OES_byte_coordinates

GL_OES_byte_coordinates

Kari Pulli, Nokia (kari.pulli 'at' nokia.com)

Copyright (c) 2002-2013 The Khronos Group Inc. Copyright terms at
    http://www.khronos.org/registry/speccopyright.html

Khronos-approved extension specifications are updated in response to
issues and bugs prioritized by the Khronos OpenGL ES 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

Ratified by the Khronos BOP, July 23, 2003.

$Date: 2003/07/23 04:23:25 $ $Revision: 1.5 $

OpenGL ES Extension #4 (formerly OpenGL Extension #291)

OpenGL 1.1 is required.

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.

There is no intellectual property associated with this extension.

None known.

None

Accepted by the <type> parameter of VertexPointer and TexCoordPointer

BYTE     0x1400

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

None

None

None

None

None

Byte type commands are mapped on the client-side to the
appropriate short or int command protocol.

No new errors, giving byte as <type> argument to VertexPointer or
TexCoordPointer is not an error any more.

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

None