| Name |
| |
| EXT_create_context_es_profile |
| EXT_create_context_es2_profile |
| |
| Name Strings |
| |
| GLX_EXT_create_context_es_profile |
| GLX_EXT_create_context_es2_profile |
| |
| NOTE: implementations of this extension must export BOTH extension |
| strings, for backwards compatibility with applications written |
| against version 1 of this extension. |
| |
| Contact |
| |
| Jon Leech (jon 'at' alumni.caltech.edu) |
| Piers Daniell (pdaniell 'at' nvidia.com) |
| |
| IP Status |
| |
| No known IP claims. |
| |
| Status |
| |
| Complete. |
| |
| Version |
| |
| Version 4, April 6, 2012 |
| |
| Number |
| |
| 399 |
| |
| Dependencies |
| |
| GLX 1.4 is required. |
| |
| GLX_ARB_create_context is required. |
| |
| GLX_ARB_create_context_profile is required. |
| |
| An OpenGL ES implementation is required. |
| |
| Overview |
| |
| This extension allows creating an OpenGL ES context. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| Accepted as a bit in the attribute value for |
| GLX_CONTEXT_PROFILE_MASK_ARB in <*attrib_list>: |
| |
| GLX_CONTEXT_ES_PROFILE_BIT_EXT 0x00000004 |
| GLX_CONTEXT_ES2_PROFILE_BIT_EXT 0x00000004 |
| |
| Additions to the OpenGL / WGL Specifications |
| |
| None. This specification is written for GLX. |
| |
| Additions to the GLX 1.4 Specification |
| |
| This extension modifies language specified in the |
| GLX_ARB_create_context and GLX_ARB_create_context_profile |
| extensions. |
| |
| In the description of glXCreateContextAttribsARB, replace the |
| sentence |
| |
| "... If a version less than or equal to 3.0 is requested, the context |
| returned may implement any of the following versions:" |
| |
| with |
| |
| "... If the version requested is a valid and supported OpenGL-ES version, |
| and the GLX_CONTEXT_ES_PROFILE_BIT_EXT bit is set in the |
| GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the context |
| returned will implement the OpenGL ES version requested. |
| |
| Otherwise, if a version less than or equal to 3.0 is requested, the |
| context returned may implement any of the following versions:" |
| |
| |
| Replace the sentence |
| |
| "... If the requested OpenGL version is less than 3.2, |
| GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality of the |
| context is determined solely by the requested version." |
| |
| with |
| |
| "... If the GLX_CONTEXT_ES_PROFILE_BIT_EXT bit is set, and the |
| requested version is a valid and supported OpenGL-ES implementation, |
| then a context implementing that OpenGL ES version is returned; |
| otherwise, if the requested OpenGL version is less than |
| 3.2, GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality |
| of the context is determined solely by the requested version." |
| |
| |
| Add prior to the sentence |
| |
| "The attribute name GLX_CONTEXT_FLAGS_ARB specifies a set of flag |
| bits affecting the rendering context.": |
| |
| "If an OpenGL ES profile is requested, then the context returned |
| cannot implement additional functionality, including functionality |
| defined only by the core or compatibility profiles, unless such |
| functionality is defined by extensions that are themselves specified |
| relative to that specific OpenGL ES version[*]. |
| [*] Such functionality should have a corresponding extension |
| specification in the OpenGL ES Registry. In some |
| implementations, vendor extensions defined relative to the OpenGL ES |
| version, but not yet added to the OpenGL ES Registry, may also be |
| supported." |
| |
| Replace the bullet point starting "* If attribute |
| GLX_CONTEXT_PROFILE_MASK_ARB has no bits set;..." with |
| |
| "* If attribute GLX_CONTEXT_PROFILE_MASK_ARB has no bits set; has any |
| bits set other than GLX_CONTEXT_CORE_PROFILE_BIT_ARB, |
| GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, or |
| GLX_CONTEXT_ES_PROFILE_BIT_EXT; has more than one of these bits |
| set; or if the implementation does not supported the requested |
| profile, then GLXBadProfileARB is generated." |
| |
| GLX Errors |
| |
| None |
| |
| GLX Protocol |
| |
| None |
| |
| Errors |
| |
| GLXBadProfileARB is generated if the value of |
| GLX_CONTEXT_PROFILE_MASK_ARB contains more than a single valid |
| profile bit. |
| |
| New State |
| |
| None |
| |
| New Implementation Dependent State |
| |
| None |
| |
| Conformance Tests |
| |
| TBD |
| |
| Sample Code |
| |
| TBD |
| |
| Issues |
| |
| All non-window-system dependent issues described in the |
| WGL_EXT_create_context_es_profile extension specification apply |
| equally to this extension. |
| |
| Revision History |
| |
| Version 4, 2012/04/06 - Specify that both name strings must be |
| exported for backwards compatibility. Restore GLXBadProfileARB |
| error that was mistakenly changed in version 3. |
| |
| Version 3, 2012/03/28 - Add support for any OpenGL-ES version, not |
| just version 2.0. Alias GLX_CONTEXT_ES2_PROFILE_BIT_EXT with |
| GLX_CONTEXT_ES_PROFILE_BIT_EXT and the extension name |
| GLX_EXT_create_context_es2_profile with |
| GLX_EXT_create_context_es_profile. |
| |
| Version 2, 2010/08/04 - Fix typos and assign extension number. |
| |
| Version 1, 2010/05/18 - Recast the OpenGL ES 2.0 "profile" mechanism |
| into a separate EXT layered on the ARB profiled context creation |
| mechanism. |
