replicant-frameworks_native/opengl/libs/EGL/egl.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 <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/CallStack.h>
#include <utils/String8.h>
#include "egldefs.h"
#include "egl_impl.h"
#include "egl_tls.h"
#include "glestrace.h"
#include "hooks.h"
#include "Loader.h"
#include "egl_display.h"
#include "egl_object.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
egl_connection_t gEGLImpl[IMPL_NUM_IMPLEMENTATIONS];
gl_hooks_t gHooks[2][IMPL_NUM_IMPLEMENTATIONS];
gl_hooks_t gHooksNoContext;
pthread_key_t gGLWrapperKey = -1;
// ----------------------------------------------------------------------------
#if EGL_TRACE
EGLAPI pthread_key_t gGLTraceKey = -1;
// ----------------------------------------------------------------------------
int gEGLDebugLevel;
static int sEGLTraceLevel;
static int sEGLApplicationTraceLevel;
extern gl_hooks_t gHooksTrace;
static inline void setGlTraceThreadSpecific(gl_hooks_t const *value) {
pthread_setspecific(gGLTraceKey, value);
}
gl_hooks_t const* getGLTraceThreadSpecific() {
return static_cast<gl_hooks_t*>(pthread_getspecific(gGLTraceKey));
}
void initEglTraceLevel() {
char value[PROPERTY_VALUE_MAX];
property_get("debug.egl.trace", value, "0");
int propertyLevel = atoi(value);
int applicationLevel = sEGLApplicationTraceLevel;
sEGLTraceLevel = propertyLevel > applicationLevel ? propertyLevel : applicationLevel;
property_get("debug.egl.debug_proc", value, "");
if (strlen(value) == 0)
return;
long pid = getpid();
char procPath[128] = {};
sprintf(procPath, "/proc/%ld/cmdline", pid);
FILE * file = fopen(procPath, "r");
if (file) {
char cmdline[256] = {};
if (fgets(cmdline, sizeof(cmdline) - 1, file)) {
if (!strncmp(value, cmdline, strlen(value))) {
// set EGL debug if the "debug.egl.debug_proc" property
// matches the prefix of this application's command line
gEGLDebugLevel = 1;
}
}
fclose(file);
}
if (gEGLDebugLevel > 0) {
GLTrace_start();
}
}
void setGLHooksThreadSpecific(gl_hooks_t const *value) {
if (sEGLTraceLevel > 0) {
setGlTraceThreadSpecific(value);
setGlThreadSpecific(&gHooksTrace);
} else if (gEGLDebugLevel > 0 && value != &gHooksNoContext) {
setGlTraceThreadSpecific(value);
setGlThreadSpecific(GLTrace_getGLHooks());
} else {
setGlThreadSpecific(value);
}
}
/*
* Global entry point to allow applications to modify their own trace level.
* The effective trace level is the max of this level and the value of debug.egl.trace.
*/
extern "C"
void setGLTraceLevel(int level) {
sEGLApplicationTraceLevel = level;
}
#else
void setGLHooksThreadSpecific(gl_hooks_t const *value) {
setGlThreadSpecific(value);
}
#endif
/*****************************************************************************/
static int gl_no_context() {
if (egl_tls_t::logNoContextCall()) {
ALOGE("call to OpenGL ES API with no current context "
"(logged once per thread)");
char value[PROPERTY_VALUE_MAX];
property_get("debug.egl.callstack", value, "0");
if (atoi(value)) {
CallStack stack;
stack.update();
stack.dump();
}
}
return 0;
}
static void early_egl_init(void)
{
#if !USE_FAST_TLS_KEY
pthread_key_create(&gGLWrapperKey, NULL);
#endif
#if EGL_TRACE
pthread_key_create(&gGLTraceKey, NULL);
initEglTraceLevel();
#endif
uint32_t addr = (uint32_t)((void*)gl_no_context);
android_memset32(
(uint32_t*)(void*)&gHooksNoContext,
addr,
sizeof(gHooksNoContext));
setGLHooksThreadSpecific(&gHooksNoContext);
}
static pthread_once_t once_control = PTHREAD_ONCE_INIT;
static int sEarlyInitState = pthread_once(&once_control, &early_egl_init);
// ----------------------------------------------------------------------------
egl_display_t* validate_display(EGLDisplay dpy) {
egl_display_t * const dp = get_display(dpy);
if (!dp)
return setError(EGL_BAD_DISPLAY, (egl_display_t*)NULL);
if (!dp->isReady())
return setError(EGL_NOT_INITIALIZED, (egl_display_t*)NULL);
return dp;
}
egl_connection_t* validate_display_config(EGLDisplay dpy, EGLConfig config,
egl_display_t const*& dp) {
dp = validate_display(dpy);
if (!dp)
return (egl_connection_t*) NULL;
if (intptr_t(config) >= dp->numTotalConfigs) {
return setError(EGL_BAD_CONFIG, (egl_connection_t*)NULL);
}
egl_connection_t* const cnx = &gEGLImpl[dp->configs[intptr_t(config)].impl];
if (cnx->dso == 0) {
return setError(EGL_BAD_CONFIG, (egl_connection_t*)NULL);
}
return cnx;
}
// ----------------------------------------------------------------------------
EGLImageKHR egl_get_image_for_current_context(EGLImageKHR image)
{
EGLContext context = egl_tls_t::getContext();
if (context == EGL_NO_CONTEXT || image == EGL_NO_IMAGE_KHR)
return EGL_NO_IMAGE_KHR;
egl_context_t const * const c = get_context(context);
if (c == NULL) // this should never happen, by construction
return EGL_NO_IMAGE_KHR;
egl_display_t* display = egl_display_t::get(c->dpy);
if (display == NULL) // this should never happen, by construction
return EGL_NO_IMAGE_KHR;
ImageRef _i(display, image);
if (!_i.get())
return EGL_NO_IMAGE_KHR;
// here we don't validate the context because if it's been marked for
// termination, this call should still succeed since it's internal to
// EGL.
egl_image_t const * const i = get_image(image);
return i->images[c->impl];
}
// ----------------------------------------------------------------------------
// this mutex protects:
// d->disp[]
// egl_init_drivers_locked()
//
static EGLBoolean egl_init_drivers_locked() {
if (sEarlyInitState) {
// initialized by static ctor. should be set here.
return EGL_FALSE;
}
// get our driver loader
Loader& loader(Loader::getInstance());
// dynamically load all our EGL implementations
egl_connection_t* cnx;
cnx = &gEGLImpl[IMPL_SOFTWARE];
if (cnx->dso == 0) {
cnx->hooks[GLESv1_INDEX] = &gHooks[GLESv1_INDEX][IMPL_SOFTWARE];
cnx->hooks[GLESv2_INDEX] = &gHooks[GLESv2_INDEX][IMPL_SOFTWARE];
cnx->dso = loader.open(EGL_DEFAULT_DISPLAY, 0, cnx);
}
cnx = &gEGLImpl[IMPL_HARDWARE];
if (cnx->dso == 0) {
char value[PROPERTY_VALUE_MAX];
property_get("debug.egl.hw", value, "1");
if (atoi(value) != 0) {
cnx->hooks[GLESv1_INDEX] = &gHooks[GLESv1_INDEX][IMPL_HARDWARE];
cnx->hooks[GLESv2_INDEX] = &gHooks[GLESv2_INDEX][IMPL_HARDWARE];
cnx->dso = loader.open(EGL_DEFAULT_DISPLAY, 1, cnx);
} else {
ALOGD("3D hardware acceleration is disabled");
}
}
if (!gEGLImpl[IMPL_SOFTWARE].dso && !gEGLImpl[IMPL_HARDWARE].dso) {
return EGL_FALSE;
}
return EGL_TRUE;
}
static pthread_mutex_t sInitDriverMutex = PTHREAD_MUTEX_INITIALIZER;
EGLBoolean egl_init_drivers() {
EGLBoolean res;
pthread_mutex_lock(&sInitDriverMutex);
res = egl_init_drivers_locked();
pthread_mutex_unlock(&sInitDriverMutex);
return res;
}
void gl_unimplemented() {
ALOGE("called unimplemented OpenGL ES API");
}
// ----------------------------------------------------------------------------
#if USE_FAST_TLS_KEY
// We have a dedicated TLS slot in bionic
static inline gl_hooks_t const * volatile * get_tls_hooks() {
volatile void *tls_base = __get_tls();
gl_hooks_t const * volatile * tls_hooks =
reinterpret_cast<gl_hooks_t const * volatile *>(tls_base);
return tls_hooks;
}
void setGlThreadSpecific(gl_hooks_t const *value) {
gl_hooks_t const * volatile * tls_hooks = get_tls_hooks();
tls_hooks[TLS_SLOT_OPENGL_API] = value;
}
gl_hooks_t const* getGlThreadSpecific() {
gl_hooks_t const * volatile * tls_hooks = get_tls_hooks();
gl_hooks_t const* hooks = tls_hooks[TLS_SLOT_OPENGL_API];
if (hooks) return hooks;
return &gHooksNoContext;
}
#else
void setGlThreadSpecific(gl_hooks_t const *value) {
pthread_setspecific(gGLWrapperKey, value);
}
gl_hooks_t const* getGlThreadSpecific() {
gl_hooks_t const* hooks = static_cast<gl_hooks_t*>(pthread_getspecific(gGLWrapperKey));
if (hooks) return hooks;
return &gHooksNoContext;
}
#endif
// ----------------------------------------------------------------------------
// GL / EGL hooks
// ----------------------------------------------------------------------------
#undef GL_ENTRY
#undef EGL_ENTRY
#define GL_ENTRY(_r, _api, ...) #_api,
#define EGL_ENTRY(_r, _api, ...) #_api,
char const * const gl_names[] = {
#include "entries.in"
NULL
};
char const * const egl_names[] = {
#include "egl_entries.in"
NULL
};
#undef GL_ENTRY
#undef EGL_ENTRY
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------