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+Name
+
+    EXT_present_opaque
+
+Name Strings
+
+    EGL_EXT_present_opaque
+
+Contributors
+
+    Eric Engestrom
+
+Contacts
+
+    Eric Engestrom (eric 'at' engestrom.ch)
+
+IP Status
+
+    No known IP claims.
+
+Status
+
+    Complete
+
+Version
+
+    #1, August 8, 2021
+
+Number
+
+    EGL Extension #146
+
+Extension Type
+
+    EGL display extension
+
+Dependencies
+
+    Requires EGL 1.4 and EGL_KHR_image_base extension
+
+    This extension is written against the wording of the EGL 1.4
+    specification, and EGL_KHR_image_base version 6.
+
+Overview
+
+    This extension adds a new EGL surface attribute EGL_PRESENT_OPAQUE_EXT
+    to indicate that the surface should be presented as opaque,
+    disregarding any alpha channel if present.
+    If surface attribute EGL_PRESENT_OPAQUE_EXT is EGL_TRUE, then the
+    surface will be presented as opaque.
+
+New Types
+
+    None
+
+New Procedures and Functions
+
+    None
+
+New Tokens
+
+    New EGLSurface attribute name:
+
+        EGL_PRESENT_OPAQUE_EXT                  0x31DF
+
+
+Additions to Chapter 3 of the EGL 1.4 Specification (Rendering Surfaces)
+
+    Change the second paragraph in section 3.5 on p. 28 (describing
+    eglCreateWindowSurface):
+
+        "Attributes that can be specified in attrib list include EGL_RENDER_BUFFER,
+        EGL_PRESENT_OPAQUE_EXT, EGL_VG_COLORSPACE, and EGL_VG_ALPHA_FORMAT."
+
+    Add the following paragraph in section 3.5 on p. 28 before
+    "EGL_VG_COLORSPACE specifies the color space used by OpenVG"
+    (describing eglCreateWindowSurface attrib_list):
+
+        "EGL_PRESENT_OPAQUE_EXT specifies the presentation opacity mode
+        of the window surface. If its value is EGL_TRUE, then the
+        surface's alpha channel (if any) will be ignored and considered
+        fully opaque. If its value is EGL_FALSE, then the compositor
+        doesn't change its behaviour, and considers the surface's alpha
+        channel the same way as if the extension wasn't implemented. The
+        default value of EGL_PRESENT_OPAQUE_EXT is EGL_FALSE."
+
+    Add to Table 3.5: Queryable surface attributes and types on p. 37
+
+        EGL_PRESENT_OPAQUE_EXT    boolean    Surface presentation opacity mode
+
+    Add following the second paragraph in section 3.6 on p. 39 (describing
+    eglQuerySurface):
+
+        "Querying EGL_PRESENT_OPAQUE_EXT returns the presentation
+        opacity mode of the surface. The presentation opacity mode of
+        window surfaces is specified in eglCreateWindowSurface. The
+        presentation opacity mode of pbuffer and pixmap surfaces is
+        always EGL_FALSE."
+
+    Add following after "which must be a valid native pixmap handle." in section 3.9.2 on
+    p. 53 (describing eglCopyBuffers):
+
+        "If attribute EGL_PRESENT_OPAQUE_EXT of surface has value of EGL_TRUE, then
+        an EGL_BAD_ACCESS error is returned."
+
+Issues
+
+    None
+
+Revision History
+
+    Version 2, 2021-08-17 (Eric Engestrom)
+      - Re-worded the compositor's behaviour for EGL_FALSE.
+      - Marked extension as Complete.
+
+    Version 1, 2021-08-08 (Eric Engestrom)
+      - Initial draft
+