org.lwjgl.opengl

Class SharedDrawable

java.lang.Object

org.lwjgl.opengl.SharedDrawable

public final class SharedDrawable
extends java.lang.Object

A Drawable implementation that shares its context with another Drawable. This is useful for background loading of resources. See org.lwjgl.test.opengl.multithread.BackgroundLoad for an example.

Author:

Spasi

Field Summary

Fields

Modifier and Type	Field and Description
protected org.lwjgl.opengl.ContextGL	context The OpenGL Context.
protected org.lwjgl.opengl.PeerInfo	peer_info Handle to the native GL rendering context
protected PixelFormat	pixel_format The PixelFormat used to create the drawable.

Constructor Summary

Constructors

Constructor and Description
SharedDrawable(Drawable drawable)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	checkDestroyed()
void	checkGLError()
org.lwjgl.opengl.ContextGL	createSharedContext() [INTERNAL USE ONLY] Creates a new Context that is shared with the Drawable's Context.
void	destroy() Destroys the Drawable.
org.lwjgl.opengl.ContextGL	getContext() [INTERNAL USE ONLY] Returns the Drawable's Context.
PixelFormatLWJGL	getPixelFormat()
void	initContext(float r, float g, float b)
boolean	isCurrent() Returns true if the Drawable's context is current in the current thread.
void	makeCurrent() Makes the Drawable's context current in the current thread.
void	releaseContext() If the Drawable's context is current in the current thread, no context will be current after a call to this method.
void	setCLSharingProperties(PointerBuffer properties) Sets the appropriate khr_gl_sharing properties in the target PointerBuffer, so that if it is used in a clCreateContext(FromType) call, the created CL context will be sharing objects with this Drawable's GL context.
void	setPixelFormat(PixelFormatLWJGL pf)
void	setPixelFormat(PixelFormatLWJGL pf, ContextAttribs attribs)
void	setSwapInterval(int swap_interval)
void	swapBuffers()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

pixel_format

protected PixelFormat pixel_format

The PixelFormat used to create the drawable.

peer_info

protected org.lwjgl.opengl.PeerInfo peer_info

Handle to the native GL rendering context

context

protected org.lwjgl.opengl.ContextGL context

The OpenGL Context.

Constructor Detail

SharedDrawable

public SharedDrawable(Drawable drawable)
               throws LWJGLException

Throws:

LWJGLException

Method Detail

createSharedContext

public org.lwjgl.opengl.ContextGL createSharedContext()

[INTERNAL USE ONLY] Creates a new Context that is shared with the Drawable's Context.

Returns:

a Context shared with the Drawable's Context.

setPixelFormat

public void setPixelFormat(PixelFormatLWJGL pf)
                    throws LWJGLException

Throws:

LWJGLException

setPixelFormat

public void setPixelFormat(PixelFormatLWJGL pf,
                  ContextAttribs attribs)
                    throws LWJGLException

Throws:

LWJGLException

getPixelFormat

public PixelFormatLWJGL getPixelFormat()

getContext

public org.lwjgl.opengl.ContextGL getContext()

[INTERNAL USE ONLY] Returns the Drawable's Context.

Returns:

the Drawable's Context

checkGLError

public void checkGLError()

setSwapInterval

public void setSwapInterval(int swap_interval)

swapBuffers

public void swapBuffers()
                 throws LWJGLException

Throws:

LWJGLException

initContext

public void initContext(float r,
               float g,
               float b)

isCurrent

public boolean isCurrent()
                  throws LWJGLException

Description copied from interface: Drawable

Returns true if the Drawable's context is current in the current thread.

Throws:

LWJGLException

makeCurrent

public void makeCurrent()
                 throws LWJGLException

Description copied from interface: Drawable

Makes the Drawable's context current in the current thread.

Throws:

LWJGLException

releaseContext

public void releaseContext()
                    throws LWJGLException

Description copied from interface: Drawable

If the Drawable's context is current in the current thread, no context will be current after a call to this method.

Throws:

LWJGLException

destroy

public void destroy()

Description copied from interface: Drawable

Destroys the Drawable.

setCLSharingProperties

public void setCLSharingProperties(PointerBuffer properties)
                            throws LWJGLException

Description copied from interface: Drawable

Sets the appropriate khr_gl_sharing properties in the target PointerBuffer, so that if it is used in a clCreateContext(FromType) call, the created CL context will be sharing objects with this Drawable's GL context. After a call to this method, the target buffer position will have advanced by 2 to 4 positions, depending on the implementation.

Parameters:

properties - The target properties buffer. It must have at least 4 positions remaining.

Throws:

LWJGLException

checkDestroyed

protected final void checkDestroyed()