_COLOR_ATTACHMENT0_EXT,
+				   GL_RENDERBUFFER_EXT,
+				   color_rb);
+
+      eman->image = eglCreateImageKHR(eman->dpy, eman->ctx,
+				      EGL_GL_RENDERBUFFER_KHR,
+				      (EGLClientBuffer) color_rb, NULL);
+
+      glGenRenderbuffers(1, &depth_rb);
+      glBindRenderbuffer(GL_RENDERBUFFER_EXT, depth_rb);
+      glRenderbufferStorage(GL_RENDERBUFFER_EXT,
+			    GL_DEPTH_COMPONENT, winWidth, winHeight);
+      glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+				   GL_DEPTH_ATTACHMENT_EXT,
+				   GL_RENDERBUFFER_EXT,
+				   depth_rb);
+
+      if (glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE) {
+	 printf("framebuffer not complete\n");
+	 exit(1);
+      }
+
+      break;
+
+   default:
+      ret = EGL_FALSE;
+      break;
+   }
+
+   switch (surface_type) {
+   case GEARS_PIXMAP_TEXTURE:
+   case GEARS_RENDERBUFFER:
+	   glGenTextures(1, &texture);
+   	   glBindTexture(GL_TEXTURE_2D, texture);
+	   glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, eman->image);
+	   break;
+   case GEARS_PBUFFER_TEXTURE:
+	   glGenTextures(1, &texture);
+   	   glBindTexture(GL_TEXTURE_2D, texture);
+	   break;
+   }
+
+   if (!ret) {
+      egl_manager_destroy(eman);
+      XCloseDisplay(x_dpy);
+      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));
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(eman, surface_type, winWidth, winHeight);
+
+   glDeleteLists(gear1, 1);
+   glDeleteLists(gear2, 1);
+   glDeleteLists(gear3, 1);
+
+   egl_manager_destroy(eman);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}