com.sun.opengl.impl.x11

Class X11OffscreenGLContext

java.lang.Object

javax.media.opengl.GLContext

com.sun.opengl.impl.GLContextImpl

com.sun.opengl.impl.x11.X11GLContext

com.sun.opengl.impl.x11.X11OffscreenGLContext

public class X11OffscreenGLContext
extends X11GLContext

Field Summary

Fields inherited from class com.sun.opengl.impl.x11.X11GLContext

context, mostRecentDisplay

Fields inherited from class com.sun.opengl.impl.GLContextImpl

DEBUG, functionAvailability, gl, lock, NO_FREE, optimizationEnabled, VERBOSE

Fields inherited from class javax.media.opengl.GLContext

CONTEXT_CURRENT, CONTEXT_CURRENT_NEW, CONTEXT_NOT_CURRENT

Constructor Summary

Constructors

Constructor and Description
X11OffscreenGLContext(X11OffscreenGLDrawable drawable, GLContext shareWith)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	create() Helper routine which usually just turns around and calls createContext (except for pbuffers, which use a different context creation mechanism).
int	getOffscreenContextPixelDataType() Only called for offscreen contexts; needed by glReadPixels
int	getOffscreenContextReadBuffer()
protected int	makeCurrentImpl()
boolean	offscreenImageNeedsVerticalFlip() On some platforms the mismatch between OpenGL's coordinate system (origin at bottom left) and the window system's coordinate system (origin at top left) necessitates a vertical flip of pixels read from offscreen contexts.

Methods inherited from class com.sun.opengl.impl.x11.X11GLContext

bindPbufferToTexture, copy, createContext, destroyImpl, getContext, getGLDrawable, getGLXExt, getGLXExtProcAddressTable, getPlatformExtensionsString, getPlatformGLExtensions, glAllocateMemoryNV, isCreated, isExtensionAvailable, isFunctionAvailable, isOptimizable, lockToolkit, mapToRealGLExtensionName, mapToRealGLFunctionName, releaseImpl, releasePbufferFromTexture, resetGLFunctionAvailability, setSwapInterval, unlockToolkit

Methods inherited from class com.sun.opengl.impl.GLContextImpl

createGL, destroy, getBufferSizeTracker, getDeletedObjectTracker, getFloatingPointMode, getGL, getGLProcAddressTable, getObjectTracker, getThreadName, hasWaiters, isSynchronized, makeCurrent, release, resetProcAddressTable, setBufferSizeTracker, setDeletedObjectTracker, setGL, setObjectTracker, setSynchronized, toHexString, update

Methods inherited from class javax.media.opengl.GLContext

getCurrent, setCurrent

Methods inherited from class java.lang.Object

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

Constructor Detail

X11OffscreenGLContext

public X11OffscreenGLContext(X11OffscreenGLDrawable drawable,
                     GLContext shareWith)

Method Detail

getOffscreenContextPixelDataType

public int getOffscreenContextPixelDataType()

Description copied from class: GLContextImpl

Only called for offscreen contexts; needed by glReadPixels

Overrides:

getOffscreenContextPixelDataType in class X11GLContext

getOffscreenContextReadBuffer

public int getOffscreenContextReadBuffer()

Overrides:

getOffscreenContextReadBuffer in class X11GLContext

offscreenImageNeedsVerticalFlip

public boolean offscreenImageNeedsVerticalFlip()

Description copied from class: GLContextImpl

On some platforms the mismatch between OpenGL's coordinate system (origin at bottom left) and the window system's coordinate system (origin at top left) necessitates a vertical flip of pixels read from offscreen contexts.

Overrides:

offscreenImageNeedsVerticalFlip in class X11GLContext

makeCurrentImpl

protected int makeCurrentImpl()
                       throws GLException

Overrides:

makeCurrentImpl in class X11GLContext

Throws:

GLException

create

protected void create()

Description copied from class: X11GLContext

Helper routine which usually just turns around and calls createContext (except for pbuffers, which use a different context creation mechanism). Should only be called by X11GLContext.makeCurrentImpl().

Specified by:

create in class X11GLContext