下面列出了android.opengl.EGLContext#android.opengl.EGL14 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private static EGLContext createEGLContext(
EGLDisplay display, EGLConfig config, @SecureMode int secureMode) {
int[] glAttributes;
if (secureMode == SECURE_MODE_NONE) {
glAttributes = new int[] {EGL14.EGL_CONTEXT_CLIENT_VERSION, 2, EGL14.EGL_NONE};
} else {
glAttributes =
new int[] {
EGL14.EGL_CONTEXT_CLIENT_VERSION,
2,
EGL_PROTECTED_CONTENT_EXT,
EGL14.EGL_TRUE,
EGL14.EGL_NONE
};
}
EGLContext context =
EGL14.eglCreateContext(
display, config, android.opengl.EGL14.EGL_NO_CONTEXT, glAttributes, 0);
if (context == null) {
throw new GlException("eglCreateContext failed");
}
return context;
}
private static EGLConfig chooseEGLConfig(EGLDisplay display) {
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
boolean success =
EGL14.eglChooseConfig(
display,
EGL_CONFIG_ATTRIBUTES,
/* attrib_listOffset= */ 0,
configs,
/* configsOffset= */ 0,
/* config_size= */ 1,
numConfigs,
/* num_configOffset= */ 0);
if (!success || numConfigs[0] <= 0 || configs[0] == null) {
throw new GlException(
Util.formatInvariant(
/* format= */ "eglChooseConfig failed: success=%b, numConfigs[0]=%d, configs[0]=%s",
success, numConfigs[0], configs[0]));
}
return configs[0];
}
/**
* Discards all resources held by this class, notably the EGL context. Also releases the
* Surface that was passed to our constructor.
*/
public void release() {
if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
EGL14.EGL_NO_CONTEXT);
EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(mEGLDisplay);
}
mSurface.release();
mEGLDisplay = EGL14.EGL_NO_DISPLAY;
mEGLContext = EGL14.EGL_NO_CONTEXT;
mEGLSurface = EGL14.EGL_NO_SURFACE;
mSurface = null;
}
/**
* Discard all resources held by this class, notably the EGL context. Also releases the Surface that was passed to our constructor.
*/
public void release() {
if ( EGL14.eglGetCurrentContext().equals( mEGLContext ) ) {
// Clear the current context and surface to ensure they are discarded immediately.
EGL14.eglMakeCurrent( mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT );
}
EGL14.eglDestroySurface( mEGLDisplay, mEGLSurface );
EGL14.eglDestroyContext( mEGLDisplay, mEGLContext );
// EGL14.eglTerminate(mEGLDisplay);
mSurface.release();
// null everything out so future attempts to use this object will cause an NPE
mEGLDisplay = null;
mEGLContext = null;
mEGLSurface = null;
mSurface = null;
}
private int[] filterConfigSpec(int[] configSpec) {
if (mEGLContextClientVersion != 2 && mEGLContextClientVersion != 3) {
return configSpec;
}
/* We know none of the subclasses define EGL_RENDERABLE_TYPE.
* And we know the configSpec is well formed.
*/
int len = configSpec.length;
int[] newConfigSpec = new int[len + 2];
System.arraycopy(configSpec, 0, newConfigSpec, 0, len-1);
newConfigSpec[len-1] = EGL10.EGL_RENDERABLE_TYPE;
if (mEGLContextClientVersion == 2) {
newConfigSpec[len] = EGL14.EGL_OPENGL_ES2_BIT; /* EGL_OPENGL_ES2_BIT */
} else {
newConfigSpec[len] = EGLExt.EGL_OPENGL_ES3_BIT_KHR; /* EGL_OPENGL_ES3_BIT_KHR */
}
newConfigSpec[len+1] = EGL10.EGL_NONE;
return newConfigSpec;
}
/**
* Discard all resources held by this class, notably the EGL context.
*/
public void release() {
if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(mEGLDisplay);
}
mSurface.release();
// this causes a bunch of warnings that appear harmless but might confuse someone:
// W BufferQueue: [unnamed-3997-2] cancelBuffer: BufferQueue has been abandoned!
//mSurfaceTexture.release();
mEGLDisplay = EGL14.EGL_NO_DISPLAY;
mEGLContext = EGL14.EGL_NO_CONTEXT;
mEGLSurface = EGL14.EGL_NO_SURFACE;
mTextureRender = null;
mSurface = null;
mSurfaceTexture = null;
}
/**
* Discards all resources held by this class, notably the EGL context. This must be
* called from the thread where the context was created.
* <p/>
* On completion, no context will be current.
*/
public void release() {
if (eGLDisplay != EGL14.EGL_NO_DISPLAY) {
// Android is unusual in that it uses a reference-counted EGLDisplay. So for
// every eglInitialize() we need an eglTerminate().
EGL14.eglMakeCurrent(eGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
EGL14.EGL_NO_CONTEXT);
EGL14.eglDestroyContext(eGLDisplay, eGLContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eGLDisplay);
}
eGLDisplay = EGL14.EGL_NO_DISPLAY;
eGLContext = EGL14.EGL_NO_CONTEXT;
eGLConfig = null;
}
/**
* Discard all resources held by this class, notably the EGL context. Also releases the
* Surface that was passed to our constructor.
*/
public void release() {
if (EGL14.eglGetCurrentContext().equals(mEGLContext)) {
// Clear the current context and surface to ensure they are discarded immediately.
EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
EGL14.EGL_NO_CONTEXT);
}
EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
//EGL14.eglTerminate(mEGLDisplay);
mSurface.release();
// null everything out so future attempts to use this object will cause an NPE
mEGLDisplay = null;
mEGLContext = null;
mEGLSurface = null;
mSurface = null;
}
/**
* Discard all resources held by this class, notably the EGL context.
*/
void release() {
if (eglDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglDestroySurface(eglDisplay, eglSurface);
EGL14.eglDestroyContext(eglDisplay, eglContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eglDisplay);
}
surface.release();
previewTexture.release();
// this causes a bunch of warnings that appear harmless but might confuse someone:
// W BufferQueue: [unnamed-3997-2] cancelBuffer: BufferQueue has been abandoned!
//surfaceTexture.release();
eglDisplay = EGL14.EGL_NO_DISPLAY;
eglContext = EGL14.EGL_NO_CONTEXT;
eglSurface = EGL14.EGL_NO_SURFACE;
filter.release();
filter = null;
surface = null;
previewTexture = null;
}
private static EGLContext createEGLContext(
EGLDisplay display, EGLConfig config, @SecureMode int secureMode) {
int[] glAttributes;
if (secureMode == SECURE_MODE_NONE) {
glAttributes = new int[] {EGL14.EGL_CONTEXT_CLIENT_VERSION, 2, EGL14.EGL_NONE};
} else {
glAttributes =
new int[] {
EGL14.EGL_CONTEXT_CLIENT_VERSION,
2,
EGL_PROTECTED_CONTENT_EXT,
EGL14.EGL_TRUE,
EGL14.EGL_NONE
};
}
EGLContext context =
EGL14.eglCreateContext(
display, config, android.opengl.EGL14.EGL_NO_CONTEXT, glAttributes, 0);
if (context == null) {
throw new GlException("eglCreateContext failed");
}
return context;
}
private void destroyContext() {
if (DEBUG) Log.v(TAG, "destroyContext:");
if (!EGL14.eglDestroyContext(eglDisplay, eglContext)) {
Log.e("destroyContext", "display:" + eglDisplay + " context: " + eglContext);
Log.e(TAG, "eglDestroyContex:" + EGL14.eglGetError());
}
eglContext = EGL14.EGL_NO_CONTEXT;
if (defaultContext != EGL14.EGL_NO_CONTEXT) {
if (!EGL14.eglDestroyContext(eglDisplay, defaultContext)) {
Log.e("destroyContext", "display:" + eglDisplay + " context: " + defaultContext);
Log.e(TAG, "eglDestroyContex:" + EGL14.eglGetError());
}
defaultContext = EGL14.EGL_NO_CONTEXT;
}
}
/**
* Discards all resources held by this class, notably the EGL context. This must be called from
* the thread where the context was created.
*
* <p>On completion, no context will be current.
*/
public void release() {
if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
// Android is unusual in that it uses a reference-counted EGLDisplay. So for
// every eglInitialize() we need an eglTerminate().
EGL14.eglMakeCurrent(
mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(mEGLDisplay);
}
mEGLDisplay = EGL14.EGL_NO_DISPLAY;
mEGLContext = EGL14.EGL_NO_CONTEXT;
mEGLConfig = null;
}
/**
* change context to draw this window surface
* @return
*/
private boolean makeCurrent(final EGLSurface surface) {
// if (DEBUG) Log.v(TAG, "makeCurrent:");
if (mEglDisplay == null) {
if (DEBUG) Log.d(TAG, "makeCurrent:eglDisplay not initialized");
}
if (surface == null || surface == EGL14.EGL_NO_SURFACE) {
final int error = EGL14.eglGetError();
if (error == EGL14.EGL_BAD_NATIVE_WINDOW) {
Log.e(TAG, "makeCurrent:returned EGL_BAD_NATIVE_WINDOW.");
}
return false;
}
// attach EGL renderring context to specific EGL window surface
if (!EGL14.eglMakeCurrent(mEglDisplay, surface, surface, mEglContext)) {
Log.w(TAG, "eglMakeCurrent:" + EGL14.eglGetError());
return false;
}
return true;
}
private void destroyContext() {
if (DEBUG) Log.v(TAG, "destroyContext:");
if (!EGL14.eglDestroyContext(mEglDisplay, mEglContext)) {
Log.e("destroyContext", "display:" + mEglDisplay + " context: " + mEglContext);
Log.e(TAG, "eglDestroyContex:" + EGL14.eglGetError());
}
mEglContext = EGL14.EGL_NO_CONTEXT;
if (mDefaultContext != EGL14.EGL_NO_CONTEXT) {
if (!EGL14.eglDestroyContext(mEglDisplay, mDefaultContext)) {
Log.e("destroyContext", "display:" + mEglDisplay + " context: " + mDefaultContext);
Log.e(TAG, "eglDestroyContex:" + EGL14.eglGetError());
}
mDefaultContext = EGL14.EGL_NO_CONTEXT;
}
}
@Override
protected void finalize() throws Throwable {
try {
if (eGLDisplay != EGL14.EGL_NO_DISPLAY) {
// We're limited here -- finalizers don't run on the thread that holds
// the EGL state, so if a surface or context is still current on another
// thread we can't fully release it here. Exceptions thrown from here
// are quietly discarded. Complain in the log file.
Log.w(TAG, "WARNING: EglCore was not explicitly released -- state may be leaked");
release();
}
} finally {
super.finalize();
}
}
public void release() {
LogUtil.i(TAG, "release:");
if (mEglDisplay != EGL14.EGL_NO_DISPLAY) {
destroyContext();
EGL14.eglTerminate(mEglDisplay);
EGL14.eglReleaseThread();
}
mEglDisplay = EGL14.EGL_NO_DISPLAY;
mEglContext = EGL14.EGL_NO_CONTEXT;
}
private EGLContext createContext(final Context sharedContext,
final EGLConfig config, final int version) {
if (DEBUG) Log.v(TAG, "createContext:version=" + version);
final int[] attrib_list = {
EGL14.EGL_CONTEXT_CLIENT_VERSION, version,
EGL14.EGL_NONE
};
final EGLContext context = EGL14.eglCreateContext(mEglDisplay,
config, sharedContext.eglContext, attrib_list, 0);
// checkEglError("eglCreateContext");
return context;
}
private void init(EGLContext shared_context, final boolean with_depth_buffer,
final boolean isRecordable) {
LogUtil.i(TAG, "init:");
if (mEglDisplay != EGL14.EGL_NO_DISPLAY) {
throw new RuntimeException("EGL already set up");
}
mEglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
if (mEglDisplay == EGL14.EGL_NO_DISPLAY) {
throw new RuntimeException("eglGetDisplay failed");
}
final int[] version = new int[2];
if (!EGL14.eglInitialize(mEglDisplay, version, 0, version, 1)) {
mEglDisplay = null;
throw new RuntimeException("eglInitialize failed");
}
shared_context = shared_context != null ? shared_context : EGL14.EGL_NO_CONTEXT;
if (mEglContext == EGL14.EGL_NO_CONTEXT) {
mEglConfig = getConfig(with_depth_buffer, isRecordable);
if (mEglConfig == null) {
throw new RuntimeException("chooseConfig failed");
}
// create EGL rendering context
mEglContext = createContext(shared_context);
}
// confirm whether the EGL rendering context is successfully created
final int[] values = new int[1];
EGL14.eglQueryContext(mEglDisplay, mEglContext, EGL14.EGL_CONTEXT_CLIENT_VERSION, values,
0);
LogUtil.i(TAG, "EGLContext created, client version " + values[0]);
makeDefault(); // makeCurrent(EGL14.EGL_NO_SURFACE);
}
@Override
public void makeCurrent() {
checkIsNotReleased();
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("No EGLSurface - can't make current");
}
synchronized (EglBase.lock) {
if (!EGL14.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
throw new RuntimeException(
"eglMakeCurrent failed: 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
}
/**
* Finds a suitable EGLConfig.
*
* @param flags Bit flags from constructor.
* @param version Must be 2 or 3.
*/
private EGLConfig getConfig(int flags, int version) {
int renderableType = EGL14.EGL_OPENGL_ES2_BIT;
if (version >= 3) {
renderableType |= EGLExt.EGL_OPENGL_ES3_BIT_KHR;
}
// The actual surface is generally RGBA or RGBX, so situationally omitting alpha
// doesn't really help. It can also lead to a huge performance hit on glReadPixels()
// when reading into a GL_RGBA buffer.
int[] attribList = {
EGL14.EGL_RED_SIZE, 8,
EGL14.EGL_GREEN_SIZE, 8,
EGL14.EGL_BLUE_SIZE, 8,
EGL14.EGL_ALPHA_SIZE, 8,
//EGL14.EGL_DEPTH_SIZE, 16,
//EGL14.EGL_STENCIL_SIZE, 8,
EGL14.EGL_RENDERABLE_TYPE, renderableType,
EGL14.EGL_NONE, 0, // placeholder for recordable [@-3]
EGL14.EGL_NONE
};
if ((flags & FLAG_RECORDABLE) != 0) {
attribList[attribList.length - 3] = EGL_RECORDABLE_ANDROID;
attribList[attribList.length - 2] = 1;
}
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.eglChooseConfig(mEGLDisplay, attribList, 0, configs, 0, configs.length,
numConfigs, 0)) {
Log.w(TAG, "unable to find RGB8888 / " + version + " EGLConfig");
return null;
}
return configs[0];
}
/**
* Discard all resources held by this class, notably the EGL context. Also releases the
* Surface that was passed to our constructor.
*/
public void release() {
if (mEGLDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglDestroySurface(mEGLDisplay, mEGLSurface);
EGL14.eglDestroyContext(mEGLDisplay, mEGLContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(mEGLDisplay);
}
mSurface.release();
mEGLDisplay = EGL14.EGL_NO_DISPLAY;
mEGLContext = EGL14.EGL_NO_CONTEXT;
mEGLSurface = EGL14.EGL_NO_SURFACE;
mSurface = null;
}
@Override
public void createPbufferSurface(int width, int height) {
checkIsNotReleased();
if (eglSurface != EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("Already has an EGLSurface");
}
int[] surfaceAttribs = {EGL14.EGL_WIDTH, width, EGL14.EGL_HEIGHT, height, EGL14.EGL_NONE};
eglSurface = EGL14.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs, 0);
if (eglSurface == EGL14.EGL_NO_SURFACE) {
throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x"
+ height + ": 0x" + Integer.toHexString(EGL14.eglGetError()));
}
}
/**
* Checks for EGL errors.
*/
private void checkEglError(String msg) {
int error;
if ((error = EGL14.eglGetError()) != EGL14.EGL_SUCCESS) {
throw new RuntimeException(msg + ": EGL error: 0x" + Integer.toHexString(error));
}
}
/**
* Makes our EGL context current, using the supplied "draw" and "read" surfaces.
*/
public void makeCurrent(EGLSurface drawSurface, EGLSurface readSurface) {
if (mEGLDisplay == EGL14.EGL_NO_DISPLAY) {
// called makeCurrent() before create?
Log.d(TAG, "NOTE: makeCurrent w/o display");
}
if (!EGL14.eglMakeCurrent(mEGLDisplay, drawSurface, readSurface, mEGLContext)) {
throw new RuntimeException("eglMakeCurrent(draw,read) failed");
}
}
private void destroyWindowSurface(EGLSurface surface) {
if (DEBUG) Log.v(TAG, "destroySurface:");
if (surface != EGL14.EGL_NO_SURFACE) {
EGL14.eglMakeCurrent(mEglDisplay,
EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT);
EGL14.eglDestroySurface(mEglDisplay, surface);
}
surface = EGL14.EGL_NO_SURFACE;
if (DEBUG) Log.v(TAG, "destroySurface:finished");
}
/**
* Finds a suitable EGLConfig.
*
* @param flags Bit flags from constructor.
* @param version Must be 2 or 3.
*/
private EGLConfig getConfig(int flags, int version) {
int renderableType = EGL14.EGL_OPENGL_ES2_BIT;
if (version >= 3) {
renderableType |= EGLExt.EGL_OPENGL_ES3_BIT_KHR;
}
// The actual surface is generally RGBA or RGBX, so situationally omitting alpha
// doesn't really help. It can also lead to a huge performance hit on glReadPixels()
// when reading into a GL_RGBA buffer.
int[] attribList = {
EGL14.EGL_RED_SIZE, 8,
EGL14.EGL_GREEN_SIZE, 8,
EGL14.EGL_BLUE_SIZE, 8,
EGL14.EGL_ALPHA_SIZE, 8,
//EGL14.EGL_DEPTH_SIZE, 16,
//EGL14.EGL_STENCIL_SIZE, 8,
EGL14.EGL_RENDERABLE_TYPE, renderableType,
EGL14.EGL_NONE, 0, // placeholder for recordable [@-3]
EGL14.EGL_NONE
};
if ((flags & FLAG_RECORDABLE) != 0) {
attribList[attribList.length - 3] = EGL_RECORDABLE_ANDROID;
attribList[attribList.length - 2] = 1;
}
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.eglChooseConfig(mEGLDisplay, attribList, 0, configs, 0, configs.length,
numConfigs, 0)) {
Log.w(TAG, "unable to find RGB8888 / " + version + " EGLConfig");
return null;
}
return configs[0];
}
/**
* Makes no context current.
*/
public void makeNothingCurrent() {
if (!EGL14.eglMakeCurrent(mEGLDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE,
EGL14.EGL_NO_CONTEXT)) {
throw new RuntimeException("eglMakeCurrent failed");
}
}
@Override
public void release() {
checkIsNotReleased();
releaseSurface();
detachCurrent();
EGL14.eglDestroyContext(eglDisplay, eglContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eglDisplay);
eglContext = EGL14.EGL_NO_CONTEXT;
eglDisplay = EGL14.EGL_NO_DISPLAY;
eglConfig = null;
}
/**
* EGLレンダリングコンテキストとスレッドの紐付けを解除する
*/
@Override
public void makeDefault() {
// if (DEBUG) Log.v(TAG, "makeDefault:");
if (!EGL14.eglMakeCurrent(mEglDisplay,
EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT)) {
Log.w("TAG", "makeDefault" + EGL14.eglGetError());
}
}
private EGLSurface createWindowSurface(final Object nativeWindow) {
if (DEBUG) Log.v(TAG, "createWindowSurface:nativeWindow=" + nativeWindow);
final int[] surfaceAttribs = {
EGL14.EGL_NONE
};
EGLSurface result = null;
try {
result = EGL14.eglCreateWindowSurface(mEglDisplay, mEglConfig, nativeWindow, surfaceAttribs, 0);
} catch (final IllegalArgumentException e) {
Log.e(TAG, "eglCreateWindowSurface", e);
}
return result;
}