javax.media.opengl
Interface GLBase

All Known Subinterfaces:

GL, GL2, GL2ES1, GL2ES2, GL2ES3, GL2GL3, GL3, GL3bc, GL3ES3, GL4, GL4bc, GL4ES3, GLES1, GLES2, GLES3

All Known Implementing Classes:

DebugGL2, DebugGL3, DebugGL3bc, DebugGL4, DebugGL4bc, DebugGLES1, DebugGLES2, DebugGLES3, TraceGL2, TraceGL3, TraceGL3bc, TraceGL4, TraceGL4bc, TraceGLES1, TraceGLES2, TraceGLES3

public interface GLBase

The base interface from which all GL profiles derive, providing checked conversion down to concrete profiles, access to the OpenGL context associated with the GL and extension/function availability queries as described below.

While the APIs for vendor extensions are unconditionally exposed, the underlying functions may not be present. The method isFunctionAvailable(java.lang.String) should be used to query the availability of any non-core function before it is used for the first time; for example, gl.isFunctionAvailable("glProgramStringARB"). On certain platforms (Windows in particular), the most "core" functionality is only OpenGL 1.1, so in theory any routines first exposed in OpenGL 1.2, 1.3, and 1.4, 1.5, or 2.0 as well as vendor extensions should all be queried. Calling an unavailable function will cause a GLException to be raised.

isExtensionAvailable(java.lang.String) may also be used to determine whether a specific extension is available before calling the routines or using the functionality it exposes: for example, gl.isExtensionAvailable("GL_ARB_vertex_program");. However, in this case it is up to the end user to know which routines or functionality are associated with which OpenGL extensions. It may also be used to test for the availability of a particular version of OpenGL: for example, gl.isExtensionAvailable("GL_VERSION_1_5");.

Exceptions to the window system extension naming rules:

• The memory allocators for the NVidia vertex_array_range (VAR) extension, in particular wglAllocateMemoryNV / glXAllocateMemoryNV and associated routines. #glAllocateMemoryNV has been provided for window system-independent access to VAR. isFunctionAvailable(java.lang.String) will translate an argument of "glAllocateMemoryNV" or "glFreeMemoryNV" into the appropriate window system-specific name.

• WGL_ARB_pbuffer, WGL_ARB_pixel_format, and other platform-specific pbuffer functionality; the availability of pbuffers can be queried on Windows, X11 and Mac OS X platforms by querying isExtensionAvailable(java.lang.String) with an argument of "GL_ARB_pbuffer" or "GL_ARB_pixel_format".

Method Summary

int	getBoundBuffer(int target)
int	getBoundFramebuffer(int target) Return the framebuffer name bound to this context, see GL.glBindFramebuffer(int, int).
GLBufferStorage	getBufferStorage(int bufferName)
GLContext	getContext() Returns the GLContext associated which this GL object.
int	getDefaultDrawFramebuffer() Return the default draw framebuffer name.
int	getDefaultReadBuffer() Returns the default color buffer within the current bound getDefaultReadFramebuffer(), i.e.
int	getDefaultReadFramebuffer() Return the default read framebuffer name.
GL	getDownstreamGL() Returns the downstream GL instance in case this is a wrapping pipeline, otherwise null.
Object	getExtension(String extensionName) Returns an object providing access to the specified OpenGL extension.
GL	getGL() Casts this object to the GL interface.
GL2	getGL2() Casts this object to the GL2 interface.
GL2ES1	getGL2ES1() Casts this object to the GL2ES1 interface.
GL2ES2	getGL2ES2() Casts this object to the GL2ES2 interface.
GL2ES3	getGL2ES3() Casts this object to the GL2ES3 interface.
GL2GL3	getGL2GL3() Casts this object to the GL2GL3 interface.
GL3	getGL3() Casts this object to the GL3 interface.
GL3bc	getGL3bc() Casts this object to the GL3bc interface.
GL3ES3	getGL3ES3() Casts this object to the GL3ES3 interface.
GL4	getGL4() Casts this object to the GL4 interface.
GL4bc	getGL4bc() Casts this object to the GL4bc interface.
GL4ES3	getGL4ES3() Casts this object to the GL4ES3 interface.
GLES1	getGLES1() Casts this object to the GLES1 interface.
GLES2	getGLES2() Casts this object to the GLES2 interface.
GLES3	getGLES3() Casts this object to the GLES3 interface.
GLProfile	getGLProfile() Returns the GLProfile associated with this GL object.
int	getMaxRenderbufferSamples() Returns the maximum number of FBO RENDERBUFFER samples if full FBO is supported, otherwise false.
Object	getPlatformGLExtensions() Returns an object through which platform-specific OpenGL extensions (EGL, GLX, WGL, etc.) may be accessed.
GL	getRootGL() Returns the implementing root instance, considering a wrapped pipelined hierarchy, see getDownstreamGL().
int	getSwapInterval() Provides a platform-independent way to get the swap interval set by setSwapInterval(int).
void	glClearDepth(double depth) Aliased entrypoint of void glClearDepth(GLclampd depth); and void glClearDepthf(GLclampf depth); .
void	glDepthRange(double zNear, double zFar) Aliased entrypoint of void glDepthRange(GLclampd depth); and void glDepthRangef(GLclampf depth); .
int	glGetBoundBuffer(int target) Deprecated. Avoid original GL API namespace conflict. Use getBoundBuffer(int)
long	glGetBufferSize(int bufferName) Deprecated. Use getBufferStorage(int).
boolean	glIsVBOArrayBound() Deprecated. Avoid original GL API namespace conflict. Use isVBOArrayBound()
boolean	glIsVBOElementArrayBound() Deprecated. Avoid original GL API namespace conflict. Use isVBOElementArrayBound()
boolean	hasBasicFBOSupport() Returns true if basic FBO support is available, otherwise false.
boolean	hasFullFBOSupport() Returns true if full FBO support is available, otherwise false.
boolean	hasGLSL() Indicates whether this GL object supports GLSL.
boolean	isExtensionAvailable(String glExtensionName) Returns true if the specified OpenGL extension can be used successfully through this GL instance given the current host (OpenGL client) and display (OpenGL server) configuration.
boolean	isFunctionAvailable(String glFunctionName) Returns true if the specified OpenGL core- or extension-function can be used successfully through this GL instance given the current host (OpenGL client) and display (OpenGL server) configuration.
boolean	isGL() Indicates whether this GL object conforms to any of the OpenGL profiles.
boolean	isGL2() Indicates whether this GL object conforms to the OpenGL ≤ 3.0 profile.
boolean	isGL2ES1() Indicates whether this GL object conforms to a GL2ES1 compatible profile.
boolean	isGL2ES2() Indicates whether this GL object conforms to a GL2ES2 compatible profile.
boolean	isGL2ES3() Indicates whether this GL object conforms to a either a GL2GL3 or GL3ES3 compatible profile.
boolean	isGL2GL3() Indicates whether this GL object conforms to a GL2GL3 compatible profile.
boolean	isGL3() Indicates whether this GL object conforms to the OpenGL ≥ 3.1 core profile.
boolean	isGL3bc() Indicates whether this GL object conforms to the OpenGL ≥ 3.1 compatibility profile.
boolean	isGL3core() Indicates whether this GL object uses a GL3 core profile.
boolean	isGL3ES3() Indicates whether this GL object conforms to a GL3ES3 compatible profile.
boolean	isGL4() Indicates whether this GL object conforms to the OpenGL ≥ 4.0 core profile.
boolean	isGL4bc() Indicates whether this GL object conforms to the OpenGL ≥ 4.0 compatibility profile.
boolean	isGL4core() Indicates whether this GL object uses a GL4 core profile.
boolean	isGL4ES3() Returns true if this GL object conforms to a GL4ES3 compatible profile, i.e.
boolean	isGLcore() Indicates whether this GL object uses a GL core profile.
boolean	isGLES() Indicates whether this GL object conforms to one of the OpenGL ES profiles, see isGLES1(), isGLES2() and isGLES3().
boolean	isGLES1() Indicates whether this GL object conforms to the OpenGL ES1 ≥ 1.0 profile.
boolean	isGLES2() Indicates whether this GL object conforms to the OpenGL ES2 ≥ 2.0 profile.
boolean	isGLES2Compatible() Indicates whether this GL object is compatible with the core OpenGL ES2 functionality.
boolean	isGLES3() Indicates whether this GL object conforms to the OpenGL ES2 ≥ 3.0 profile.
boolean	isGLES3Compatible() Indicates whether this GL object is compatible with the core OpenGL ES3 functionality.
boolean	isNPOTTextureAvailable() Returns true if the GL context supports non power of two (NPOT) textures, otherwise false.
boolean	isTextureFormatBGRA8888Available()
boolean	isVBOArrayBound()
boolean	isVBOElementArrayBound()
GLBufferStorage	mapBuffer(int target, int access) Returns the GLBufferStorage instance as mapped via OpenGL's native glMapBuffer(..) implementation.
GLBufferStorage	mapBufferRange(int target, long offset, long length, int access) Returns the GLBufferStorage instance as mapped via OpenGL's native glMapBufferRange(..) implementation.
void	setSwapInterval(int interval) Provides a platform-independent way to specify the minimum swap interval for buffer swaps.

Method Detail

isGL

boolean isGL()

Indicates whether this GL object conforms to any of the OpenGL profiles.

isGL4bc

boolean isGL4bc()

Indicates whether this GL object conforms to the OpenGL ≥ 4.0 compatibility profile. The GL4 compatibility profile includes the GL2, GL2ES1, GL2ES2, GL3, GL3bc and GL4 profile.

See Also:

GLContext.isGL4bc()

isGL4

boolean isGL4()

Indicates whether this GL object conforms to the OpenGL ≥ 4.0 core profile. The GL4 core profile includes the GL2ES2, and GL3 profile.

See Also:

GLContext.isGL4()

isGL3bc

boolean isGL3bc()

Indicates whether this GL object conforms to the OpenGL ≥ 3.1 compatibility profile. The GL3 compatibility profile includes the GL2, GL2ES1, GL2ES2 and GL3 profile.

See Also:

GLContext.isGL3bc()

isGL3

boolean isGL3()

Indicates whether this GL object conforms to the OpenGL ≥ 3.1 core profile. The GL3 core profile includes the GL2ES2 profile.

See Also:

GLContext.isGL3()

isGL2

boolean isGL2()

Indicates whether this GL object conforms to the OpenGL ≤ 3.0 profile. The GL2 profile includes the GL2ES1 and GL2ES2 profile.

See Also:

GLContext.isGL2()

isGLES1

boolean isGLES1()

Indicates whether this GL object conforms to the OpenGL ES1 ≥ 1.0 profile.

See Also:

GLContext.isGLES1()

isGLES2

boolean isGLES2()

Indicates whether this GL object conforms to the OpenGL ES2 ≥ 2.0 profile.

Remark: ES2 compatible desktop profiles are not included. To query whether core ES2 functionality is provided, use isGLES2Compatible().

See Also:

isGLES2Compatible(), GLContext.isGLES2()

isGLES3

boolean isGLES3()

Indicates whether this GL object conforms to the OpenGL ES2 ≥ 3.0 profile.

Remark: ES3 compatible desktop profiles are not included. To query whether core ES3 functionality is provided, use isGLES3Compatible().

See Also:

isGLES3Compatible(), GLContext.isGLES3()

isGLES

boolean isGLES()

Indicates whether this GL object conforms to one of the OpenGL ES profiles, see isGLES1(), isGLES2() and isGLES3().

See Also:

GLContext.isGLES()

isGL2ES1

boolean isGL2ES1()

Indicates whether this GL object conforms to a GL2ES1 compatible profile.

See Also:

GLContext.isGL2ES1()

isGL2ES2

boolean isGL2ES2()

Indicates whether this GL object conforms to a GL2ES2 compatible profile.

See Also:

GLContext.isGL2ES2()

isGL2ES3

boolean isGL2ES3()

Indicates whether this GL object conforms to a either a GL2GL3 or GL3ES3 compatible profile.

See Also:

GLContext.isGL2ES3()

isGL3ES3

boolean isGL3ES3()

Indicates whether this GL object conforms to a GL3ES3 compatible profile.

See Also:

GLContext.isGL3ES3()

isGL4ES3

boolean isGL4ES3()

Returns true if this GL object conforms to a GL4ES3 compatible profile, i.e. if isGLES3Compatible() returns true.

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

See Also:

GLContext.isGL4ES3()

isGL2GL3

boolean isGL2GL3()

Indicates whether this GL object conforms to a GL2GL3 compatible profile.

See Also:

GLContext.isGL2GL3()

isGL4core

boolean isGL4core()

Indicates whether this GL object uses a GL4 core profile.

Includes [ GL4 ].

See Also:

GLContext.isGL4core()

isGL3core

boolean isGL3core()

Indicates whether this GL object uses a GL3 core profile.

Includes [ GL4, GL3 ].

See Also:

GLContext.isGL3core()

isGLcore

boolean isGLcore()

Indicates whether this GL object uses a GL core profile.

Includes [ GL4, GL3, GLES3, GL2ES2 ].

See Also:

GLContext.isGLcore()

isGLES2Compatible

boolean isGLES2Compatible()

Indicates whether this GL object is compatible with the core OpenGL ES2 functionality.

Returns:

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

See Also:

GLContext.isGLES2Compatible()

isGLES3Compatible

boolean isGLES3Compatible()

Indicates whether this GL object is compatible with the core OpenGL ES3 functionality.

Return true if the underlying 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 ]

See Also:

GLContext.isGLES3Compatible()

hasGLSL

boolean hasGLSL()

Indicates whether this GL object supports GLSL.

See Also:

GLContext.hasGLSL()

getDownstreamGL

GL getDownstreamGL()
                   throws GLException

Returns the downstream GL instance in case this is a wrapping pipeline, otherwise null.

See getRootGL() for retrieving the implementing root instance.

Throws:

GLException - if the downstream instance is not null and not a GL implementation

See Also:

getRootGL()

getRootGL

GL getRootGL()
             throws GLException

Returns the implementing root instance, considering a wrapped pipelined hierarchy, see getDownstreamGL().

If this instance is not a wrapping pipeline, i.e. has no downstream instance, this instance is returned.

Throws:

GLException - if the root instance is not a GL implementation

getGL

GL getGL()
         throws GLException

Casts this object to the GL interface.

Throws:

GLException - if this object is not a GL implementation

getGL4bc

GL4bc getGL4bc()
               throws GLException

Casts this object to the GL4bc interface.

Throws:

GLException - if this object is not a GL4bc implementation

getGL4

GL4 getGL4()
           throws GLException

Casts this object to the GL4 interface.

Throws:

GLException - if this object is not a GL4 implementation

getGL3bc

GL3bc getGL3bc()
               throws GLException

Casts this object to the GL3bc interface.

Throws:

GLException - if this object is not a GL3bc implementation

getGL3

GL3 getGL3()
           throws GLException

Casts this object to the GL3 interface.

Throws:

GLException - if this object is not a GL3 implementation

getGL2

GL2 getGL2()
           throws GLException

Casts this object to the GL2 interface.

Throws:

GLException - if this object is not a GL2 implementation

getGLES1

GLES1 getGLES1()
               throws GLException

Casts this object to the GLES1 interface.

Throws:

GLException - if this object is not a GLES1 implementation

getGLES2

GLES2 getGLES2()
               throws GLException

Casts this object to the GLES2 interface.

Throws:

GLException - if this object is not a GLES2 implementation

getGLES3

GLES3 getGLES3()
               throws GLException

Casts this object to the GLES3 interface.

Throws:

GLException - if this object is not a GLES3 implementation

getGL2ES1

GL2ES1 getGL2ES1()
                 throws GLException

Casts this object to the GL2ES1 interface.

Throws:

GLException - if this object is not a GL2ES1 implementation

getGL2ES2

GL2ES2 getGL2ES2()
                 throws GLException

Casts this object to the GL2ES2 interface.

Throws:

GLException - if this object is not a GL2ES2 implementation

getGL2ES3

GL2ES3 getGL2ES3()
                 throws GLException

Casts this object to the GL2ES3 interface.

Throws:

GLException - if this object is not a GL2ES3 implementation

getGL3ES3

GL3ES3 getGL3ES3()
                 throws GLException

Casts this object to the GL3ES3 interface.

Throws:

GLException - if this object is not a GL3ES3 implementation

getGL4ES3

GL4ES3 getGL4ES3()
                 throws GLException

Casts this object to the GL4ES3 interface.

Throws:

GLException - if this object is not a GL4ES3 implementation

getGL2GL3

GL2GL3 getGL2GL3()
                 throws GLException

Casts this object to the GL2GL3 interface.

Throws:

GLException - if this object is not a GL2GL3 implementation

getGLProfile

GLProfile getGLProfile()

Returns the GLProfile associated with this GL object.

getContext

GLContext getContext()

Returns the GLContext associated which this GL object.

isFunctionAvailable

boolean isFunctionAvailable(String glFunctionName)

Returns true if the specified OpenGL core- or extension-function can be used successfully through this GL instance given the current host (OpenGL client) and display (OpenGL server) configuration.

By "successfully" we mean that the function is both callable on the machine running the program and available on the current display.

In order to call a function successfully, the function must be both callable on the machine running the program and available on the display device that is rendering the output (note: on non-networked, single-display machines these two conditions are identical; on networked and/or multi-display machines this becomes more complicated). These conditions are met if the function is either part of the core OpenGL version supported by both the host and display, or it is an OpenGL extension function that both the host and display support.

A GL function is callable if it is successfully linked at runtime, hence the GLContext must be made current at least once.

Parameters:

glFunctionName - the name of the OpenGL function (e.g., use "glBindRenderbufferEXT" or "glBindRenderbuffer" to check if GL.glBindRenderbuffer(int,int) is available).

isExtensionAvailable

boolean isExtensionAvailable(String glExtensionName)

Returns true if the specified OpenGL extension can be used successfully through this GL instance given the current host (OpenGL client) and display (OpenGL server) configuration.

Parameters:

glExtensionName - the name of the OpenGL extension (e.g., "GL_ARB_vertex_program").

hasBasicFBOSupport

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:

GLContext.hasBasicFBOSupport()

hasFullFBOSupport

boolean hasFullFBOSupport()

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

Full FBO is supported if the context is either GL >= core 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.

See Also:

GLContext.hasFullFBOSupport()

getMaxRenderbufferSamples

int getMaxRenderbufferSamples()

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

See Also:

GLContext.getMaxRenderbufferSamples()

isNPOTTextureAvailable

boolean isNPOTTextureAvailable()

Returns true if the GL context supports non power of two (NPOT) textures, otherwise false.

NPOT textures are supported in OpenGL >= 3, GLES2 or if the 'GL_ARB_texture_non_power_of_two' extension is available.

isTextureFormatBGRA8888Available

boolean isTextureFormatBGRA8888Available()

setSwapInterval

void setSwapInterval(int interval)

Provides a platform-independent way to specify the minimum swap interval for buffer swaps. An argument of 0 disables sync-to-vertical-refresh completely, while an argument of 1 causes the application to wait until the next vertical refresh until swapping buffers. The default, which is platform-specific, is usually either 0 or 1. This function is not guaranteed to have an effect, and in particular only affects heavyweight onscreen components.

Throws:

GLException - if this context is not the current

See Also:

getSwapInterval()

getSwapInterval

int getSwapInterval()

Provides a platform-independent way to get the swap interval set by setSwapInterval(int).
If the interval is not set by setSwapInterval(int) yet, -1 is returned, indicating that the platforms default is being used.

See Also:

setSwapInterval(int)

getPlatformGLExtensions

Object getPlatformGLExtensions()

Returns an object through which platform-specific OpenGL extensions (EGL, GLX, WGL, etc.) may be accessed. The data type of the returned object and its associated capabilities are undefined. Most applications will never need to call this method. It is highly recommended that any applications which do call this method perform all accesses on the returned object reflectively to guard themselves against changes to the implementation.

getExtension

Object getExtension(String extensionName)

Returns an object providing access to the specified OpenGL extension. This is intended to provide a mechanism for vendors who wish to provide access to new OpenGL extensions without changing the public API of the core package. For example, a user may request access to extension "GL_VENDOR_foo" and receive back an object which implements a vendor-specified interface which can call the OpenGL extension functions corresponding to that extension. It is up to the vendor to specify both the extension name and Java API for accessing it, including which class or interface contains the functions.

Note: it is the intent to add new extensions as quickly as possible to the core GL API. Therefore it is unlikely that most vendors will use this extension mechanism, but it is being provided for completeness.

glClearDepth

void glClearDepth(double depth)

Aliased entrypoint of void glClearDepth(GLclampd depth); and void glClearDepthf(GLclampf depth); .

glDepthRange

void glDepthRange(double zNear,
                  double zFar)

Aliased entrypoint of void glDepthRange(GLclampd depth); and void glDepthRangef(GLclampf depth); .

glGetBoundBuffer

int glGetBoundBuffer(int target)

Deprecated. Avoid original GL API namespace conflict. Use getBoundBuffer(int)

getBoundBuffer

int getBoundBuffer(int target)

Parameters:

target - a GL buffer (VBO) target as used in GL.glBindBuffer(int, int), ie GL.GL_ELEMENT_ARRAY_BUFFER, GL.GL_ARRAY_BUFFER, ..

Returns:

the GL buffer name bound to a target via GL.glBindBuffer(int, int) or 0 if unbound.

See Also:

getBufferStorage(int)

glGetBufferSize

long glGetBufferSize(int bufferName)

Deprecated. Use getBufferStorage(int).

getBufferStorage

GLBufferStorage getBufferStorage(int bufferName)

Parameters:

bufferName - a GL buffer name, generated with e.g. GL.glGenBuffers(int, int[], int) and used in GL.glBindBuffer(int, int), GL.glBufferData(int, long, java.nio.Buffer, int) or GL2.glNamedBufferDataEXT(int, long, java.nio.Buffer, int).

Returns:

the size of the given GL buffer storage, see GLBufferStorage

See Also:

getBoundBuffer(int)

mapBuffer

GLBufferStorage mapBuffer(int target,
                          int access)
                          throws GLException

Returns the GLBufferStorage instance as mapped via OpenGL's native glMapBuffer(..) implementation.

Throws a GLException if GL-function constraints are not met.

GL.glMapBuffer(int, int) wrapper calls this method and returns GLBufferStorage.getMappedBuffer().

A zero GLBufferStorage.getSize() will avoid a native call and returns the unmapped GLBufferStorage.

A null native mapping result indicating an error will not cause a GLException but returns the unmapped GLBufferStorage. This allows the user to handle this case.

Parameters:

target - denotes the buffer via it's bound target

access - the mapping access mode

Throws:

GLException - if buffer is not bound to target

GLException - if buffer is not tracked

GLException - if buffer is already mapped

GLException - if buffer has invalid store size, i.e. less-than zero

mapBufferRange

GLBufferStorage mapBufferRange(int target,
                               long offset,
                               long length,
                               int access)
                               throws GLException

Returns the GLBufferStorage instance as mapped via OpenGL's native glMapBufferRange(..) implementation.

Throws a GLException if GL-function constraints are not met.

GL.glMapBufferRange(int, long, long, int) wrapper calls this method and returns GLBufferStorage.getMappedBuffer().

A zero GLBufferStorage.getSize() will avoid a native call and returns the unmapped GLBufferStorage.

A null native mapping result indicating an error will not cause a GLException but returns the unmapped GLBufferStorage. This allows the user to handle this case.

Parameters:

target - denotes the buffer via it's bound target

offset - offset of the mapped buffer's storage

length - length of the mapped buffer's storage

access - the mapping access mode

Throws:

GLException - if buffer is not bound to target

GLException - if buffer is not tracked

GLException - if buffer is already mapped

GLException - if buffer has invalid store size, i.e. less-than zero

GLException - if buffer mapping range does not fit, incl. offset

glIsVBOArrayBound

boolean glIsVBOArrayBound()

Deprecated. Avoid original GL API namespace conflict. Use isVBOArrayBound()

isVBOArrayBound

boolean isVBOArrayBound()

Returns:

true if a VBO is bound to GL.GL_ARRAY_BUFFER via GL.glBindBuffer(int, int), otherwise false

glIsVBOElementArrayBound

boolean glIsVBOElementArrayBound()

Deprecated. Avoid original GL API namespace conflict. Use isVBOElementArrayBound()

isVBOElementArrayBound

boolean isVBOElementArrayBound()

Returns:

true if a VBO is bound to GL.GL_ELEMENT_ARRAY_BUFFER via GL.glBindBuffer(int, int), otherwise false

getBoundFramebuffer

int getBoundFramebuffer(int target)

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

getDefaultDrawFramebuffer

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

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

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.