C++ EGL_DLSYM函數代碼示例

EGLSurface eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
		EGLNativePixmapType pixmap,
		const EGLint *attrib_list)
{
	EGL_DLSYM(&_eglCreatePixmapSurface, "eglCreatePixmapSurface");
	return (*_eglCreatePixmapSurface)(dpy, config, pixmap, attrib_list);
}

EGLSurface eglCreatePbufferFromClientBuffer(
		EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
		EGLConfig config, const EGLint *attrib_list)
{
	EGL_DLSYM(&_eglCreatePbufferFromClientBuffer, "eglCreatePbufferFromClientBuffer");
	return (*_eglCreatePbufferFromClientBuffer)(dpy, buftype, buffer, config, attrib_list);
}

EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
		EGLint attribute, EGLint *value)
{
	EGL_DLSYM(&_eglGetConfigAttrib, "eglGetConfigAttrib");
	return (*_eglGetConfigAttrib)(dpy, config,
			attribute, value);
}

EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
				  EGLNativeWindowType win,
				  const EGLint * attrib_list)
{
	EGL_DEBUG("%s: %s\n", __FILE__, __func__);
	EGL_DLSYM(eglCreateWindowSurface);
	return _eglCreateWindowSurface(dpy, config, win, attrib_list);
}

EGLSurface eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
				  EGLNativePixmapType pixmap,
				  const EGLint * attrib_list)
{
	EGL_DEBUG("%s: %s\n", __FILE__, __func__);
	EGL_DLSYM(eglCreatePixmapSurface);
	return _eglCreatePixmapSurface(dpy, config, pixmap, attrib_list);
}

EGLBoolean eglTerminate(EGLDisplay dpy)
{
	EGL_DLSYM(&_eglTerminate, "eglTerminate");

	struct _EGLDisplay *display = hybris_egl_display_get_mapping(dpy);
	ws_Terminate(display);
	return (*_eglTerminate)(dpy);
}

EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
			    EGLContext share_context,
			    const EGLint * attrib_list)
{
	EGL_DEBUG("%s: %s\n", __FILE__, __func__);
	EGL_DLSYM(eglCreateContext);
	return _eglCreateContext(dpy, config, share_context, attrib_list);
}

EGLBoolean eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list,
		EGLConfig *configs, EGLint config_size,
		EGLint *num_config)
{
	EGL_DLSYM(&_eglChooseConfig, "eglChooseConfig");
	return (*_eglChooseConfig)(dpy, attrib_list,
			configs, config_size,
			num_config);
}

EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
{
	EGLBoolean ret; 
	HYBRIS_TRACE_BEGIN("hybris-egl", "eglSwapBuffers", "");
	EGL_DLSYM(&_eglSwapBuffers, "eglSwapBuffers");
	ret = (*_eglSwapBuffers)(dpy, surface);
	HYBRIS_TRACE_END("hybris-egl", "eglSwapBuffers", "");
	return ret;
}

EGLBoolean eglChooseConfig(EGLDisplay dpy, const EGLint * attrib_list,
			   EGLConfig * configs, EGLint config_size,
			   EGLint * num_config)
{
	EGL_DEBUG("%s: %s\n", __FILE__, __func__);
	EGL_DLSYM(eglChooseConfig);
	return _eglChooseConfig(dpy, attrib_list,
			       configs, config_size, num_config);
}

EGLSurface eglCreatePbufferFromClientBuffer(EGLDisplay dpy, EGLenum buftype,
					    EGLClientBuffer buffer,
					    EGLConfig config,
					    const EGLint * attrib_list)
{
	EGL_DEBUG("%s: %s\n", __FILE__, __func__);
	EGL_DLSYM(eglCreatePbufferFromClientBuffer);
	return _eglCreatePbufferFromClientBuffer(dpy, buftype, buffer,
						config, attrib_list);
}

EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
		EGLNativeWindowType win,
		const EGLint *attrib_list)
{
	EGL_DLSYM(&_eglCreateWindowSurface, "eglCreateWindowSurface");

	win = ws_CreateWindow(win,  _egldisplay2NDT(dpy));
	
	assert(((struct ANativeWindowBuffer *) win)->common.magic == ANDROID_NATIVE_WINDOW_MAGIC);

	EGLSurface result = (*_eglCreateWindowSurface)(dpy, config, win, attrib_list);
	egl_helper_push_mapping(result, win);
	return result;
}

EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
{
	EGLBoolean ret;
	EGLSurface surface;
	EGLNativeWindowType win;
	HYBRIS_TRACE_BEGIN("hybris-egl", "eglSwapInterval", "=%d", interval);

	/* Some egl implementations don't pass through the setSwapInterval
	 * call.  Since we may support various swap intervals internally, we'll
	 * call it anyway and then give the wrapped egl implementation a chance
	 * to chage it. */
	EGL_DLSYM(&_eglGetCurrentSurface, "eglGetCurrentSurface");
	surface = (*_eglGetCurrentSurface)(EGL_DRAW);
	if (egl_helper_has_mapping(surface))
	    ws_setSwapInterval(dpy, egl_helper_get_mapping(surface), interval);

	HYBRIS_TRACE_BEGIN("native-egl", "eglSwapInterval", "=%d", interval);
	EGL_DLSYM(&_eglSwapInterval, "eglSwapInterval");
	ret = (*_eglSwapInterval)(dpy, interval);
	HYBRIS_TRACE_END("native-egl", "eglSwapInterval", "");
	HYBRIS_TRACE_END("hybris-egl", "eglSwapInterval", "");
	return ret;
}

EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
{
	EGL_DLSYM(&_eglDestroySurface, "eglDestroySurface");
	EGLBoolean result = (*_eglDestroySurface)(dpy, surface);

	/**
         * If the surface was created via eglCreateWindowSurface, we must
         * notify the ws about surface destruction for clean-up.
	 **/
	if (egl_helper_has_mapping(surface)) {
	    ws_DestroyWindow(egl_helper_pop_mapping(surface));
	}

	return result;
}

static EGLImageKHR _my_eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list)
{
	EGL_DLSYM(&_eglCreateImageKHR, "eglCreateImageKHR");
	EGLenum newtarget = target;
	EGLClientBuffer newbuffer = buffer;

	ws_passthroughImageKHR(&newtarget, &newbuffer);
	if (newtarget == EGL_NATIVE_BUFFER_ANDROID)
	{
		assert(((struct ANativeWindowBuffer *) newbuffer)->common.magic == ANDROID_NATIVE_BUFFER_MAGIC);
		attrib_list=NULL;
	}

	EGLImageKHR ret = (*_eglCreateImageKHR)(dpy, EGL_NO_CONTEXT, newtarget, newbuffer, attrib_list);
	return ret;
}