Name

    ANGLE_client_arrays

Name Strings

    GL_ANGLE_client_arrays

Contributors

    Geoff Lang

Contact

    Geoff Lang (geofflang 'at' google.com)

Notice

    Copyright (c) 2016 The Khronos Group Inc. Copyright terms at
        http://www.khronos.org/registry/speccopyright.html

Status

    Draft

Version

    Version 1, February 13, 2016

Number

    OpenGL ES Extension #??

Dependencies

    Requires OpenGL ES 2.0

    Written against the OpenGL ES 2.0 specification.

Overview

    This extension allows the OpenGL context to indicate if it supports drawing
    with client-side vertex or index data.  Client-side can be very inefficient
    and unsafe, it is convenient for some users to completely disable its usage.

New Procedures and Functions

    None

New Tokens

    Accepted by the <cap> parameter to IsEnabled and the <pname> parameter to
    GetBooleanv, GetIntegerv, GetFloatv, and GetInteger64v:

    CLIENT_ARRAYS_ANGLE                 0x93AA

Additions to the OpenGL ES Specification

    Add after paragraph 3 of section 2.8 "Vertex Arrays":

    If VertexAttribPointer is called while zero is bound to the ARRAY_BUFFER
    buffer object binding point, the pointer argument is not NULL, and
    CLIENT_ARRAYS_ANGLE is TRUE, an INVALID_OPERATION error is generated.

    Add to the end of section 2.9.1 "Vertex Arrays in Buffer Objects":

    Rendering commands that draw more than 0 primitives using enabled vertex
    attributes with no buffer bound when CLIENT_ARRAYS_ANGLE is TRUE generate
    an INVALID_OPERATION error.

    Add to the end of section 2.9.2 "Array Indices in Buffer Objects":

    Rendering commands that draw using index data when no buffer is bound to
    the ELEMENT_ARRAY_BUFFER binding point when CLIENT_ARRAYS_ANGLE is TRUE
    generate an INVALID_OPERATION error.

New State

    Modify Table 6.22, Miscellaneous

    Add:

                                          Initial
    Get Value            Type Get Command Value   Description
    -------------------- ---- ----------- ------- ---------------------
    CLIENT_ARRAYS_ANGLE  B    IsEnabled   TRUE    Client arrays enabled

Conformance Tests

    TBD

Issues

    None

Revision History

    Rev.    Date         Author                 Changes
    ----  -------------  ---------              ----------------------------------------
      2   Jun 12, 2018   Brandon Jones (Intel)  Remove primitives > 0 requirement to error
                                                when doing an indexed draw with no bound
                                                ELEMENT_ARRAY_BUFFER
      1   Feb 13, 2016   geofflang              Initial version