kc3-lang/angle/extensions/EGL_ANGLE_display_robust_resource_initialization.txt

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• Author : Jamie Madill
  Date : 2017-06-01 13:10:42
  Hash : 948bbe51
  Message : Redesign robust resource init as a display extension. Also correct the enum allocation to values that are available to ANGLE. BUG=angleproject:1635 Change-Id: I443f5654aa6a5049b4a1ae4c253cd6473b4e446e Reviewed-on: https://chromium-review.googlesource.com/520002 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>

• extensions/EGL_ANGLE_display_robust_resource_initialization.txt

• Name
  
      EGL_ANGLE_display_robust_resource_initialization.txt
  
  Name Strings
  
      EGL_ANGLE_display_robust_resource_initialization
  
  Contributors
  
      Geoff Lang, Google
      Ken Russell, Google
  
  Contacts
  
      Shannon Woods, Google (shannonwoods 'at' google.com)
  
  Status
  
      Draft
  
  Version
  
      Version 1, January 7, 2015
  
  Number
  
      EGL Extension TBD
  
  Dependencies
  
      This extension is written against the wording of the EGL 1.5
      specification.
  
      An OpenGL ES implementation supporting ANGLE_robust_resource_initialization
      or an implementation supporting equivalent functionality is required.
  
      For EGL 1.4 contexts, requires EGL_EXT_client_extensions and
      EGL_EXT_platform_base, but funtionality is identical.
  
  Overview
  
      This extension allows initializing an OpenGL ES Display supporting
      robust resource initialization.
  
  New Types
  
      None
  
  New Procedures and Functions
  
      None
  
  New Tokens
  
      Accepted as an attribute name in the <*attrib_list> argument to
      eglGetPlatformDisplay:
  
          EGL_DISPLAY_ROBUST_RESOURCE_INITIALIZATION_ANGLE    0x3453
  
  Additions to the EGL 1.5 Specification
  
      Add a new section entitled "OpenGL ES Robust Resource Initialization"
      to section 3.2:
  
      "If the attribute EGL_DISPLAY_ROBUST_RESOURCE_INITIALIZATION_ANGLE
      is set to EGL_TRUE, a Display supporting <robust resource initialization>
      will be returned. OpenGL ES contexts created on this display must support
      the ANGLE_robust_resource_initialization extension, or equivalent core API
      functionality.
      If the implementation does not support robust resource initialization,
      and EGL_DISPLAY_ROBUST_RESOURCE_INITIALIZATION_ANGLE is EGL_TRUE,
      EGL_NO_DISPLAY will be returned.
      The default value of EGL_DISPLAY_ROBUST_RESOURCE_INITIALIZATION_ANGLE
      is EGL_FALSE."
  
  Issues
  
      (1) Should this be a Display or Context creation extension?
  
      RESOLVED: Making this a Context creation extension has complications in
      the implementation - what happens to resources shared between Contexts
      with and without the extension enabled? Also for display-created resources,
      such as those used in the D3D11 SwapChain, there's no way to specify if
      we want them robustly initialized. Hence it is clearer to specify this
      extension as a Display extension.
  
  Revision History
  
      Version 1, 2015/01/07 - first draft.
      Version 2, 2017/03/01 - renamed extension and enum.
      Version 3, 2017/05/31 - renamed extension and made into display extension.