# This .cfg file provides common options used among all glue code # generated for Jogl on all platforms. Include gl-common-extensions.cfg # There are a few routines we don't handle yet Ignore glGetBufferPointerivNV Ignore glGetBufferPointerv # Raise GLException instead of RuntimeException in glue code RuntimeExceptionType GLException # Imports needed by all glue code Import java.nio.* Import java.util.* Import javax.media.opengl.* Import com.sun.opengl.impl.* ##################################################################### # Mostly desktop OpenGL stuff below # # Don't output #defines of GL version identifier strings as constants, # because we don't need them java-side. Ignore GL_VERSION_.+ # Don't output #defines of GL name strings as constants, because we # don't need them java-side. # Format of name strings is found at: # http://oss.sgi.com/projects/ogl-sample/registry/doc/template.txt Ignore (GL|GLU|GLX|WGL|AGL|CGL)_EXT_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_ARB_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_PGI_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_SGI_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_SGIS_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_SGIX_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_MESA_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_HP_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_ATI_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_NV_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_IBM_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_WIN_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_REND_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_APPLE_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_INTEL_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_INGR_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_SUN_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_SUNX_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_3DFX_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_OML_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_I3D_.+ Ignore (GL|GLU|GLX|WGL|AGL|CGL)_S3_.+ Ignore GL_KTX_buffer_region # Ignore GL functions that deal with explicit pointer values in such a # way that we cannot implement the functionality in Java Ignore glGetBufferPointerv Ignore glGetPointerv Ignore glGetPointervEXT Ignore glGetTexParameterPointervAPPLE Ignore glGetVertexAttribPointerv Ignore glGetVertexAttribPointervNV Ignore glTracePointerRangeMESA # Manually implement glMapBuffer as the size of the returned buffer # can only be computed by calling another routine ManuallyImplement glMapBuffer ManuallyImplement glMapBufferOES # Ignore the ATI_map_object_buffer extension for now unless someone # claims they need it, as it will undoubtedly require a similar # construct to glMapBuffer Ignore glMapObjectBufferATI Ignore glUnmapObjectBufferATI # Ignore some GL functions that have outgoing void** parameters; we cannot yet deal with them Ignore glGetVariantPointervEXT # FIXME: these extensions require either a handle to a device context # or take void** parameters or both. Until we think through the # semantics of each of these individually we need to disable them. # WGL_ARB_buffer_region Ignore wglCreateBufferRegion Ignore wglDeleteBufferRegion Ignore wglSaveBufferRegion Ignore wglRestoreBufferRegion Ignore wglGetSyncValuesOML Ignore wglGetMscRateOML Ignore wglSwapBuffersMscOML Ignore wglSwapLayerBuffersMscOML Ignore wglWaitForMscOML Ignore wglWaitForSbcOML Ignore wglGetDigitalVideoParametersI3D Ignore wglSetDigitalVideoParametersI3D Ignore wglGetGammaTableParametersI3D Ignore wglSetGammaTableParametersI3D Ignore wglGetGammaTableI3D Ignore wglSetGammaTableI3D Ignore wglEnableGenlockI3D Ignore wglDisableGenlockI3D Ignore wglIsEnabledGenlockI3D Ignore wglGenlockSourceI3D Ignore wglGetGenlockSourceI3D Ignore wglGenlockSourceEdgeI3D Ignore wglGetGenlockSourceEdgeI3D Ignore wglGenlockSampleRateI3D Ignore wglGetGenlockSampleRateI3D Ignore wglGenlockSourceDelayI3D Ignore wglGetGenlockSourceDelayI3D Ignore wglQueryGenlockMaxSourceDelayI3D Ignore wglCreateImageBufferI3D Ignore wglDestroyImageBufferI3D Ignore wglAssociateImageBufferEventsI3D Ignore wglReleaseImageBufferEventsI3D # # IgnoreExtension directives # # Ignore extensions requiring persistent pointer-to-pointer storage as # there is no such thing as a direct "BufferBuffer" IgnoreExtension GL_IBM_vertex_array_lists IgnoreExtension GL_INTEL_parallel_arrays IgnoreExtension GL_SUN_triangle_list # Ignore extensions never approved by the ARB IgnoreExtension GL_EXT_coordinate_frame # Ignore discontinued extensions IgnoreExtension GL_NV_element_array # Ignore extensions subsumed in OpenGL 1.1 (from OpenGL 1.1 spec, Appendix C) IgnoreExtension GL_EXT_vertex_array IgnoreExtension GL_EXT_blend_logic_op IgnoreExtension GL_EXT_copy_texture IgnoreExtension GL_EXT_polygon_offset IgnoreExtension GL_EXT_subtexture IgnoreExtension GL_EXT_texture IgnoreExtension GL_EXT_texture_object # Ignore extensions subsumed in OpenGL 1.2 and 1.2.1 (from OpenGL 1.2.1 spec, Appendix D) IgnoreExtension GL_EXT_bgra IgnoreExtension GL_EXT_blend_color IgnoreExtension GL_EXT_blend_minmax IgnoreExtension GL_EXT_blend_subtract IgnoreExtension GL_EXT_color_subtable IgnoreExtension GL_EXT_convolution IgnoreExtension GL_EXT_draw_range_elements IgnoreExtension GL_EXT_histogram IgnoreExtension GL_EXT_packed_pixels # FIXME: is GL_EXT_paletted_texture also obsolete? IgnoreExtension GL_EXT_rescale_normal IgnoreExtension GL_EXT_separate_specular_color IgnoreExtension GL_EXT_texture3D IgnoreExtension GL_HP_convolution_border_modes IgnoreExtension GL_SGI_color_matrix IgnoreExtension GL_SGI_color_table IgnoreExtension GL_SGIS_texture_edge_clamp IgnoreExtension GL_SGIS_texture_lod # Ignore extensions subsumed in OpenGL 1.3 (from OpenGL 1.3 spec, Appendix F) IgnoreExtension GL_ARB_multisample IgnoreExtension GL_ARB_multitexture IgnoreExtension GL_ARB_texture_compression IgnoreExtension GL_ARB_texture_cube_map IgnoreExtension GL_ARB_texture_border_clamp IgnoreExtension GL_ARB_texture_env_add IgnoreExtension GL_ARB_texture_env_combine IgnoreExtension GL_ARB_texture_env_dot3 IgnoreExtension GL_ARB_transpose_matrix IgnoreExtension GL_EXT_texture_cube_map IgnoreExtension GL_EXT_texture_env_add IgnoreExtension GL_EXT_texture_env_combine IgnoreExtension GL_EXT_texture_env_dot3 IgnoreExtension GL_SGIS_texture_border_clamp # # Opaques and other directives for platform-independent routines # Opaque boolean GLboolean ReturnsString glGetString # # NIODirectOnly directives for vertex arrays and other core routines # NIODirectOnly glColorPointer NIODirectOnly glEdgeFlagPointer NIODirectOnly glFeedbackBuffer NIODirectOnly glIndexPointer NIODirectOnly glNormalPointer NIODirectOnly glSelectBuffer NIODirectOnly glTexCoordPointer NIODirectOnly glVertexPointer # # FIXME: we should probably be ignoring the "EXT" variants of these # NIODirectOnly glColorPointerEXT NIODirectOnly glEdgeFlagPointerEXT NIODirectOnly glIndexPointerEXT NIODirectOnly glNormalPointerEXT NIODirectOnly glTexCoordPointerEXT NIODirectOnly glVertexPointerEXT # # NIODirectOnly directives for other extensions # NIODirectOnly glBinormalPointerEXT NIODirectOnly glGetBufferSubDataARB # FIXME: should add way to restrict argument to be a direct ByteBuffer NIODirectOnly glGetProgramStringARB NIODirectOnly glElementPointerATI NIODirectOnly glElementPointerNV NIODirectOnly glElementPointerAPPLE NIODirectOnly glFogCoordPointer NIODirectOnly glFogCoordPointerEXT NIODirectOnly glMatrixIndexPointerARB NIODirectOnly glPixelDataRangeNV NIODirectOnly glSecondaryColorPointer NIODirectOnly glSecondaryColorPointerEXT NIODirectOnly glTangentPointerEXT NIODirectOnly glVertexArrayRangeNV NIODirectOnly glVertexArrayRangeApple NIODirectOnly glVertexAttribPointerARB NIODirectOnly glVertexAttribPointerNV NIODirectOnly glVertexWeightPointerEXT NIODirectOnly glWeightPointerARB NIODirectOnly wglFreeMemoryNV NIODirectOnly glXFreeMemoryNV # Capacity of wglAllocateMemoryNV/glXAllocateMemoryNV return value is # same as value of first argument ReturnValueCapacity wglAllocateMemoryNV {0} ReturnValueCapacity glXAllocateMemoryNV {0} # Pass arguments to ARB_vertex_program, ARB_fragment_program, # ARB_shader_objects, NV_vertex_program, NV_fragment_program, and # ARB_vertex_shader as Strings ArgumentIsString glLoadProgramNV 3 ArgumentIsString glProgramStringARB 3 ArgumentIsString glProgramNamedParameter4fNV 2 ArgumentIsString glProgramNamedParameter4dNV 2 ArgumentIsString glProgramNamedParameter4fvNV 2 ArgumentIsString glProgramNamedParameter4dvNV 2 ArgumentIsString glGetProgramNamedParameterfvNV 2 ArgumentIsString glGetProgramNamedParameterdvNV 2 ArgumentIsString glShaderSource 2 ArgumentIsString glShaderSourceARB 2 ArgumentIsString glGetUniformLocation 1 ArgumentIsString glGetUniformLocationARB 1 ArgumentIsString glBindAttribLocation 2 ArgumentIsString glBindAttribLocationARB 2 ArgumentIsString glGetAttribLocation 1 ArgumentIsString glGetAttribLocationARB 1 # # Directives for Vertex Buffer Object and Pixel Buffer Object checking # # NOTE: we currently don't emit glue code for some of these but # include them for completeness. # # FIXME: what about glMultiDrawElements? Do we want to add a VBO # variant for that, or simply add checks to the top of the current # implementation? # JavaPrologue glBegin inBeginEndPair = true; JavaEpilogue glEnd inBeginEndPair = false; JavaEpilogue glBindBuffer bufferStateTracker.setBoundBufferObject({0}, {1}); JavaEpilogue glBindBufferARB bufferStateTracker.setBoundBufferObject({0}, {1}); JavaEpilogue glPushClientAttrib bufferStateTracker.clearBufferObjectState(); JavaEpilogue glPopClientAttrib bufferStateTracker.clearBufferObjectState(); JavaEpilogue glBufferData bufferSizeTracker.setBufferSize(bufferStateTracker, {0}, this, {1}); BufferObjectKind Array glColorPointer BufferObjectKind Array glEdgeFlagPointer BufferObjectKind Array glElementPointerATI BufferObjectKind Array glFogCoordPointer BufferObjectKind Array glFogCoordPointerEXT # The next one is problematic. It isn't discussed by the specs and # doesn't have any associated state. BufferObjectKind Array glInterleavedArrays BufferObjectKind Array glMatrixIndexPointerARB BufferObjectKind Array glNormalPointer BufferObjectKind Array glSecondaryColorPointer BufferObjectKind Array glSecondaryColorPointerEXT BufferObjectKind Array glTexCoordPointer BufferObjectKind Array glVariantPointerEXT BufferObjectKind Array glVertexPointer BufferObjectKind Array glVertexAttribPointer BufferObjectKind Array glVertexAttribPointerARB BufferObjectKind Array glVertexAttribPointerNV BufferObjectKind Array glVertexWeightPointerEXT BufferObjectKind Array glWeightPointerARB BufferObjectKind Element glDrawElements BufferObjectKind Element glDrawRangeElements BufferObjectKind Element glDrawRangeElementsEXT # Range check directives for various routines # FIXME: some of these are really the bare minimum and won't catch # many classes of errors. Should extend the DebugGL to perform much # more error checking with e.g. glDrawElements. RangeCheck glColorPointer 3 1 RangeCheck glDrawElements 3 {1} RangeCheck glDrawRangeElements 5 {3} RangeCheck glEdgeFlagPointer 1 1 RangeCheck glElementPointerATI 1 1 RangeCheck glFogCoordPointer 2 1 RangeCheck glFogCoordPointerEXT 2 1 RangeCheck glInterleavedArrays 2 1 RangeCheck glMatrixIndexPointerARB 3 1 RangeCheck glNormalPointer 2 1 RangeCheck glSecondaryColorPointer 3 1 RangeCheck glSecondaryColorPointerEXT 3 1 RangeCheck glTexCoordPointer 3 1 RangeCheck glVariantPointerEXT 3 1 RangeCheck glVertexPointer 3 1 RangeCheck glVertexAttribPointer 5 1 RangeCheck glVertexAttribPointerARB 5 1 RangeCheck glWeightPointerARB 3 1 # Range check directives for various image-related routines RangeCheckBytes glColorTable 5 imageSizeInBytes({3}, {4}, {2} , 1 , 1) RangeCheckBytes glColorTableEXT 5 imageSizeInBytes({3}, {4}, {2} , 1 , 1) RangeCheckBytes glConvolutionFilter1D 5 imageSizeInBytes({3}, {4}, {2} , 1 , 1) RangeCheckBytes glConvolutionFilter2D 6 imageSizeInBytes({4}, {5}, {2} , {3} , 1) RangeCheckBytes glDrawPixels 4 imageSizeInBytes({2}, {3}, {0} , {1} , 1) RangeCheckBytes glReadPixels 6 imageSizeInBytes({4}, {5}, {2} , {3} , 1) RangeCheckBytes glTexImage1D 7 imageSizeInBytes({5}, {6}, {3} , 1 , 1) RangeCheckBytes glTexImage2D 8 imageSizeInBytes({6}, {7}, {3} , {4} , 1) RangeCheckBytes glTexImage3D 9 imageSizeInBytes({7}, {8}, {3} , {4} , {5}) RangeCheckBytes glTexSubImage1D 6 imageSizeInBytes({4}, {5}, {3} , 1 , 1) RangeCheckBytes glTexSubImage2D 8 imageSizeInBytes({6}, {7}, {4} , {5} , 1) RangeCheckBytes glTexSubImage3D 10 imageSizeInBytes({8}, {9}, {5} , {6} , {7}) # Note we don't support glTexImage4DSGIS / glTexSubImage4DSGIS # Not simple to produce good range checks for these as we would need # to query the pipeline to see the size of the returned data before # fetching it # RangeCheckBytes glGetTexImage # Range checks for server-side object creation and deletion methods RangeCheck glGenBuffers 1 {0} RangeCheck glDeleteBuffers 1 {0} RangeCheck glGenBuffersARB 1 {0} RangeCheck glDeleteBuffersARB 1 {0} RangeCheck glGenFencesAPPLE 1 {0} RangeCheck glDeleteFencesAPPLE 1 {0} RangeCheck glGenFencesNV 1 {0} RangeCheck glDeleteFencesNV 1 {0} RangeCheck glGenFramebuffersEXT 1 {0} RangeCheck glDeleteFramebuffersEXT 1 {0} RangeCheck glGenOcclusionQueriesNV 1 {0} RangeCheck glDeleteOcclusionQueriesNV 1 {0} RangeCheck glGenProgramsARB 1 {0} RangeCheck glDeleteProgramsARB 1 {0} RangeCheck glGenProgramsNV 1 {0} RangeCheck glDeleteProgramsNV 1 {0} RangeCheck glGenQueries 1 {0} RangeCheck glDeleteQueries 1 {0} RangeCheck glGenQueriesARB 1 {0} RangeCheck glDeleteQueriesARB 1 {0} RangeCheck glGenRenderbuffersEXT 1 {0} RangeCheck glDeleteRenderbuffersEXT 1 {0} RangeCheck glGenTextures 1 {0} RangeCheck glDeleteTextures 1 {0} RangeCheck glGenVertexArraysAPPLE 1 {0} RangeCheck glDeleteVertexArraysAPPLE 1 {0} # Javadoc for the GL class ClassJavadoc GL /** ClassJavadoc GL *

The basic interface to OpenGL, providing access to core ClassJavadoc GL * functionality up through the OpenGL 2.0 specification as well as ClassJavadoc GL * all vendor extensions.

ClassJavadoc GL * ClassJavadoc GL *

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

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

Exceptions to the window system extension naming rules: ClassJavadoc GL * ClassJavadoc GL *

ClassJavadoc GL * ClassJavadoc GL */ # Javadoc for the WGL class ClassJavadoc WGL /** ClassJavadoc WGL * Provides access to the Windows-specific OpenGL vendor extensions. ClassJavadoc WGL * See {@link GL} for more information. ClassJavadoc WGL */ # Javadoc for the GLX class ClassJavadoc GLX /** ClassJavadoc GLX * Provides access to the X11-specific OpenGL vendor extensions. ClassJavadoc GLX * See {@link GL} for more information. ClassJavadoc GLX */ # Javadoc for the CGL class ClassJavadoc CGL /** ClassJavadoc CGL * Provides access to the MacOSX-specific OpenGL vendor extensions. ClassJavadoc CGL * See {@link GL} for more information. ClassJavadoc CGL */ # Javadoc for the XVisualInfo class ClassJavadoc XVisualInfo /** ClassJavadoc XVisualInfo * Wrapper for the XVisualInfo data structure, referenced by some GLX OpenGL ClassJavadoc XVisualInfo * extensions. No other access is provided to these data structures so currently ClassJavadoc XVisualInfo * this wrapper is not useful to end users, though it is used in the implementation. ClassJavadoc XVisualInfo */ # Custom code for querying extensions and exposing # wglAllocateMemoryNV/glXAllocateMemoryNV CustomJavaCode GL /** CustomJavaCode GL * Returns true if the specified OpenGL core- or extension-function can be CustomJavaCode GL * used successfully through this GL instance given the current host (OpenGL CustomJavaCode GL * client) and display (OpenGL server) configuration.

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

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

CustomJavaCode GL * CustomJavaCode GL * A GL function is callable if it is statically linked, or can be CustomJavaCode GL * dynamically linked at runtime. CustomJavaCode GL * CustomJavaCode GL * Whether or not a GL function is available is determined as follows: CustomJavaCode GL *

CustomJavaCode GL * CustomJavaCode GL * NOTE:The availability of a function may change at runtime in CustomJavaCode GL * response to changes in the display environment. For example, when a window CustomJavaCode GL * is dragged from one display to another on a multi-display system, or when CustomJavaCode GL * the properties of the display device are modified (e.g., changing the color CustomJavaCode GL * depth of the display). Any application that is concerned with handling CustomJavaCode GL * these situations correctly should confirm availability after a display CustomJavaCode GL * change before calling a questionable OpenGL function. To detect a change in CustomJavaCode GL * the display device, please see {@link CustomJavaCode GL * GLEventListener#displayChanged(GLAutoDrawable,boolean,boolean)}. CustomJavaCode GL * CustomJavaCode GL * @param glFunctionName the name of the OpenGL function (e.g., use CustomJavaCode GL * "glBindRenderbufferEXT" to check if {@link CustomJavaCode GL * #glBindRenderbufferEXT(int,int)} is available). CustomJavaCode GL */ CustomJavaCode GL public boolean isFunctionAvailable(String glFunctionName); CustomJavaCode GL /** CustomJavaCode GL * Returns true if the specified OpenGL extension can be CustomJavaCode GL * used successfully through this GL instance given the current host (OpenGL CustomJavaCode GL * client) and display (OpenGL server) configuration.

CustomJavaCode GL * CustomJavaCode GL * @param glExtensionName the name of the OpenGL extension (e.g., CustomJavaCode GL * "GL_ARB_vertex_program"). CustomJavaCode GL */ CustomJavaCode GL public boolean isExtensionAvailable(String glExtensionName); CustomJavaCode GL /** CustomJavaCode GL * Provides platform-independent access to the wglAllocateMemoryNV / CustomJavaCode GL * glXAllocateMemoryNV extension. CustomJavaCode GL */ CustomJavaCode GL public java.nio.ByteBuffer glAllocateMemoryNV(int arg0, float arg1, float arg2, float arg3); CustomJavaCode GL /** Provides a platform-independent way to specify the minimum swap CustomJavaCode GL interval for buffer swaps. An argument of 0 disables CustomJavaCode GL sync-to-vertical-refresh completely, while an argument of 1 CustomJavaCode GL causes the application to wait until the next vertical refresh CustomJavaCode GL until swapping buffers. The default, which is platform-specific, CustomJavaCode GL is usually either 0 or 1. This function is not guaranteed to CustomJavaCode GL have an effect, and in particular only affects heavyweight CustomJavaCode GL onscreen components. */ CustomJavaCode GL public void setSwapInterval(int interval); CustomJavaCode GL /** CustomJavaCode GL * Returns an object through which platform-specific OpenGL extensions CustomJavaCode GL * (WGL, GLX, etc.) may be accessed. The data type of the returned CustomJavaCode GL * object and its associated capabilities are undefined. Most CustomJavaCode GL * applications will never need to call this method. It is highly CustomJavaCode GL * recommended that any applications which do call this method perform CustomJavaCode GL * all accesses on the returned object reflectively to guard CustomJavaCode GL * themselves against changes to the implementation. CustomJavaCode GL */ CustomJavaCode GL public Object getPlatformGLExtensions(); CustomJavaCode GL /** CustomJavaCode GL * Returns an object providing access to the specified OpenGL CustomJavaCode GL * extension. This is intended to provide a mechanism for vendors who CustomJavaCode GL * which to provide access to new OpenGL extensions without changing CustomJavaCode GL * the public API of the core package. For example, a user may request CustomJavaCode GL * access to extension "GL_VENDOR_foo" and receive back an object CustomJavaCode GL * which implements a vendor-specified interface which can call the CustomJavaCode GL * OpenGL extension functions corresponding to that extension. It is CustomJavaCode GL * up to the vendor to specify both the extension name and Java API CustomJavaCode GL * for accessing it, including which class or interface contains the CustomJavaCode GL * functions. CustomJavaCode GL * CustomJavaCode GL *

CustomJavaCode GL * CustomJavaCode GL * Note: it is the intent to add new extensions as quickly as possible CustomJavaCode GL * to the core GL API. Therefore it is unlikely that most vendors will CustomJavaCode GL * use this extension mechanism, but it is being provided for CustomJavaCode GL * completeness. CustomJavaCode GL */ CustomJavaCode GL public Object getExtension(String extensionName);