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-rw-r--r--progs/egl/opengl/xeglgears.c954
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 0000000000..a6a977d9ff
--- /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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 18:57:28 +0000