kc3-lang/angle/extensions/ANGLE_platform_angle.txt

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• Hash : b9f240b1
  Author :
  Date : 2014-06-05T15:38:28
  

  Split the ANGLE_platform_angle_d3d extension by adding child extensions.
  
  Renames the ANGLE_platform_angle_d3d extension to ANGLE_platform_angle
  which acts as an umbrella extension for all the angle display types but
  requires the sub-extensions (d3d, opengl, software) to be present for the
  enums to be valid (similar to the OES_framebuffer_object extension).
  
  BUG=angle:668
  
  Change-Id: I2c00021558d8b781b20f948f5e0df03f734bd033
  Reviewed-on: https://chromium-review.googlesource.com/202597
  Reviewed-by: Shannon Woods <shannonwoods@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• extensions/ANGLE_platform_angle.txt

• Name
  
      ANGLE_platform_angle
  
  Name Strings
  
      EGL_ANGLE_platform_angle
  
  Contributors
  
      Scott Graham, Google
      Shannon Woods, Google
      Geoff Lang, Google
  
  Contacts
  
      Scott Graham, Google (scottmg 'at' google 'dot' com)
  
  Status
  
      Draft
  
  Version
  
      Version 2, 2014-06-05
  
  Number
  
      EGL Extension XXX
  
  Extension Type
  
      EGL client extension
  
  Dependencies
  
      Requires EGL_EXT_client_extensions to query its existence without
      a display.
  
      Requires EGL_EXT_platform_base.
  
      This extension is written against the wording of version 9 of the
      EGL_EXT_platform_base specification.
  
      ANGLE_platform_angle_d3d affects the definition of this extension.
      ANGLE_platform_angle_opengl affects the definition of this extension.
  
  Overview
  
      This extension defines how to create EGL resources from resources using
      the functions defined by EGL_EXT_platform_base.
  
  New Types
  
      None
  
  New Procedures and Functions
  
      None
  
  New Tokens
  
      Accepted as the <platform> argument of eglGetPlatformDisplayEXT:
  
          EGL_PLATFORM_ANGLE_ANGLE                           0x3201
  
      Accepted as an attribute name in the <attrib_list> argument of
      eglGetPlatformDisplayEXT:
  
          EGL_PLATFORM_ANGLE_TYPE_ANGLE                      0x3202
  
      Accepted as values for the EGL_PLATFORM_ANGLE_TYPE_ANGLE attribute:
  
          EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE              0x3203
  
  Additions to the EGL Specification
  
      None.
  
  New Behavior
  
      To determine if the EGL implementation supports this extension, clients
      should query the EGL_EXTENSIONS string of EGL_NO_DISPLAY.
  
      To obtain an EGLDisplay backed by a ANGLE display, call
      eglGetPlatformDisplayEXT with <platform> set to EGL_PLATFORM_ANGLE_ANGLE.
  
      The <native_display> parameter is of type EGLNativeDisplayType. If
      <native_display> is EGL_DEFAULT_DISPLAY a default display is returned.
      Multiple calls with the same <native_display> will return the same
      EGLDisplay handle. The value of EGL_PLATFORM_ANGLE_TYPE_ANGLE, if any,
      is ignored if there was previously a EGLDisplay successfully created for a
      given value of EGLNativeDisplayType.
  
      If no <attrib_list> is specified, the value of
      EGL_PLATFORM_ANGLE_TYPE_ANGLE is implicitly set to
      EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE. Otherwise, the value of
      EGL_PLATFORM_ANGLE_TYPE_ANGLE should be:
        - EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE for an implementation dependent
          display, equivalent to using a <native_display> of EGL_DEFAULT_DISPLAY,
        - EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE for a D3D9 display which translates
          to OpenGL ES,
        - EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE for a D3D11 display which
          translates to OpenGL ES,
        - EGL_PLATFORM_ANGLE_TYPE_D3D11_WARP_ANGLE a D3D11 WARP display which
          translates to OpenGL ES,
        - EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE for an OpenGL display which
          translates to OpenGL ES,
        - EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE for a native OpenGL ES display
  
      If no display matching the requested <native_display> or of the type
      requested by the value of EGL_PLATFORM_ANGLE_TYPE_ANGLE is available,
      EGL_NO_DISPLAY is returned. No error condition is raised in this case.
  
  Dependencies on ANGLE_platform_angle_d3d
  
      The EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE,
      EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE and
      EGL_PLATFORM_ANGLE_TYPE_D3D11_WARP_ANGLE <native_display> parameters to
      eglGetPlatformDisplayEXT are only valid if ANGLE_platform_angle_d3d is
      supported.
  
  Dependencies on ANGLE_platform_angle_opengl
  
      The EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE and
      EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE <native_display> parameters to
      eglGetPlatformDisplayEXT are only valid if ANGLE_platform_angle_opengl is
      supported.
  
  Issues
  
      None
  
  Revision History
  
      Version 1, 2014-02-04 (Scott Graham)
          - Initial draft
      Version 2, 2014-06-05 (Geoff Lang)
          - Rename extension from ANGLE_platform_angle_d3d to
            ANGLE_platform_angle.
          - Add sub-extensions for specific platforms.
  

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