| Name |
| |
| OES_byte_coordinates |
| |
| Name Strings |
| |
| GL_OES_byte_coordinates |
| |
| Contact |
| |
| Kari Pulli, Nokia (kari.pulli 'at' nokia.com) |
| |
| Notice |
| |
| Copyright (c) 2002-2013 The Khronos Group Inc. Copyright terms at |
| http://www.khronos.org/registry/speccopyright.html |
| |
| Specification Update Policy |
| |
| Khronos-approved extension specifications are updated in response to |
| issues and bugs prioritized by the Khronos OpenGL Working Group. For |
| extensions which have been promoted to a core Specification, fixes will |
| first appear in the latest version of that core Specification, and will |
| eventually be backported to the extension document. This policy is |
| described in more detail at |
| https://www.khronos.org/registry/OpenGL/docs/update_policy.php |
| |
| Status |
| |
| Ratified by the Khronos BOP, July 23, 2003. |
| |
| Version |
| |
| $Date: 2003/07/23 04:23:25 $ $Revision: 1.5 $ |
| |
| Number |
| |
| OpenGL ES Extension #4 (formerly OpenGL Extension #291) |
| |
| Dependencies |
| |
| OpenGL 1.1 is required. |
| |
| Overview |
| |
| This extension allows specifying, additionally to all existing |
| values, byte-valued vertex and texture coordinates to be used. |
| |
| The main reason for introducing the byte-argument is to allow |
| storing data more compactly on memory-restricted environments. |
| |
| IP Status |
| |
| There is no intellectual property associated with this extension. |
| |
| Issues |
| |
| None known. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| Accepted by the <type> parameter of VertexPointer and TexCoordPointer |
| |
| BYTE 0x1400 |
| |
| Additions to Chapter 2 of the OpenGL 1.3 Specification (OpenGL Operation) |
| |
| Add signed byte entry points to first paragraph of |
| section 2.7 (Vertex Specification): |
| |
| void Vertex{234}bOES( T coords ); |
| void Vertex{234}bvOES( T coords ); |
| |
| and to the second paragraph: |
| |
| void TexCoord{1234}bOES( T coords ); |
| void TexCoord{1234}bvOES( T coords ); |
| |
| and to the third paragraph: |
| |
| void MultiTexCoord{1234}bOES( enum texture, T coords ); |
| void MultiTexCoord{1234}bvOES( enum texture, T coords ); |
| |
| Add byte to supported types in Table 2.4 (Vertex Array Sizes): |
| |
| Command Sizes Types |
| VertexPointer 2,3,4 byte,short,int,float,double |
| TexCoordPointer 1,2,3,4 byte,short,int,float,double |
| |
| Additions to Chapter 3 of the OpenGL 1.3 Specification (Rasterization) |
| |
| None |
| |
| Additions to Chapter 4 of the OpenGL 1.3 Specification (Per-Fragment |
| Operations and the Frame Buffer) |
| |
| None |
| |
| Additions to Chapter 5 of the OpenGL 1.3 Specification (Special Functions) |
| |
| None |
| |
| Additions to Chapter 6 of the OpenGL 1.3 Specification (State and |
| State Requests) |
| |
| None |
| |
| Additions to Appendix A of the OpenGL 1.3 Specification (Invariance) |
| |
| None |
| |
| Additions to the AGL/GLX/WGL Specifications |
| |
| GLX Protocol |
| |
| Byte type commands are mapped on the client-side to the |
| appropriate short or int command protocol. |
| |
| Errors |
| |
| No new errors, giving byte as <type> argument to VertexPointer or |
| TexCoordPointer is not an error any more. |
| |
| New State |
| |
| (table 6.6, pp. 214-215) |
| |
| Get Value Type Get Command Value Description Sec. Attribute |
| --------- ---- ----------- ----- ----------- ---- --------- |
| VERTEX_x Z_5 GetIntegerv FLOAT Type of 2.8 vertex-array |
| vertex |
| coordinates |
| TEXTURE_COORD_x 2 * x Z_5 GetIntegerv FLOAT Type of 2.8 vertex-array |
| texture |
| coordinates |
| _x = _ARRAY_TYPE |
| |
| New Implementation Dependent State |
| |
| None |
| |
| Revision History |
| |
| Sep 23, 2002 Kari Pulli Created the document |
| Sep 26, 2002 Kari Pulli Incorporated comments by Jon Leech |
| Feb 26, 2003 David Blythe Changed prefix to OES |
| Jul 08, 2003 David Blythe Deleted Dependencies on section, added |
| extension number, narrow state table |
| Jul 11, 2003 David Blythe Changed to use OES suffixes |
| Jul 12, 2003 David Blythe Added note about GLX protocol |
