kc3-lang/angle/extensions/ANGLE_client_arrays.txt

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• Author : Geoff Lang
  Date : 2017-02-13 16:07:35
  Hash : feb8c686
  Message : Add extensions to disable client arrays. Chrome doesn't allow any client data in its command buffer. Add an ANGLE extension to request a context that disallows client data. BUG=602737 Change-Id: If9d5144daea3c629a73562396000df59a671aad3 Reviewed-on: https://chromium-review.googlesource.com/441986 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• extensions/ANGLE_client_arrays.txt

• 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 more than 0 primitives 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
      ----  -------------  ---------  ----------------------------------------
        1   Feb 13, 2016   geofflang  Initial version