Move extension descriptions out of extensions/ subdirectory
[free-sw/xcb/proto] / src / extensions / glx.xml
diff --git a/src/extensions/glx.xml b/src/extensions/glx.xml
deleted file mode 100644 (file)
index 5f8b5e6..0000000
+++ /dev/null
@@ -1,1466 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-Copyright (C) 2005 Jeremy Kolb.
-All Rights Reserved.
-
-Permission is hereby granted, free of charge, to any person ob/Sintaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the names of the authors or their
-institutions shall not be used in advertising or otherwise to promote the
-sale, use or other dealings in this Software without prior written
-authorization from the authors.
--->
-
-<!--
-Note that on X.org servers before 6.9 (and probably others as well) the length
-field in the reply is computed incorrectly for GetFBConfigs and
-VendorPrivateWithReply vendor_code 0x10004 (GetFBConfigsSGIX). For these
-requests the reply structure begins:
-       <pad bytes="1" />
-       <field type="CARD32" name="numVisuals" />
-       <field type="CARD32" name="numProps" />
-The correct value for the length field is
-       numVisuals * numProps * 2
-but on broken servers the "* 2" was missing. A workaround that is correct for
-all implementations is to rewrite the length field on receipt on the client
-side, using the expression above.
-
-The patch that fixed this server bug in X.org CVS is here:
-       http://cvs.freedesktop.org/xorg/xserver/xorg/GL/glx/glxcmds.c?r1=1.6&r2=1.7
--->
-
-<xcb header="glx" extension-xname="GLX" extension-name="Glx">
-       <!-- target support: 1.3 -->
-
-       <import>xproto</import>
-
-       <xidtype name="PIXMAP" />
-       <xidtype name="CONTEXT" />
-       <xidtype name="PBUFFER" />
-       <xidtype name="WINDOW" />
-        <xidtype name="FBCONFIG" />
-
-        <xidunion name="DRAWABLE">
-            <type>xproto:WINDOW</type>
-            <type>PBUFFER</type>
-            <type>glx:PIXMAP</type>
-            <type>glx:WINDOW</type>
-        </xidunion>
-
-       <typedef oldname="float" newname="FLOAT32" />
-       <typedef oldname="double" newname="FLOAT64" />
-        <typedef oldname="CARD32" newname="BOOL32" />
-        <typedef oldname="CARD32" newname="CONTEXT_TAG" />
-           
-       <!-- Errors -->
-       <error name="Generic" number="-1"> <!-- FIXME: fake number -->
-               <field type="CARD32" name="bad_value" />
-               <field type="CARD16" name="minor_opcode" />
-               <field type="CARD8" name="major_opcode" />
-               <pad bytes="21" />
-       </error>
-
-       <errorcopy name="BadContext" number="0" ref="Generic" />
-       <errorcopy name="BadContextState" number="1" ref="Generic" />
-       <errorcopy name="BadDrawable" number="2" ref="Generic" />
-       <errorcopy name="BadPixmap" number="3" ref="Generic" />
-       <errorcopy name="BadContextTag" number="4" ref="Generic" />
-       <errorcopy name="BadCurrentWindow" number="5" ref="Generic" />
-       <errorcopy name="BadRenderRequest" number="6" ref="Generic" />
-       <errorcopy name="BadLargeRequest" number="7" ref="Generic" />
-       <errorcopy name="UnsupportedPrivateRequest" number="8" ref="Generic" />
-       <errorcopy name="BadFBConfig" number="9" ref="Generic" />
-       <errorcopy name="BadPbuffer" number="10" ref="Generic" />
-       <errorcopy name="BadCurrentDrawable" number="11" ref="Generic" />
-       <errorcopy name="BadWindow" number="12" ref="Generic" />
-
-       <!-- Events -->
-       <event name="PbufferClobber" number="0">
-               <field type="CARD16" name="event_type" />
-               <field type="CARD16" name="draw_type" />
-               <field type="glx:DRAWABLE" name="drawable" />
-               <field type="CARD32" name="b_mask" />
-               <field type="CARD16" name="aux_buffer" />
-               <field type="CARD16" name="x" />
-               <field type="CARD16" name="y" />
-               <field type="CARD16" name="width" />
-               <field type="CARD16" name="height" />
-               <field type="CARD16" name="count" />
-               <pad bytes="4" />
-       </event>
-
-       <!-- enums for PbufferClobber event/draw type -->
-       <enum name="PBCET">
-               <item name="Damaged">
-                       <value>0x8017</value>
-               </item>
-               <item name="Saved">
-                       <value>0x8018</value>
-               </item>
-       </enum>
-
-       <enum name="PBCDT">
-               <item name="Window">
-                       <value>0x8019</value>
-               </item>
-               <item name="Pbuffer">
-                       <value>0x801A</value>
-               </item>
-       </enum>
-
-       <!-- Requests -->
-       <request name="Render" opcode="1" combine-adjacent="true">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <list type="BYTE" name="data" />
-       </request>
-
-       <request name="RenderLarge" opcode="2">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD16" name="request_num" />
-               <field type="CARD16" name="request_total" />
-               <field type="CARD32" name="data_len" />
-               <list type="BYTE" name="data">
-                   <fieldref>data_len</fieldref>
-               </list>
-       </request>
-
-       <request name="CreateContext" opcode="3">
-               <field type="glx:CONTEXT" name="context" />
-               <field type="VISUALID" name="visual" />
-               <field type="CARD32" name="screen" />
-               <field type="glx:CONTEXT" name="share_list" />
-               <field type="BOOL" name="is_direct" />
-               <pad bytes="3" />
-       </request>
-
-       <request name="DestroyContext" opcode="4">
-               <field type="glx:CONTEXT" name="context" />
-       </request>
-
-       <request name="MakeCurrent" opcode="5">
-               <field type="glx:DRAWABLE" name="drawable" />
-               <field type="glx:CONTEXT" name="context" />
-               <field type="CONTEXT_TAG" name="old_context_tag" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CONTEXT_TAG" name="context_tag" />
-                       <pad bytes="20" />
-               </reply>
-       </request>
-
-       <request name="IsDirect" opcode="6">
-               <field type="glx:CONTEXT" name="context" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="BOOL" name="is_direct" />
-                       <pad bytes="23" />
-               </reply>
-       </request>
-
-       <request name="QueryVersion" opcode="7">
-               <field type="CARD32" name="major_version" />
-               <field type="CARD32" name="minor_version" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="major_version" />
-                       <field type="CARD32" name="minor_version" />
-                       <pad bytes="16" />
-               </reply>
-       </request>
-
-       <request name="WaitGL" opcode="8">
-               <field type="CONTEXT_TAG" name="context_tag" />
-       </request>
-
-       <request name="WaitX" opcode="9">
-               <field type="CONTEXT_TAG" name="context_tag" />
-       </request>
-
-       <request name="CopyContext" opcode="10">
-               <field type="glx:CONTEXT" name="src" />
-               <field type="glx:CONTEXT" name="dest" />
-               <field type="CARD32" name="mask" />
-               <field type="CONTEXT_TAG" name="src_context_tag" />
-       </request>
-
-       <!-- Enum for CopyContext: mask -->
-       <enum name="GC">
-               <item name="GL_CURRENT_BIT"><value>0x00000001</value></item>
-               <item name="GL_POINT_BIT"><value>0x00000002</value></item>
-               <item name="GL_LINE_BIT"><value>0x00000004</value></item>
-               <item name="GL_POLYGON_BIT"><value>0x00000008</value></item>
-               <item name="GL_POLYGON_STIPPLE_BIT"><value>0x00000010</value></item>
-               <item name="GL_PIXEL_MODE_BIT"><value>0x00000020</value></item>
-               <item name="GL_LIGHTING_BIT"><value>0x00000040</value></item>
-               <item name="GL_FOG_BIT"><value>0x00000080</value></item>
-               <item name="GL_DEPTH_BUFFER_BIT"><value>0x00000100</value></item>
-               <item name="GL_ACCUM_BUFFER_BIT"><value>0x00000200</value></item>
-               <item name="GL_STENCIL_BUFFER_BIT"><value>0x00000400</value></item>
-               <item name="GL_VIEWPORT_BIT"><value>0x00000800</value></item>
-               <item name="GL_TRANSFORM_BIT"><value>0x00001000</value></item>
-               <item name="GL_ENABLE_BIT"><value>0x00002000</value></item>
-               <item name="GL_COLOR_BUFFER_BIT"><value>0x00004000</value></item>
-               <item name="GL_HINT_BIT"><value>0x00008000</value></item>
-               <item name="GL_EVAL_BIT"><value>0x00010000</value></item>
-               <item name="GL_LIST_BIT"><value>0x00020000</value></item>
-               <item name="GL_TEXTURE_BIT"><value>0x00040000</value></item>
-               <item name="GL_SCISSOR_BIT"><value>0x00080000</value></item>
-               <item name="GL_ALL_ATTRIB_BITS"><value>0x000ffffff</value></item>
-       </enum>
-
-       <request name="SwapBuffers" opcode="11">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="glx:DRAWABLE" name="drawable" />
-       </request>
-
-       <request name="UseXFont" opcode="12">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="FONT" name="font" />
-               <field type="CARD32" name="first" />
-               <field type="CARD32" name="count" />
-               <field type="CARD32" name="list_base" />
-       </request>
-
-       <request name="CreateGLXPixmap" opcode="13">
-               <field type="CARD32" name="screen" />
-               <field type="VISUALID" name="visual" />
-               <field type="xproto:PIXMAP" name="pixmap" />
-               <field type="glx:PIXMAP" name="glx_pixmap" />
-       </request>
-
-        
-       <request name="GetVisualConfigs" opcode="14">
-               <field type="CARD32" name="screen" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="num_visuals" />
-                       <field type="CARD32" name="num_properties" />
-                        <pad bytes="16" />
-                        <list type="CARD32" name="property_list" />
-               </reply>
-       </request>
-
-       <request name="DestroyGLXPixmap" opcode="15">
-               <field type="glx:PIXMAP" name="glx_pixmap" />
-       </request>
-
-       <!--
-       Context tag is not in the proto, should be part of the list of bytes
-       but every VendorPrivate and VendorPrivateWithReply request uses them
-       so it is safe to put them in.  That's how Mesa does it.
-       -->
-       <request name="VendorPrivate" opcode="16">
-               <field type="CARD32" name="vendor_code" />
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <list type="BYTE" name="data" />
-       </request>
-
-       <request name="VendorPrivateWithReply" opcode="17">
-               <field type="CARD32" name="vendor_code" />
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <list type="BYTE" name="data" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="retval" />
-                       <list type="BYTE" name="data1">
-                               <value>24</value>
-                       </list>
-                       <list type="BYTE" name="data2" />
-               </reply>
-       </request>
-
-       <request name="QueryExtensionsString" opcode="18">
-               <field type="CARD32" name="screen" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <pad bytes="16" />
-               </reply>
-       </request>
-
-       <request name="QueryServerString" opcode="19">
-               <field type="CARD32" name="screen" />
-               <field type="CARD32" name="name" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="str_len" />
-                       <pad bytes="16" />
-                       <list type="CARD8" name="string">
-                               <fieldref>str_len</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="ClientInfo" opcode="20">
-               <field type="CARD32" name="major_version" />
-               <field type="CARD32" name="minor_version" />
-               <field type="CARD32" name="str_len" />
-               <list type="CARD8" name="string">
-                       <fieldref>str_len</fieldref>
-               </list>
-       </request>
-
-       <!-- Start of GLX 1.3 Requests -->
-
-       <request name="GetFBConfigs" opcode="21">
-               <field type="CARD32" name="screen" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="num_FB_configs" />
-                       <field type="CARD32" name="num_properties" />
-                        <pad bytes="16" />
-                        <!--
-                       <valueparam value-mask-type="CARD32"
-                               value-mask-name="value_mask"
-                                value-list-name="value_list" />
-                            -->
-                        <list type="CARD32" name="property_list" />
-               </reply>
-       </request>
-
-       <request name="CreatePixmap" opcode="22">
-               <field type="CARD32" name="screen" />
-               <field type="CARD32" name="fbconfig" />
-               <field type="xproto:PIXMAP" name="pixmap" />
-               <field type="glx:PIXMAP" name="glx_pixmap" />
-               <field type="CARD32" name="num_attribs" />  
-       </request>
-
-       <request name="DestroyPixmap" opcode="23">
-               <field type="glx:PIXMAP" name="glx_pixmap" />
-       </request>
-
-       <request name="CreateNewContext" opcode="24">
-               <field type="glx:CONTEXT" name="context" />
-               <field type="CARD32" name="fbconfig" />
-               <field type="SCREEN" name="screen" />
-               <field type="CARD32" name="render_type" />
-               <field type="CARD32" name="share_list" />
-               <field type="BOOL" name="is_direct" />
-               <field type="CARD8" name="reserved1" />
-               <field type="CARD16" name="reserved2" />
-       </request>
-
-       <request name="QueryContext" opcode="25">
-               <field type="glx:CONTEXT" name="context" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="num_attributes"/>
-                       <pad bytes="20" />
-                       <valueparam value-mask-type="CARD32"
-                               value-mask-name="value_mask"
-                               value-list-name="value_list" />
-               </reply>
-       </request>
-
-       <request name="MakeContextCurrent" opcode="26">
-               <field type="CONTEXT_TAG" name="old_context_tag" />
-               <field type="glx:DRAWABLE" name="drawable" />
-               <field type="glx:DRAWABLE" name="read_drawable" />
-               <field type="glx:CONTEXT" name="context" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CONTEXT_TAG" name="context_tag" />
-                       <pad bytes="20" />
-               </reply>
-       </request>
-
-       <request name="CreatePbuffer" opcode="27">
-               <field type="SCREEN" name="screen" />
-               <field type="FBCONFIG" name="fbconfig" />
-               <field type="PBUFFER" name="pbuffer" />
-               <field type="CARD32" name="num_attribs" />
-               <valueparam value-mask-type="CARD32"
-                       value-mask-name="value_mask"
-                       value-list-name="value_list" />
-       </request>
-
-       <request name="DestroyPbuffer" opcode="28">
-               <field type="PBUFFER" name="pbuffer" />
-       </request>
-
-       <request name="GetDrawableAttributes" opcode="29">
-               <field type="glx:DRAWABLE" name="drawable" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="num_attribs" />
-                       <pad bytes="20" />
-                       <valueparam value-mask-type="CARD32"
-                               value-mask-name="value_mask"
-                               value-list-name="value_list" />
-               </reply>
-       </request>
-
-       <request name="ChangeDrawableAttributes" opcode="30">
-               <field type="glx:DRAWABLE" name="drawable" />
-               <field type="CARD32" name="num_attribs" />
-               <valueparam value-mask-type="CARD32"
-                       value-mask-name="value_mask"
-                       value-list-name="value_list" />
-       </request>
-
-       <request name="CreateWindow" opcode="31">
-               <field type="SCREEN" name="screen" />
-               <field type="FBCONFIG" name="fbconfig" />
-               <field type="xproto:WINDOW" name="window" />
-               <field type="glx:WINDOW" name="glx_window" />
-               <field type="CARD32" name="num_attribs" />
-               <valueparam value-mask-type="CARD32"
-                       value-mask-name="value_mask"
-                       value-list-name="value_list" />
-       </request>
-
-       <request name="DeleteWindow" opcode="32">
-               <field type="glx:WINDOW" name="glxwindow" />
-       </request>
-
-       <!-- Requests for GL Non-rendering Commands (single ops) -->
-
-       <request name="NewList" opcode="101">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="list" />
-               <field type="CARD32" name="mode" />
-       </request>
-
-       <request name="EndList" opcode="102">
-               <field type="CONTEXT_TAG" name="context_tag" />
-       </request>
-
-       <request name="DeleteLists" opcode="103">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="list" />
-               <field type="INT32" name="range" />
-       </request>
-
-       <request name="GenLists" opcode="104">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="range" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="ret_val" />
-               </reply>
-       </request>
-
-       <request name="FeedbackBuffer" opcode="105">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="size" />
-               <field type="INT32" name="type" />
-       </request>
-
-       <request name="SelectBuffer" opcode="106">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="size" />
-               <!-- the reply is actually returned in the data
-               of the next RenderMode request -->
-       </request>
-
-
-       <request name="RenderMode" opcode="107">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="mode" />
-               <!--
-               This reply is only if RM was previously feedback/selection.
-               If it was in feedback mode then data is FLOAT32.
-               If previously in render mode there is no reply.
-               -->
-               <reply>
-                       <pad bytes="1" />
-                       <field type="CARD32" name="ret_val" />
-                       <field type="CARD32" name="n" />
-                       <field type="CARD32" name="new_mode" />
-                       <pad bytes="12" />
-                       <list type="CARD32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <enum name="RM">
-               <item name="GL_RENDER"><value>0x1C00</value></item>
-               <item name="GL_FEEDBACK"><value>0x1C01</value></item>
-               <item name="GL_SELECT"><value>0x1C02</value></item>
-       </enum>
-
-       <request name="Finish" opcode="108">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <reply>
-                       <pad bytes="1" />
-               </reply>
-       </request>
-
-       <request name="PixelStoref" opcode="109">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="pname" />
-               <field type="FLOAT32" name="datum" />
-       </request>
-
-       <request name="PixelStorei" opcode="110">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="pname" />
-               <field type="INT32" name="datum" />
-       </request>
-
-       <request name="ReadPixels" opcode="111">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="x" />
-               <field type="INT32" name="y" />
-               <field type="INT32" name="width" />
-               <field type="INT32" name="height" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <field type="BOOL" name="lsb_first" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-               
-       <!-- FIXME:
-       All the Get* functions can return different stuff for replies.
-       Hopefully xcb will support multiple reply structures at some point
-       but for now... grrrr
-       Starts on page 58/180
-       -->
-       <request name="GetBooleanv" opcode="112">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="BOOL" name="datum" />
-                       <pad bytes="15" />
-                       <list type="BOOL" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetClipPlane" opcode="113">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="plane" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="FLOAT64" name="data" />
-               </reply>
-       </request>
-
-       <request name="GetDoublev" opcode="114">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT64" name="datum" />
-                       <pad bytes="8" />
-                       <list type="FLOAT64" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetError" opcode="115">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="INT32" name="error" />
-               </reply>
-       </request>
-
-       <request name="GetFloatv" opcode="116">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetIntegerv" opcode="117">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetLightfv" opcode="118">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="light" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetLightiv" opcode="119">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="light" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMapdv" opcode="120">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="query" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT64" name="datum" />
-                       <pad bytes="8" />
-                       <list type="FLOAT64" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMapfv" opcode="121">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="query" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMapiv" opcode="122">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="query" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMaterialfv" opcode="123">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="face" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMaterialiv" opcode="124">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="face" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetPixelMapfv" opcode="125">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="map" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetPixelMapuiv" opcode="126">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="map" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="CARD32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="CARD32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetPixelMapusv" opcode="127">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="map" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="CARD16" name="datum" />
-                       <pad bytes="16" />
-                       <list type="CARD16" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetPolygonStipple" opcode="128">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="BOOL" name="lsb_first" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-
-
-       <request name="GetString" opcode="129">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="name" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <pad bytes="16" />
-                       <list type="CARD8" name="string">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexEnvfv" opcode="130">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexEnviv" opcode="131">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexGendv" opcode="132">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="coord" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT64" name="datum" />
-                       <pad bytes="8" />
-                       <list type="FLOAT64" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexGenfv" opcode="133">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="coord" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexGeniv" opcode="134">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="coord" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexImage" opcode="135">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="INT32" name="level" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="width" />
-                       <field type="INT32" name="height" />
-                       <field type="INT32" name="depth" />
-                       <pad bytes="4" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-           
-
-       <request name="GetTexParameterfv" opcode="136">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexParameteriv" opcode="137">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexLevelParameterfv" opcode="138">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="INT32" name="level" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetTexLevelParameteriv" opcode="139">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="INT32" name="level" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="IsList" opcode="141" >
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="list" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="BOOL32" name="ret_val" />
-               </reply>
-       </request>
-
-       <request name="Flush" opcode="142">
-               <field type="CONTEXT_TAG" name="context_tag" />
-       </request>
-
-       <request name="AreTexturesResident" opcode="143">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="n" />
-               <list type="CARD32" name="textures">
-                   <fieldref>n</fieldref>
-               </list>
-               <reply>
-                       <pad bytes="1" />
-                       <field type="BOOL32" name="ret_val" />
-                       <pad bytes="20" />
-                       <list type="BOOL" name="data" />
-               </reply>
-       </request>
-
-       <request name="DeleteTextures" opcode="144">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="n" />
-               <list type="CARD32" name="textures">
-                       <fieldref>n</fieldref>
-               </list>
-       </request>
-
-       <request name="GenTextures" opcode="145">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="n" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="CARD32" name="data" />
-               </reply>
-       </request>
-
-       <request name="IsTexture" opcode="146">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="texture" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="BOOL32" name="ret_val" />
-               </reply>
-       </request>
-
-       <request name="GetColorTable" opcode="147">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="width" />
-                       <pad bytes="12" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-       
-       <request name="GetColorTableParameterfv" opcode="148">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetColorTableParameteriv" opcode="149">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetConvolutionFilter" opcode="150">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="width" />
-                       <field type="INT32" name="height" />
-                       <pad bytes="8" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-
-
-       <request name="GetConvolutionParameterfv" opcode="151">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetConvolutionParameteriv" opcode="152">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetSeparableFilter" opcode="153">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="row_w" />
-                       <field type="INT32" name="col_h" />
-                       <pad bytes="8" />
-                       <list type="BYTE" name="rows_and_cols" />
-               </reply>
-       </request>
-
-       <request name="GetHistogram" opcode="154">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <field type="BOOL" name="reset" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="width" />
-                       <pad bytes="12" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-
-
-       <request name="GetHistogramParameterfv" opcode="155">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetHistogramParameteriv" opcode="156">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMinmax" opcode="157">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="format" />
-               <field type="CARD32" name="type" />
-               <field type="BOOL" name="swap_bytes" />
-               <field type="BOOL" name="reset" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-
-       <request name="GetMinmaxParameterfv" opcode="158">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="FLOAT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="FLOAT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <request name="GetMinmaxParameteriv" opcode="159">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-
-       <!--
-       GLX Extensions
-       
-       * XXX: So far only define non-rendering commands.
-       * Only those extensions that affect the GLX wire protocol are listed.
-       -->
-
-       <!--
-       GL_ARB_texture_compression
-       http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_compression.txt
-       -->
-       <request name="GetCompressedTexImageARB" opcode="160">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="INT32" name="level" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="8" />
-                       <field type="INT32" name="size" />
-                       <pad bytes="12" />
-                       <list type="BYTE" name="data" />
-               </reply>
-       </request>
-
-       
-       <!--
-       GL_ARB_occlusion_query
-       http://oss.sgi.com/projects/ogl-sample/registry/ARB/occlusion_query.txt
-       -->
-
-       <request name="DeleteQueriesARB" opcode="161">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="n" />
-               <list type="CARD32" name="ids">
-                       <fieldref>n</fieldref>
-               </list>
-       </request>
-
-       <request name="GenQueriesARB" opcode="162">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="INT32" name="n" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="24" />
-                       <list type="CARD32" name="data" />
-               </reply>
-       </request>
-       
-       <request name="IsQueryARB" opcode="163">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="id" />
-               <reply>
-                       <pad bytes="1" />
-                       <field type="BOOL32" name="ret_val" />
-               </reply>
-       </request>
-       
-       <request name="GetQueryivARB" opcode="164">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="target" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-       
-       <request name="GetQueryObjectivARB" opcode="165">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="id" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="INT32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="INT32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-       
-       <request name="GetQueryObjectuivARB" opcode="166">
-               <field type="CONTEXT_TAG" name="context_tag" />
-               <field type="CARD32" name="id" />
-               <field type="CARD32" name="pname" />
-               <reply>
-                       <pad bytes="1" />
-                       <pad bytes="4" />
-                       <field type="CARD32" name="n" />
-                       <field type="CARD32" name="datum" />
-                       <pad bytes="12" />
-                       <list type="CARD32" name="data">
-                               <fieldref>n</fieldref>
-                       </list>
-               </reply>
-       </request>
-       
-       <!--
-       GL_ARB_vertex_program
-       http://oss.sgi.com/projects/ogl-sample/registry/ARB/vertex_program.txt
-       XXX: Need to write up vops
-       --> 
-
-       <!--
-       GL_ARB_fragment_program
-       http://oss.sgi.com/projects/ogl-sample/registry/ARB/fragment_program.txt
-       XXX: Need to write up vops
-       -->
-       
-       <!--
-       GL_SGIS_texture_filter4
-       http://oss.sgi.com/projects/ogl-sample/registry/SGIS/texture_filter4.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_EXT_histogram
-       http://oss.sgi.com/projects/ogl-sample/registry/EXT/histogram.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_EXT_convolution
-       http://oss.sgi.com/projects/ogl-sample/registry/EXT/convolution.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGI_color_table
-       http://oss.sgi.com/projects/ogl-sample/registry/SGI/color_table.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_EXT_texture_object
-       http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_object.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGIS_detail_texture
-       http://oss.sgi.com/projects/ogl-sample/registry/SGIS/detail_texture.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGIS_sharpen_texture
-       http://oss.sgi.com/projects/ogl-sample/registry/SGIS/sharpen_texture.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGI_make_current_read
-       http://oss.sgi.com/projects/ogl-sample/registry/SGI/make_current_read.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_EXT_import_context
-       http://oss.sgi.com/projects/ogl-sample/registry/EXT/import_context.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGIX_fbconfig
-       http://oss.sgi.com/projects/ogl-sample/registry/SGIX/fbconfig.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_SGIX_pbuffer
-       http://oss.sgi.com/projects/ogl-sample/registry/SGIX/pbuffer.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_EXT_pixel_transform
-       http://oss.sgi.com/projects/ogl-sample/registry/EXT/pixel_transform.txt
-       XXX: Need to write up vops
-       -->
-       
-       <!--
-       GL_NV_register_combiners
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/register_combiners.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_fence
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/fence.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_register_combiners2
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/register_combiners2.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_vertex_program
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/vertex_program.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_vertex_program
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/vertex_program.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_occlusion_query
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/occlusion_query.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_NV_fragment_program
-       http://oss.sgi.com/projects/ogl-sample/registry/NV/fragment_program.txt
-       XXX: Need to write up vops
-       -->
-
-       <!--
-       GL_OES_single_precision
-       http://oss.sgi.com/projects/ogl-sample/registry/OES/single_precision.txt
-       XXX: Need to write up vops
-       -->
-       
-</xcb>