diff -r 000000000000 -r 6474c204b198 gfx/angle/extensions/ANGLE_texture_compression_dxt.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/extensions/ANGLE_texture_compression_dxt.txt	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,163 @@
+Name
+
+    ANGLE_texture_compression_dxt
+
+Name Strings
+
+    GL_ANGLE_texture_compression_dxt1
+    GL_ANGLE_texture_compression_dxt3
+    GL_ANGLE_texture_compression_dxt5
+
+Contributors
+
+    Gregg Tavares, Google Inc.
+    Daniel Koch, TransGaming Inc.
+    Al Patrick, Google Inc.
+
+Contacts
+
+    Gregg Tavares, Google Inc. (gman 'at' google 'dot' com)
+
+Status
+
+    Implemented in ANGLE ES2
+
+Version
+
+    Last Modified Date: Sept 22, 2012
+    Author Revision: 2
+
+Number
+
+    OpenGL ES Extension #111
+
+Dependencies
+
+    Requires OpenGL ES 1.0.
+
+    The extension is written against the OpenGL ES 2.0 specification.
+
+Overview
+
+    These extensions are exactly the same as EXT_texture_compression_dxt1
+    except they additionally expose the COMPRESSED_RGBA_S3TC_DXT3_ANGLE and
+    COMPRESSED_RGBA_S3TC_DXT5_ANGLE formats and have a size restrictions
+    such that the size must be a multiple of four (except for mip levels
+    where the dimensions are either 2 or 1).
+
+    See EXT_texture_compression_dxt1 for the full list of changes. Also
+    see EXT_texture_compression_s3tc for a description of the formats.
+
+IP Status
+
+    A license to the S3TC Intellectual Property may be necessary for 
+    implementation of this extension.  You should consult with your 
+    Attorney to determine the need for a license.
+
+New Procedures and Functions
+
+    None.
+
+New Types
+
+    None.
+
+New Tokens
+
+    Accepted by the <internalformat> parameter of CompressedTexImage2D
+    and the <format> parameter of CompressedTexSubImage2D:
+
+    COMPRESSED_RGB_S3TC_DXT1_ANGLE                    0x83F0
+    COMPRESSED_RGBA_S3TC_DXT1_ANGLE                   0x83F1
+    COMPRESSED_RGBA_S3TC_DXT3_ANGLE                   0x83F2
+    COMPRESSED_RGBA_S3TC_DXT5_ANGLE                   0x83F3
+
+Additions to Chapter 3 of the OpenGL ES 2.0 Specification (Rasterization)
+
+    Add the following to Section 3.7.3 (Compressed Texture Images)
+    (at the end of the description of the CompressedTexImage2D command):
+
+    Compressed Internal Format        Base Internal Format
+    ==========================        ====================
+    COMPRESSED_RGB_S3TC_DXT1_ANGLE    RGB
+    COMPRESSED_RGBA_S3TC_DXT1_ANGLE   RGBA
+    COMPRESSED_RGBA_S3TC_DXT3_ANGLE   RGBA
+    COMPRESSED_RGBA_S3TC_DXT5_ANGLE   RGBA
+
+    Table 3.x: Specific Compressed Internal Formats
+
+    If <internalformat> is one of the S3TC formats listed in Table 3.x,
+    the compressed texture is stored in the appropriate S3TC compressed
+    texture format (see Appendix). The GL and the S3TC texture compression
+    algorithm support only 2D images without borders.
+
+    CompressedTexImage2D will produce the INVALID_OPERATION error when
+    <internalformat> is one of the values from Table 3.x under the following
+    conditions: 
+
+      * <border> is non-zero.
+      * <width> is not one, two, or a multiple of four.
+      * <height> is not one, two, or a multiple of four.
+
+    Add the following to Section 3.7.3 (Compressed Texture Images)
+    (at the end of the description of the CompressedTexSubImage2D command):
+
+    If the internal format of the texture image being modified is listed
+    in Table 3.x, the texture is stored in the appropriate S3TC compressed
+    texture format (see Appendix). Since DXT/S3TC images are easily edited
+    along 4x4 texel boundaries, the limitations of CompressedTexSubImage2D
+    are relaxed. CompressedTexSubImage2D will result in an INVALID_OPERATION
+    error only if one of the following conditions occurs:
+
+      * <width> is not a multiple of four or equal to TEXTURE_WIDTH.
+      * <height> is not a multipls of four or equal to TEXTURE_HEIGHT.
+      * <xoffset> or <yoffset> is not a multiple of four.
+      * <format> does not match the internal format of the texture image
+        being modified.
+
+    The following restrictions at the end of section 3.7.3 do not apply
+    to S3TC DXT texture formats, since subimage modification is straightforward
+    as long as the subimage is properly aligned.
+
+Errors
+
+    INVALID_OPERATION is generated by CompressedTexImage2D if <internalformat>
+    is one of the compressed internal formats from Table 3.x and any of the 
+    following apply:
+      - <border> is not equal to zero.
+      - <width> is not one, two, or a multiple of four. 
+      - <height> is not one, two, or a multiple of four. 
+
+    INVALID_OPERATION is generated by TexImage2D and CopyTexImage2D if
+    <internalformat> is one of the compressed internal formats from
+    Table 3.x.
+
+    INVALID_OPERATION is generated by TexSubImage2D and CopyTexSubImage2D
+    if the internal format of the texture currently bound to <target> is
+    one of the compressed internal formats from Table 3.x.
+
+    INVALID_OPERATION is generated by CompressedTexSubImage2D if <format>
+    is one of the compressed interal formats from Table 3.x and any of the
+    following apply:
+      - <width> is not a multiple of four or equal to TEXTURE_WIDTH;
+      - <height> is not a multiple of four or equal to TEXTURE_HEIGHT;
+      - <xoffset> or <yoffset> is not a multiple of four;
+      - <format> does not match the internal format of the texture image
+      being modified.
+
+New State
+
+    None.
+
+Appendix: 
+
+    The format for the S3TC Compressed Texture Images Formats is documented
+    in the appendix of EXT_texture_compression_s3tc.
+
+Revision History
+
+    Revision 1, 2010/08/06 - gman
+      - Initial revision
+    Revision 2, 2012/09/22 - dgkoch
+      - Added DXT1 formats and documented multiple of 4 restriction.
+