c2e41222bf
Change-Id: I684d0b8556cd6c84ee4b4d67e1bb95c3b96fccfb
443 lines
14 KiB
C++
443 lines
14 KiB
C++
/*
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** Copyright 2007, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#define __STDC_LIMIT_MACROS 1
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#include <string.h>
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#include "../egl_impl.h"
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#include "egl_cache.h"
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#include "egl_display.h"
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#include "egl_object.h"
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#include "egl_tls.h"
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#include "Loader.h"
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#include <cutils/properties.h>
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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static char const * const sVendorString = "Android";
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static char const * const sVersionString = "1.4 Android META-EGL";
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static char const * const sClientApiString = "OpenGL_ES";
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extern char const * const gBuiltinExtensionString;
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extern char const * const gExtensionString;
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extern void initEglTraceLevel();
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extern void initEglDebugLevel();
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extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
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// ----------------------------------------------------------------------------
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static bool findExtension(const char* exts, const char* name, size_t nameLen) {
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if (exts) {
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const char* match = strstr(exts, name);
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if (match && (match[nameLen] == '\0' || match[nameLen] == ' ')) {
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return true;
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}
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}
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return false;
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}
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egl_display_t egl_display_t::sDisplay[NUM_DISPLAYS];
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egl_display_t::egl_display_t() :
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magic('_dpy'), finishOnSwap(false), traceGpuCompletion(false), refs(0) {
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}
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egl_display_t::~egl_display_t() {
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magic = 0;
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egl_cache_t::get()->terminate();
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}
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egl_display_t* egl_display_t::get(EGLDisplay dpy) {
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uintptr_t index = uintptr_t(dpy)-1U;
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return (index >= NUM_DISPLAYS) ? NULL : &sDisplay[index];
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}
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void egl_display_t::addObject(egl_object_t* object) {
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Mutex::Autolock _l(lock);
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objects.add(object);
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}
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void egl_display_t::removeObject(egl_object_t* object) {
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Mutex::Autolock _l(lock);
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objects.remove(object);
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}
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bool egl_display_t::getObject(egl_object_t* object) const {
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Mutex::Autolock _l(lock);
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if (objects.indexOf(object) >= 0) {
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if (object->getDisplay() == this) {
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object->incRef();
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return true;
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}
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}
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return false;
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}
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EGLDisplay egl_display_t::getFromNativeDisplay(EGLNativeDisplayType disp) {
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if (uintptr_t(disp) >= NUM_DISPLAYS)
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return NULL;
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return sDisplay[uintptr_t(disp)].getDisplay(disp);
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}
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EGLDisplay egl_display_t::getDisplay(EGLNativeDisplayType display) {
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Mutex::Autolock _l(lock);
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// get our driver loader
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Loader& loader(Loader::getInstance());
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egl_connection_t* const cnx = &gEGLImpl;
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if (cnx->dso && disp.dpy == EGL_NO_DISPLAY) {
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EGLDisplay dpy = cnx->egl.eglGetDisplay(display);
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disp.dpy = dpy;
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if (dpy == EGL_NO_DISPLAY) {
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loader.close(cnx->dso);
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cnx->dso = NULL;
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}
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}
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return EGLDisplay(uintptr_t(display) + 1U);
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}
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EGLBoolean egl_display_t::initialize(EGLint *major, EGLint *minor) {
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Mutex::Autolock _l(lock);
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if (refs > 0) {
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if (major != NULL)
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*major = VERSION_MAJOR;
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if (minor != NULL)
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*minor = VERSION_MINOR;
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refs++;
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return EGL_TRUE;
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}
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#if EGL_TRACE
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// Called both at early_init time and at this time. (Early_init is pre-zygote, so
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// the information from that call may be stale.)
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initEglTraceLevel();
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initEglDebugLevel();
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#endif
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setGLHooksThreadSpecific(&gHooksNoContext);
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// initialize each EGL and
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// build our own extension string first, based on the extension we know
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// and the extension supported by our client implementation
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egl_connection_t* const cnx = &gEGLImpl;
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cnx->major = -1;
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cnx->minor = -1;
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if (cnx->dso) {
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#if defined(ADRENO130)
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#warning "Adreno-130 eglInitialize() workaround"
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/*
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* The ADRENO 130 driver returns a different EGLDisplay each time
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* eglGetDisplay() is called, but also makes the EGLDisplay invalid
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* after eglTerminate() has been called, so that eglInitialize()
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* cannot be called again. Therefore, we need to make sure to call
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* eglGetDisplay() before calling eglInitialize();
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*/
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if (i == IMPL_HARDWARE) {
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disp[i].dpy = cnx->egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
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}
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#endif
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EGLDisplay idpy = disp.dpy;
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if (cnx->egl.eglInitialize(idpy, &cnx->major, &cnx->minor)) {
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//ALOGD("initialized dpy=%p, ver=%d.%d, cnx=%p",
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// idpy, cnx->major, cnx->minor, cnx);
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// display is now initialized
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disp.state = egl_display_t::INITIALIZED;
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// get the query-strings for this display for each implementation
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disp.queryString.vendor = cnx->egl.eglQueryString(idpy,
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EGL_VENDOR);
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disp.queryString.version = cnx->egl.eglQueryString(idpy,
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EGL_VERSION);
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disp.queryString.extensions = cnx->egl.eglQueryString(idpy,
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EGL_EXTENSIONS);
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disp.queryString.clientApi = cnx->egl.eglQueryString(idpy,
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EGL_CLIENT_APIS);
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} else {
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ALOGW("eglInitialize(%p) failed (%s)", idpy,
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egl_tls_t::egl_strerror(cnx->egl.eglGetError()));
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}
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}
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// the query strings are per-display
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mVendorString.setTo(sVendorString);
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mVersionString.setTo(sVersionString);
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mClientApiString.setTo(sClientApiString);
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mExtensionString.setTo(gBuiltinExtensionString);
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char const* start = gExtensionString;
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char const* end;
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do {
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// find the space separating this extension for the next one
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end = strchr(start, ' ');
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if (end) {
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// length of the extension string
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const size_t len = end - start;
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if (len) {
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// NOTE: we could avoid the copy if we had strnstr.
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const String8 ext(start, len);
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if (findExtension(disp.queryString.extensions, ext.string(),
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len)) {
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mExtensionString.append(start, len+1);
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}
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}
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// process the next extension string, and skip the space.
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start = end + 1;
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}
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} while (end);
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egl_cache_t::get()->initialize(this);
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char value[PROPERTY_VALUE_MAX];
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property_get("debug.egl.finish", value, "0");
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if (atoi(value)) {
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finishOnSwap = true;
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}
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property_get("debug.egl.traceGpuCompletion", value, "0");
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if (atoi(value)) {
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traceGpuCompletion = true;
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}
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refs++;
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if (major != NULL)
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*major = VERSION_MAJOR;
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if (minor != NULL)
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*minor = VERSION_MINOR;
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mHibernation.setDisplayValid(true);
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return EGL_TRUE;
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}
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EGLBoolean egl_display_t::terminate() {
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Mutex::Autolock _l(lock);
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if (refs == 0) {
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/*
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* From the EGL spec (3.2):
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* "Termination of a display that has already been terminated,
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* (...), is allowed, but the only effect of such a call is
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* to return EGL_TRUE (...)
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*/
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return EGL_TRUE;
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}
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// this is specific to Android, display termination is ref-counted.
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if (refs > 1) {
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refs--;
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return EGL_TRUE;
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}
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EGLBoolean res = EGL_FALSE;
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egl_connection_t* const cnx = &gEGLImpl;
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if (cnx->dso && disp.state == egl_display_t::INITIALIZED) {
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if (cnx->egl.eglTerminate(disp.dpy) == EGL_FALSE) {
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ALOGW("eglTerminate(%p) failed (%s)", disp.dpy,
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egl_tls_t::egl_strerror(cnx->egl.eglGetError()));
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}
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// REVISIT: it's unclear what to do if eglTerminate() fails
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disp.state = egl_display_t::TERMINATED;
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res = EGL_TRUE;
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}
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mHibernation.setDisplayValid(false);
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// Reset the extension string since it will be regenerated if we get
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// reinitialized.
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mExtensionString.setTo("");
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// Mark all objects remaining in the list as terminated, unless
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// there are no reference to them, it which case, we're free to
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// delete them.
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size_t count = objects.size();
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ALOGW_IF(count, "eglTerminate() called w/ %d objects remaining", count);
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for (size_t i=0 ; i<count ; i++) {
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egl_object_t* o = objects.itemAt(i);
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o->destroy();
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}
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// this marks all object handles are "terminated"
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objects.clear();
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refs--;
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return res;
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}
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void egl_display_t::loseCurrent(egl_context_t * cur_c)
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{
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if (cur_c) {
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egl_display_t* display = cur_c->getDisplay();
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if (display) {
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display->loseCurrentImpl(cur_c);
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}
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}
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}
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void egl_display_t::loseCurrentImpl(egl_context_t * cur_c)
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{
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// by construction, these are either 0 or valid (possibly terminated)
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// it should be impossible for these to be invalid
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ContextRef _cur_c(cur_c);
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SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
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SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
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{ // scope for the lock
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Mutex::Autolock _l(lock);
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cur_c->onLooseCurrent();
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}
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// This cannot be called with the lock held because it might end-up
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// calling back into EGL (in particular when a surface is destroyed
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// it calls ANativeWindow::disconnect
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_cur_c.release();
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_cur_r.release();
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_cur_d.release();
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}
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EGLBoolean egl_display_t::makeCurrent(egl_context_t* c, egl_context_t* cur_c,
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EGLSurface draw, EGLSurface read, EGLContext ctx,
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EGLSurface impl_draw, EGLSurface impl_read, EGLContext impl_ctx)
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{
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EGLBoolean result;
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// by construction, these are either 0 or valid (possibly terminated)
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// it should be impossible for these to be invalid
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ContextRef _cur_c(cur_c);
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SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
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SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
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{ // scope for the lock
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Mutex::Autolock _l(lock);
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if (c) {
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result = c->cnx->egl.eglMakeCurrent(
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disp.dpy, impl_draw, impl_read, impl_ctx);
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if (result == EGL_TRUE) {
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c->onMakeCurrent(draw, read);
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if (!cur_c) {
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mHibernation.incWakeCount(HibernationMachine::STRONG);
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}
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}
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} else {
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result = cur_c->cnx->egl.eglMakeCurrent(
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disp.dpy, impl_draw, impl_read, impl_ctx);
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if (result == EGL_TRUE) {
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cur_c->onLooseCurrent();
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mHibernation.decWakeCount(HibernationMachine::STRONG);
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}
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}
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}
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if (result == EGL_TRUE) {
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// This cannot be called with the lock held because it might end-up
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// calling back into EGL (in particular when a surface is destroyed
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// it calls ANativeWindow::disconnect
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_cur_c.release();
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_cur_r.release();
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_cur_d.release();
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}
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return result;
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}
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bool egl_display_t::haveExtension(const char* name, size_t nameLen) const {
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if (!nameLen) {
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nameLen = strlen(name);
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}
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return findExtension(mExtensionString.string(), name, nameLen);
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}
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// ----------------------------------------------------------------------------
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bool egl_display_t::HibernationMachine::incWakeCount(WakeRefStrength strength) {
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Mutex::Autolock _l(mLock);
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ALOGE_IF(mWakeCount < 0 || mWakeCount == INT32_MAX,
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"Invalid WakeCount (%d) on enter\n", mWakeCount);
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mWakeCount++;
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if (strength == STRONG)
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mAttemptHibernation = false;
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if (CC_UNLIKELY(mHibernating)) {
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ALOGV("Awakening\n");
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egl_connection_t* const cnx = &gEGLImpl;
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// These conditions should be guaranteed before entering hibernation;
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// we don't want to get into a state where we can't wake up.
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ALOGD_IF(!mDpyValid || !cnx->egl.eglAwakenProcessIMG,
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"Invalid hibernation state, unable to awaken\n");
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if (!cnx->egl.eglAwakenProcessIMG()) {
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ALOGE("Failed to awaken EGL implementation\n");
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return false;
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}
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mHibernating = false;
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}
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return true;
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}
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void egl_display_t::HibernationMachine::decWakeCount(WakeRefStrength strength) {
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Mutex::Autolock _l(mLock);
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ALOGE_IF(mWakeCount <= 0, "Invalid WakeCount (%d) on leave\n", mWakeCount);
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mWakeCount--;
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if (strength == STRONG)
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mAttemptHibernation = true;
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if (mWakeCount == 0 && CC_UNLIKELY(mAttemptHibernation)) {
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egl_connection_t* const cnx = &gEGLImpl;
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mAttemptHibernation = false;
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if (mAllowHibernation && mDpyValid &&
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cnx->egl.eglHibernateProcessIMG &&
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cnx->egl.eglAwakenProcessIMG) {
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ALOGV("Hibernating\n");
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if (!cnx->egl.eglHibernateProcessIMG()) {
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ALOGE("Failed to hibernate EGL implementation\n");
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return;
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}
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mHibernating = true;
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}
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}
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}
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void egl_display_t::HibernationMachine::setDisplayValid(bool valid) {
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Mutex::Autolock _l(mLock);
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mDpyValid = valid;
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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// ----------------------------------------------------------------------------
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