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replicant-frameworks_native/opengl/libs/EGL/eglApi.cpp
Mathias Agopian 48d438d05f add support for GL_EXT_debug_marker 
This extension is always added to the GL_EXTENSIONS
extension string for the current GL context, regardless
of if it's supported by the h/w driver.

The extension itself will be handled by GLES_trace (eventually),
when GLES_trace is not enabled, it'll result to a no-op.

If the h/w implementation has this extension, we'll call that version
instead of our dummy version.

Change-Id: Ie5dd3387c4d45cd5ed5f03b73bda6045620a96bc
2012-01-29 22:22:09 -08:00

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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 <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <hardware/gralloc.h>
#include <system/window.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <cutils/properties.h>
#include <cutils/memory.h>
#include <utils/KeyedVector.h>
#include <utils/SortedVector.h>
#include <utils/String8.h>
#include "egl_impl.h"
#include "egl_tls.h"
#include "glestrace.h"
#include "hooks.h"
#include "egl_display.h"
#include "egl_impl.h"
#include "egl_object.h"
#include "egl_tls.h"
using namespace android;
// ----------------------------------------------------------------------------
#define EGL_VERSION_HW_ANDROID 0x3143
struct extention_map_t {
const char* name;
__eglMustCastToProperFunctionPointerType address;
};
static const extention_map_t sExtentionMap[] = {
{ "eglLockSurfaceKHR",
(__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
{ "eglUnlockSurfaceKHR",
(__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR },
{ "eglCreateImageKHR",
(__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR },
{ "eglDestroyImageKHR",
(__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR },
{ "eglGetSystemTimeFrequencyNV",
(__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeFrequencyNV },
{ "eglGetSystemTimeNV",
(__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeNV },
};
// accesses protected by sExtensionMapMutex
static DefaultKeyedVector<String8, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
static int sGLExtentionSlot = 0;
static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
static void(*findProcAddress(const char* name,
const extention_map_t* map, size_t n))() {
for (uint32_t i=0 ; i<n ; i++) {
if (!strcmp(name, map[i].name)) {
return map[i].address;
}
}
return NULL;
}
// ----------------------------------------------------------------------------
template<typename T>
static __attribute__((noinline))
int binarySearch(T const sortedArray[], int first, int last, T key) {
while (first <= last) {
int mid = (first + last) / 2;
if (sortedArray[mid] < key) {
first = mid + 1;
} else if (key < sortedArray[mid]) {
last = mid - 1;
} else {
return mid;
}
}
return -1;
}
// ----------------------------------------------------------------------------
namespace android {
extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
extern EGLBoolean egl_init_drivers();
extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
extern int gEGLDebugLevel;
extern gl_hooks_t gHooksTrace;
} // namespace android;
// ----------------------------------------------------------------------------
static inline void clearError() { egl_tls_t::clearError(); }
static inline EGLContext getContext() { return egl_tls_t::getContext(); }
// ----------------------------------------------------------------------------
EGLDisplay eglGetDisplay(EGLNativeDisplayType display)
{
clearError();
uint32_t index = uint32_t(display);
if (index >= NUM_DISPLAYS) {
return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
}
if (egl_init_drivers() == EGL_FALSE) {
return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
}
EGLDisplay dpy = egl_display_t::getFromNativeDisplay(display);
return dpy;
}
// ----------------------------------------------------------------------------
// Initialization
// ----------------------------------------------------------------------------
EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
{
clearError();
egl_display_t * const dp = get_display(dpy);
if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
EGLBoolean res = dp->initialize(major, minor);
return res;
}
EGLBoolean eglTerminate(EGLDisplay dpy)
{
// NOTE: don't unload the drivers b/c some APIs can be called
// after eglTerminate() has been called. eglTerminate() only
// terminates an EGLDisplay, not a EGL itself.
clearError();
egl_display_t* const dp = get_display(dpy);
if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
EGLBoolean res = dp->terminate();
return res;
}
// ----------------------------------------------------------------------------
// configuration
// ----------------------------------------------------------------------------
EGLBoolean eglGetConfigs( EGLDisplay dpy,
EGLConfig *configs,
EGLint config_size, EGLint *num_config)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
GLint numConfigs = dp->numTotalConfigs;
if (!configs) {
*num_config = numConfigs;
return EGL_TRUE;
}
GLint n = 0;
for (intptr_t i=0 ; i<dp->numTotalConfigs && config_size ; i++) {
*configs++ = EGLConfig(i);
config_size--;
n++;
}
*num_config = n;
return EGL_TRUE;
}
EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
EGLConfig *configs, EGLint config_size,
EGLint *num_config)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
if (num_config==0) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLint n;
EGLBoolean res = EGL_FALSE;
*num_config = 0;
// It is unfortunate, but we need to remap the EGL_CONFIG_IDs,
// to do this, we have to go through the attrib_list array once
// to figure out both its size and if it contains an EGL_CONFIG_ID
// key. If so, the full array is copied and patched.
// NOTE: we assume that there can be only one occurrence
// of EGL_CONFIG_ID.
EGLint patch_index = -1;
GLint attr;
size_t size = 0;
if (attrib_list) {
while ((attr=attrib_list[size]) != EGL_NONE) {
if (attr == EGL_CONFIG_ID)
patch_index = size;
size += 2;
}
}
if (patch_index >= 0) {
size += 2; // we need copy the sentinel as well
EGLint* new_list = (EGLint*)malloc(size*sizeof(EGLint));
if (new_list == 0)
return setError(EGL_BAD_ALLOC, EGL_FALSE);
memcpy(new_list, attrib_list, size*sizeof(EGLint));
// patch the requested EGL_CONFIG_ID
bool found = false;
EGLConfig ourConfig(0);
EGLint& configId(new_list[patch_index+1]);
for (intptr_t i=0 ; i<dp->numTotalConfigs ; i++) {
if (dp->configs[i].configId == configId) {
ourConfig = EGLConfig(i);
configId = dp->configs[i].implConfigId;
found = true;
break;
}
}
egl_connection_t* const cnx = &gEGLImpl[dp->configs[intptr_t(ourConfig)].impl];
if (found && cnx->dso) {
// and switch to the new list
attrib_list = const_cast<const EGLint *>(new_list);
// At this point, the only configuration that can match is
// dp->configs[i][index], however, we don't know if it would be
// rejected because of the other attributes, so we do have to call
// cnx->egl.eglChooseConfig() -- but we don't have to loop
// through all the EGLimpl[].
// We also know we can only get a single config back, and we know
// which one.
res = cnx->egl.eglChooseConfig(
dp->disp[ dp->configs[intptr_t(ourConfig)].impl ].dpy,
attrib_list, configs, config_size, &n);
if (res && n>0) {
// n has to be 0 or 1, by construction, and we already know
// which config it will return (since there can be only one).
if (configs) {
configs[0] = ourConfig;
}
*num_config = 1;
}
}
free(const_cast<EGLint *>(attrib_list));
return res;
}
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {
if (cnx->egl.eglChooseConfig(
dp->disp[i].dpy, attrib_list, configs, config_size, &n)) {
if (configs) {
// now we need to convert these client EGLConfig to our
// internal EGLConfig format.
// This is done in O(n Log(n)) time.
for (int j=0 ; j<n ; j++) {
egl_config_t key(i, configs[j]);
intptr_t index = binarySearch<egl_config_t>(
dp->configs, 0, dp->numTotalConfigs, key);
if (index >= 0) {
configs[j] = EGLConfig(index);
} else {
return setError(EGL_BAD_CONFIG, EGL_FALSE);
}
}
configs += n;
config_size -= n;
}
*num_config += n;
res = EGL_TRUE;
}
}
}
return res;
}
EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (!cnx) return EGL_FALSE;
if (attribute == EGL_CONFIG_ID) {
*value = dp->configs[intptr_t(config)].configId;
return EGL_TRUE;
}
return cnx->egl.eglGetConfigAttrib(
dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
dp->configs[intptr_t(config)].config, attribute, value);
}
// ----------------------------------------------------------------------------
// surfaces
// ----------------------------------------------------------------------------
EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config,
NativeWindowType window,
const EGLint *attrib_list)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (cnx) {
EGLDisplay iDpy = dp->disp[ dp->configs[intptr_t(config)].impl ].dpy;
EGLConfig iConfig = dp->configs[intptr_t(config)].config;
EGLint format;
if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != OK) {
ALOGE("EGLNativeWindowType %p already connected to another API",
window);
return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
}
// set the native window's buffers format to match this config
if (cnx->egl.eglGetConfigAttrib(iDpy,
iConfig, EGL_NATIVE_VISUAL_ID, &format)) {
if (format != 0) {
int err = native_window_set_buffers_format(window, format);
if (err != 0) {
ALOGE("error setting native window pixel format: %s (%d)",
strerror(-err), err);
native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
}
}
}
// the EGL spec requires that a new EGLSurface default to swap interval
// 1, so explicitly set that on the window here.
ANativeWindow* anw = reinterpret_cast<ANativeWindow*>(window);
anw->setSwapInterval(anw, 1);
EGLSurface surface = cnx->egl.eglCreateWindowSurface(
iDpy, iConfig, window, attrib_list);
if (surface != EGL_NO_SURFACE) {
egl_surface_t* s = new egl_surface_t(dpy, config, window, surface,
dp->configs[intptr_t(config)].impl, cnx);
return s;
}
// EGLSurface creation failed
native_window_set_buffers_format(window, 0);
native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
}
return EGL_NO_SURFACE;
}
EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config,
NativePixmapType pixmap,
const EGLint *attrib_list)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (cnx) {
EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
dp->configs[intptr_t(config)].config, pixmap, attrib_list);
if (surface != EGL_NO_SURFACE) {
egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
dp->configs[intptr_t(config)].impl, cnx);
return s;
}
}
return EGL_NO_SURFACE;
}
EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (cnx) {
EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
dp->configs[intptr_t(config)].config, attrib_list);
if (surface != EGL_NO_SURFACE) {
egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
dp->configs[intptr_t(config)].impl, cnx);
return s;
}
}
return EGL_NO_SURFACE;
}
EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t * const s = get_surface(surface);
EGLBoolean result = s->cnx->egl.eglDestroySurface(
dp->disp[s->impl].dpy, s->surface);
if (result == EGL_TRUE) {
_s.terminate();
}
return result;
}
EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
EGLint attribute, EGLint *value)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
EGLBoolean result(EGL_TRUE);
if (attribute == EGL_CONFIG_ID) {
// We need to remap EGL_CONFIG_IDs
*value = dp->configs[intptr_t(s->config)].configId;
} else {
result = s->cnx->egl.eglQuerySurface(
dp->disp[s->impl].dpy, s->surface, attribute, value);
}
return result;
}
void EGLAPI eglBeginFrame(EGLDisplay dpy, EGLSurface surface) {
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) {
return;
}
SurfaceRef _s(dp, surface);
if (!_s.get()) {
setError(EGL_BAD_SURFACE, EGL_FALSE);
return;
}
int64_t timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
egl_surface_t const * const s = get_surface(surface);
native_window_set_buffers_timestamp(s->win.get(), timestamp);
}
// ----------------------------------------------------------------------------
// Contexts
// ----------------------------------------------------------------------------
EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
EGLContext share_list, const EGLint *attrib_list)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (cnx) {
if (share_list != EGL_NO_CONTEXT) {
egl_context_t* const c = get_context(share_list);
share_list = c->context;
}
EGLContext context = cnx->egl.eglCreateContext(
dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
dp->configs[intptr_t(config)].config,
share_list, attrib_list);
if (context != EGL_NO_CONTEXT) {
// figure out if it's a GLESv1 or GLESv2
int version = 0;
if (attrib_list) {
while (*attrib_list != EGL_NONE) {
GLint attr = *attrib_list++;
GLint value = *attrib_list++;
if (attr == EGL_CONTEXT_CLIENT_VERSION) {
if (value == 1) {
version = GLESv1_INDEX;
} else if (value == 2) {
version = GLESv2_INDEX;
}
}
};
}
egl_context_t* c = new egl_context_t(dpy, context, config,
dp->configs[intptr_t(config)].impl, cnx, version);
#if EGL_TRACE
if (gEGLDebugLevel > 0)
GLTrace_eglCreateContext(version, c);
#endif
return c;
}
}
return EGL_NO_CONTEXT;
}
EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp)
return EGL_FALSE;
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_context_t * const c = get_context(ctx);
EGLBoolean result = c->cnx->egl.eglDestroyContext(
dp->disp[c->impl].dpy, c->context);
if (result == EGL_TRUE) {
_c.terminate();
}
return result;
}
static void loseCurrent(egl_context_t * cur_c)
{
if (cur_c) {
egl_surface_t * cur_r = get_surface(cur_c->read);
egl_surface_t * cur_d = get_surface(cur_c->draw);
// by construction, these are either 0 or valid (possibly terminated)
// it should be impossible for these to be invalid
ContextRef _cur_c(cur_c);
SurfaceRef _cur_r(cur_r);
SurfaceRef _cur_d(cur_d);
cur_c->onLooseCurrent();
_cur_c.release();
_cur_r.release();
_cur_d.release();
}
}
EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx)
{
clearError();
egl_display_t const * const dp = get_display(dpy);
if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
// EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
// a valid but uninitialized display.
if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
(draw != EGL_NO_SURFACE) ) {
if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
}
// get a reference to the object passed in
ContextRef _c(dp, ctx);
SurfaceRef _d(dp, draw);
SurfaceRef _r(dp, read);
// validate the context (if not EGL_NO_CONTEXT)
if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
// EGL_NO_CONTEXT is valid
return EGL_FALSE;
}
// these are the underlying implementation's object
EGLContext impl_ctx = EGL_NO_CONTEXT;
EGLSurface impl_draw = EGL_NO_SURFACE;
EGLSurface impl_read = EGL_NO_SURFACE;
// these are our objects structs passed in
egl_context_t * c = NULL;
egl_surface_t const * d = NULL;
egl_surface_t const * r = NULL;
// these are the current objects structs
egl_context_t * cur_c = get_context(getContext());
if (ctx != EGL_NO_CONTEXT) {
c = get_context(ctx);
impl_ctx = c->context;
} else {
// no context given, use the implementation of the current context
if (cur_c == NULL) {
// no current context
if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
// calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
return setError(EGL_BAD_MATCH, EGL_FALSE);
}
// not an error, there is just no current context.
return EGL_TRUE;
}
}
// retrieve the underlying implementation's draw EGLSurface
if (draw != EGL_NO_SURFACE) {
d = get_surface(draw);
// make sure the EGLContext and EGLSurface passed in are for
// the same driver
if (c && d->impl != c->impl)
return setError(EGL_BAD_MATCH, EGL_FALSE);
impl_draw = d->surface;
}
// retrieve the underlying implementation's read EGLSurface
if (read != EGL_NO_SURFACE) {
r = get_surface(read);
// make sure the EGLContext and EGLSurface passed in are for
// the same driver
if (c && r->impl != c->impl)
return setError(EGL_BAD_MATCH, EGL_FALSE);
impl_read = r->surface;
}
EGLBoolean result;
if (c) {
result = c->cnx->egl.eglMakeCurrent(
dp->disp[c->impl].dpy, impl_draw, impl_read, impl_ctx);
} else {
result = cur_c->cnx->egl.eglMakeCurrent(
dp->disp[cur_c->impl].dpy, impl_draw, impl_read, impl_ctx);
}
if (result == EGL_TRUE) {
loseCurrent(cur_c);
if (ctx != EGL_NO_CONTEXT) {
setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
egl_tls_t::setContext(ctx);
#if EGL_TRACE
if (gEGLDebugLevel > 0)
GLTrace_eglMakeCurrent(c->version, c->cnx->hooks[c->version], ctx);
#endif
_c.acquire();
_r.acquire();
_d.acquire();
c->onMakeCurrent(draw, read);
} else {
setGLHooksThreadSpecific(&gHooksNoContext);
egl_tls_t::setContext(EGL_NO_CONTEXT);
}
} else {
// this will ALOGE the error
result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
}
return result;
}
EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
ContextRef _c(dp, ctx);
if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_context_t * const c = get_context(ctx);
EGLBoolean result(EGL_TRUE);
if (attribute == EGL_CONFIG_ID) {
*value = dp->configs[intptr_t(c->config)].configId;
} else {
// We need to remap EGL_CONFIG_IDs
result = c->cnx->egl.eglQueryContext(
dp->disp[c->impl].dpy, c->context, attribute, value);
}
return result;
}
EGLContext eglGetCurrentContext(void)
{
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would correctly return EGL_NO_CONTEXT.
clearError();
EGLContext ctx = getContext();
return ctx;
}
EGLSurface eglGetCurrentSurface(EGLint readdraw)
{
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would correctly return EGL_NO_SURFACE.
clearError();
EGLContext ctx = getContext();
if (ctx) {
egl_context_t const * const c = get_context(ctx);
if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
switch (readdraw) {
case EGL_READ: return c->read;
case EGL_DRAW: return c->draw;
default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
}
}
return EGL_NO_SURFACE;
}
EGLDisplay eglGetCurrentDisplay(void)
{
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would correctly return EGL_NO_DISPLAY.
clearError();
EGLContext ctx = getContext();
if (ctx) {
egl_context_t const * const c = get_context(ctx);
if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
return c->dpy;
}
return EGL_NO_DISPLAY;
}
EGLBoolean eglWaitGL(void)
{
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would return GL_TRUE, which isn't wrong.
clearError();
EGLBoolean res = EGL_TRUE;
EGLContext ctx = getContext();
if (ctx) {
egl_context_t const * const c = get_context(ctx);
if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
if (uint32_t(c->impl)>=2)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_connection_t* const cnx = &gEGLImpl[c->impl];
if (!cnx->dso)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
res = cnx->egl.eglWaitGL();
}
return res;
}
EGLBoolean eglWaitNative(EGLint engine)
{
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would return GL_TRUE, which isn't wrong.
clearError();
EGLBoolean res = EGL_TRUE;
EGLContext ctx = getContext();
if (ctx) {
egl_context_t const * const c = get_context(ctx);
if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
if (uint32_t(c->impl)>=2)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_connection_t* const cnx = &gEGLImpl[c->impl];
if (!cnx->dso)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
res = cnx->egl.eglWaitNative(engine);
}
return res;
}
EGLint eglGetError(void)
{
EGLint result = EGL_SUCCESS;
EGLint err;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
err = EGL_SUCCESS;
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso)
err = cnx->egl.eglGetError();
if (err!=EGL_SUCCESS && result==EGL_SUCCESS)
result = err;
}
err = egl_tls_t::getError();
if (result == EGL_SUCCESS)
result = err;
return result;
}
// Note: Similar implementations of these functions also exist in
// gl2.cpp and gl.cpp, and are used by applications that call the
// exported entry points directly.
typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES_impl = NULL;
static PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC glEGLImageTargetRenderbufferStorageOES_impl = NULL;
static void glEGLImageTargetTexture2DOES_wrapper(GLenum target, GLeglImageOES image)
{
GLeglImageOES implImage =
(GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
glEGLImageTargetTexture2DOES_impl(target, implImage);
}
static void glEGLImageTargetRenderbufferStorageOES_wrapper(GLenum target, GLeglImageOES image)
{
GLeglImageOES implImage =
(GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
glEGLImageTargetRenderbufferStorageOES_impl(target, implImage);
}
__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
{
// eglGetProcAddress() could be the very first function called
// in which case we must make sure we've initialized ourselves, this
// happens the first time egl_get_display() is called.
clearError();
if (egl_init_drivers() == EGL_FALSE) {
setError(EGL_BAD_PARAMETER, NULL);
return NULL;
}
// The EGL_ANDROID_blob_cache extension should not be exposed to
// applications. It is used internally by the Android EGL layer.
if (!strcmp(procname, "eglSetBlobCacheFuncsANDROID")) {
return NULL;
}
__eglMustCastToProperFunctionPointerType addr;
addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
if (addr) return addr;
// this protects accesses to sGLExtentionMap and sGLExtentionSlot
pthread_mutex_lock(&sExtensionMapMutex);
/*
* Since eglGetProcAddress() is not associated to anything, it needs
* to return a function pointer that "works" regardless of what
* the current context is.
*
* For this reason, we return a "forwarder", a small stub that takes
* care of calling the function associated with the context
* currently bound.
*
* We first look for extensions we've already resolved, if we're seeing
* this extension for the first time, we go through all our
* implementations and call eglGetProcAddress() and record the
* result in the appropriate implementation hooks and return the
* address of the forwarder corresponding to that hook set.
*
*/
const String8 name(procname);
addr = sGLExtentionMap.valueFor(name);
const int slot = sGLExtentionSlot;
ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
"no more slots for eglGetProcAddress(\"%s\")",
procname);
#if EGL_TRACE
gl_hooks_t *debugHooks = GLTrace_getGLHooks();
#endif
if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
bool found = false;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso && cnx->egl.eglGetProcAddress) {
found = true;
// Extensions are independent of the bound context
cnx->hooks[GLESv1_INDEX]->ext.extensions[slot] =
cnx->hooks[GLESv2_INDEX]->ext.extensions[slot] =
#if EGL_TRACE
debugHooks->ext.extensions[slot] =
gHooksTrace.ext.extensions[slot] =
#endif
cnx->egl.eglGetProcAddress(procname);
}
}
if (found) {
addr = gExtensionForwarders[slot];
if (!strcmp(procname, "glEGLImageTargetTexture2DOES")) {
glEGLImageTargetTexture2DOES_impl = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)addr;
addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetTexture2DOES_wrapper;
}
if (!strcmp(procname, "glEGLImageTargetRenderbufferStorageOES")) {
glEGLImageTargetRenderbufferStorageOES_impl = (PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC)addr;
addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetRenderbufferStorageOES_wrapper;
}
sGLExtentionMap.add(name, addr);
sGLExtentionSlot++;
}
}
pthread_mutex_unlock(&sExtensionMapMutex);
return addr;
}
EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, draw);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
#if EGL_TRACE
if (gEGLDebugLevel > 0)
GLTrace_eglSwapBuffers(dpy, draw);
#endif
egl_surface_t const * const s = get_surface(draw);
return s->cnx->egl.eglSwapBuffers(dp->disp[s->impl].dpy, s->surface);
}
EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface,
NativePixmapType target)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
return s->cnx->egl.eglCopyBuffers(
dp->disp[s->impl].dpy, s->surface, target);
}
const char* eglQueryString(EGLDisplay dpy, EGLint name)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return (const char *) NULL;
switch (name) {
case EGL_VENDOR:
return dp->getVendorString();
case EGL_VERSION:
return dp->getVersionString();
case EGL_EXTENSIONS:
return dp->getExtensionString();
case EGL_CLIENT_APIS:
return dp->getClientApiString();
case EGL_VERSION_HW_ANDROID: {
if (gEGLImpl[IMPL_HARDWARE].dso) {
return dp->disp[IMPL_HARDWARE].queryString.version;
}
return dp->disp[IMPL_SOFTWARE].queryString.version;
}
}
return setError(EGL_BAD_PARAMETER, (const char *)0);
}
// ----------------------------------------------------------------------------
// EGL 1.1
// ----------------------------------------------------------------------------
EGLBoolean eglSurfaceAttrib(
EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
if (s->cnx->egl.eglSurfaceAttrib) {
return s->cnx->egl.eglSurfaceAttrib(
dp->disp[s->impl].dpy, s->surface, attribute, value);
}
return setError(EGL_BAD_SURFACE, EGL_FALSE);
}
EGLBoolean eglBindTexImage(
EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
if (s->cnx->egl.eglBindTexImage) {
return s->cnx->egl.eglBindTexImage(
dp->disp[s->impl].dpy, s->surface, buffer);
}
return setError(EGL_BAD_SURFACE, EGL_FALSE);
}
EGLBoolean eglReleaseTexImage(
EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
if (s->cnx->egl.eglReleaseTexImage) {
return s->cnx->egl.eglReleaseTexImage(
dp->disp[s->impl].dpy, s->surface, buffer);
}
return setError(EGL_BAD_SURFACE, EGL_FALSE);
}
EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
EGLBoolean res = EGL_TRUE;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {
if (cnx->egl.eglSwapInterval) {
if (cnx->egl.eglSwapInterval(
dp->disp[i].dpy, interval) == EGL_FALSE) {
res = EGL_FALSE;
}
}
}
}
return res;
}
// ----------------------------------------------------------------------------
// EGL 1.2
// ----------------------------------------------------------------------------
EGLBoolean eglWaitClient(void)
{
clearError();
// could be called before eglInitialize(), but we wouldn't have a context
// then, and this function would return GL_TRUE, which isn't wrong.
EGLBoolean res = EGL_TRUE;
EGLContext ctx = getContext();
if (ctx) {
egl_context_t const * const c = get_context(ctx);
if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
if (uint32_t(c->impl)>=2)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_connection_t* const cnx = &gEGLImpl[c->impl];
if (!cnx->dso)
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
if (cnx->egl.eglWaitClient) {
res = cnx->egl.eglWaitClient();
} else {
res = cnx->egl.eglWaitGL();
}
}
return res;
}
EGLBoolean eglBindAPI(EGLenum api)
{
clearError();
if (egl_init_drivers() == EGL_FALSE) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
// bind this API on all EGLs
EGLBoolean res = EGL_TRUE;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {
if (cnx->egl.eglBindAPI) {
if (cnx->egl.eglBindAPI(api) == EGL_FALSE) {
res = EGL_FALSE;
}
}
}
}
return res;
}
EGLenum eglQueryAPI(void)
{
clearError();
if (egl_init_drivers() == EGL_FALSE) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {
if (cnx->egl.eglQueryAPI) {
// the first one we find is okay, because they all
// should be the same
return cnx->egl.eglQueryAPI();
}
}
}
// or, it can only be OpenGL ES
return EGL_OPENGL_ES_API;
}
EGLBoolean eglReleaseThread(void)
{
clearError();
// If there is context bound to the thread, release it
loseCurrent(get_context(getContext()));
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {
if (cnx->egl.eglReleaseThread) {
cnx->egl.eglReleaseThread();
}
}
}
egl_tls_t::clearTLS();
#if EGL_TRACE
if (gEGLDebugLevel > 0)
GLTrace_eglReleaseThread();
#endif
return EGL_TRUE;
}
EGLSurface eglCreatePbufferFromClientBuffer(
EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
EGLConfig config, const EGLint *attrib_list)
{
clearError();
egl_display_t const* dp = 0;
egl_connection_t* cnx = validate_display_config(dpy, config, dp);
if (!cnx) return EGL_FALSE;
if (cnx->egl.eglCreatePbufferFromClientBuffer) {
return cnx->egl.eglCreatePbufferFromClientBuffer(
dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
buftype, buffer,
dp->configs[intptr_t(config)].config, attrib_list);
}
return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
}
// ----------------------------------------------------------------------------
// EGL_EGLEXT_VERSION 3
// ----------------------------------------------------------------------------
EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
const EGLint *attrib_list)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
if (s->cnx->egl.eglLockSurfaceKHR) {
return s->cnx->egl.eglLockSurfaceKHR(
dp->disp[s->impl].dpy, s->surface, attrib_list);
}
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
}
EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SurfaceRef _s(dp, surface);
if (!_s.get())
return setError(EGL_BAD_SURFACE, EGL_FALSE);
egl_surface_t const * const s = get_surface(surface);
if (s->cnx->egl.eglUnlockSurfaceKHR) {
return s->cnx->egl.eglUnlockSurfaceKHR(
dp->disp[s->impl].dpy, s->surface);
}
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
}
EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
EGLClientBuffer buffer, const EGLint *attrib_list)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_NO_IMAGE_KHR;
if (ctx != EGL_NO_CONTEXT) {
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_NO_IMAGE_KHR);
egl_context_t * const c = get_context(ctx);
// since we have an EGLContext, we know which implementation to use
EGLImageKHR image = c->cnx->egl.eglCreateImageKHR(
dp->disp[c->impl].dpy, c->context, target, buffer, attrib_list);
if (image == EGL_NO_IMAGE_KHR)
return image;
egl_image_t* result = new egl_image_t(dpy, ctx);
result->images[c->impl] = image;
return (EGLImageKHR)result;
} else {
// EGL_NO_CONTEXT is a valid parameter
/* Since we don't have a way to know which implementation to call,
* we're calling all of them. If at least one of the implementation
* succeeded, this is a success.
*/
EGLint currentError = eglGetError();
EGLImageKHR implImages[IMPL_NUM_IMPLEMENTATIONS];
bool success = false;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
implImages[i] = EGL_NO_IMAGE_KHR;
if (cnx->dso) {
if (cnx->egl.eglCreateImageKHR) {
implImages[i] = cnx->egl.eglCreateImageKHR(
dp->disp[i].dpy, ctx, target, buffer, attrib_list);
if (implImages[i] != EGL_NO_IMAGE_KHR) {
success = true;
}
}
}
}
if (!success) {
// failure, if there was an error when we entered this function,
// the error flag must not be updated.
// Otherwise, the error is whatever happened in the implementation
// that faulted.
if (currentError != EGL_SUCCESS) {
setError(currentError, EGL_NO_IMAGE_KHR);
}
return EGL_NO_IMAGE_KHR;
} else {
// In case of success, we need to clear all error flags
// (especially those caused by the implementation that didn't
// succeed). TODO: we could avoid this if we knew this was
// a "full" success (all implementation succeeded).
eglGetError();
}
egl_image_t* result = new egl_image_t(dpy, ctx);
memcpy(result->images, implImages, sizeof(implImages));
return (EGLImageKHR)result;
}
}
EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
ImageRef _i(dp, img);
if (!_i.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
egl_image_t* image = get_image(img);
bool success = false;
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (image->images[i] != EGL_NO_IMAGE_KHR) {
if (cnx->dso) {
if (cnx->egl.eglDestroyImageKHR) {
if (cnx->egl.eglDestroyImageKHR(
dp->disp[i].dpy, image->images[i])) {
success = true;
}
}
}
}
}
if (!success)
return EGL_FALSE;
_i.terminate();
return EGL_TRUE;
}
// ----------------------------------------------------------------------------
// EGL_EGLEXT_VERSION 5
// ----------------------------------------------------------------------------
EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_NO_SYNC_KHR;
EGLContext ctx = eglGetCurrentContext();
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_NO_SYNC_KHR);
egl_context_t * const c = get_context(ctx);
EGLSyncKHR result = EGL_NO_SYNC_KHR;
if (c->cnx->egl.eglCreateSyncKHR) {
EGLSyncKHR sync = c->cnx->egl.eglCreateSyncKHR(
dp->disp[c->impl].dpy, type, attrib_list);
if (sync == EGL_NO_SYNC_KHR)
return sync;
result = (egl_sync_t*)new egl_sync_t(dpy, ctx, sync);
}
return (EGLSyncKHR)result;
}
EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SyncRef _s(dp, sync);
if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
egl_sync_t* syncObject = get_sync(sync);
EGLContext ctx = syncObject->context;
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
EGLBoolean result = EGL_FALSE;
egl_context_t * const c = get_context(ctx);
if (c->cnx->egl.eglDestroySyncKHR) {
result = c->cnx->egl.eglDestroySyncKHR(
dp->disp[c->impl].dpy, syncObject->sync);
if (result)
_s.terminate();
}
return result;
}
EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SyncRef _s(dp, sync);
if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
egl_sync_t* syncObject = get_sync(sync);
EGLContext ctx = syncObject->context;
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_context_t * const c = get_context(ctx);
if (c->cnx->egl.eglClientWaitSyncKHR) {
return c->cnx->egl.eglClientWaitSyncKHR(
dp->disp[c->impl].dpy, syncObject->sync, flags, timeout);
}
return EGL_FALSE;
}
EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint attribute, EGLint *value)
{
clearError();
egl_display_t const * const dp = validate_display(dpy);
if (!dp) return EGL_FALSE;
SyncRef _s(dp, sync);
if (!_s.get())
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
egl_sync_t* syncObject = get_sync(sync);
EGLContext ctx = syncObject->context;
ContextRef _c(dp, ctx);
if (!_c.get())
return setError(EGL_BAD_CONTEXT, EGL_FALSE);
egl_context_t * const c = get_context(ctx);
if (c->cnx->egl.eglGetSyncAttribKHR) {
return c->cnx->egl.eglGetSyncAttribKHR(
dp->disp[c->impl].dpy, syncObject->sync, attribute, value);
}
return EGL_FALSE;
}
// ----------------------------------------------------------------------------
// ANDROID extensions
// ----------------------------------------------------------------------------
/* ANDROID extensions entry-point go here */
// ----------------------------------------------------------------------------
// NVIDIA extensions
// ----------------------------------------------------------------------------
EGLuint64NV eglGetSystemTimeFrequencyNV()
{
clearError();
if (egl_init_drivers() == EGL_FALSE) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLuint64NV ret = 0;
egl_connection_t* const cnx = &gEGLImpl[IMPL_HARDWARE];
if (cnx->dso) {
if (cnx->egl.eglGetSystemTimeFrequencyNV) {
return cnx->egl.eglGetSystemTimeFrequencyNV();
}
}
return setErrorQuiet(EGL_BAD_DISPLAY, 0);
}
EGLuint64NV eglGetSystemTimeNV()
{
clearError();
if (egl_init_drivers() == EGL_FALSE) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLuint64NV ret = 0;
egl_connection_t* const cnx = &gEGLImpl[IMPL_HARDWARE];
if (cnx->dso) {
if (cnx->egl.eglGetSystemTimeNV) {
return cnx->egl.eglGetSystemTimeNV();
}
}
return setErrorQuiet(EGL_BAD_DISPLAY, 0);
}
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