Add glCompressedCopySubTextureCHROMIUM

gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt

Index: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt
diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt
index c236ce3835bb328f82d547547daac01a6e1cc807..94969ca9cbbf810a0bf2828f26bc86531e801ade 100644
--- a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt
+++ b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_compressed_copy_texture.txt
@@ -8,7 +8,7 @@ Name Strings
 
 Version
 
-    Last Modifed Date: Jun 15, 2015
+    Last Modifed Date: August 5, 2015
 
 Dependencies
 
@@ -71,6 +71,48 @@ New Procedures and Functions
 
     INVALID_VALUE is generated if level 0 of the source texture is not defined.
 
+    The command
+
+        void glCompressedCopySubTextureCHROMIUM (GLenum target,
+                                                 GLenum source_id,
+                                                 GLenum dest_id,
+                                                 GLint xoffset, GLint yoffset,
+                                                 GLint x, GLint y,
+                                                 GLsizei width, GLsizei height)
+
+    Copies the sub contents of texture referred to by <source_id> to <dest_id>
+    texture without redefining <dest_id> texture.
+
+    <target> uses the same parameters as TexImage2D.
+
+    <xoffset> and <yoffset> specify a texel offset in the x and y direction
+    respectively within the destination texture.
+
+    <x> and <y> specify specify a texel offset in the x and y direction

[reveman, 2015/08/10 16:00:46]

nit: s/specify specify/specify/

+    respectively within the source texture.
+
+    <width> specifies the width of the texture subimage.
+
+    <height> specifies the width of the texture subimage.
+
+    INVALID_OPERATION is generated if internal format of source texture is not
+    one of the following: GL_ATC_RGB_AMD, GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD,
+    GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
+    GL_ETC1_RGB8_OES
+
+    INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D.
+
+    INVALID_OPERATION is generated if the destination texture has not been
+    defined.
+
+    INVALID_VALUE is generated if level 0 of the source texture or
+    the destination texture is not defined.
+
+    INVALID_VALUE is generated if <xoffset> < 0 , or <yoffset> < 0.
+
+    INVALID_VALUE is generated if (<xoffset> + <width>) > dest_width,
+    or (<yoffset> + <height>) > dest_height.
+
 Errors
 
     None.
@@ -86,3 +128,4 @@ New State
 Revision History
 
     15/6/2015    Documented the extension.
+    5/8/2015     Added glCompressedCopySubTextureCHROMIUM.