diff --git a/opengl/specs/EGL_ANDROID_create_native_client_buffer.txt b/opengl/specs/EGL_ANDROID_create_native_client_buffer.txt
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+Name
+
+    ANDROID_create_native_client_buffer
+
+Name Strings
+
+    EGL_ANDROID_create_native_client_buffer
+
+Contributors
+
+    Craig Donner
+
+Contact
+
+    Craig Donner, Google Inc. (cdonner 'at' google.com)
+
+Status
+
+    Draft
+
+Version
+
+    Version 1, January 19, 2016
+
+Number
+
+    EGL Extension #XXX
+
+Dependencies
+
+    Requires EGL 1.2.
+
+    EGL_ANDROID_image_native_buffer and EGL_KHR_image_base are required.
+
+    This extension is written against the wording of the EGL 1.2
+    Specification as modified by EGL_KHR_image_base and
+    EGL_ANDROID_image_native_buffer.
+
+Overview
+
+    This extension allows creating an EGLClientBuffer backed by an Android
+    window buffer (struct ANativeWindowBuffer) which can be later used to
+    create an EGLImage.
+
+New Types
+
+    None.
+
+New Procedures and Functions
+
+EGLClientBuffer eglCreateNativeClientBufferANDROID(
+                        const EGLint *attrib_list)
+
+New Tokens
+
+    EGL_NATIVE_BUFFER_USAGE_ANDROID 0x3143
+    EGL_NATIVE_BUFFER_USAGE_PROTECTED_BIT_ANDROID 0x00000001
+    EGL_NATIVE_BUFFER_USAGE_RENDERBUFFER_BIT_ANDROID 0x00000002
+    EGL_NATIVE_BUFFER_USAGE_TEXTURE_BIT_ANDROID 0x00000004
+
+Changes to Chapter 3 of the EGL 1.2 Specification (EGL Functions and Errors)
+
+    Add the following to section 2.5.1 "EGLImage Specification" (as modified by
+    the EGL_KHR_image_base and EGL_ANDROID_image_native_buffer specifications),
+    below the description of eglCreateImageKHR:
+
+   "The command
+
+        EGLClientBuffer eglCreateNativeClientBufferANDROID(
+                                const EGLint *attrib_list)
+
+    may be used to create an EGLClientBuffer backed by an ANativeWindowBuffer
+    struct. EGL implementations must guarantee that the lifetime of the
+    returned EGLClientBuffer is at least as long as the EGLImage(s) it is bound
+    to, following the lifetime semantics described below in section 2.5.2; the
+    EGLClientBuffer must be destroyed no earlier than when all of its associated
+    EGLImages are destroyed by eglDestroyImageKHR. <attrib_list> is a list of
+    attribute-value pairs which is used to specify the dimensions, format, and
+    usage of the underlying buffer structure. If <attrib_list> is non-NULL, the
+    last attribute specified in the list must be EGL_NONE.
+
+    Attribute names accepted in <attrib_list> are shown in Table aaa,
+    together with the <target> for which each attribute name is valid, and
+    the default value used for each attribute if it is not included in
+    <attrib_list>.
+
+      +---------------------------------+----------------------+---------------+
+      | Attribute                       | Description          | Default Value |
+      |                                 |                      |               |
+      +---------------------------------+----------------------+---------------+
+      | EGL_NONE                        | Marks the end of the | N/A           |
+      |                                 | attribute-value list |               |
+      | EGL_WIDTH                       | The width of the     | 0             |
+      |                                 | buffer data          |               |
+      | EGL_HEIGHT                      | The height of the    | 0             |
+      |                                 | buffer data          |               |
+      | EGL_RED_SIZE                    | The bits of Red in   | 0             |
+      |                                 | the color buffer     |               |
+      | EGL_GREEN_SIZE                  | The bits of Green in | 0             |
+      |                                 | the color buffer     |               |
+      | EGL_BLUE_SIZE                   | The bits of Blue in  | 0             |
+      |                                 | the color buffer     |               |
+      | EGL_ALPHA_SIZE                  | The bits of Alpha in | 0             |
+      |                                 | the color buffer     |               |
+      |                                 | buffer data          |               |
+      | EGL_NATIVE_BUFFER_USAGE_ANDROID | The usage bits of    | 0             |
+      |                                 | the buffer data      |               |
+      +---------------------------------+----------------------+---------------+
+       Table aaa.  Legal attributes for eglCreateNativeClientBufferANDROID
+       <attrib_list> parameter.
+
+    The maximum width and height may depend on the amount of available memory,
+    which may also depend on the format and usage flags. The values of
+    EGL_RED_SIZE, EGL_GREEN_SIZE, and EGL_BLUE_SIZE must be non-zero and
+    correspond to a valid pixel format for the implementation. If EGL_ALPHA_SIZE
+    is non-zero then the combination of all four sizes must correspond to a
+    valid pixel format for the implementation. The
+    EGL_NATIVE_BUFFER_USAGE_ANDROID flag may include any of the following bits:
+
+        EGL_NATIVE_BUFFER_USAGE_PROTECTED_BIT_ANDROID: Indicates that the
+        created buffer must have a hardware-protected path to external display
+        sink. If a hardware-protected path is not available, then either don't
+        composite only this buffer (preferred) to the external sink, or (less
+        desirable) do not route the entire composition to the external sink.
+
+        EGL_NATIVE_BUFFER_USAGE_RENDERBUFFER_BIT_ANDROID: The buffer will be
+        used to create a renderbuffer. This flag must not be set if
+        EGL_NATIVE_BUFFER_USAGE_TEXTURE_BIT_ANDROID is set.
+
+        EGL_NATIVE_BUFFER_USAGE_TEXTURE_BIT_ANDROID: The buffer will be used to
+        create a texture. This flag must not be set if
+        EGL_NATIVE_BUFFER_USAGE_RENDERBUFFER_BIT_ANDROID is set.
+
+    Errors
+
+        If eglCreateNativeClientBufferANDROID fails, NULL will be returned, no
+        memory will be allocated, and one of the following errors will be
+        generated:
+
+       * If the value of EGL_WIDTH or EGL_HEIGHT is not positive, the error
+         EGL_BAD_PARAMETER is generated.
+
+       * If the combination of the values of EGL_RED_SIZE, EGL_GREEN_SIZE,
+         EGL_BLUE_SIZE, and EGL_ALPHA_SIZE is not a valid pixel format for the
+         EGL implementation, the error EGL_BAD_PARAMETER is generated.
+
+       * If the value of EGL_NATIVE_BUFFER_ANDROID is not a valid combination
+         of gralloc usage flags for the EGL implementation, or is incompatible
+         with the value of EGL_FORMAT, the error EGL_BAD_PARAMETER is
+         Generated.
+
+       * If both the EGL_NATIVE_BUFFER_USAGE_RENDERBUFFER_BIT_ANDROID and
+         EGL_NATIVE_BUFFER_USAGE_TEXTURE_BIT_ANDROID are set in the value of
+         EGL_NATIVE_BUFFER_USAGE_ANDROID, the error EGL_BAD_PARAMETER is
+         Generated."
+
+Issues
+
+    1. Should this extension define what combinations of formats and usage flags
+    EGL implementations are required to support?
+
+    RESOLVED: Partially.
+
+    The set of valid color combinations is implementation-specific and may
+    depend on additional EGL extensions, but generally RGB565 and RGBA888 should
+    be supported. The particular valid combinations for a given Android version
+    and implementation should be documented by that version.
+
+    2. Should there be an eglDestroyNativeClientBufferANDROID to destroy the
+    client buffers created by this extension?
+
+    RESOLVED: No.
+
+    A destroy function would add several complications:
+
+        a) ANativeWindowBuffer is a reference counted object, may be used
+           outside of EGL.
+        b) The same buffer may back multiple EGLImages, though this usage may
+           result in undefined behavior.
+        c) The interactions between the lifetimes of EGLImages and their
+           EGLClientBuffers would become needlessly complex.
+
+    Because ANativeWindowBuffer is a reference counted object, implementations
+    of this extension should ensure the buffer has a lifetime at least as long
+    as a generated EGLImage (via EGL_ANDROID_image_native_buffer). The simplest
+    method is to increment the reference count of the buffer in
+    eglCreateImagKHR, and then decrement it in eglDestroyImageKHR. This should
+    ensure proper lifetime semantics.
+
+Revision History
+
+#2 (Craig Donner, April 15, 2016)
+    - Set color formats and usage bits explicitly using additional attributes,
+    and add value for new token EGL_NATIVE_BUFFER_USAGE_ANDROID.
+
+#1 (Craig Donner, January 19, 2016)
+    - Initial draft.