panic when an extension request is issued before an extension has been initialized. but give a nice error message for the happy people.

1 files changed, 611 insertions, 11 deletions

diff --git a/nexgb/glx/glx.go b/nexgb/glx/glx.go
index 6bc3615..0f67127 100644
--- a/nexgb/glx/glx.go
+++ b/nexgb/glx/glx.go
@@ -2,7 +2,7 @@
 package glx
 
 /*
-	This file was generated by glx.xml on May 11 2012 1:58:35am EDT.
+	This file was generated by glx.xml on May 11 2012 11:57:19pm EDT.
 	This file is automatically generated. Edit at your peril!
 */
 
@@ -40,16 +40,6 @@ func init() {
 	xgb.NewExtErrorFuncs["GLX"] = make(map[int]xgb.NewErrorFun)
 }
 
-// Skipping definition for base type 'Card16'
-
-// Skipping definition for base type 'Char'
-
-// Skipping definition for base type 'Card32'
-
-// Skipping definition for base type 'Double'
-
-// Skipping definition for base type 'Bool'
-
 // Skipping definition for base type 'Float'
 
 // Skipping definition for base type 'Card8'
@@ -64,6 +54,16 @@ func init() {
 
 // Skipping definition for base type 'Int8'
 
+// Skipping definition for base type 'Card16'
+
+// Skipping definition for base type 'Char'
+
+// Skipping definition for base type 'Card32'
+
+// Skipping definition for base type 'Double'
+
+// Skipping definition for base type 'Bool'
+
 const (
 	PbcetDamaged = 32791
 	PbcetSaved   = 32792
@@ -916,6 +916,9 @@ type RenderCookie struct {
 // Render sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Render(c *xgb.Conn, ContextTag ContextTag, Data []byte) RenderCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Render' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(renderRequest(c, ContextTag, Data), cookie)
 	return RenderCookie{cookie}
@@ -924,6 +927,9 @@ func Render(c *xgb.Conn, ContextTag ContextTag, Data []byte) RenderCookie {
 // RenderChecked sends a checked request.
 // If an error occurs, it can be retrieved using RenderCookie.Check()
 func RenderChecked(c *xgb.Conn, ContextTag ContextTag, Data []byte) RenderCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Render' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(renderRequest(c, ContextTag, Data), cookie)
 	return RenderCookie{cookie}
@@ -968,6 +974,9 @@ type RenderLargeCookie struct {
 // RenderLarge sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func RenderLarge(c *xgb.Conn, ContextTag ContextTag, RequestNum uint16, RequestTotal uint16, DataLen uint32, Data []byte) RenderLargeCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'RenderLarge' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(renderLargeRequest(c, ContextTag, RequestNum, RequestTotal, DataLen, Data), cookie)
 	return RenderLargeCookie{cookie}
@@ -976,6 +985,9 @@ func RenderLarge(c *xgb.Conn, ContextTag ContextTag, RequestNum uint16, RequestT
 // RenderLargeChecked sends a checked request.
 // If an error occurs, it can be retrieved using RenderLargeCookie.Check()
 func RenderLargeChecked(c *xgb.Conn, ContextTag ContextTag, RequestNum uint16, RequestTotal uint16, DataLen uint32, Data []byte) RenderLargeCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'RenderLarge' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(renderLargeRequest(c, ContextTag, RequestNum, RequestTotal, DataLen, Data), cookie)
 	return RenderLargeCookie{cookie}
@@ -1029,6 +1041,9 @@ type CreateContextCookie struct {
 // CreateContext sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateContext(c *xgb.Conn, Context Context, Visual xproto.Visualid, Screen uint32, ShareList Context, IsDirect bool) CreateContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createContextRequest(c, Context, Visual, Screen, ShareList, IsDirect), cookie)
 	return CreateContextCookie{cookie}
@@ -1037,6 +1052,9 @@ func CreateContext(c *xgb.Conn, Context Context, Visual xproto.Visualid, Screen
 // CreateContextChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateContextCookie.Check()
 func CreateContextChecked(c *xgb.Conn, Context Context, Visual xproto.Visualid, Screen uint32, ShareList Context, IsDirect bool) CreateContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createContextRequest(c, Context, Visual, Screen, ShareList, IsDirect), cookie)
 	return CreateContextCookie{cookie}
@@ -1096,6 +1114,9 @@ type DestroyContextCookie struct {
 // DestroyContext sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroyContext(c *xgb.Conn, Context Context) DestroyContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyContextRequest(c, Context), cookie)
 	return DestroyContextCookie{cookie}
@@ -1104,6 +1125,9 @@ func DestroyContext(c *xgb.Conn, Context Context) DestroyContextCookie {
 // DestroyContextChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyContextCookie.Check()
 func DestroyContextChecked(c *xgb.Conn, Context Context) DestroyContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyContextRequest(c, Context), cookie)
 	return DestroyContextCookie{cookie}
@@ -1145,6 +1169,9 @@ type MakeCurrentCookie struct {
 // MakeCurrent sends a checked request.
 // If an error occurs, it will be returned with the reply by calling MakeCurrentCookie.Reply()
 func MakeCurrent(c *xgb.Conn, Drawable Drawable, Context Context, OldContextTag ContextTag) MakeCurrentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'MakeCurrent' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(makeCurrentRequest(c, Drawable, Context, OldContextTag), cookie)
 	return MakeCurrentCookie{cookie}
@@ -1153,6 +1180,9 @@ func MakeCurrent(c *xgb.Conn, Drawable Drawable, Context Context, OldContextTag
 // MakeCurrentUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func MakeCurrentUnchecked(c *xgb.Conn, Drawable Drawable, Context Context, OldContextTag ContextTag) MakeCurrentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'MakeCurrent' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(makeCurrentRequest(c, Drawable, Context, OldContextTag), cookie)
 	return MakeCurrentCookie{cookie}
@@ -1236,6 +1266,9 @@ type IsDirectCookie struct {
 // IsDirect sends a checked request.
 // If an error occurs, it will be returned with the reply by calling IsDirectCookie.Reply()
 func IsDirect(c *xgb.Conn, Context Context) IsDirectCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsDirect' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(isDirectRequest(c, Context), cookie)
 	return IsDirectCookie{cookie}
@@ -1244,6 +1277,9 @@ func IsDirect(c *xgb.Conn, Context Context) IsDirectCookie {
 // IsDirectUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func IsDirectUnchecked(c *xgb.Conn, Context Context) IsDirectCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsDirect' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(isDirectRequest(c, Context), cookie)
 	return IsDirectCookie{cookie}
@@ -1325,6 +1361,9 @@ type QueryVersionCookie struct {
 // QueryVersion sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply()
 func QueryVersion(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32) QueryVersionCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryVersionRequest(c, MajorVersion, MinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -1333,6 +1372,9 @@ func QueryVersion(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32) QueryVe
 // QueryVersionUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryVersionUnchecked(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32) QueryVersionCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryVersionRequest(c, MajorVersion, MinorVersion), cookie)
 	return QueryVersionCookie{cookie}
@@ -1417,6 +1459,9 @@ type WaitGLCookie struct {
 // WaitGL sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func WaitGL(c *xgb.Conn, ContextTag ContextTag) WaitGLCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'WaitGL' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(waitGLRequest(c, ContextTag), cookie)
 	return WaitGLCookie{cookie}
@@ -1425,6 +1470,9 @@ func WaitGL(c *xgb.Conn, ContextTag ContextTag) WaitGLCookie {
 // WaitGLChecked sends a checked request.
 // If an error occurs, it can be retrieved using WaitGLCookie.Check()
 func WaitGLChecked(c *xgb.Conn, ContextTag ContextTag) WaitGLCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'WaitGL' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(waitGLRequest(c, ContextTag), cookie)
 	return WaitGLCookie{cookie}
@@ -1466,6 +1514,9 @@ type WaitXCookie struct {
 // WaitX sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func WaitX(c *xgb.Conn, ContextTag ContextTag) WaitXCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'WaitX' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(waitXRequest(c, ContextTag), cookie)
 	return WaitXCookie{cookie}
@@ -1474,6 +1525,9 @@ func WaitX(c *xgb.Conn, ContextTag ContextTag) WaitXCookie {
 // WaitXChecked sends a checked request.
 // If an error occurs, it can be retrieved using WaitXCookie.Check()
 func WaitXChecked(c *xgb.Conn, ContextTag ContextTag) WaitXCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'WaitX' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(waitXRequest(c, ContextTag), cookie)
 	return WaitXCookie{cookie}
@@ -1515,6 +1569,9 @@ type CopyContextCookie struct {
 // CopyContext sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CopyContext(c *xgb.Conn, Src Context, Dest Context, Mask uint32, SrcContextTag ContextTag) CopyContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CopyContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(copyContextRequest(c, Src, Dest, Mask, SrcContextTag), cookie)
 	return CopyContextCookie{cookie}
@@ -1523,6 +1580,9 @@ func CopyContext(c *xgb.Conn, Src Context, Dest Context, Mask uint32, SrcContext
 // CopyContextChecked sends a checked request.
 // If an error occurs, it can be retrieved using CopyContextCookie.Check()
 func CopyContextChecked(c *xgb.Conn, Src Context, Dest Context, Mask uint32, SrcContextTag ContextTag) CopyContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CopyContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(copyContextRequest(c, Src, Dest, Mask, SrcContextTag), cookie)
 	return CopyContextCookie{cookie}
@@ -1573,6 +1633,9 @@ type SwapBuffersCookie struct {
 // SwapBuffers sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SwapBuffers(c *xgb.Conn, ContextTag ContextTag, Drawable Drawable) SwapBuffersCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SwapBuffers' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(swapBuffersRequest(c, ContextTag, Drawable), cookie)
 	return SwapBuffersCookie{cookie}
@@ -1581,6 +1644,9 @@ func SwapBuffers(c *xgb.Conn, ContextTag ContextTag, Drawable Drawable) SwapBuff
 // SwapBuffersChecked sends a checked request.
 // If an error occurs, it can be retrieved using SwapBuffersCookie.Check()
 func SwapBuffersChecked(c *xgb.Conn, ContextTag ContextTag, Drawable Drawable) SwapBuffersCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SwapBuffers' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(swapBuffersRequest(c, ContextTag, Drawable), cookie)
 	return SwapBuffersCookie{cookie}
@@ -1625,6 +1691,9 @@ type UseXFontCookie struct {
 // UseXFont sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func UseXFont(c *xgb.Conn, ContextTag ContextTag, Font xproto.Font, First uint32, Count uint32, ListBase uint32) UseXFontCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'UseXFont' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(useXFontRequest(c, ContextTag, Font, First, Count, ListBase), cookie)
 	return UseXFontCookie{cookie}
@@ -1633,6 +1702,9 @@ func UseXFont(c *xgb.Conn, ContextTag ContextTag, Font xproto.Font, First uint32
 // UseXFontChecked sends a checked request.
 // If an error occurs, it can be retrieved using UseXFontCookie.Check()
 func UseXFontChecked(c *xgb.Conn, ContextTag ContextTag, Font xproto.Font, First uint32, Count uint32, ListBase uint32) UseXFontCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'UseXFont' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(useXFontRequest(c, ContextTag, Font, First, Count, ListBase), cookie)
 	return UseXFontCookie{cookie}
@@ -1686,6 +1758,9 @@ type CreateGLXPixmapCookie struct {
 // CreateGLXPixmap sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateGLXPixmap(c *xgb.Conn, Screen uint32, Visual xproto.Visualid, Pixmap xproto.Pixmap, GlxPixmap Pixmap) CreateGLXPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateGLXPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createGLXPixmapRequest(c, Screen, Visual, Pixmap, GlxPixmap), cookie)
 	return CreateGLXPixmapCookie{cookie}
@@ -1694,6 +1769,9 @@ func CreateGLXPixmap(c *xgb.Conn, Screen uint32, Visual xproto.Visualid, Pixmap
 // CreateGLXPixmapChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateGLXPixmapCookie.Check()
 func CreateGLXPixmapChecked(c *xgb.Conn, Screen uint32, Visual xproto.Visualid, Pixmap xproto.Pixmap, GlxPixmap Pixmap) CreateGLXPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateGLXPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createGLXPixmapRequest(c, Screen, Visual, Pixmap, GlxPixmap), cookie)
 	return CreateGLXPixmapCookie{cookie}
@@ -1744,6 +1822,9 @@ type GetVisualConfigsCookie struct {
 // GetVisualConfigs sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetVisualConfigsCookie.Reply()
 func GetVisualConfigs(c *xgb.Conn, Screen uint32) GetVisualConfigsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetVisualConfigs' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getVisualConfigsRequest(c, Screen), cookie)
 	return GetVisualConfigsCookie{cookie}
@@ -1752,6 +1833,9 @@ func GetVisualConfigs(c *xgb.Conn, Screen uint32) GetVisualConfigsCookie {
 // GetVisualConfigsUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetVisualConfigsUnchecked(c *xgb.Conn, Screen uint32) GetVisualConfigsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetVisualConfigs' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getVisualConfigsRequest(c, Screen), cookie)
 	return GetVisualConfigsCookie{cookie}
@@ -1841,6 +1925,9 @@ type DestroyGLXPixmapCookie struct {
 // DestroyGLXPixmap sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroyGLXPixmap(c *xgb.Conn, GlxPixmap Pixmap) DestroyGLXPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyGLXPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyGLXPixmapRequest(c, GlxPixmap), cookie)
 	return DestroyGLXPixmapCookie{cookie}
@@ -1849,6 +1936,9 @@ func DestroyGLXPixmap(c *xgb.Conn, GlxPixmap Pixmap) DestroyGLXPixmapCookie {
 // DestroyGLXPixmapChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyGLXPixmapCookie.Check()
 func DestroyGLXPixmapChecked(c *xgb.Conn, GlxPixmap Pixmap) DestroyGLXPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyGLXPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyGLXPixmapRequest(c, GlxPixmap), cookie)
 	return DestroyGLXPixmapCookie{cookie}
@@ -1890,6 +1980,9 @@ type VendorPrivateCookie struct {
 // VendorPrivate sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func VendorPrivate(c *xgb.Conn, VendorCode uint32, ContextTag ContextTag, Data []byte) VendorPrivateCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'VendorPrivate' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(vendorPrivateRequest(c, VendorCode, ContextTag, Data), cookie)
 	return VendorPrivateCookie{cookie}
@@ -1898,6 +1991,9 @@ func VendorPrivate(c *xgb.Conn, VendorCode uint32, ContextTag ContextTag, Data [
 // VendorPrivateChecked sends a checked request.
 // If an error occurs, it can be retrieved using VendorPrivateCookie.Check()
 func VendorPrivateChecked(c *xgb.Conn, VendorCode uint32, ContextTag ContextTag, Data []byte) VendorPrivateCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'VendorPrivate' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(vendorPrivateRequest(c, VendorCode, ContextTag, Data), cookie)
 	return VendorPrivateCookie{cookie}
@@ -1945,6 +2041,9 @@ type VendorPrivateWithReplyCookie struct {
 // VendorPrivateWithReply sends a checked request.
 // If an error occurs, it will be returned with the reply by calling VendorPrivateWithReplyCookie.Reply()
 func VendorPrivateWithReply(c *xgb.Conn, VendorCode uint32, ContextTag ContextTag, Data []byte) VendorPrivateWithReplyCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'VendorPrivateWithReply' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(vendorPrivateWithReplyRequest(c, VendorCode, ContextTag, Data), cookie)
 	return VendorPrivateWithReplyCookie{cookie}
@@ -1953,6 +2052,9 @@ func VendorPrivateWithReply(c *xgb.Conn, VendorCode uint32, ContextTag ContextTa
 // VendorPrivateWithReplyUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func VendorPrivateWithReplyUnchecked(c *xgb.Conn, VendorCode uint32, ContextTag ContextTag, Data []byte) VendorPrivateWithReplyCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'VendorPrivateWithReply' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(vendorPrivateWithReplyRequest(c, VendorCode, ContextTag, Data), cookie)
 	return VendorPrivateWithReplyCookie{cookie}
@@ -2043,6 +2145,9 @@ type QueryExtensionsStringCookie struct {
 // QueryExtensionsString sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryExtensionsStringCookie.Reply()
 func QueryExtensionsString(c *xgb.Conn, Screen uint32) QueryExtensionsStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryExtensionsString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryExtensionsStringRequest(c, Screen), cookie)
 	return QueryExtensionsStringCookie{cookie}
@@ -2051,6 +2156,9 @@ func QueryExtensionsString(c *xgb.Conn, Screen uint32) QueryExtensionsStringCook
 // QueryExtensionsStringUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryExtensionsStringUnchecked(c *xgb.Conn, Screen uint32) QueryExtensionsStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryExtensionsString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryExtensionsStringRequest(c, Screen), cookie)
 	return QueryExtensionsStringCookie{cookie}
@@ -2131,6 +2239,9 @@ type QueryServerStringCookie struct {
 // QueryServerString sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryServerStringCookie.Reply()
 func QueryServerString(c *xgb.Conn, Screen uint32, Name uint32) QueryServerStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryServerString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryServerStringRequest(c, Screen, Name), cookie)
 	return QueryServerStringCookie{cookie}
@@ -2139,6 +2250,9 @@ func QueryServerString(c *xgb.Conn, Screen uint32, Name uint32) QueryServerStrin
 // QueryServerStringUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryServerStringUnchecked(c *xgb.Conn, Screen uint32, Name uint32) QueryServerStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryServerString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryServerStringRequest(c, Screen, Name), cookie)
 	return QueryServerStringCookie{cookie}
@@ -2230,6 +2344,9 @@ type ClientInfoCookie struct {
 // ClientInfo sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func ClientInfo(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, StrLen uint32, String string) ClientInfoCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ClientInfo' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(clientInfoRequest(c, MajorVersion, MinorVersion, StrLen, String), cookie)
 	return ClientInfoCookie{cookie}
@@ -2238,6 +2355,9 @@ func ClientInfo(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, StrLen ui
 // ClientInfoChecked sends a checked request.
 // If an error occurs, it can be retrieved using ClientInfoCookie.Check()
 func ClientInfoChecked(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, StrLen uint32, String string) ClientInfoCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ClientInfo' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(clientInfoRequest(c, MajorVersion, MinorVersion, StrLen, String), cookie)
 	return ClientInfoCookie{cookie}
@@ -2288,6 +2408,9 @@ type GetFBConfigsCookie struct {
 // GetFBConfigs sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetFBConfigsCookie.Reply()
 func GetFBConfigs(c *xgb.Conn, Screen uint32) GetFBConfigsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetFBConfigs' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getFBConfigsRequest(c, Screen), cookie)
 	return GetFBConfigsCookie{cookie}
@@ -2296,6 +2419,9 @@ func GetFBConfigs(c *xgb.Conn, Screen uint32) GetFBConfigsCookie {
 // GetFBConfigsUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetFBConfigsUnchecked(c *xgb.Conn, Screen uint32) GetFBConfigsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetFBConfigs' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getFBConfigsRequest(c, Screen), cookie)
 	return GetFBConfigsCookie{cookie}
@@ -2385,6 +2511,9 @@ type CreatePixmapCookie struct {
 // CreatePixmap sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreatePixmap(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pixmap xproto.Pixmap, GlxPixmap Pixmap, NumAttribs uint32, Attribs []uint32) CreatePixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreatePixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createPixmapRequest(c, Screen, Fbconfig, Pixmap, GlxPixmap, NumAttribs, Attribs), cookie)
 	return CreatePixmapCookie{cookie}
@@ -2393,6 +2522,9 @@ func CreatePixmap(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pixmap xproto.P
 // CreatePixmapChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreatePixmapCookie.Check()
 func CreatePixmapChecked(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pixmap xproto.Pixmap, GlxPixmap Pixmap, NumAttribs uint32, Attribs []uint32) CreatePixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreatePixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createPixmapRequest(c, Screen, Fbconfig, Pixmap, GlxPixmap, NumAttribs, Attribs), cookie)
 	return CreatePixmapCookie{cookie}
@@ -2452,6 +2584,9 @@ type DestroyPixmapCookie struct {
 // DestroyPixmap sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroyPixmap(c *xgb.Conn, GlxPixmap Pixmap) DestroyPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyPixmapRequest(c, GlxPixmap), cookie)
 	return DestroyPixmapCookie{cookie}
@@ -2460,6 +2595,9 @@ func DestroyPixmap(c *xgb.Conn, GlxPixmap Pixmap) DestroyPixmapCookie {
 // DestroyPixmapChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyPixmapCookie.Check()
 func DestroyPixmapChecked(c *xgb.Conn, GlxPixmap Pixmap) DestroyPixmapCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyPixmap' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyPixmapRequest(c, GlxPixmap), cookie)
 	return DestroyPixmapCookie{cookie}
@@ -2501,6 +2639,9 @@ type CreateNewContextCookie struct {
 // CreateNewContext sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateNewContext(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Screen uint32, RenderType uint32, ShareList Context, IsDirect bool) CreateNewContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateNewContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createNewContextRequest(c, Context, Fbconfig, Screen, RenderType, ShareList, IsDirect), cookie)
 	return CreateNewContextCookie{cookie}
@@ -2509,6 +2650,9 @@ func CreateNewContext(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Screen ui
 // CreateNewContextChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateNewContextCookie.Check()
 func CreateNewContextChecked(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Screen uint32, RenderType uint32, ShareList Context, IsDirect bool) CreateNewContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateNewContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createNewContextRequest(c, Context, Fbconfig, Screen, RenderType, ShareList, IsDirect), cookie)
 	return CreateNewContextCookie{cookie}
@@ -2571,6 +2715,9 @@ type QueryContextCookie struct {
 // QueryContext sends a checked request.
 // If an error occurs, it will be returned with the reply by calling QueryContextCookie.Reply()
 func QueryContext(c *xgb.Conn, Context Context) QueryContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(queryContextRequest(c, Context), cookie)
 	return QueryContextCookie{cookie}
@@ -2579,6 +2726,9 @@ func QueryContext(c *xgb.Conn, Context Context) QueryContextCookie {
 // QueryContextUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func QueryContextUnchecked(c *xgb.Conn, Context Context) QueryContextCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'QueryContext' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(queryContextRequest(c, Context), cookie)
 	return QueryContextCookie{cookie}
@@ -2664,6 +2814,9 @@ type MakeContextCurrentCookie struct {
 // MakeContextCurrent sends a checked request.
 // If an error occurs, it will be returned with the reply by calling MakeContextCurrentCookie.Reply()
 func MakeContextCurrent(c *xgb.Conn, OldContextTag ContextTag, Drawable Drawable, ReadDrawable Drawable, Context Context) MakeContextCurrentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'MakeContextCurrent' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(makeContextCurrentRequest(c, OldContextTag, Drawable, ReadDrawable, Context), cookie)
 	return MakeContextCurrentCookie{cookie}
@@ -2672,6 +2825,9 @@ func MakeContextCurrent(c *xgb.Conn, OldContextTag ContextTag, Drawable Drawable
 // MakeContextCurrentUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func MakeContextCurrentUnchecked(c *xgb.Conn, OldContextTag ContextTag, Drawable Drawable, ReadDrawable Drawable, Context Context) MakeContextCurrentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'MakeContextCurrent' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(makeContextCurrentRequest(c, OldContextTag, Drawable, ReadDrawable, Context), cookie)
 	return MakeContextCurrentCookie{cookie}
@@ -2758,6 +2914,9 @@ type CreatePbufferCookie struct {
 // CreatePbuffer sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreatePbuffer(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pbuffer Pbuffer, NumAttribs uint32, Attribs []uint32) CreatePbufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreatePbuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createPbufferRequest(c, Screen, Fbconfig, Pbuffer, NumAttribs, Attribs), cookie)
 	return CreatePbufferCookie{cookie}
@@ -2766,6 +2925,9 @@ func CreatePbuffer(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pbuffer Pbuffe
 // CreatePbufferChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreatePbufferCookie.Check()
 func CreatePbufferChecked(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Pbuffer Pbuffer, NumAttribs uint32, Attribs []uint32) CreatePbufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreatePbuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createPbufferRequest(c, Screen, Fbconfig, Pbuffer, NumAttribs, Attribs), cookie)
 	return CreatePbufferCookie{cookie}
@@ -2822,6 +2984,9 @@ type DestroyPbufferCookie struct {
 // DestroyPbuffer sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DestroyPbuffer(c *xgb.Conn, Pbuffer Pbuffer) DestroyPbufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyPbuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(destroyPbufferRequest(c, Pbuffer), cookie)
 	return DestroyPbufferCookie{cookie}
@@ -2830,6 +2995,9 @@ func DestroyPbuffer(c *xgb.Conn, Pbuffer Pbuffer) DestroyPbufferCookie {
 // DestroyPbufferChecked sends a checked request.
 // If an error occurs, it can be retrieved using DestroyPbufferCookie.Check()
 func DestroyPbufferChecked(c *xgb.Conn, Pbuffer Pbuffer) DestroyPbufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DestroyPbuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(destroyPbufferRequest(c, Pbuffer), cookie)
 	return DestroyPbufferCookie{cookie}
@@ -2871,6 +3039,9 @@ type GetDrawableAttributesCookie struct {
 // GetDrawableAttributes sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetDrawableAttributesCookie.Reply()
 func GetDrawableAttributes(c *xgb.Conn, Drawable Drawable) GetDrawableAttributesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetDrawableAttributes' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getDrawableAttributesRequest(c, Drawable), cookie)
 	return GetDrawableAttributesCookie{cookie}
@@ -2879,6 +3050,9 @@ func GetDrawableAttributes(c *xgb.Conn, Drawable Drawable) GetDrawableAttributes
 // GetDrawableAttributesUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetDrawableAttributesUnchecked(c *xgb.Conn, Drawable Drawable) GetDrawableAttributesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetDrawableAttributes' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getDrawableAttributesRequest(c, Drawable), cookie)
 	return GetDrawableAttributesCookie{cookie}
@@ -2964,6 +3138,9 @@ type ChangeDrawableAttributesCookie struct {
 // ChangeDrawableAttributes sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func ChangeDrawableAttributes(c *xgb.Conn, Drawable Drawable, NumAttribs uint32, Attribs []uint32) ChangeDrawableAttributesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ChangeDrawableAttributes' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(changeDrawableAttributesRequest(c, Drawable, NumAttribs, Attribs), cookie)
 	return ChangeDrawableAttributesCookie{cookie}
@@ -2972,6 +3149,9 @@ func ChangeDrawableAttributes(c *xgb.Conn, Drawable Drawable, NumAttribs uint32,
 // ChangeDrawableAttributesChecked sends a checked request.
 // If an error occurs, it can be retrieved using ChangeDrawableAttributesCookie.Check()
 func ChangeDrawableAttributesChecked(c *xgb.Conn, Drawable Drawable, NumAttribs uint32, Attribs []uint32) ChangeDrawableAttributesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ChangeDrawableAttributes' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(changeDrawableAttributesRequest(c, Drawable, NumAttribs, Attribs), cookie)
 	return ChangeDrawableAttributesCookie{cookie}
@@ -3022,6 +3202,9 @@ type CreateWindowCookie struct {
 // CreateWindow sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateWindow(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Window xproto.Window, GlxWindow Window, NumAttribs uint32, Attribs []uint32) CreateWindowCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateWindow' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createWindowRequest(c, Screen, Fbconfig, Window, GlxWindow, NumAttribs, Attribs), cookie)
 	return CreateWindowCookie{cookie}
@@ -3030,6 +3213,9 @@ func CreateWindow(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Window xproto.W
 // CreateWindowChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateWindowCookie.Check()
 func CreateWindowChecked(c *xgb.Conn, Screen uint32, Fbconfig Fbconfig, Window xproto.Window, GlxWindow Window, NumAttribs uint32, Attribs []uint32) CreateWindowCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateWindow' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createWindowRequest(c, Screen, Fbconfig, Window, GlxWindow, NumAttribs, Attribs), cookie)
 	return CreateWindowCookie{cookie}
@@ -3089,6 +3275,9 @@ type DeleteWindowCookie struct {
 // DeleteWindow sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DeleteWindow(c *xgb.Conn, Glxwindow Window) DeleteWindowCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteWindow' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(deleteWindowRequest(c, Glxwindow), cookie)
 	return DeleteWindowCookie{cookie}
@@ -3097,6 +3286,9 @@ func DeleteWindow(c *xgb.Conn, Glxwindow Window) DeleteWindowCookie {
 // DeleteWindowChecked sends a checked request.
 // If an error occurs, it can be retrieved using DeleteWindowCookie.Check()
 func DeleteWindowChecked(c *xgb.Conn, Glxwindow Window) DeleteWindowCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteWindow' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(deleteWindowRequest(c, Glxwindow), cookie)
 	return DeleteWindowCookie{cookie}
@@ -3138,6 +3330,9 @@ type SetClientInfoARBCookie struct {
 // SetClientInfoARB sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SetClientInfoARB(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, NumVersions uint32, GlStrLen uint32, GlxStrLen uint32, GlVersions []uint32, GlExtensionString string, GlxExtensionString string) SetClientInfoARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SetClientInfoARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(setClientInfoARBRequest(c, MajorVersion, MinorVersion, NumVersions, GlStrLen, GlxStrLen, GlVersions, GlExtensionString, GlxExtensionString), cookie)
 	return SetClientInfoARBCookie{cookie}
@@ -3146,6 +3341,9 @@ func SetClientInfoARB(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, Num
 // SetClientInfoARBChecked sends a checked request.
 // If an error occurs, it can be retrieved using SetClientInfoARBCookie.Check()
 func SetClientInfoARBChecked(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, NumVersions uint32, GlStrLen uint32, GlxStrLen uint32, GlVersions []uint32, GlExtensionString string, GlxExtensionString string) SetClientInfoARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SetClientInfoARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(setClientInfoARBRequest(c, MajorVersion, MinorVersion, NumVersions, GlStrLen, GlxStrLen, GlVersions, GlExtensionString, GlxExtensionString), cookie)
 	return SetClientInfoARBCookie{cookie}
@@ -3211,6 +3409,9 @@ type CreateContextAttribsARBCookie struct {
 // CreateContextAttribsARB sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func CreateContextAttribsARB(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Screen uint32, ShareList Context, IsDirect bool, NumAttribs uint32, Attribs []uint32) CreateContextAttribsARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateContextAttribsARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(createContextAttribsARBRequest(c, Context, Fbconfig, Screen, ShareList, IsDirect, NumAttribs, Attribs), cookie)
 	return CreateContextAttribsARBCookie{cookie}
@@ -3219,6 +3420,9 @@ func CreateContextAttribsARB(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Sc
 // CreateContextAttribsARBChecked sends a checked request.
 // If an error occurs, it can be retrieved using CreateContextAttribsARBCookie.Check()
 func CreateContextAttribsARBChecked(c *xgb.Conn, Context Context, Fbconfig Fbconfig, Screen uint32, ShareList Context, IsDirect bool, NumAttribs uint32, Attribs []uint32) CreateContextAttribsARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'CreateContextAttribsARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(createContextAttribsARBRequest(c, Context, Fbconfig, Screen, ShareList, IsDirect, NumAttribs, Attribs), cookie)
 	return CreateContextAttribsARBCookie{cookie}
@@ -3287,6 +3491,9 @@ type SetClientInfo2ARBCookie struct {
 // SetClientInfo2ARB sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SetClientInfo2ARB(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, NumVersions uint32, GlStrLen uint32, GlxStrLen uint32, GlVersions []uint32, GlExtensionString string, GlxExtensionString string) SetClientInfo2ARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SetClientInfo2ARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(setClientInfo2ARBRequest(c, MajorVersion, MinorVersion, NumVersions, GlStrLen, GlxStrLen, GlVersions, GlExtensionString, GlxExtensionString), cookie)
 	return SetClientInfo2ARBCookie{cookie}
@@ -3295,6 +3502,9 @@ func SetClientInfo2ARB(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, Nu
 // SetClientInfo2ARBChecked sends a checked request.
 // If an error occurs, it can be retrieved using SetClientInfo2ARBCookie.Check()
 func SetClientInfo2ARBChecked(c *xgb.Conn, MajorVersion uint32, MinorVersion uint32, NumVersions uint32, GlStrLen uint32, GlxStrLen uint32, GlVersions []uint32, GlExtensionString string, GlxExtensionString string) SetClientInfo2ARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SetClientInfo2ARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(setClientInfo2ARBRequest(c, MajorVersion, MinorVersion, NumVersions, GlStrLen, GlxStrLen, GlVersions, GlExtensionString, GlxExtensionString), cookie)
 	return SetClientInfo2ARBCookie{cookie}
@@ -3360,6 +3570,9 @@ type NewListCookie struct {
 // NewList sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func NewList(c *xgb.Conn, ContextTag ContextTag, List uint32, Mode uint32) NewListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'NewList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(newListRequest(c, ContextTag, List, Mode), cookie)
 	return NewListCookie{cookie}
@@ -3368,6 +3581,9 @@ func NewList(c *xgb.Conn, ContextTag ContextTag, List uint32, Mode uint32) NewLi
 // NewListChecked sends a checked request.
 // If an error occurs, it can be retrieved using NewListCookie.Check()
 func NewListChecked(c *xgb.Conn, ContextTag ContextTag, List uint32, Mode uint32) NewListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'NewList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(newListRequest(c, ContextTag, List, Mode), cookie)
 	return NewListCookie{cookie}
@@ -3415,6 +3631,9 @@ type EndListCookie struct {
 // EndList sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func EndList(c *xgb.Conn, ContextTag ContextTag) EndListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'EndList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(endListRequest(c, ContextTag), cookie)
 	return EndListCookie{cookie}
@@ -3423,6 +3642,9 @@ func EndList(c *xgb.Conn, ContextTag ContextTag) EndListCookie {
 // EndListChecked sends a checked request.
 // If an error occurs, it can be retrieved using EndListCookie.Check()
 func EndListChecked(c *xgb.Conn, ContextTag ContextTag) EndListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'EndList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(endListRequest(c, ContextTag), cookie)
 	return EndListCookie{cookie}
@@ -3464,6 +3686,9 @@ type DeleteListsCookie struct {
 // DeleteLists sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DeleteLists(c *xgb.Conn, ContextTag ContextTag, List uint32, Range int32) DeleteListsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteLists' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(deleteListsRequest(c, ContextTag, List, Range), cookie)
 	return DeleteListsCookie{cookie}
@@ -3472,6 +3697,9 @@ func DeleteLists(c *xgb.Conn, ContextTag ContextTag, List uint32, Range int32) D
 // DeleteListsChecked sends a checked request.
 // If an error occurs, it can be retrieved using DeleteListsCookie.Check()
 func DeleteListsChecked(c *xgb.Conn, ContextTag ContextTag, List uint32, Range int32) DeleteListsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteLists' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(deleteListsRequest(c, ContextTag, List, Range), cookie)
 	return DeleteListsCookie{cookie}
@@ -3519,6 +3747,9 @@ type GenListsCookie struct {
 // GenLists sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GenListsCookie.Reply()
 func GenLists(c *xgb.Conn, ContextTag ContextTag, Range int32) GenListsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenLists' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(genListsRequest(c, ContextTag, Range), cookie)
 	return GenListsCookie{cookie}
@@ -3527,6 +3758,9 @@ func GenLists(c *xgb.Conn, ContextTag ContextTag, Range int32) GenListsCookie {
 // GenListsUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GenListsUnchecked(c *xgb.Conn, ContextTag ContextTag, Range int32) GenListsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenLists' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(genListsRequest(c, ContextTag, Range), cookie)
 	return GenListsCookie{cookie}
@@ -3604,6 +3838,9 @@ type FeedbackBufferCookie struct {
 // FeedbackBuffer sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func FeedbackBuffer(c *xgb.Conn, ContextTag ContextTag, Size int32, Type int32) FeedbackBufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'FeedbackBuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(feedbackBufferRequest(c, ContextTag, Size, Type), cookie)
 	return FeedbackBufferCookie{cookie}
@@ -3612,6 +3849,9 @@ func FeedbackBuffer(c *xgb.Conn, ContextTag ContextTag, Size int32, Type int32)
 // FeedbackBufferChecked sends a checked request.
 // If an error occurs, it can be retrieved using FeedbackBufferCookie.Check()
 func FeedbackBufferChecked(c *xgb.Conn, ContextTag ContextTag, Size int32, Type int32) FeedbackBufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'FeedbackBuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(feedbackBufferRequest(c, ContextTag, Size, Type), cookie)
 	return FeedbackBufferCookie{cookie}
@@ -3659,6 +3899,9 @@ type SelectBufferCookie struct {
 // SelectBuffer sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func SelectBuffer(c *xgb.Conn, ContextTag ContextTag, Size int32) SelectBufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SelectBuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(selectBufferRequest(c, ContextTag, Size), cookie)
 	return SelectBufferCookie{cookie}
@@ -3667,6 +3910,9 @@ func SelectBuffer(c *xgb.Conn, ContextTag ContextTag, Size int32) SelectBufferCo
 // SelectBufferChecked sends a checked request.
 // If an error occurs, it can be retrieved using SelectBufferCookie.Check()
 func SelectBufferChecked(c *xgb.Conn, ContextTag ContextTag, Size int32) SelectBufferCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'SelectBuffer' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(selectBufferRequest(c, ContextTag, Size), cookie)
 	return SelectBufferCookie{cookie}
@@ -3711,6 +3957,9 @@ type RenderModeCookie struct {
 // RenderMode sends a checked request.
 // If an error occurs, it will be returned with the reply by calling RenderModeCookie.Reply()
 func RenderMode(c *xgb.Conn, ContextTag ContextTag, Mode uint32) RenderModeCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'RenderMode' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(renderModeRequest(c, ContextTag, Mode), cookie)
 	return RenderModeCookie{cookie}
@@ -3719,6 +3968,9 @@ func RenderMode(c *xgb.Conn, ContextTag ContextTag, Mode uint32) RenderModeCooki
 // RenderModeUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func RenderModeUnchecked(c *xgb.Conn, ContextTag ContextTag, Mode uint32) RenderModeCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'RenderMode' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(renderModeRequest(c, ContextTag, Mode), cookie)
 	return RenderModeCookie{cookie}
@@ -3815,6 +4067,9 @@ type FinishCookie struct {
 // Finish sends a checked request.
 // If an error occurs, it will be returned with the reply by calling FinishCookie.Reply()
 func Finish(c *xgb.Conn, ContextTag ContextTag) FinishCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Finish' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(finishRequest(c, ContextTag), cookie)
 	return FinishCookie{cookie}
@@ -3823,6 +4078,9 @@ func Finish(c *xgb.Conn, ContextTag ContextTag) FinishCookie {
 // FinishUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func FinishUnchecked(c *xgb.Conn, ContextTag ContextTag) FinishCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Finish' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(finishRequest(c, ContextTag), cookie)
 	return FinishCookie{cookie}
@@ -3893,6 +4151,9 @@ type PixelStorefCookie struct {
 // PixelStoref sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func PixelStoref(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum Float32) PixelStorefCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'PixelStoref' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(pixelStorefRequest(c, ContextTag, Pname, Datum), cookie)
 	return PixelStorefCookie{cookie}
@@ -3901,6 +4162,9 @@ func PixelStoref(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum Float32
 // PixelStorefChecked sends a checked request.
 // If an error occurs, it can be retrieved using PixelStorefCookie.Check()
 func PixelStorefChecked(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum Float32) PixelStorefCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'PixelStoref' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(pixelStorefRequest(c, ContextTag, Pname, Datum), cookie)
 	return PixelStorefCookie{cookie}
@@ -3948,6 +4212,9 @@ type PixelStoreiCookie struct {
 // PixelStorei sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func PixelStorei(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum int32) PixelStoreiCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'PixelStorei' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(pixelStoreiRequest(c, ContextTag, Pname, Datum), cookie)
 	return PixelStoreiCookie{cookie}
@@ -3956,6 +4223,9 @@ func PixelStorei(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum int32)
 // PixelStoreiChecked sends a checked request.
 // If an error occurs, it can be retrieved using PixelStoreiCookie.Check()
 func PixelStoreiChecked(c *xgb.Conn, ContextTag ContextTag, Pname uint32, Datum int32) PixelStoreiCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'PixelStorei' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(pixelStoreiRequest(c, ContextTag, Pname, Datum), cookie)
 	return PixelStoreiCookie{cookie}
@@ -4003,6 +4273,9 @@ type ReadPixelsCookie struct {
 // ReadPixels sends a checked request.
 // If an error occurs, it will be returned with the reply by calling ReadPixelsCookie.Reply()
 func ReadPixels(c *xgb.Conn, ContextTag ContextTag, X int32, Y int32, Width int32, Height int32, Format uint32, Type uint32, SwapBytes bool, LsbFirst bool) ReadPixelsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ReadPixels' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(readPixelsRequest(c, ContextTag, X, Y, Width, Height, Format, Type, SwapBytes, LsbFirst), cookie)
 	return ReadPixelsCookie{cookie}
@@ -4011,6 +4284,9 @@ func ReadPixels(c *xgb.Conn, ContextTag ContextTag, X int32, Y int32, Width int3
 // ReadPixelsUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func ReadPixelsUnchecked(c *xgb.Conn, ContextTag ContextTag, X int32, Y int32, Width int32, Height int32, Format uint32, Type uint32, SwapBytes bool, LsbFirst bool) ReadPixelsCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'ReadPixels' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(readPixelsRequest(c, ContextTag, X, Y, Width, Height, Format, Type, SwapBytes, LsbFirst), cookie)
 	return ReadPixelsCookie{cookie}
@@ -4121,6 +4397,9 @@ type GetBooleanvCookie struct {
 // GetBooleanv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetBooleanvCookie.Reply()
 func GetBooleanv(c *xgb.Conn, ContextTag ContextTag, Pname int32) GetBooleanvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetBooleanv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getBooleanvRequest(c, ContextTag, Pname), cookie)
 	return GetBooleanvCookie{cookie}
@@ -4129,6 +4408,9 @@ func GetBooleanv(c *xgb.Conn, ContextTag ContextTag, Pname int32) GetBooleanvCoo
 // GetBooleanvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetBooleanvUnchecked(c *xgb.Conn, ContextTag ContextTag, Pname int32) GetBooleanvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetBooleanv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getBooleanvRequest(c, ContextTag, Pname), cookie)
 	return GetBooleanvCookie{cookie}
@@ -4232,6 +4514,9 @@ type GetClipPlaneCookie struct {
 // GetClipPlane sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetClipPlaneCookie.Reply()
 func GetClipPlane(c *xgb.Conn, ContextTag ContextTag, Plane int32) GetClipPlaneCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetClipPlane' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getClipPlaneRequest(c, ContextTag, Plane), cookie)
 	return GetClipPlaneCookie{cookie}
@@ -4240,6 +4525,9 @@ func GetClipPlane(c *xgb.Conn, ContextTag ContextTag, Plane int32) GetClipPlaneC
 // GetClipPlaneUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetClipPlaneUnchecked(c *xgb.Conn, ContextTag ContextTag, Plane int32) GetClipPlaneCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetClipPlane' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getClipPlaneRequest(c, ContextTag, Plane), cookie)
 	return GetClipPlaneCookie{cookie}
@@ -4324,6 +4612,9 @@ type GetDoublevCookie struct {
 // GetDoublev sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetDoublevCookie.Reply()
 func GetDoublev(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetDoublevCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetDoublev' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getDoublevRequest(c, ContextTag, Pname), cookie)
 	return GetDoublevCookie{cookie}
@@ -4332,6 +4623,9 @@ func GetDoublev(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetDoublevCook
 // GetDoublevUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetDoublevUnchecked(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetDoublevCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetDoublev' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getDoublevRequest(c, ContextTag, Pname), cookie)
 	return GetDoublevCookie{cookie}
@@ -4427,6 +4721,9 @@ type GetErrorCookie struct {
 // GetError sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetErrorCookie.Reply()
 func GetError(c *xgb.Conn, ContextTag ContextTag) GetErrorCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetError' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getErrorRequest(c, ContextTag), cookie)
 	return GetErrorCookie{cookie}
@@ -4435,6 +4732,9 @@ func GetError(c *xgb.Conn, ContextTag ContextTag) GetErrorCookie {
 // GetErrorUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetErrorUnchecked(c *xgb.Conn, ContextTag ContextTag) GetErrorCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetError' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getErrorRequest(c, ContextTag), cookie)
 	return GetErrorCookie{cookie}
@@ -4509,6 +4809,9 @@ type GetFloatvCookie struct {
 // GetFloatv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetFloatvCookie.Reply()
 func GetFloatv(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetFloatvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetFloatv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getFloatvRequest(c, ContextTag, Pname), cookie)
 	return GetFloatvCookie{cookie}
@@ -4517,6 +4820,9 @@ func GetFloatv(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetFloatvCookie
 // GetFloatvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetFloatvUnchecked(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetFloatvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetFloatv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getFloatvRequest(c, ContextTag, Pname), cookie)
 	return GetFloatvCookie{cookie}
@@ -4612,6 +4918,9 @@ type GetIntegervCookie struct {
 // GetIntegerv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetIntegervCookie.Reply()
 func GetIntegerv(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetIntegervCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetIntegerv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getIntegervRequest(c, ContextTag, Pname), cookie)
 	return GetIntegervCookie{cookie}
@@ -4620,6 +4929,9 @@ func GetIntegerv(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetIntegervCo
 // GetIntegervUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetIntegervUnchecked(c *xgb.Conn, ContextTag ContextTag, Pname uint32) GetIntegervCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetIntegerv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getIntegervRequest(c, ContextTag, Pname), cookie)
 	return GetIntegervCookie{cookie}
@@ -4715,6 +5027,9 @@ type GetLightfvCookie struct {
 // GetLightfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetLightfvCookie.Reply()
 func GetLightfv(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32) GetLightfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetLightfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getLightfvRequest(c, ContextTag, Light, Pname), cookie)
 	return GetLightfvCookie{cookie}
@@ -4723,6 +5038,9 @@ func GetLightfv(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32)
 // GetLightfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetLightfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32) GetLightfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetLightfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getLightfvRequest(c, ContextTag, Light, Pname), cookie)
 	return GetLightfvCookie{cookie}
@@ -4821,6 +5139,9 @@ type GetLightivCookie struct {
 // GetLightiv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetLightivCookie.Reply()
 func GetLightiv(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32) GetLightivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetLightiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getLightivRequest(c, ContextTag, Light, Pname), cookie)
 	return GetLightivCookie{cookie}
@@ -4829,6 +5150,9 @@ func GetLightiv(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32)
 // GetLightivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetLightivUnchecked(c *xgb.Conn, ContextTag ContextTag, Light uint32, Pname uint32) GetLightivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetLightiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getLightivRequest(c, ContextTag, Light, Pname), cookie)
 	return GetLightivCookie{cookie}
@@ -4927,6 +5251,9 @@ type GetMapdvCookie struct {
 // GetMapdv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMapdvCookie.Reply()
 func GetMapdv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapdvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapdv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMapdvRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapdvCookie{cookie}
@@ -4935,6 +5262,9 @@ func GetMapdv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) G
 // GetMapdvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMapdvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapdvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapdv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMapdvRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapdvCookie{cookie}
@@ -5033,6 +5363,9 @@ type GetMapfvCookie struct {
 // GetMapfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMapfvCookie.Reply()
 func GetMapfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMapfvRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapfvCookie{cookie}
@@ -5041,6 +5374,9 @@ func GetMapfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) G
 // GetMapfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMapfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMapfvRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapfvCookie{cookie}
@@ -5139,6 +5475,9 @@ type GetMapivCookie struct {
 // GetMapiv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMapivCookie.Reply()
 func GetMapiv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMapivRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapivCookie{cookie}
@@ -5147,6 +5486,9 @@ func GetMapiv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) G
 // GetMapivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMapivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Query uint32) GetMapivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMapiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMapivRequest(c, ContextTag, Target, Query), cookie)
 	return GetMapivCookie{cookie}
@@ -5245,6 +5587,9 @@ type GetMaterialfvCookie struct {
 // GetMaterialfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMaterialfvCookie.Reply()
 func GetMaterialfv(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32) GetMaterialfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMaterialfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMaterialfvRequest(c, ContextTag, Face, Pname), cookie)
 	return GetMaterialfvCookie{cookie}
@@ -5253,6 +5598,9 @@ func GetMaterialfv(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32
 // GetMaterialfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMaterialfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32) GetMaterialfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMaterialfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMaterialfvRequest(c, ContextTag, Face, Pname), cookie)
 	return GetMaterialfvCookie{cookie}
@@ -5351,6 +5699,9 @@ type GetMaterialivCookie struct {
 // GetMaterialiv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMaterialivCookie.Reply()
 func GetMaterialiv(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32) GetMaterialivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMaterialiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMaterialivRequest(c, ContextTag, Face, Pname), cookie)
 	return GetMaterialivCookie{cookie}
@@ -5359,6 +5710,9 @@ func GetMaterialiv(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32
 // GetMaterialivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMaterialivUnchecked(c *xgb.Conn, ContextTag ContextTag, Face uint32, Pname uint32) GetMaterialivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMaterialiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMaterialivRequest(c, ContextTag, Face, Pname), cookie)
 	return GetMaterialivCookie{cookie}
@@ -5457,6 +5811,9 @@ type GetPixelMapfvCookie struct {
 // GetPixelMapfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetPixelMapfvCookie.Reply()
 func GetPixelMapfv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getPixelMapfvRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapfvCookie{cookie}
@@ -5465,6 +5822,9 @@ func GetPixelMapfv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapfv
 // GetPixelMapfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetPixelMapfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getPixelMapfvRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapfvCookie{cookie}
@@ -5560,6 +5920,9 @@ type GetPixelMapuivCookie struct {
 // GetPixelMapuiv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetPixelMapuivCookie.Reply()
 func GetPixelMapuiv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapuivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapuiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getPixelMapuivRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapuivCookie{cookie}
@@ -5568,6 +5931,9 @@ func GetPixelMapuiv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapu
 // GetPixelMapuivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetPixelMapuivUnchecked(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapuivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapuiv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getPixelMapuivRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapuivCookie{cookie}
@@ -5663,6 +6029,9 @@ type GetPixelMapusvCookie struct {
 // GetPixelMapusv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetPixelMapusvCookie.Reply()
 func GetPixelMapusv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapusvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapusv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getPixelMapusvRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapusvCookie{cookie}
@@ -5671,6 +6040,9 @@ func GetPixelMapusv(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapu
 // GetPixelMapusvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetPixelMapusvUnchecked(c *xgb.Conn, ContextTag ContextTag, Map uint32) GetPixelMapusvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPixelMapusv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getPixelMapusvRequest(c, ContextTag, Map), cookie)
 	return GetPixelMapusvCookie{cookie}
@@ -5766,6 +6138,9 @@ type GetPolygonStippleCookie struct {
 // GetPolygonStipple sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetPolygonStippleCookie.Reply()
 func GetPolygonStipple(c *xgb.Conn, ContextTag ContextTag, LsbFirst bool) GetPolygonStippleCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPolygonStipple' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getPolygonStippleRequest(c, ContextTag, LsbFirst), cookie)
 	return GetPolygonStippleCookie{cookie}
@@ -5774,6 +6149,9 @@ func GetPolygonStipple(c *xgb.Conn, ContextTag ContextTag, LsbFirst bool) GetPol
 // GetPolygonStippleUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetPolygonStippleUnchecked(c *xgb.Conn, ContextTag ContextTag, LsbFirst bool) GetPolygonStippleCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetPolygonStipple' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getPolygonStippleRequest(c, ContextTag, LsbFirst), cookie)
 	return GetPolygonStippleCookie{cookie}
@@ -5859,6 +6237,9 @@ type GetStringCookie struct {
 // GetString sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetStringCookie.Reply()
 func GetString(c *xgb.Conn, ContextTag ContextTag, Name uint32) GetStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getStringRequest(c, ContextTag, Name), cookie)
 	return GetStringCookie{cookie}
@@ -5867,6 +6248,9 @@ func GetString(c *xgb.Conn, ContextTag ContextTag, Name uint32) GetStringCookie
 // GetStringUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetStringUnchecked(c *xgb.Conn, ContextTag ContextTag, Name uint32) GetStringCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetString' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getStringRequest(c, ContextTag, Name), cookie)
 	return GetStringCookie{cookie}
@@ -5958,6 +6342,9 @@ type GetTexEnvfvCookie struct {
 // GetTexEnvfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexEnvfvCookie.Reply()
 func GetTexEnvfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexEnvfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexEnvfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexEnvfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexEnvfvCookie{cookie}
@@ -5966,6 +6353,9 @@ func GetTexEnvfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32
 // GetTexEnvfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexEnvfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexEnvfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexEnvfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexEnvfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexEnvfvCookie{cookie}
@@ -6064,6 +6454,9 @@ type GetTexEnvivCookie struct {
 // GetTexEnviv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexEnvivCookie.Reply()
 func GetTexEnviv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexEnvivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexEnviv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexEnvivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexEnvivCookie{cookie}
@@ -6072,6 +6465,9 @@ func GetTexEnviv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32
 // GetTexEnvivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexEnvivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexEnvivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexEnviv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexEnvivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexEnvivCookie{cookie}
@@ -6170,6 +6566,9 @@ type GetTexGendvCookie struct {
 // GetTexGendv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexGendvCookie.Reply()
 func GetTexGendv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGendvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGendv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexGendvRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGendvCookie{cookie}
@@ -6178,6 +6577,9 @@ func GetTexGendv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32)
 // GetTexGendvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexGendvUnchecked(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGendvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGendv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexGendvRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGendvCookie{cookie}
@@ -6276,6 +6678,9 @@ type GetTexGenfvCookie struct {
 // GetTexGenfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexGenfvCookie.Reply()
 func GetTexGenfv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGenfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGenfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexGenfvRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGenfvCookie{cookie}
@@ -6284,6 +6689,9 @@ func GetTexGenfv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32)
 // GetTexGenfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexGenfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGenfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGenfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexGenfvRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGenfvCookie{cookie}
@@ -6382,6 +6790,9 @@ type GetTexGenivCookie struct {
 // GetTexGeniv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexGenivCookie.Reply()
 func GetTexGeniv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGenivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGeniv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexGenivRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGenivCookie{cookie}
@@ -6390,6 +6801,9 @@ func GetTexGeniv(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32)
 // GetTexGenivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexGenivUnchecked(c *xgb.Conn, ContextTag ContextTag, Coord uint32, Pname uint32) GetTexGenivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexGeniv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexGenivRequest(c, ContextTag, Coord, Pname), cookie)
 	return GetTexGenivCookie{cookie}
@@ -6488,6 +6902,9 @@ type GetTexImageCookie struct {
 // GetTexImage sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexImageCookie.Reply()
 func GetTexImage(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Format uint32, Type uint32, SwapBytes bool) GetTexImageCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexImage' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexImageRequest(c, ContextTag, Target, Level, Format, Type, SwapBytes), cookie)
 	return GetTexImageCookie{cookie}
@@ -6496,6 +6913,9 @@ func GetTexImage(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32,
 // GetTexImageUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexImageUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Format uint32, Type uint32, SwapBytes bool) GetTexImageCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexImage' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexImageRequest(c, ContextTag, Target, Level, Format, Type, SwapBytes), cookie)
 	return GetTexImageCookie{cookie}
@@ -6608,6 +7028,9 @@ type GetTexParameterfvCookie struct {
 // GetTexParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexParameterfvCookie.Reply()
 func GetTexParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexParameterfvCookie{cookie}
@@ -6616,6 +7039,9 @@ func GetTexParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname
 // GetTexParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexParameterfvCookie{cookie}
@@ -6714,6 +7140,9 @@ type GetTexParameterivCookie struct {
 // GetTexParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexParameterivCookie.Reply()
 func GetTexParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexParameterivCookie{cookie}
@@ -6722,6 +7151,9 @@ func GetTexParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname
 // GetTexParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetTexParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetTexParameterivCookie{cookie}
@@ -6820,6 +7252,9 @@ type GetTexLevelParameterfvCookie struct {
 // GetTexLevelParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexLevelParameterfvCookie.Reply()
 func GetTexLevelParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Pname uint32) GetTexLevelParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexLevelParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexLevelParameterfvRequest(c, ContextTag, Target, Level, Pname), cookie)
 	return GetTexLevelParameterfvCookie{cookie}
@@ -6828,6 +7263,9 @@ func GetTexLevelParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, L
 // GetTexLevelParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexLevelParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Pname uint32) GetTexLevelParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexLevelParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexLevelParameterfvRequest(c, ContextTag, Target, Level, Pname), cookie)
 	return GetTexLevelParameterfvCookie{cookie}
@@ -6929,6 +7367,9 @@ type GetTexLevelParameterivCookie struct {
 // GetTexLevelParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetTexLevelParameterivCookie.Reply()
 func GetTexLevelParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Pname uint32) GetTexLevelParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexLevelParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getTexLevelParameterivRequest(c, ContextTag, Target, Level, Pname), cookie)
 	return GetTexLevelParameterivCookie{cookie}
@@ -6937,6 +7378,9 @@ func GetTexLevelParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, L
 // GetTexLevelParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetTexLevelParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32, Pname uint32) GetTexLevelParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetTexLevelParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getTexLevelParameterivRequest(c, ContextTag, Target, Level, Pname), cookie)
 	return GetTexLevelParameterivCookie{cookie}
@@ -7038,6 +7482,9 @@ type IsListCookie struct {
 // IsList sends a checked request.
 // If an error occurs, it will be returned with the reply by calling IsListCookie.Reply()
 func IsList(c *xgb.Conn, ContextTag ContextTag, List uint32) IsListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(isListRequest(c, ContextTag, List), cookie)
 	return IsListCookie{cookie}
@@ -7046,6 +7493,9 @@ func IsList(c *xgb.Conn, ContextTag ContextTag, List uint32) IsListCookie {
 // IsListUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func IsListUnchecked(c *xgb.Conn, ContextTag ContextTag, List uint32) IsListCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsList' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(isListRequest(c, ContextTag, List), cookie)
 	return IsListCookie{cookie}
@@ -7123,6 +7573,9 @@ type FlushCookie struct {
 // Flush sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func Flush(c *xgb.Conn, ContextTag ContextTag) FlushCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Flush' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(flushRequest(c, ContextTag), cookie)
 	return FlushCookie{cookie}
@@ -7131,6 +7584,9 @@ func Flush(c *xgb.Conn, ContextTag ContextTag) FlushCookie {
 // FlushChecked sends a checked request.
 // If an error occurs, it can be retrieved using FlushCookie.Check()
 func FlushChecked(c *xgb.Conn, ContextTag ContextTag) FlushCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'Flush' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(flushRequest(c, ContextTag), cookie)
 	return FlushCookie{cookie}
@@ -7172,6 +7628,9 @@ type AreTexturesResidentCookie struct {
 // AreTexturesResident sends a checked request.
 // If an error occurs, it will be returned with the reply by calling AreTexturesResidentCookie.Reply()
 func AreTexturesResident(c *xgb.Conn, ContextTag ContextTag, N int32, Textures []uint32) AreTexturesResidentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'AreTexturesResident' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(areTexturesResidentRequest(c, ContextTag, N, Textures), cookie)
 	return AreTexturesResidentCookie{cookie}
@@ -7180,6 +7639,9 @@ func AreTexturesResident(c *xgb.Conn, ContextTag ContextTag, N int32, Textures [
 // AreTexturesResidentUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func AreTexturesResidentUnchecked(c *xgb.Conn, ContextTag ContextTag, N int32, Textures []uint32) AreTexturesResidentCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'AreTexturesResident' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(areTexturesResidentRequest(c, ContextTag, N, Textures), cookie)
 	return AreTexturesResidentCookie{cookie}
@@ -7278,6 +7740,9 @@ type DeleteTexturesCookie struct {
 // DeleteTextures sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DeleteTextures(c *xgb.Conn, ContextTag ContextTag, N int32, Textures []uint32) DeleteTexturesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteTextures' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(deleteTexturesRequest(c, ContextTag, N, Textures), cookie)
 	return DeleteTexturesCookie{cookie}
@@ -7286,6 +7751,9 @@ func DeleteTextures(c *xgb.Conn, ContextTag ContextTag, N int32, Textures []uint
 // DeleteTexturesChecked sends a checked request.
 // If an error occurs, it can be retrieved using DeleteTexturesCookie.Check()
 func DeleteTexturesChecked(c *xgb.Conn, ContextTag ContextTag, N int32, Textures []uint32) DeleteTexturesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteTextures' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(deleteTexturesRequest(c, ContextTag, N, Textures), cookie)
 	return DeleteTexturesCookie{cookie}
@@ -7336,6 +7804,9 @@ type GenTexturesCookie struct {
 // GenTextures sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GenTexturesCookie.Reply()
 func GenTextures(c *xgb.Conn, ContextTag ContextTag, N int32) GenTexturesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenTextures' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(genTexturesRequest(c, ContextTag, N), cookie)
 	return GenTexturesCookie{cookie}
@@ -7344,6 +7815,9 @@ func GenTextures(c *xgb.Conn, ContextTag ContextTag, N int32) GenTexturesCookie
 // GenTexturesUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GenTexturesUnchecked(c *xgb.Conn, ContextTag ContextTag, N int32) GenTexturesCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenTextures' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(genTexturesRequest(c, ContextTag, N), cookie)
 	return GenTexturesCookie{cookie}
@@ -7428,6 +7902,9 @@ type IsTextureCookie struct {
 // IsTexture sends a checked request.
 // If an error occurs, it will be returned with the reply by calling IsTextureCookie.Reply()
 func IsTexture(c *xgb.Conn, ContextTag ContextTag, Texture uint32) IsTextureCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsTexture' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(isTextureRequest(c, ContextTag, Texture), cookie)
 	return IsTextureCookie{cookie}
@@ -7436,6 +7913,9 @@ func IsTexture(c *xgb.Conn, ContextTag ContextTag, Texture uint32) IsTextureCook
 // IsTextureUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func IsTextureUnchecked(c *xgb.Conn, ContextTag ContextTag, Texture uint32) IsTextureCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsTexture' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(isTextureRequest(c, ContextTag, Texture), cookie)
 	return IsTextureCookie{cookie}
@@ -7513,6 +7993,9 @@ type GetColorTableCookie struct {
 // GetColorTable sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetColorTableCookie.Reply()
 func GetColorTable(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetColorTableCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTable' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getColorTableRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetColorTableCookie{cookie}
@@ -7521,6 +8004,9 @@ func GetColorTable(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uin
 // GetColorTableUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetColorTableUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetColorTableCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTable' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getColorTableRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetColorTableCookie{cookie}
@@ -7622,6 +8108,9 @@ type GetColorTableParameterfvCookie struct {
 // GetColorTableParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetColorTableParameterfvCookie.Reply()
 func GetColorTableParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetColorTableParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTableParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getColorTableParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetColorTableParameterfvCookie{cookie}
@@ -7630,6 +8119,9 @@ func GetColorTableParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32,
 // GetColorTableParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetColorTableParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetColorTableParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTableParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getColorTableParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetColorTableParameterfvCookie{cookie}
@@ -7728,6 +8220,9 @@ type GetColorTableParameterivCookie struct {
 // GetColorTableParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetColorTableParameterivCookie.Reply()
 func GetColorTableParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetColorTableParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTableParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getColorTableParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetColorTableParameterivCookie{cookie}
@@ -7736,6 +8231,9 @@ func GetColorTableParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32,
 // GetColorTableParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetColorTableParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetColorTableParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetColorTableParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getColorTableParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetColorTableParameterivCookie{cookie}
@@ -7834,6 +8332,9 @@ type GetConvolutionFilterCookie struct {
 // GetConvolutionFilter sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetConvolutionFilterCookie.Reply()
 func GetConvolutionFilter(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetConvolutionFilterCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionFilter' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getConvolutionFilterRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetConvolutionFilterCookie{cookie}
@@ -7842,6 +8343,9 @@ func GetConvolutionFilter(c *xgb.Conn, ContextTag ContextTag, Target uint32, For
 // GetConvolutionFilterUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetConvolutionFilterUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetConvolutionFilterCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionFilter' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getConvolutionFilterRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetConvolutionFilterCookie{cookie}
@@ -7947,6 +8451,9 @@ type GetConvolutionParameterfvCookie struct {
 // GetConvolutionParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetConvolutionParameterfvCookie.Reply()
 func GetConvolutionParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetConvolutionParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getConvolutionParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetConvolutionParameterfvCookie{cookie}
@@ -7955,6 +8462,9 @@ func GetConvolutionParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32
 // GetConvolutionParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetConvolutionParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetConvolutionParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getConvolutionParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetConvolutionParameterfvCookie{cookie}
@@ -8053,6 +8563,9 @@ type GetConvolutionParameterivCookie struct {
 // GetConvolutionParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetConvolutionParameterivCookie.Reply()
 func GetConvolutionParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetConvolutionParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getConvolutionParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetConvolutionParameterivCookie{cookie}
@@ -8061,6 +8574,9 @@ func GetConvolutionParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32
 // GetConvolutionParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetConvolutionParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetConvolutionParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetConvolutionParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getConvolutionParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetConvolutionParameterivCookie{cookie}
@@ -8159,6 +8675,9 @@ type GetSeparableFilterCookie struct {
 // GetSeparableFilter sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetSeparableFilterCookie.Reply()
 func GetSeparableFilter(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetSeparableFilterCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetSeparableFilter' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getSeparableFilterRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetSeparableFilterCookie{cookie}
@@ -8167,6 +8686,9 @@ func GetSeparableFilter(c *xgb.Conn, ContextTag ContextTag, Target uint32, Forma
 // GetSeparableFilterUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetSeparableFilterUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool) GetSeparableFilterCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetSeparableFilter' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getSeparableFilterRequest(c, ContextTag, Target, Format, Type, SwapBytes), cookie)
 	return GetSeparableFilterCookie{cookie}
@@ -8272,6 +8794,9 @@ type GetHistogramCookie struct {
 // GetHistogram sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetHistogramCookie.Reply()
 func GetHistogram(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool, Reset bool) GetHistogramCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogram' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getHistogramRequest(c, ContextTag, Target, Format, Type, SwapBytes, Reset), cookie)
 	return GetHistogramCookie{cookie}
@@ -8280,6 +8805,9 @@ func GetHistogram(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint
 // GetHistogramUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetHistogramUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool, Reset bool) GetHistogramCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogram' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getHistogramRequest(c, ContextTag, Target, Format, Type, SwapBytes, Reset), cookie)
 	return GetHistogramCookie{cookie}
@@ -8388,6 +8916,9 @@ type GetHistogramParameterfvCookie struct {
 // GetHistogramParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetHistogramParameterfvCookie.Reply()
 func GetHistogramParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetHistogramParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogramParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getHistogramParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetHistogramParameterfvCookie{cookie}
@@ -8396,6 +8927,9 @@ func GetHistogramParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32,
 // GetHistogramParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetHistogramParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetHistogramParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogramParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getHistogramParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetHistogramParameterfvCookie{cookie}
@@ -8494,6 +9028,9 @@ type GetHistogramParameterivCookie struct {
 // GetHistogramParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetHistogramParameterivCookie.Reply()
 func GetHistogramParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetHistogramParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogramParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getHistogramParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetHistogramParameterivCookie{cookie}
@@ -8502,6 +9039,9 @@ func GetHistogramParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32,
 // GetHistogramParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetHistogramParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetHistogramParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetHistogramParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getHistogramParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetHistogramParameterivCookie{cookie}
@@ -8600,6 +9140,9 @@ type GetMinmaxCookie struct {
 // GetMinmax sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMinmaxCookie.Reply()
 func GetMinmax(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool, Reset bool) GetMinmaxCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmax' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMinmaxRequest(c, ContextTag, Target, Format, Type, SwapBytes, Reset), cookie)
 	return GetMinmaxCookie{cookie}
@@ -8608,6 +9151,9 @@ func GetMinmax(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32,
 // GetMinmaxUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMinmaxUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Format uint32, Type uint32, SwapBytes bool, Reset bool) GetMinmaxCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmax' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMinmaxRequest(c, ContextTag, Target, Format, Type, SwapBytes, Reset), cookie)
 	return GetMinmaxCookie{cookie}
@@ -8709,6 +9255,9 @@ type GetMinmaxParameterfvCookie struct {
 // GetMinmaxParameterfv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMinmaxParameterfvCookie.Reply()
 func GetMinmaxParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetMinmaxParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmaxParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMinmaxParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetMinmaxParameterfvCookie{cookie}
@@ -8717,6 +9266,9 @@ func GetMinmaxParameterfv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pna
 // GetMinmaxParameterfvUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMinmaxParameterfvUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetMinmaxParameterfvCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmaxParameterfv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMinmaxParameterfvRequest(c, ContextTag, Target, Pname), cookie)
 	return GetMinmaxParameterfvCookie{cookie}
@@ -8815,6 +9367,9 @@ type GetMinmaxParameterivCookie struct {
 // GetMinmaxParameteriv sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetMinmaxParameterivCookie.Reply()
 func GetMinmaxParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetMinmaxParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmaxParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getMinmaxParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetMinmaxParameterivCookie{cookie}
@@ -8823,6 +9378,9 @@ func GetMinmaxParameteriv(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pna
 // GetMinmaxParameterivUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetMinmaxParameterivUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetMinmaxParameterivCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetMinmaxParameteriv' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getMinmaxParameterivRequest(c, ContextTag, Target, Pname), cookie)
 	return GetMinmaxParameterivCookie{cookie}
@@ -8921,6 +9479,9 @@ type GetCompressedTexImageARBCookie struct {
 // GetCompressedTexImageARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetCompressedTexImageARBCookie.Reply()
 func GetCompressedTexImageARB(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32) GetCompressedTexImageARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetCompressedTexImageARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getCompressedTexImageARBRequest(c, ContextTag, Target, Level), cookie)
 	return GetCompressedTexImageARBCookie{cookie}
@@ -8929,6 +9490,9 @@ func GetCompressedTexImageARB(c *xgb.Conn, ContextTag ContextTag, Target uint32,
 // GetCompressedTexImageARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetCompressedTexImageARBUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Level int32) GetCompressedTexImageARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetCompressedTexImageARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getCompressedTexImageARBRequest(c, ContextTag, Target, Level), cookie)
 	return GetCompressedTexImageARBCookie{cookie}
@@ -9020,6 +9584,9 @@ type DeleteQueriesARBCookie struct {
 // DeleteQueriesARB sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func DeleteQueriesARB(c *xgb.Conn, ContextTag ContextTag, N int32, Ids []uint32) DeleteQueriesARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteQueriesARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, false)
 	c.NewRequest(deleteQueriesARBRequest(c, ContextTag, N, Ids), cookie)
 	return DeleteQueriesARBCookie{cookie}
@@ -9028,6 +9595,9 @@ func DeleteQueriesARB(c *xgb.Conn, ContextTag ContextTag, N int32, Ids []uint32)
 // DeleteQueriesARBChecked sends a checked request.
 // If an error occurs, it can be retrieved using DeleteQueriesARBCookie.Check()
 func DeleteQueriesARBChecked(c *xgb.Conn, ContextTag ContextTag, N int32, Ids []uint32) DeleteQueriesARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'DeleteQueriesARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, false)
 	c.NewRequest(deleteQueriesARBRequest(c, ContextTag, N, Ids), cookie)
 	return DeleteQueriesARBCookie{cookie}
@@ -9078,6 +9648,9 @@ type GenQueriesARBCookie struct {
 // GenQueriesARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GenQueriesARBCookie.Reply()
 func GenQueriesARB(c *xgb.Conn, ContextTag ContextTag, N int32) GenQueriesARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenQueriesARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(genQueriesARBRequest(c, ContextTag, N), cookie)
 	return GenQueriesARBCookie{cookie}
@@ -9086,6 +9659,9 @@ func GenQueriesARB(c *xgb.Conn, ContextTag ContextTag, N int32) GenQueriesARBCoo
 // GenQueriesARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GenQueriesARBUnchecked(c *xgb.Conn, ContextTag ContextTag, N int32) GenQueriesARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GenQueriesARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(genQueriesARBRequest(c, ContextTag, N), cookie)
 	return GenQueriesARBCookie{cookie}
@@ -9170,6 +9746,9 @@ type IsQueryARBCookie struct {
 // IsQueryARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling IsQueryARBCookie.Reply()
 func IsQueryARB(c *xgb.Conn, ContextTag ContextTag, Id uint32) IsQueryARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsQueryARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(isQueryARBRequest(c, ContextTag, Id), cookie)
 	return IsQueryARBCookie{cookie}
@@ -9178,6 +9757,9 @@ func IsQueryARB(c *xgb.Conn, ContextTag ContextTag, Id uint32) IsQueryARBCookie
 // IsQueryARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func IsQueryARBUnchecked(c *xgb.Conn, ContextTag ContextTag, Id uint32) IsQueryARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsQueryARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(isQueryARBRequest(c, ContextTag, Id), cookie)
 	return IsQueryARBCookie{cookie}
@@ -9255,6 +9837,9 @@ type GetQueryivARBCookie struct {
 // GetQueryivARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetQueryivARBCookie.Reply()
 func GetQueryivARB(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetQueryivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getQueryivARBRequest(c, ContextTag, Target, Pname), cookie)
 	return GetQueryivARBCookie{cookie}
@@ -9263,6 +9848,9 @@ func GetQueryivARB(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint
 // GetQueryivARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetQueryivARBUnchecked(c *xgb.Conn, ContextTag ContextTag, Target uint32, Pname uint32) GetQueryivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getQueryivARBRequest(c, ContextTag, Target, Pname), cookie)
 	return GetQueryivARBCookie{cookie}
@@ -9361,6 +9949,9 @@ type GetQueryObjectivARBCookie struct {
 // GetQueryObjectivARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetQueryObjectivARBCookie.Reply()
 func GetQueryObjectivARB(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname uint32) GetQueryObjectivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryObjectivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getQueryObjectivARBRequest(c, ContextTag, Id, Pname), cookie)
 	return GetQueryObjectivARBCookie{cookie}
@@ -9369,6 +9960,9 @@ func GetQueryObjectivARB(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname ui
 // GetQueryObjectivARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetQueryObjectivARBUnchecked(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname uint32) GetQueryObjectivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryObjectivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getQueryObjectivARBRequest(c, ContextTag, Id, Pname), cookie)
 	return GetQueryObjectivARBCookie{cookie}
@@ -9467,6 +10061,9 @@ type GetQueryObjectuivARBCookie struct {
 // GetQueryObjectuivARB sends a checked request.
 // If an error occurs, it will be returned with the reply by calling GetQueryObjectuivARBCookie.Reply()
 func GetQueryObjectuivARB(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname uint32) GetQueryObjectuivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryObjectuivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(true, true)
 	c.NewRequest(getQueryObjectuivARBRequest(c, ContextTag, Id, Pname), cookie)
 	return GetQueryObjectuivARBCookie{cookie}
@@ -9475,6 +10072,9 @@ func GetQueryObjectuivARB(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname u
 // GetQueryObjectuivARBUnchecked sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
 func GetQueryObjectuivARBUnchecked(c *xgb.Conn, ContextTag ContextTag, Id uint32, Pname uint32) GetQueryObjectuivARBCookie {
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'GetQueryObjectuivARB' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
 	cookie := c.NewCookie(false, true)
 	c.NewRequest(getQueryObjectuivARBRequest(c, ContextTag, Id, Pname), cookie)
 	return GetQueryObjectuivARBCookie{cookie}