GLContext (JOGL, NativeWindow and NEWT APIs)

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javax.media.opengl
Class GLContext

java.lang.Object
  javax.media.opengl.GLContext

public abstract class GLContext
extends Object
extends Object

Abstraction for an OpenGL rendering context. In order to perform OpenGL rendering, a context must be "made current" on the current thread. OpenGL rendering semantics specify that only one context may be current on the current thread at any given time, and also that a given context may be current on only one thread at any given time. Because components can be added to and removed from the component hierarchy at any time, it is possible that the underlying OpenGL context may need to be destroyed and recreated multiple times over the lifetime of a given component. This process is handled by the implementation, and the GLContext abstraction provides a stable object which clients can use to refer to a given context.

Field Summary
`static int`	`CONTEXT_CURRENT` Indicates that the context was made current during the last call to `makeCurrent`, value 1.
`static int`	`CONTEXT_CURRENT_NEW` Indicates that a newly-created context was made current during the last call to `makeCurrent`, value 2.
`static int`	`CONTEXT_NOT_CURRENT` Indicates that the context was not made current during the last call to `makeCurrent`, value 0.
`static int`	`CTX_OPTION_DEBUG` `ARB_create_context` related: flag debug.
`static boolean`	`DEBUG`
`static boolean`	`DEBUG_GL` Reflects property jogl.debug.DebugGL.
`static boolean`	`DEBUG_TRACE_SWITCH`
`static int[][]`	`ES_VERSIONS`
`static int[][]`	`GL_VERSIONS`
`static boolean`	`PROFILE_ALIASING` If `true` (default), bootstrapping the available GL profiles will use the highest compatible GL context for each profile, hence skipping querying lower profiles if a compatible higher one is found: 4.2-core -> 4.2-core, 3.3-core 4.2-comp -> 4.2-comp, 3.3-comp, 2 Otherwise the dedicated GL context would be queried and used: 4.2-core -> 4.2-core 3.3-core -> 3.3-core 4.2-comp -> 4.2-comp 3.3-comp -> 3.3-comp 3.0-comp -> 2 Using aliasing speeds up initialization about: Linux x86_64 - Nvidia: 28%, 700ms down to 500ms Linux x86_64 - AMD : 40%, 1500ms down to 900ms
`static boolean`	`TRACE_GL` Reflects property jogl.debug.TraceGL.
`static boolean`	`TRACE_SWITCH`
`static com.jogamp.common.util.VersionNumber`	`Version100` Version 1.00, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version110` Version 1.10, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version120` Version 1.20, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version130` Version 1.30, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version140` Version 1.40, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version150` Version 1.50, i.e.
`static com.jogamp.common.util.VersionNumber`	`Version300` Version 3.0.
`static com.jogamp.common.util.VersionNumber`	`Version310` Version 3.1.
`static com.jogamp.common.util.VersionNumber`	`Version320` Version 3.2.
`static com.jogamp.common.util.VersionNumber`	`Version430` Version 4.3.

Method Summary
`abstract void`	`addGLDebugListener(GLDebugListener listener)` Add `GLDebugListener`.
`StringBuilder`	`append(StringBuilder sb)`
`Object`	`attachObject(String name, Object obj)` Sets the attached user object for the given name to this GLContext.
`boolean`	`bindSwapBarrier(int group, int barrier)`
`static boolean`	`clipGLVersion(int ctxProfile, int[] major, int[] minor)` Clip the given GL version to the maximum known valid version if exceeding.
`abstract void`	`copy(GLContext source, int mask)` Copies selected groups of OpenGL state variables from the supplied source context into this one.
`static boolean`	`decrementGLVersion(int ctxProfile, int[] major, int[] minor)` Decrement the given GL version by one and return true if still valid, otherwise false.
`abstract void`	`destroy()` Destroys this OpenGL context and frees its associated resources.
`Object`	`detachObject(String name)`
`abstract void`	`enableGLDebugMessage(boolean enable)` Enables or disables the GLDebugOutput feature of extension `GLExtensions.ARB_debug_output` or `GLExtensions.AMD_debug_output`, if available.
`Object`	`getAttachedObject(String name)` Returns the attached user object for the given name to this GLContext.
`abstract int`	`getBoundFramebuffer(int target)` Return the framebuffer name bound to this context, see `GL.glBindFramebuffer(int, int)`.
`abstract int`	`getContextCreationFlags()`
`List<GLContext>`	`getCreatedShares()` Returns a new list of created GLContext shared with this GLContext.
`static GLContext`	`getCurrent()` Returns this thread current context.
`static GL`	`getCurrentGL()` Returns the GL object bound to this thread current context.
`abstract int`	`getDefaultDrawFramebuffer()` Return the default draw framebuffer name.
`abstract int`	`getDefaultPixelDataFormat()` Get the default pixel data format, as required by e.g.
`abstract int`	`getDefaultPixelDataType()` Get the default pixel data type, as required by e.g.
`abstract int`	`getDefaultReadBuffer()` Returns the default color buffer within the current bound `getDefaultReadFramebuffer()`, i.e.
`abstract int`	`getDefaultReadFramebuffer()` Return the default read framebuffer name.
`abstract int`	`getDefaultVAO()` If this GLContext does not implement a default VAO, see `hasNoDefaultVAO()`, an own default VAO will be created and bound at context creation.
`List<GLContext>`	`getDestroyedShares()` Returns a new list of destroyed GLContext shared with this GLContext.
`abstract GL`	`getGL()` Returns the GL pipeline object for this GLContext.
`abstract String`	`getGLDebugMessageExtension()`
`abstract GLDrawable`	`getGLDrawable()` Returns the write-drawable this context uses for framebuffer operations.
`abstract int`	`getGLExtensionCount()` Returns the number of OpenGL extensions
`abstract String`	`getGLExtensionsString()` Returns a non-null (but possibly empty) string containing the space-separated list of available extensions.
`abstract GLDrawable`	`getGLReadDrawable()` Returns the read-Drawable this context uses for read framebuffer operations.
`com.jogamp.common.util.VersionNumber`	`getGLSLVersionNumber()` Returns the matching GLSL version number, queried by this context GL via `GL2ES2.GL_SHADING_LANGUAGE_VERSION` if ≥ ES2.0 or GL2.0, otherwise a static match is being utilized.
`String`	`getGLSLVersionString()` Returns the GLSL version string as to be used in a shader program, including a terminating newline '\n', i.e.
`com.jogamp.common.util.VersionNumberString`	`getGLVendorVersionNumber()` Returns the vendor's version, i.e.
`String`	`getGLVersion()` Returns a valid OpenGL version string, ie
`com.jogamp.common.util.VersionNumber`	`getGLVersionNumber()` Returns this context OpenGL version.
`long`	`getHandle()` Returns the underlying native OpenGL context handle
`static int`	`getMaxMajor(int ctxProfile)`
`static int`	`getMaxMinor(int ctxProfile, int major)`
`int`	`getMaxRenderbufferSamples()` Returns the maximum number of FBO RENDERBUFFER samples if `full FBO is supported`, otherwise false.
`abstract int`	`getPlatformExtensionCount()` Returns the number of platform extensions
`abstract String`	`getPlatformExtensionsString()` Returns a non-null (but possibly empty) string containing the space-separated list of available platform-dependent (e.g., WGL, GLX) extensions.
`GLRendererQuirks`	`getRendererQuirks()` Returns the instance of `GLRendererQuirks`, allowing one to determine workarounds.
`abstract GL`	`getRootGL()` Returns the implementing root GL instance of this GLContext's GL object, considering a wrapped pipelined hierarchy, see `GLBase.getDownstreamGL()`.
`int`	`getSwapGroup()`
`int`	`getSwapInterval()` Return the current swap interval.
`abstract void`	`glDebugMessageControl(int source, int type, int severity, int count, int[] ids, int ids_offset, boolean enabled)` Generic entry for `GL2ES2.glDebugMessageControl(int, int, int, int, int[], int, boolean)` and `GL2GL3.glDebugMessageEnableAMD(int, int, int, int[], int, boolean)` of the GLDebugOutput feature.
`abstract void`	`glDebugMessageControl(int source, int type, int severity, int count, IntBuffer ids, boolean enabled)` Generic entry for `GL2ES2.glDebugMessageControl(int, int, int, int, IntBuffer, boolean)` and `GL2GL3.glDebugMessageEnableAMD(int, int, int, IntBuffer, boolean)` of the GLDebugOutput feature.
`abstract void`	`glDebugMessageInsert(int source, int type, int id, int severity, String buf)` Generic entry for `GL2ES2.glDebugMessageInsert(int, int, int, int, int, String)` and `GL2GL3.glDebugMessageInsertAMD(int, int, int, int, String)` of the GLDebugOutput feature.
`boolean`	`hasBasicFBOSupport()` Returns `true` if basic FBO support is available, otherwise `false`.
`boolean`	`hasFP32CompatAPI()` Returns `true` if `OES_single_precision`, fp32, fixed function point (FFP) compatibility entry points available, otherwise `false`.
`boolean`	`hasFullFBOSupport()` Returns `true` if full FBO support is available, otherwise `false`.
`boolean`	`hasGLSL()`
`boolean`	`hasNoDefaultVAO()` Indicates whether this GLContext's native profile does not implement a default vertex array object (VAO), starting w/ OpenGL 3.1 core and GLES3.
`boolean`	`hasRendererQuirk(int quirk)` Returns true if the `quirk` exist in `getRendererQuirks()`, otherwise false.
`boolean`	`isCPUDataSourcingAvail()` Indicates whether this GLContext allows CPU data sourcing (indices, vertices ..) as opposed to using a GPU buffer source (VBO), e.g.
`boolean`	`isCreated()` Indicates whether the underlying native OpenGL context has been created.
`boolean`	`isCreatedWithARBMethod()`
`boolean`	`isCurrent()`
`abstract boolean`	`isExtensionAvailable(String glExtensionName)` Returns true if the specified OpenGL extension can be successfully called using this GL context given the current host (OpenGL client) and display (OpenGL server) configuration.
`static boolean`	`isFBOAvailable(AbstractGraphicsDevice device, GLProfile glp)` Returns true if it is possible to create an framebuffer object (FBO).
`abstract boolean`	`isFunctionAvailable(String glFunctionName)` Returns true if the specified OpenGL core- or extension-function can be successfully called using this GL context given the current host (OpenGL client) and display (OpenGL server) configuration.
`boolean`	`isGL2()` Indicates whether this GLContext is capable of GL2.
`static boolean`	`isGL2Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGL2ES1()` Indicates whether this GLContext is capable of GL2ES1.
`boolean`	`isGL2ES2()` Indicates whether this GLContext is capable of GL2ES2.
`boolean`	`isGL2ES3()` Indicates whether this GLContext is capable of GL2ES3.
`boolean`	`isGL2GL3()` Indicates whether this GLContext is capable of GL2GL3.
`boolean`	`isGL3()` Indicates whether this GLContext is capable of GL3.
`static boolean`	`isGL3Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGL3bc()` Indicates whether this GLContext is capable of GL3bc.
`static boolean`	`isGL3bcAvailable(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGL3core()` Indicates whether this GLContext uses a GL3 core profile.
`boolean`	`isGL3ES3()` Indicates whether this GLContext is capable of GL3ES3.
`boolean`	`isGL4()` Indicates whether this GLContext is capable of GL4.
`static boolean`	`isGL4Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGL4bc()` Indicates whether this GLContext is capable of GL4bc.
`static boolean`	`isGL4bcAvailable(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGL4core()` Indicates whether this GLContext uses a GL4 core profile.
`boolean`	`isGL4ES3()` Returns true if this profile is capable of GL4ES3, i.e.
`boolean`	`isGLCompatibilityProfile()`
`boolean`	`isGLcore()` Indicates whether this GLContext uses a GL core profile.
`boolean`	`isGLCoreProfile()`
`boolean`	`isGLDebugEnabled()`
`abstract boolean`	`isGLDebugMessageEnabled()`
`abstract boolean`	`isGLDebugSynchronous()`
`boolean`	`isGLES()` Indicates whether this GLContext is capable of GLES.
`boolean`	`isGLES1()` Indicates whether this GLContext is capable of GLES1.
`static boolean`	`isGLES1Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGLES2()` Indicates whether this GLContext is capable of GLES2.
`static boolean`	`isGLES2Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGLES2Compatible()`
`boolean`	`isGLES3()` Indicates whether this GLContext is capable of GLES3.
`static boolean`	`isGLES3Available(AbstractGraphicsDevice device, boolean[] isHardware)`
`boolean`	`isGLES3Compatible()` Return true if this context is an ES3 context or implements the extension `GL_ARB_ES3_compatibility`, otherwise false.
`static boolean`	`isGLES3CompatibleAvailable(AbstractGraphicsDevice device)` Returns true if a ES3 compatible profile is available, i.e.
`boolean`	`isGLESProfile()`
`boolean`	`isGLForwardCompatible()`
`abstract boolean`	`isGLReadDrawableAvailable()` Query whether using a distinguished read-drawable is supported.
`boolean`	`isHardwareRasterizer()`
`static int`	`isHardwareRasterizer(AbstractGraphicsDevice device, GLProfile glp)`
`boolean`	`isNPOTTextureAvailable()` Note: The GL impl.
`boolean`	`isShared()` Returns true if this GLContext is shared, otherwise false.
`boolean`	`isTextureFormatBGRA8888Available()`
`static boolean`	`isValidGLVersion(int ctxProfile, int major, int minor)` Returns true, if the major.minor is not inferior to the lowest valid version and does not exceed the highest known major number by more than one.
`boolean`	`joinSwapGroup(int group)`
`abstract int`	`makeCurrent()` Makes this GLContext current on the calling thread.
`static String`	`makeCurrentResultToString(int res)` Returns a String representation of the `makeCurrent()` result.
`boolean`	`queryMaxSwapGroups(int[] maxGroups, int maxGroups_offset, int[] maxBarriers, int maxBarriers_offset)`
`abstract void`	`release()` Releases control of this GLContext from the current thread.
`abstract void`	`removeGLDebugListener(GLDebugListener listener)` Remove `GLDebugListener`.
`abstract void`	`setContextCreationFlags(int flags)`
`abstract GL`	`setGL(GL gl)` Sets the GL pipeline object for this GLContext.
`abstract void`	`setGLDebugSynchronous(boolean synchronous)` Enables or disables the synchronous debug behavior via `glEnable/glDisable(GL_DEBUG_OUTPUT_SYNCHRONOUS)`, if extension is `GLExtensions.ARB_debug_output`.
`abstract GLDrawable`	`setGLDrawable(GLDrawable readWrite, boolean setWriteOnly)` Sets the read/write drawable for framebuffer operations.
`abstract GLDrawable`	`setGLReadDrawable(GLDrawable read)` Set the read-Drawable for read framebuffer operations. The caller should query if this feature is supported via `isGLReadDrawableAvailable()`.
`boolean`	`setSwapInterval(int interval)` Set the swap interval of the current context and attached drawable.
`String`	`toString()` Classname, GL, GLDrawable
`void`	`validateCurrent()`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

DEBUG

public static final boolean DEBUG

TRACE_SWITCH

public static final boolean TRACE_SWITCH

DEBUG_TRACE_SWITCH

public static final boolean DEBUG_TRACE_SWITCH

PROFILE_ALIASING

public static final boolean PROFILE_ALIASING

If true (default), bootstrapping the available GL profiles will use the highest compatible GL context for each profile, hence skipping querying lower profiles if a compatible higher one is found:

4.2-core -> 4.2-core, 3.3-core
4.2-comp -> 4.2-comp, 3.3-comp, 2

Otherwise the dedicated GL context would be queried and used:

4.2-core -> 4.2-core
3.3-core -> 3.3-core
4.2-comp -> 4.2-comp
3.3-comp -> 3.3-comp
3.0-comp -> 2

Using aliasing speeds up initialization about:

Linux x86_64 - Nvidia: 28%, 700ms down to 500ms
Linux x86_64 - AMD : 40%, 1500ms down to 900ms

Can be turned off with property jogl.debug.GLContext.NoProfileAliasing.

DEBUG_GL

public static final boolean DEBUG_GL

Reflects property jogl.debug.DebugGL. If true, the debug pipeline is enabled at context creation.

TRACE_GL

public static final boolean TRACE_GL

Reflects property jogl.debug.TraceGL. If true, the trace pipeline is enabled at context creation.

CONTEXT_NOT_CURRENT

public static final int CONTEXT_NOT_CURRENT

Indicates that the context was not made current during the last call to makeCurrent, value 0.

See Also:: Constant Field Values

CONTEXT_CURRENT

public static final int CONTEXT_CURRENT

Indicates that the context was made current during the last call to makeCurrent, value 1.

See Also:: Constant Field Values

CONTEXT_CURRENT_NEW

public static final int CONTEXT_CURRENT_NEW

Indicates that a newly-created context was made current during the last call to makeCurrent, value 2.

See Also:: Constant Field Values

Version100

public static final com.jogamp.common.util.VersionNumber Version100

Version 1.00, i.e. GLSL 1.00 for ES 2.0.

Version110

public static final com.jogamp.common.util.VersionNumber Version110

Version 1.10, i.e. GLSL 1.10 for GL 2.0.

Version120

public static final com.jogamp.common.util.VersionNumber Version120

Version 1.20, i.e. GLSL 1.20 for GL 2.1.

Version130

public static final com.jogamp.common.util.VersionNumber Version130

Version 1.30, i.e. GLSL 1.30 for GL 3.0.

Version140

public static final com.jogamp.common.util.VersionNumber Version140

Version 1.40, i.e. GLSL 1.40 for GL 3.1.

Version150

public static final com.jogamp.common.util.VersionNumber Version150

Version 1.50, i.e. GLSL 1.50 for GL 3.2.

Version300

public static final com.jogamp.common.util.VersionNumber Version300

Version 3.0. As an OpenGL version, it qualifies for desktop isGL2() only, or ES 3.0. Or GLSL 3.00 for ES 3.0.

Version310

public static final com.jogamp.common.util.VersionNumber Version310

Version 3.1. As an OpenGL version, it qualifies for isGL3core(), isGL3bc() and isGL3()

Version320

public static final com.jogamp.common.util.VersionNumber Version320

Version 3.2. As an OpenGL version, it qualifies for geometry shader

Version430

public static final com.jogamp.common.util.VersionNumber Version430

Version 4.3. As an OpenGL version, it qualifies for GL_ARB_ES3_compatibility

CTX_OPTION_DEBUG

public static final int CTX_OPTION_DEBUG

ARB_create_context related: flag debug. Cache key value. See setContextCreationFlags(int), GLAutoDrawable.setContextCreationFlags(int), getAvailableContextProperties(AbstractGraphicsDevice, GLProfile).

See Also:: Constant Field Values

GL_VERSIONS

public static final int[][] GL_VERSIONS

ES_VERSIONS

public static final int[][] ES_VERSIONS

Method Detail

isShared

public final boolean isShared()

Returns true if this GLContext is shared, otherwise false.

getCreatedShares

public final List<GLContext> getCreatedShares()

Returns a new list of created GLContext shared with this GLContext.

getDestroyedShares

public final List<GLContext> getDestroyedShares()

Returns a new list of destroyed GLContext shared with this GLContext.

getRendererQuirks

public final GLRendererQuirks getRendererQuirks()

Returns the instance of GLRendererQuirks, allowing one to determine workarounds.

Returns:: instance of GLRendererQuirks if context was made current once, otherwise null.

hasRendererQuirk

public final boolean hasRendererQuirk(int quirk)
                               throws IllegalArgumentException

Returns true if the quirk exist in getRendererQuirks(), otherwise false.

Convenience method for:

    final GLRendererQuirks glrq = ctx.getRendererQuirks();
    boolean hasQuirk = null != glrq ? glrq.exist(quirk) : false ;

Parameters:: quirk - the quirk to be tested, e.g. GLRendererQuirks.NoDoubleBufferedPBuffer.
Throws:: IllegalArgumentException - if the quirk is out of range

setGLDrawable

public abstract GLDrawable setGLDrawable(GLDrawable readWrite,
                                         boolean setWriteOnly)

Sets the read/write drawable for framebuffer operations.

If the arguments reflect the current state of this context this method is a no-operation and returns the old and current GLDrawable.

If the context was current on this thread, it is being released before switching the drawable and made current afterwards. However the user shall take extra care that not other thread attempts to make this context current. Otherwise a race condition may happen.

Parameters:: readWrite - The read/write drawable for framebuffer operations, maybe null to remove association.; setWriteOnly - Only change the write-drawable, if setWriteOnly is true and if the read-drawable differs from the write-drawable. Otherwise set both drawables, read and write.
Returns:: The previous read/write drawable
Throws:: GLException - in case null is being passed or this context is made current on another thread.
See Also:: isGLReadDrawableAvailable(), setGLReadDrawable(GLDrawable), getGLReadDrawable(), setGLDrawable(GLDrawable, boolean), getGLDrawable()

getGLDrawable

public abstract GLDrawable getGLDrawable()

Returns the write-drawable this context uses for framebuffer operations.

If the read-drawable has not been changed manually via setGLReadDrawable(GLDrawable), it equals to the write-drawable (default).

See Also:: setGLDrawable(GLDrawable, boolean), setGLReadDrawable(GLDrawable)

isGLReadDrawableAvailable

public abstract boolean isGLReadDrawableAvailable()

Query whether using a distinguished read-drawable is supported.

Returns:: true if using a read-drawable is supported with your driver/OS, otherwise false.

setGLReadDrawable

public abstract GLDrawable setGLReadDrawable(GLDrawable read)

Set the read-Drawable for read framebuffer operations.
The caller should query if this feature is supported via isGLReadDrawableAvailable().

Parameters:: read - the read-drawable for read framebuffer operations. If null is passed, the default write drawable will be set.
Returns:: the previous read-drawable
Throws:: GLException - in case a read drawable is not supported or this context is made current on another thread.
See Also:: isGLReadDrawableAvailable(), getGLReadDrawable()

getGLReadDrawable

public abstract GLDrawable getGLReadDrawable()

Returns the read-Drawable this context uses for read framebuffer operations.

If the read-drawable has not been changed manually via setGLReadDrawable(GLDrawable), it equals to the write-drawable (default).

See Also:: isGLReadDrawableAvailable(), setGLReadDrawable(GLDrawable), getGLReadDrawable()

makeCurrent

public abstract int makeCurrent()
                         throws GLException

Makes this GLContext current on the calling thread.

Recursive call to makeCurrent() and hence release() are supported.

There are two return values that indicate success and one that indicates failure.

A return value of CONTEXT_CURRENT_NEW indicates that that context has been made current for the 1st time, or that the state of the underlying context or drawable has changed since the last time this context was current. In this case, the application may wish to initialize the render state.

A return value of CONTEXT_CURRENT indicates that the context has been made current, with its previous state restored.

If the context could not be made current (for example, because the underlying drawable has not ben realized on the display) , a value of CONTEXT_NOT_CURRENT is returned.

This method is blocking, i.e. waits until another thread has released the context.

The drawable's surface is being locked at entry and unlocked at release()

Returns:

CONTEXT_CURRENT_NEW if the context was successfully made current the 1st time,
CONTEXT_CURRENT if the context was successfully made current,
CONTEXT_NOT_CURRENT if the context could not be made current.

Throws:

GLException - if synchronization is disabled and the context is current on another thread, or because the context could not be created or made current due to non-recoverable, window system-specific errors.

release

public abstract void release()
                      throws GLException

Releases control of this GLContext from the current thread.

Recursive call to release() and hence makeCurrent() are supported.

The drawable's surface is being unlocked at exit, assumed to be locked by makeCurrent().

Throws:: GLException - if the context had not previously been made current on the current thread

copy

public abstract void copy(GLContext source,
                          int mask)
                   throws GLException

Copies selected groups of OpenGL state variables from the supplied source context into this one. The mask parameter indicates which groups of state variables are to be copied. mask contains the bitwise OR of the same symbolic names that are passed to the GL command glPushAttrib. The single symbolic constant GL_ALL_ATTRIB_BITS can be used to copy the maximum possible portion of rendering state.

Not all values for GL state can be copied. For example, pixel pack and unpack state, render mode state, and select and feedback state are not copied. The state that can be copied is exactly the state that is manipulated by the GL command glPushAttrib.

On most platforms, this context may not be current to any thread, including the calling thread, when this method is called. Some platforms have additional requirements such as whether this context or the source context must occasionally be made current in order for the results of the copy to be seen; these requirements are beyond the scope of this specification.

Parameters:: source - the source OpenGL context from which to copy state; mask - a mask of symbolic names indicating which groups of state to copy
Throws:: GLException - if an OpenGL-related error occurred

getCurrentGL

public static GL getCurrentGL()
                       throws GLException

Returns the GL object bound to this thread current context. If no context is current, throw an GLException

Returns:: the current context's GL object on this thread
Throws:: GLException - if no context is current

getCurrent

public static GLContext getCurrent()

Returns this thread current context. If no context is current, returns null.

Returns:: the context current on this thread, or null if no context is current.

isCurrent

public final boolean isCurrent()

Returns:: true if this GLContext is current on this thread

validateCurrent

public final void validateCurrent()
                           throws GLException

Throws:: GLException - if this GLContext is not current on this thread

makeCurrentResultToString

public static final String makeCurrentResultToString(int res)

Returns a String representation of the makeCurrent() result.

destroy

public abstract void destroy()

Destroys this OpenGL context and frees its associated resources.

The context may be current w/o recursion when calling destroy(), in which case this method destroys the context and releases the lock.

getRootGL

public abstract GL getRootGL()

Returns the implementing root GL instance of this GLContext's GL object, considering a wrapped pipelined hierarchy, see GLBase.getDownstreamGL().

Throws:: GLException - if the root instance is not a GL implementation
See Also:: GLBase.getRootGL(), GLBase.getDownstreamGL(), getGL(), setGL(GL)

getGL

public abstract GL getGL()

Returns the GL pipeline object for this GLContext.

Returns:: the aggregated GL instance, or null if this context was not yet made current.

setGL

public abstract GL setGL(GL gl)

Sets the GL pipeline object for this GLContext.

Returns:: the set GL pipeline or null if not successful

getHandle

public final long getHandle()

Returns the underlying native OpenGL context handle

isCreated

public final boolean isCreated()

Indicates whether the underlying native OpenGL context has been created.

getAttachedObject

public final Object getAttachedObject(String name)

Returns the attached user object for the given name to this GLContext.

attachObject

public final Object attachObject(String name,
                                 Object obj)

Sets the attached user object for the given name to this GLContext. Returns the previously set object or null.

detachObject

public final Object detachObject(String name)

toString

public String toString()

Classname, GL, GLDrawable

Overrides:: toString in class Object

append

public final StringBuilder append(StringBuilder sb)

isFunctionAvailable

public abstract boolean isFunctionAvailable(String glFunctionName)

Returns true if the specified OpenGL core- or extension-function can be successfully called using this GL context given the current host (OpenGL client) and display (OpenGL server) configuration. See GLBase.isFunctionAvailable(String) for more details.

Parameters:: glFunctionName - the name of the OpenGL function (e.g., use "glPolygonOffsetEXT" or "glPolygonOffset" to check if the GL.glPolygonOffset(float,float) is available).

isExtensionAvailable

public abstract boolean isExtensionAvailable(String glExtensionName)

Returns true if the specified OpenGL extension can be successfully called using this GL context given the current host (OpenGL client) and display (OpenGL server) configuration. See GLBase.isExtensionAvailable(String) for more details.

Parameters:: glExtensionName - the name of the OpenGL extension (e.g., "GL_VERTEX_PROGRAM_ARB").

getPlatformExtensionCount

public abstract int getPlatformExtensionCount()

Returns the number of platform extensions

getPlatformExtensionsString

public abstract String getPlatformExtensionsString()

Returns a non-null (but possibly empty) string containing the space-separated list of available platform-dependent (e.g., WGL, GLX) extensions. Can only be called while this context is current.

getGLExtensionCount

public abstract int getGLExtensionCount()

Returns the number of OpenGL extensions

getGLExtensionsString

public abstract String getGLExtensionsString()

Returns a non-null (but possibly empty) string containing the space-separated list of available extensions. Can only be called while this context is current. This is equivalent to glGetString(GL_EXTENSIONS)

getContextCreationFlags

public abstract int getContextCreationFlags()

Returns:: Additional context creation flags, supported: CTX_OPTION_DEBUG.

setContextCreationFlags

public abstract void setContextCreationFlags(int flags)

Parameters:: flags - Additional context creation flags, supported: CTX_OPTION_DEBUG. Unsupported flags are masked out. Only affects this context state if not created yet via makeCurrent().
See Also:: enableGLDebugMessage(boolean), GLAutoDrawable.setContextCreationFlags(int)

getGLVersion

public final String getGLVersion()

Returns a valid OpenGL version string, ie

     major.minor ([option]?[options,]*) - gl-version

options
- ES profile ES profile
- Compatibility profile Compatibility profile including fixed function pipeline and deprecated functionality
- Core profile Core profile
- forward Forward profile excluding deprecated functionality
- arb refers to an ARB_create_context created context
- debug refers to a debug context
- ES2 compatible refers to an ES2 compatible implementation
- software refers to a software implementation of the rasterizer
- hardware refers to a hardware implementation of the rasterizer
gl-version the GL_VERSION string

e.g.:


row 2, cell 1	row 2, cell 2

	ES2	`2.0 (ES profile, ES2 compatible, hardware) - 2.0 ES Profile`
ATI	GL2	`3.0 (Compatibility profile, arb, hardware) - 3.2.9704 Compatibility Profile Context`
ATI	GL3	`3.3 (Core profile, any, new, hardware) - 1.4 (3.2.9704 Compatibility Profile Context)`
ATI	GL3bc	`3.3 (Compatibility profile, arb, hardware) - 1.4 (3.2.9704 Compatibility Profile Context)`
NV	GL2	`3.0 (Compatibility profile, arb, hardware) - 3.0.0 NVIDIA 195.36.07.03`
NV	GL3	`3.3 (Core profile, arb, hardware) - 3.3.0 NVIDIA 195.36.07.03`
NV	GL3bc	`3.3 (Compatibility profile, arb, hardware) - 3.3.0 NVIDIA 195.36.07.03`
NV	GL2	`3.0 (Compatibility profile, arb, ES2 compatible, hardware) - 3.0.0 NVIDIA 290.10`

getGLVersionNumber

public final com.jogamp.common.util.VersionNumber getGLVersionNumber()

Returns this context OpenGL version.

See Also:: getGLSLVersionNumber()

getGLVendorVersionNumber

public final com.jogamp.common.util.VersionNumberString getGLVendorVersionNumber()

Returns the vendor's version, i.e. version number at the end of GL_VERSION not being the GL version.

In case no such version exists within GL_VERSION, the zero version instance is returned.

The vendor's version is usually the vendor's OpenGL driver version.

isGLCompatibilityProfile

public final boolean isGLCompatibilityProfile()

isGLCoreProfile

public final boolean isGLCoreProfile()

isGLESProfile

public final boolean isGLESProfile()

isGLForwardCompatible

public final boolean isGLForwardCompatible()

isGLDebugEnabled

public final boolean isGLDebugEnabled()

isCreatedWithARBMethod

public final boolean isCreatedWithARBMethod()

getGLSLVersionNumber

public final com.jogamp.common.util.VersionNumber getGLSLVersionNumber()

Returns the matching GLSL version number, queried by this context GL via GL2ES2.GL_SHADING_LANGUAGE_VERSION if ≥ ES2.0 or GL2.0, otherwise a static match is being utilized.

The context must have been current once, otherwise the zero version instance is returned.

Examples w/ major.minor:

    1.00 (ES 2.0), 3.00 (ES 3.0)
    1.10 (GL 2.0), 1.20 (GL 2.1), 1.50 (GL 3.2),
    3.30 (GL 3.3), 4.00 (GL 4.0), 4.10 (GL 4.1), 4.20 (GL 4.2)

Matching could also refer to the maximum GLSL version usable by this context since normal GL implementations are capable of using a lower GLSL version as well. The latter is not true on OSX w/ a GL3 context.

Returns:: GLSL version number if context has been made current at least once, otherwise the zero version instance is returned.
See Also:: getGLVersionNumber()

getGLSLVersionString

public final String getGLSLVersionString()

Returns the GLSL version string as to be used in a shader program, including a terminating newline '\n', i.e. for desktop

    #version 110
    ..
    #version 150
    #version 330
    ...

And for ES:

    #version 100
    #version 300 es
    ..

If context has not been made current yet, a string of zero length is returned.

See Also:: getGLSLVersionNumber()

isGLES2Compatible

public final boolean isGLES2Compatible()

Returns:: true if this context is an ES2 context or implements the extension GL_ARB_ES3_compatibility or GL_ARB_ES2_compatibility, otherwise false

isGLES3Compatible

public final boolean isGLES3Compatible()

Return true if this context is an ES3 context or implements the extension GL_ARB_ES3_compatibility, otherwise false.

Includes [ GL ≥ 4.3, GL ≥ 3.1 w/ GL_ARB_ES3_compatibility and GLES3 ]

isHardwareRasterizer

public final boolean isHardwareRasterizer()

Returns:: true if impl. is a hardware rasterizer, otherwise false.
See Also:: isHardwareRasterizer(AbstractGraphicsDevice, GLProfile), GLProfile.isHardwareRasterizer()

hasGLSL

public final boolean hasGLSL()

Returns:: true if context supports GLSL, i.e. is either isGLES3(), isGLES2(), isGL3() or isGL2() and major-version > 1.
See Also:: GLProfile.hasGLSL()

hasBasicFBOSupport

public final boolean hasBasicFBOSupport()

Returns true if basic FBO support is available, otherwise false.

Basic FBO is supported if the context is either GL-ES >= 2.0, GL >= 3.0 [core, compat] or implements the extensions GL_ARB_ES2_compatibility, GL_ARB_framebuffer_object, GL_EXT_framebuffer_object or GL_OES_framebuffer_object.

Basic FBO support may only include one color attachment and no multisampling, as well as limited internal formats for renderbuffer.

See Also:: CTX_IMPL_FBO

hasFullFBOSupport

public final boolean hasFullFBOSupport()

Returns true if full FBO support is available, otherwise false.

Full FBO is supported if the context is either GL >= 3.0 [ES, core, compat] or implements the extensions ARB_framebuffer_object, or all of EXT_framebuffer_object, EXT_framebuffer_multisample, EXT_framebuffer_blit, GL_EXT_packed_depth_stencil.

Full FBO support includes multiple color attachments and multisampling.

hasFP32CompatAPI

public final boolean hasFP32CompatAPI()

Returns true if OES_single_precision, fp32, fixed function point (FFP) compatibility entry points available, otherwise false.

See Also:: CTX_IMPL_FP32_COMPAT_API

getMaxRenderbufferSamples

public final int getMaxRenderbufferSamples()

Returns the maximum number of FBO RENDERBUFFER samples if full FBO is supported, otherwise false.

isNPOTTextureAvailable

public boolean isNPOTTextureAvailable()

Note: The GL impl. may return a const value, ie GLBase.isNPOTTextureAvailable() always returns true.

isTextureFormatBGRA8888Available

public boolean isTextureFormatBGRA8888Available()

isGL4bc

public final boolean isGL4bc()

Indicates whether this GLContext is capable of GL4bc.

Includes [ GL4bc ].

See Also:: GLProfile.isGL4bc()

isGL4

public final boolean isGL4()

Indicates whether this GLContext is capable of GL4.

Includes [ GL4bc, GL4 ].

See Also:: GLProfile.isGL4()

isGL4core

public final boolean isGL4core()

Indicates whether this GLContext uses a GL4 core profile.

Includes [ GL4 ].

isGL3bc

public final boolean isGL3bc()

Indicates whether this GLContext is capable of GL3bc.

Includes [ GL4bc, GL3bc ].

See Also:: GLProfile.isGL3bc()

isGL3

public final boolean isGL3()

Indicates whether this GLContext is capable of GL3.

Includes [ GL4bc, GL4, GL3bc, GL3 ].

See Also:: GLProfile.isGL3()

isGL3core

public final boolean isGL3core()

Indicates whether this GLContext uses a GL3 core profile.

Includes [ GL4, GL3 ].

isGLcore

public final boolean isGLcore()

Indicates whether this GLContext uses a GL core profile.

Includes [ GL4, GL3, GLES3, GLES2 ].

isCPUDataSourcingAvail

public final boolean isCPUDataSourcingAvail()

Indicates whether this GLContext allows CPU data sourcing (indices, vertices ..) as opposed to using a GPU buffer source (VBO), e.g. GL2ES1.glDrawElements(int, int, int, java.nio.Buffer).

Includes [GL2ES1, GLES2] == [ GL4bc, GL3bc, GL2, GLES1, GL2ES1, GLES2 ].

See Bug 852 - https://jogamp.org/bugzilla/show_bug.cgi?id=852

hasNoDefaultVAO

public final boolean hasNoDefaultVAO()

Indicates whether this GLContext's native profile does not implement a default vertex array object (VAO), starting w/ OpenGL 3.1 core and GLES3.

Includes [ GL4, GL3, GLES3 ].

     Due to GL 3.1 core spec: E.1. DEPRECATED AND REMOVED FEATURES (p 296),
            GL 3.2 core spec: E.2. DEPRECATED AND REMOVED FEATURES (p 331)
     there is no more default VAO buffer 0 bound, hence generating and binding one
     to avoid INVALID_OPERATION at VertexAttribPointer.
     More clear is GL 4.3 core spec: 10.4 (p 307).

     GLES3 is included, since upcoming ES releases > 3.0 may behave the same:
            GL ES 3.0 spec F.1. Legacy Features (p 322).

If no default VAO is implemented in the native OpenGL profile, an own default VAO is being used, see getDefaultVAO().

See Also:: getDefaultVAO()

getDefaultVAO

public abstract int getDefaultVAO()

If this GLContext does not implement a default VAO, see hasNoDefaultVAO(), an own default VAO will be created and bound at context creation.

If this GLContext does implement a default VAO, i.e. hasNoDefaultVAO() returns false, this method returns 0.

Otherwise this method returns the VAO object name representing this GLContext's own default VAO.

See Also:: hasNoDefaultVAO()

isGL2

public final boolean isGL2()

Indicates whether this GLContext is capable of GL2.

Includes [ GL4bc, GL3bc, GL2 ].

See Also:: GLProfile.isGL2()

isGL2GL3

public final boolean isGL2GL3()

Indicates whether this GLContext is capable of GL2GL3.

Includes [ GL4bc, GL4, GL3bc, GL3, GL2, GL2GL3 ].

See Also:: GLProfile.isGL2GL3()

isGLES1

public final boolean isGLES1()

Indicates whether this GLContext is capable of GLES1.

Includes [ GLES1 ].

See Also:: GLProfile.isGLES1()

isGLES2

public final boolean isGLES2()

Indicates whether this GLContext is capable of GLES2.

Includes [ GLES2, GLES3 ].

See Also:: GLProfile.isGLES2()

isGLES3

public final boolean isGLES3()

Indicates whether this GLContext is capable of GLES3.

Includes [ GLES3 ].

See Also:: GLProfile.isGLES3()

isGLES

public final boolean isGLES()

Indicates whether this GLContext is capable of GLES.

Includes [ GLES3, GLES1, GLES2 ].

See Also:: GLProfile.isGLES()

isGL2ES1

public final boolean isGL2ES1()

Indicates whether this GLContext is capable of GL2ES1.

Includes [ GL4bc, GL3bc, GL2, GLES1, GL2ES1 ].

See Also:: GLProfile.isGL2ES1()

isGL2ES2

public final boolean isGL2ES2()

Indicates whether this GLContext is capable of GL2ES2.

Includes [ GL4bc, GL4, GL3bc, GL3, GLES3, GL2, GL2GL3, GL2ES2, GLES2 ].

See Also:: GLProfile.isGL2ES2()

isGL2ES3

public final boolean isGL2ES3()

Indicates whether this GLContext is capable of GL2ES3.

Includes [ GL4bc, GL4, GL3bc, GL3, GLES3, GL3ES3, GL2, GL2GL3 ].

See Also:: GLProfile.isGL2ES3(), isGL3ES3(), isGL2GL3()

isGL3ES3

public final boolean isGL3ES3()

Indicates whether this GLContext is capable of GL3ES3.

Includes [ GL4bc, GL4, GL3bc, GL3, GLES3 ].

See Also:: GLProfile.isGL3ES3()

isGL4ES3

public final boolean isGL4ES3()

Returns true if this profile is capable of GL4ES3, i.e. if isGLES3Compatible() returns true.

Includes [ GL ≥ 4.3, GL ≥ 3.1 w/ GL_ARB_ES3_compatibility and GLES3 ]

See Also:: GLProfile.isGL4ES3()

setSwapInterval

public final boolean setSwapInterval(int interval)
                              throws GLException

Set the swap interval of the current context and attached drawable.

Parameters:: interval - Should be ≥ 0. 0 disables the vertical synchronization, where ≥ 1 is the number of vertical refreshes before a swap buffer occurs. A value < 0 is ignored.
Returns:: true if the operation was successful, otherwise false
Throws:: GLException - if the context is not current.

getSwapInterval

public final int getSwapInterval()

Return the current swap interval.

If the context has not been made current at all, the default value -1 is returned.

For a valid context the default value is 1 in case of an EGL based profile (ES1 or ES2) and -1 (undefined) for desktop.

queryMaxSwapGroups

public final boolean queryMaxSwapGroups(int[] maxGroups,
                                        int maxGroups_offset,
                                        int[] maxBarriers,
                                        int maxBarriers_offset)

joinSwapGroup

public final boolean joinSwapGroup(int group)

getSwapGroup

public int getSwapGroup()

bindSwapBarrier

public final boolean bindSwapBarrier(int group,
                                     int barrier)

getBoundFramebuffer

public abstract int getBoundFramebuffer(int target)

Return the framebuffer name bound to this context, see GL.glBindFramebuffer(int, int).

getDefaultDrawFramebuffer

public abstract int getDefaultDrawFramebuffer()

Return the default draw framebuffer name.

May differ from it's default zero in case an framebuffer object (FBObject) based drawable is being used.

getDefaultReadFramebuffer

public abstract int getDefaultReadFramebuffer()

Return the default read framebuffer name.

May differ from it's default zero in case an framebuffer object (FBObject) based drawable is being used.

getDefaultReadBuffer

public abstract int getDefaultReadBuffer()

Returns the default color buffer within the current bound getDefaultReadFramebuffer(), i.e. GL_READ_FRAMEBUFFER, which will be used as the source for pixel reading commands, like glReadPixels etc.

For offscreen framebuffer objects this is GL.GL_COLOR_ATTACHMENT0, otherwise this is GL.GL_FRONT for single buffer configurations and GL.GL_BACK for double buffer configurations.

Note-1: Neither ES1 nor ES2 supports selecting the read buffer via glReadBuffer and GL.GL_BACK is the default.

Note-2: ES3 only supports GL.GL_BACK, GL.GL_NONE or GL.GL_COLOR_ATTACHMENT0+i

Note-3: See swapBuffersBeforeRead for read-pixels and swap-buffers implications.

getDefaultPixelDataType

public abstract int getDefaultPixelDataType()

Get the default pixel data type, as required by e.g. GL.glReadPixels(int, int, int, int, int, int, java.nio.Buffer).

getDefaultPixelDataFormat

public abstract int getDefaultPixelDataFormat()

Get the default pixel data format, as required by e.g. GL.glReadPixels(int, int, int, int, int, int, java.nio.Buffer).

getGLDebugMessageExtension

public abstract String getGLDebugMessageExtension()

Returns:: The extension implementing the GLDebugOutput feature, either GLExtensions.ARB_debug_output or GLExtensions.AMD_debug_output. If unavailable or called before initialized via makeCurrent(), null is returned.

isGLDebugSynchronous

public abstract boolean isGLDebugSynchronous()

Returns:: the current synchronous debug behavior, set via setGLDebugSynchronous(boolean).

setGLDebugSynchronous

public abstract void setGLDebugSynchronous(boolean synchronous)

Enables or disables the synchronous debug behavior via glEnable/glDisable(GL_DEBUG_OUTPUT_SYNCHRONOUS), if extension is GLExtensions.ARB_debug_output. There is no equivalent for GLExtensions.AMD_debug_output.

The default is true, ie GL2ES2.GL_DEBUG_OUTPUT_SYNCHRONOUS.

isGLDebugMessageEnabled

public abstract boolean isGLDebugMessageEnabled()

Returns:: true if the GLDebugOutput feature is enabled or not.

enableGLDebugMessage

public abstract void enableGLDebugMessage(boolean enable)
                                   throws GLException

Enables or disables the GLDebugOutput feature of extension GLExtensions.ARB_debug_output or GLExtensions.AMD_debug_output, if available.

To enable the GLDebugOutput feature enableGLDebugMessage(true) or setContextCreationFlags(CTX_OPTION_DEBUG) shall be called before context creation via makeCurrent()!

In case GLAutoDrawable are being used, glAutoDrawable.setContextCreationFlags(CTX_OPTION_DEBUG) shall be issued before context creation via makeCurrent()!

After context creation, the GLDebugOutput feature may be enabled or disabled at any time using this method.

Parameters:: enable - If true enables, otherwise disables the GLDebugOutput feature.
Throws:: GLException - if this context is not current or GLDebugOutput registration failed (enable)
See Also:: setContextCreationFlags(int), addGLDebugListener(GLDebugListener), GLAutoDrawable.setContextCreationFlags(int)

addGLDebugListener

public abstract void addGLDebugListener(GLDebugListener listener)

Add GLDebugListener.

Parameters:: listener - GLDebugListener handling GLDebugMessages
See Also:: enableGLDebugMessage(boolean), removeGLDebugListener(GLDebugListener)

removeGLDebugListener

public abstract void removeGLDebugListener(GLDebugListener listener)

Remove GLDebugListener.

Parameters:: listener - GLDebugListener handling GLDebugMessages
See Also:: enableGLDebugMessage(boolean), addGLDebugListener(GLDebugListener)

glDebugMessageControl

public abstract void glDebugMessageControl(int source,
                                           int type,
                                           int severity,
                                           int count,
                                           IntBuffer ids,
                                           boolean enabled)

Generic entry for GL2ES2.glDebugMessageControl(int, int, int, int, IntBuffer, boolean) and GL2GL3.glDebugMessageEnableAMD(int, int, int, IntBuffer, boolean) of the GLDebugOutput feature.

See Also:: enableGLDebugMessage(boolean)

glDebugMessageControl

public abstract void glDebugMessageControl(int source,
                                           int type,
                                           int severity,
                                           int count,
                                           int[] ids,
                                           int ids_offset,
                                           boolean enabled)

Generic entry for GL2ES2.glDebugMessageControl(int, int, int, int, int[], int, boolean) and GL2GL3.glDebugMessageEnableAMD(int, int, int, int[], int, boolean) of the GLDebugOutput feature.

See Also:: enableGLDebugMessage(boolean)

glDebugMessageInsert

public abstract void glDebugMessageInsert(int source,
                                          int type,
                                          int id,
                                          int severity,
                                          String buf)

Generic entry for GL2ES2.glDebugMessageInsert(int, int, int, int, int, String) and GL2GL3.glDebugMessageInsertAMD(int, int, int, int, String) of the GLDebugOutput feature.

See Also:: enableGLDebugMessage(boolean)

getMaxMajor

public static final int getMaxMajor(int ctxProfile)

getMaxMinor

public static final int getMaxMinor(int ctxProfile,
                                    int major)

isValidGLVersion

public static final boolean isValidGLVersion(int ctxProfile,
                                             int major,
                                             int minor)

Returns true, if the major.minor is not inferior to the lowest valid version and does not exceed the highest known major number by more than one.

The minor version number is ignored by the upper limit validation and the major version number may exceed by one.

The upper limit check is relaxed since we don't want to cut-off unforseen new GL version since the release of JOGL.

Hence it is important to iterate through GL version from the upper limit and decrementGLVersion(int, int[], int[]) until invalid.

clipGLVersion

public static final boolean clipGLVersion(int ctxProfile,
                                          int[] major,
                                          int[] minor)

Clip the given GL version to the maximum known valid version if exceeding.

Returns:: true if clipped, i.e. given value exceeds maximum, otherwise false.

decrementGLVersion

public static final boolean decrementGLVersion(int ctxProfile,
                                               int[] major,
                                               int[] minor)

Decrement the given GL version by one and return true if still valid, otherwise false.

If the given version exceeds the maximum known valid version, it is clipped and true is returned.

Parameters:: ctxProfile -; major -; minor -
Returns:

isFBOAvailable

public static final boolean isFBOAvailable(AbstractGraphicsDevice device,
                                           GLProfile glp)

Returns true if it is possible to create an framebuffer object (FBO).

FBO feature is implemented in OpenGL, hence it is GLProfile dependent.

FBO support is queried as described in hasBasicFBOSupport().

Parameters:: device - the device to request whether FBO is available for; glp - GLProfile to check for FBO capabilities
See Also:: hasBasicFBOSupport()

isHardwareRasterizer

public static final int isHardwareRasterizer(AbstractGraphicsDevice device,
                                             GLProfile glp)

Returns:: 1 if using a hardware rasterizer, 0 if using a software rasterizer and -1 if not determined yet.
See Also:: isHardwareRasterizer(), GLProfile.isHardwareRasterizer()

isGLES1Available

public static boolean isGLES1Available(AbstractGraphicsDevice device,
                                       boolean[] isHardware)

isGLES2Available

public static boolean isGLES2Available(AbstractGraphicsDevice device,
                                       boolean[] isHardware)

isGLES3Available

public static boolean isGLES3Available(AbstractGraphicsDevice device,
                                       boolean[] isHardware)

isGLES3CompatibleAvailable

public static final boolean isGLES3CompatibleAvailable(AbstractGraphicsDevice device)

Returns true if a ES3 compatible profile is available, i.e. either a ≥ 4.3 context or a ≥ 3.1 context supporting GL_ARB_ES3_compatibility, otherwise false.

Includes [ GL ≥ 4.3, GL ≥ 3.1 w/ GL_ARB_ES3_compatibility and GLES3 ]

isGL4bcAvailable

public static boolean isGL4bcAvailable(AbstractGraphicsDevice device,
                                       boolean[] isHardware)

isGL4Available

public static boolean isGL4Available(AbstractGraphicsDevice device,
                                     boolean[] isHardware)

isGL3bcAvailable

public static boolean isGL3bcAvailable(AbstractGraphicsDevice device,
                                       boolean[] isHardware)

isGL3Available

public static boolean isGL3Available(AbstractGraphicsDevice device,
                                     boolean[] isHardware)

isGL2Available

public static boolean isGL2Available(AbstractGraphicsDevice device,
                                     boolean[] isHardware)

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javax.media.opengl Class GLContext

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isShared

getCreatedShares

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getRendererQuirks

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setGLDrawable

getGLDrawable

isGLReadDrawableAvailable

setGLReadDrawable

getGLReadDrawable

makeCurrent

release

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getCurrentGL

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validateCurrent

makeCurrentResultToString

destroy

getRootGL

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isFunctionAvailable

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getPlatformExtensionCount

getPlatformExtensionsString

getGLExtensionCount

getGLExtensionsString

getContextCreationFlags

setContextCreationFlags

getGLVersion

getGLVersionNumber

getGLVendorVersionNumber

isGLCompatibilityProfile

isGLCoreProfile

isGLESProfile

isGLForwardCompatible

isGLDebugEnabled

isCreatedWithARBMethod

getGLSLVersionNumber

getGLSLVersionString

isGLES2Compatible

isGLES3Compatible

isHardwareRasterizer

hasGLSL

hasBasicFBOSupport

hasFullFBOSupport

hasFP32CompatAPI

getMaxRenderbufferSamples

isNPOTTextureAvailable

javax.media.opengl
Class GLContext