kc3-lang/angle/extensions/ANGLE_rbgx_internal_format.txt

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• Hash : 4f42a4d3
  Author :
  Date : 2021-12-01T18:57:48
  

  Add more support for GL_RGBX8_ANGLE
  
  Update EquivalentBlitInternalFormat(), ValidReadPixelsFormatEnum(), and
  ValidReadPixelsFormatType() to support GL_RGBX8_ANGLE.
  
  Also update ANGLE_rgbx_internal_format.txt to indicate the new support
  in glBlitFramebuffer() and glReadPixels() for GL_RGBX8_ANGLE.
  
  Bug: angleproject:6690
  Test: BlitFramebufferTestES31.BlitMultisampledRGBX8ToRGB8
  Test: WebGL2CompatibilityTest.ReadPixelsRgbx8AngleUnsignedByte
  Change-Id: I75b6d5cb46eebbc904b86cc8e6bd18aca5403684
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3312367
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Tim Van Patten <timvp@google.com>
  

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• extensions/ANGLE_rbgx_internal_format.txt

• Name
  
      ANGLE_rgbx_internal_format
  
  Name Strings
  
      GL_ANGLE_rgbx_internal_format
  
  Contributors
  
      Tim Van Patten, Google
  
  Contacts
  
      Tim Van Patten, Google (timvp 'at' google 'dot' com)
  
  Notice
  
      Copyright (c) 2021 The Khronos Group Inc. Copyright terms at
          http://www.khronos.org/registry/speccopyright.html
  
  Status
  
      Draft.
  
  Version
  
      Version 1, November 22, 2021
  
  Number
  
      OpenGL ES Extension ###
  
  Dependencies
  
      OpenGL ES 2.0 is required.
  
  Overview
  
      This extension introduces a sized internal RGBX format. This is a 32-bit representation of the
      24-bit RGB format, with the Alpha channel ignored.
  
      glBlitFramebuffer() will treat RGBX8 as RGB8 when validating the formats for the READ and DRAW
      framebuffers match, since the X channel is ignored.
  
      glReadPixels() will accept the following format+type combinations:
          1. format = GL_RGBX8_ANGLE, type = GL_UNSIGNED_BYTE
  
  New Types
  
      None.
  
  New Procedures and Functions
  
      None.
  
  New Tokens
  
      // 32-bit RGBX format
      GL_RGBX8_ANGLE                    0x96BA
  
  Issues
  
      None.
  
  Revision History
  
      #1 - (November 22, 2021) Tim Van Patten
           Original draft
  

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