Class EglCore
Hierarchy
java.lang.Object
- Package
- com.android.grafika.gles
Overview
Core EGL state (display, context, config).The EGLContext must only be attached to one thread at a time. This class is not thread-safe.
Quick Jump
- Fields
- Constructors
- Methods
-
- release()
- finalize()
- releaseSurface(EGLSurface eglSurface)
- createWindowSurface(Object surface)
- createOffscreenSurface(int width,int height)
- makeCurrent(EGLSurface eglSurface)
- makeCurrent(EGLSurface drawSurface,EGLSurface readSurface)
- makeNothingCurrent()
- swapBuffers(EGLSurface eglSurface)
- setPresentationTime(EGLSurface eglSurface,long nsecs)
- isCurrent(EGLSurface eglSurface)
- querySurface(EGLSurface eglSurface,int what)
- queryString(int what)
- getGlVersion()
- logCurrent(String msg)
Fields
FLAG_RECORDABLE
public static final int FLAG_RECORDABLE
- Constant Value
- 1
FLAG_TRY_GLES3
public static final int FLAG_TRY_GLES3
- Constant Value
- 2
Constructors
EglCore()
Prepares EGL display and context.
Equivalent to EglCore(null, 0).
public EglCore()
EglCore( EGLContext sharedContext, int flags )
Prepares EGL display and context.
public EglCore(EGLContext sharedContext,int flags)
Constructor Parameters
- sharedContext
- The context to share, or null if sharing is not desired.
- flags
- Configuration bit flags, e.g. FLAG_RECORDABLE.
Methods
release()
Discards all resources held by this class, notably the EGL context. This must be called from the thread where the context was created.
On completion, no context will be current.
public void release()
finalize()
protected void finalize() throws java.lang.Throwable
Throws
- java.lang.Throwable
releaseSurface( EGLSurface eglSurface )
Destroys the specified surface. Note the EGLSurface won't actually be destroyed if it's still current in a context.
public void releaseSurface(EGLSurface eglSurface)
Method Parameters
- eglSurface
createWindowSurface( Object surface )
Creates an EGL surface associated with a Surface.
If this is destined for MediaCodec, the EGLConfig should have the "recordable" attribute.
public android.opengl.EGLSurface createWindowSurface(Object surface)
Method Parameters
- surface
createOffscreenSurface( int width, int height )
Creates an EGL surface associated with an offscreen buffer.
public android.opengl.EGLSurface createOffscreenSurface(int width,int height)
Method Parameters
- width
- height
makeCurrent( EGLSurface eglSurface )
Makes our EGL context current, using the supplied surface for both "draw" and "read".
public void makeCurrent(EGLSurface eglSurface)
Method Parameters
- eglSurface
makeCurrent( EGLSurface drawSurface, EGLSurface readSurface )
Makes our EGL context current, using the supplied "draw" and "read" surfaces.
public void makeCurrent(EGLSurface drawSurface,EGLSurface readSurface)
Method Parameters
- drawSurface
- readSurface
makeNothingCurrent()
Makes no context current.
public void makeNothingCurrent()
swapBuffers( EGLSurface eglSurface )
Calls eglSwapBuffers. Use this to "publish" the current frame.
public boolean swapBuffers(EGLSurface eglSurface)
Method Parameters
- eglSurface
setPresentationTime( EGLSurface eglSurface, long nsecs )
Sends the presentation time stamp to EGL. Time is expressed in nanoseconds.
public void setPresentationTime(EGLSurface eglSurface,long nsecs)
Method Parameters
- eglSurface
- nsecs
isCurrent( EGLSurface eglSurface )
Returns true if our context and the specified surface are current.
public boolean isCurrent(EGLSurface eglSurface)
Method Parameters
- eglSurface
querySurface( EGLSurface eglSurface, int what )
Performs a simple surface query.
public int querySurface(EGLSurface eglSurface,int what)
Method Parameters
- eglSurface
- what
queryString( int what )
Queries a string value.
public java.lang.String queryString(int what)
Method Parameters
- what
getGlVersion()
Returns the GLES version this context is configured for (currently 2 or 3).
public int getGlVersion()
logCurrent( String msg )
Writes the current display, context, and surface to the log.
public static void logCurrent(String msg)
Method Parameters
- msg
Inherited Methods
| From Class | Methods |
|---|---|
| java.lang.Object | getClass, hashCode, equals, clone, toString, notify, notifyAll, wait, wait, wait, finalize |