com.mapbox.vision.gl

Class EglCore

com.mapbox.vision.gl.EglCore

All Implemented Interfaces:

GLReleasable

public class EglCore
implements GLReleasable

Core EGL state (display, context, config).

The EGLContext must only be attached to one thread at a time. This class is not thread-safe.

Inspired by Grafika

See Also:

Grafika

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EglCore.Companion

Field Summary

Fields

Modifier and Type	Field and Description
static EglCore.Companion	Companion
static int	FLAG_EGL_RECORDABLE_ANDROID

Constructor Summary

Constructors

Constructor and Description
EglCore(android.opengl.EGLContext sharedContext, int flags) Core EGL state (display, context, config).
EglCore(android.opengl.EGLContext sharedContext) Core EGL state (display, context, config).
EglCore() Core EGL state (display, context, config).

Method Summary

Modifier and Type	Method and Description
android.opengl.EGLSurface	createOffscreenSurface(int width, int height) Creates an EGL surface associated with an offscreen buffer.
android.opengl.EGLSurface	createWindowSurface(android.view.Surface surface) Creates an EGL surface associated with a Surface.
android.opengl.EGLContext	getEglContext()
boolean	makeCurrent(android.opengl.EGLSurface eglSurface) Makes our EGL context current, using the supplied surface for both "draw" and "read".
void	release() Discards all resources held by this class, notably the EGL context. This must be called from the thread where the context was created.
void	releaseSurface(android.opengl.EGLSurface eglSurface) Destroys the specified surface. Note the EGLSurface won't actually be destroyed if it's still current in a context.
void	setPresentationTime(android.opengl.EGLSurface eglSurface, long nanoseconds) Sends the presentation time stamp to EGL. Time is expressed in nanoseconds.
boolean	swapBuffers(android.opengl.EGLSurface eglSurface) Calls eglSwapBuffers. Use this to "publish" the current frame.

Methods inherited from interface com.mapbox.vision.gl.GLReleasable

release

Field Detail

FLAG_EGL_RECORDABLE_ANDROID

public static int FLAG_EGL_RECORDABLE_ANDROID

Companion

public static EglCore.Companion Companion

Constructor Detail

EglCore

public EglCore(android.opengl.EGLContext sharedContext,
               int flags)

Core EGL state (display, context, config).

The EGLContext must only be attached to one thread at a time. This class is not thread-safe.

Inspired by Grafika

See Also:

Grafika

EglCore

public EglCore(android.opengl.EGLContext sharedContext)

Core EGL state (display, context, config).

The EGLContext must only be attached to one thread at a time. This class is not thread-safe.

Inspired by Grafika

See Also:

Grafika

EglCore

public EglCore()

Core EGL state (display, context, config).

The EGLContext must only be attached to one thread at a time. This class is not thread-safe.

Inspired by Grafika

See Also:

Grafika

Method Detail

getEglContext

public android.opengl.EGLContext getEglContext()

release

public void 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.

releaseSurface

public void releaseSurface(android.opengl.EGLSurface eglSurface)

Destroys the specified surface. Note the EGLSurface won't actually be destroyed if it's still current in a context.

createWindowSurface

public android.opengl.EGLSurface createWindowSurface(android.view.Surface surface)

Creates an EGL surface associated with a Surface.

If this is destined for MediaCodec, the EGLConfig should have the "recordable" attribute.

createOffscreenSurface

public android.opengl.EGLSurface createOffscreenSurface(int width,
                                                        int height)

Creates an EGL surface associated with an offscreen buffer.

makeCurrent

public boolean makeCurrent(android.opengl.EGLSurface eglSurface)

Makes our EGL context current, using the supplied surface for both "draw" and "read".

swapBuffers

public boolean swapBuffers(android.opengl.EGLSurface eglSurface)

Calls eglSwapBuffers. Use this to "publish" the current frame.

Returns:

false on failure

setPresentationTime

public void setPresentationTime(android.opengl.EGLSurface eglSurface,
                                long nanoseconds)

Sends the presentation time stamp to EGL. Time is expressed in nanoseconds.