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replicant-frameworks_native/opengl/libs/EGL/egl_display.cpp

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/*
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <string.h>
#include "egl_cache.h"
#include "egl_display.h"
#include "egl_object.h"
#include "egl_tls.h"
#include "egl_impl.h"
#include "Loader.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
static char const * const sVendorString = "Android";
static char const * const sVersionString = "1.4 Android META-EGL";
static char const * const sClientApiString = "OpenGL ES";
// this is the list of EGL extensions that are exposed to applications
// some of them are mandatory because used by the ANDROID system.
//
// mandatory extensions are required per the CDD and not explicitly
// checked during EGL initialization. the system *assumes* these extensions
// are present. the system may not function properly if some mandatory
// extensions are missing.
//
// NOTE: sExtensionString MUST be have a single space as the last character.
//
static char const * const sExtensionString =
"EGL_KHR_image " // mandatory
"EGL_KHR_image_base " // mandatory
"EGL_KHR_image_pixmap "
"EGL_KHR_gl_texture_2D_image "
"EGL_KHR_gl_texture_cubemap_image "
"EGL_KHR_gl_renderbuffer_image "
"EGL_KHR_fence_sync "
"EGL_NV_system_time "
"EGL_ANDROID_image_native_buffer " // mandatory
;
// extensions not exposed to applications but used by the ANDROID system
// "EGL_ANDROID_recordable " // mandatory
// "EGL_ANDROID_blob_cache " // strongly recommended
extern void initEglTraceLevel();
extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
static int cmp_configs(const void* a, const void *b) {
const egl_config_t& c0 = *(egl_config_t const *)a;
const egl_config_t& c1 = *(egl_config_t const *)b;
return c0<c1 ? -1 : (c1<c0 ? 1 : 0);
}
// ----------------------------------------------------------------------------
egl_display_t egl_display_t::sDisplay[NUM_DISPLAYS];
egl_display_t::egl_display_t() :
magic('_dpy'), numTotalConfigs(0), configs(0), refs(0) {
}
egl_display_t::~egl_display_t() {
magic = 0;
egl_cache_t::get()->terminate();
}
egl_display_t* egl_display_t::get(EGLDisplay dpy) {
uintptr_t index = uintptr_t(dpy)-1U;
return (index >= NUM_DISPLAYS) ? NULL : &sDisplay[index];
}
void egl_display_t::addObject(egl_object_t* object) {
Mutex::Autolock _l(lock);
objects.add(object);
}
void egl_display_t::removeObject(egl_object_t* object) {
Mutex::Autolock _l(lock);
objects.remove(object);
}
bool egl_display_t::getObject(egl_object_t* object) const {
Mutex::Autolock _l(lock);
if (objects.indexOf(object) >= 0) {
if (object->getDisplay() == this) {
object->incRef();
return true;
}
}
return false;
}
EGLDisplay egl_display_t::getFromNativeDisplay(EGLNativeDisplayType disp) {
if (uintptr_t(disp) >= NUM_DISPLAYS)
return NULL;
return sDisplay[uintptr_t(disp)].getDisplay(disp);
}
EGLDisplay egl_display_t::getDisplay(EGLNativeDisplayType display) {
Mutex::Autolock _l(lock);
// get our driver loader
Loader& loader(Loader::getInstance());
for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso && disp[i].dpy == EGL_NO_DISPLAY) {
EGLDisplay dpy = cnx->egl.eglGetDisplay(display);
disp[i].dpy = dpy;
if (dpy == EGL_NO_DISPLAY) {
loader.close(cnx->dso);
cnx->dso = NULL;
}
}
}
return EGLDisplay(uintptr_t(display) + 1U);
}
EGLBoolean egl_display_t::initialize(EGLint *major, EGLint *minor) {
Mutex::Autolock _l(lock);
if (refs > 0) {
if (major != NULL)
*major = VERSION_MAJOR;
if (minor != NULL)
*minor = VERSION_MINOR;
refs++;
return EGL_TRUE;
}
#if EGL_TRACE
// Called both at early_init time and at this time. (Early_init is pre-zygote, so
// the information from that call may be stale.)
initEglTraceLevel();
#endif
setGLHooksThreadSpecific(&gHooksNoContext);
// initialize each EGL and
// build our own extension string first, based on the extension we know
// and the extension supported by our client implementation
for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
cnx->major = -1;
cnx->minor = -1;
if (!cnx->dso)
continue;
#if defined(ADRENO130)
#warning "Adreno-130 eglInitialize() workaround"
/*
* The ADRENO 130 driver returns a different EGLDisplay each time
* eglGetDisplay() is called, but also makes the EGLDisplay invalid
* after eglTerminate() has been called, so that eglInitialize()
* cannot be called again. Therefore, we need to make sure to call
* eglGetDisplay() before calling eglInitialize();
*/
if (i == IMPL_HARDWARE) {
disp[i].dpy =
cnx->egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
}
#endif
EGLDisplay idpy = disp[i].dpy;
if (cnx->egl.eglInitialize(idpy, &cnx->major, &cnx->minor)) {
//ALOGD("initialized %d dpy=%p, ver=%d.%d, cnx=%p",
// i, idpy, cnx->major, cnx->minor, cnx);
// display is now initialized
disp[i].state = egl_display_t::INITIALIZED;
// get the query-strings for this display for each implementation
disp[i].queryString.vendor = cnx->egl.eglQueryString(idpy,
EGL_VENDOR);
disp[i].queryString.version = cnx->egl.eglQueryString(idpy,
EGL_VERSION);
disp[i].queryString.extensions = cnx->egl.eglQueryString(idpy,
EGL_EXTENSIONS);
disp[i].queryString.clientApi = cnx->egl.eglQueryString(idpy,
EGL_CLIENT_APIS);
} else {
LOGW("%d: eglInitialize(%p) failed (%s)", i, idpy,
egl_tls_t::egl_strerror(cnx->egl.eglGetError()));
}
}
// the query strings are per-display
mVendorString.setTo(sVendorString);
mVersionString.setTo(sVersionString);
mClientApiString.setTo(sClientApiString);
// we only add extensions that exist in at least one implementation
char const* start = sExtensionString;
char const* end;
do {
// find the space separating this extension for the next one
end = strchr(start, ' ');
if (end) {
// length of the extension string
const size_t len = end - start;
if (len) {
// NOTE: we could avoid the copy if we had strnstr.
const String8 ext(start, len);
// now go through all implementations and look for this extension
for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
if (disp[i].queryString.extensions) {
// if we find it, add this extension string to our list
// (and don't forget the space)
const char* match = strstr(disp[i].queryString.extensions, ext.string());
if (match && (match[len] == ' ' || match[len] == 0)) {
mExtensionString.append(start, len+1);
}
}
}
}
// process the next extension string, and skip the space.
start = end + 1;
}
} while (end);
egl_cache_t::get()->initialize(this);
EGLBoolean res = EGL_FALSE;
for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso && cnx->major >= 0 && cnx->minor >= 0) {
EGLint n;
if (cnx->egl.eglGetConfigs(disp[i].dpy, 0, 0, &n)) {
disp[i].config = (EGLConfig*) malloc(sizeof(EGLConfig) * n);
if (disp[i].config) {
if (cnx->egl.eglGetConfigs(disp[i].dpy, disp[i].config, n,
&disp[i].numConfigs)) {
numTotalConfigs += n;
res = EGL_TRUE;
}
}
}
}
}
if (res == EGL_TRUE) {
configs = new egl_config_t[numTotalConfigs];
for (int i = 0, k = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso && cnx->major >= 0 && cnx->minor >= 0) {
for (int j = 0; j < disp[i].numConfigs; j++) {
configs[k].impl = i;
configs[k].config = disp[i].config[j];
configs[k].configId = k + 1; // CONFIG_ID start at 1
// store the implementation's CONFIG_ID
cnx->egl.eglGetConfigAttrib(disp[i].dpy, disp[i].config[j],
EGL_CONFIG_ID, &configs[k].implConfigId);
k++;
}
}
}
// sort our configurations so we can do binary-searches
qsort(configs, numTotalConfigs, sizeof(egl_config_t), cmp_configs);
refs++;
if (major != NULL)
*major = VERSION_MAJOR;
if (minor != NULL)
*minor = VERSION_MINOR;
return EGL_TRUE;
}
return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
}
EGLBoolean egl_display_t::terminate() {
Mutex::Autolock _l(lock);
if (refs == 0) {
return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
}
// this is specific to Android, display termination is ref-counted.
if (refs > 1) {
refs--;
return EGL_TRUE;
}
EGLBoolean res = EGL_FALSE;
for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso && disp[i].state == egl_display_t::INITIALIZED) {
if (cnx->egl.eglTerminate(disp[i].dpy) == EGL_FALSE) {
LOGW("%d: eglTerminate(%p) failed (%s)", i, disp[i].dpy,
egl_tls_t::egl_strerror(cnx->egl.eglGetError()));
}
// REVISIT: it's unclear what to do if eglTerminate() fails
free(disp[i].config);
disp[i].numConfigs = 0;
disp[i].config = 0;
disp[i].state = egl_display_t::TERMINATED;
res = EGL_TRUE;
}
}
// Mark all objects remaining in the list as terminated, unless
// there are no reference to them, it which case, we're free to
// delete them.
size_t count = objects.size();
LOGW_IF(count, "eglTerminate() called w/ %d objects remaining", count);
for (size_t i=0 ; i<count ; i++) {
egl_object_t* o = objects.itemAt(i);
o->destroy();
}
// this marks all object handles are "terminated"
objects.clear();
refs--;
numTotalConfigs = 0;
delete[] configs;
return res;
}
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
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