Merge aarzilli/xgb, branch xcb1.12 as nexgb

History has been linearized and rewritten to stay under the new
subdirectory.  I want to make changes incompatible to BurntSushi/xgb.

The history begs for being thrown away entirely because of its quality
and because it doesn't cover the Google period but it is still useful
for copyright tracking.

1 files changed, 1301 insertions, 0 deletions

diff --git a/nexgb/xf86dri/xf86dri.go b/nexgb/xf86dri/xf86dri.go
new file mode 100644
index 0000000..06f49a0
--- /dev/null
+++ b/nexgb/xf86dri/xf86dri.go
@@ -0,0 +1,1301 @@
+// Package xf86dri is the X client API for the XFree86-DRI extension.
+package xf86dri
+
+// This file is automatically generated from xf86dri.xml. Edit at your peril!
+
+import (
+	"github.com/BurntSushi/xgb"
+
+	"github.com/BurntSushi/xgb/xproto"
+)
+
+// Init must be called before using the XFree86-DRI extension.
+func Init(c *xgb.Conn) error {
+	reply, err := xproto.QueryExtension(c, 11, "XFree86-DRI").Reply()
+	switch {
+	case err != nil:
+		return err
+	case !reply.Present:
+		return xgb.Errorf("No extension named XFree86-DRI could be found on on the server.")
+	}
+
+	c.ExtLock.Lock()
+	c.Extensions["XFree86-DRI"] = reply.MajorOpcode
+	c.ExtLock.Unlock()
+	for evNum, fun := range xgb.NewExtEventFuncs["XFree86-DRI"] {
+		xgb.NewEventFuncs[int(reply.FirstEvent)+evNum] = fun
+	}
+	for errNum, fun := range xgb.NewExtErrorFuncs["XFree86-DRI"] {
+		xgb.NewErrorFuncs[int(reply.FirstError)+errNum] = fun
+	}
+	return nil
+}
+
+func init() {
+	xgb.NewExtEventFuncs["XFree86-DRI"] = make(map[int]xgb.NewEventFun)
+	xgb.NewExtErrorFuncs["XFree86-DRI"] = make(map[int]xgb.NewErrorFun)
+}
+
+type DrmClipRect struct {
+	X1 int16
+	Y1 int16
+	X2 int16
+	X3 int16
+}
+
+// DrmClipRectRead reads a byte slice into a DrmClipRect value.
+func DrmClipRectRead(buf []byte, v *DrmClipRect) int {
+	b := 0
+
+	v.X1 = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.Y1 = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.X2 = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.X3 = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	return b
+}
+
+// DrmClipRectReadList reads a byte slice into a list of DrmClipRect values.
+func DrmClipRectReadList(buf []byte, dest []DrmClipRect) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = DrmClipRect{}
+		b += DrmClipRectRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a DrmClipRect value to a byte slice.
+func (v DrmClipRect) Bytes() []byte {
+	buf := make([]byte, 8)
+	b := 0
+
+	xgb.Put16(buf[b:], uint16(v.X1))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.Y1))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.X2))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.X3))
+	b += 2
+
+	return buf[:b]
+}
+
+// DrmClipRectListBytes writes a list of DrmClipRect values to a byte slice.
+func DrmClipRectListBytes(buf []byte, list []DrmClipRect) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+// Skipping definition for base type 'Bool'
+
+// Skipping definition for base type 'Byte'
+
+// Skipping definition for base type 'Card8'
+
+// Skipping definition for base type 'Char'
+
+// Skipping definition for base type 'Void'
+
+// Skipping definition for base type 'Double'
+
+// Skipping definition for base type 'Float'
+
+// Skipping definition for base type 'Int16'
+
+// Skipping definition for base type 'Int32'
+
+// Skipping definition for base type 'Int8'
+
+// Skipping definition for base type 'Card16'
+
+// Skipping definition for base type 'Card32'
+
+// AuthConnectionCookie is a cookie used only for AuthConnection requests.
+type AuthConnectionCookie struct {
+	*xgb.Cookie
+}
+
+// AuthConnection sends a checked request.
+// If an error occurs, it will be returned with the reply by calling AuthConnectionCookie.Reply()
+func AuthConnection(c *xgb.Conn, Screen uint32, Magic uint32) AuthConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'AuthConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(authConnectionRequest(c, Screen, Magic), cookie)
+	return AuthConnectionCookie{cookie}
+}
+
+// AuthConnectionUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func AuthConnectionUnchecked(c *xgb.Conn, Screen uint32, Magic uint32) AuthConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'AuthConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(authConnectionRequest(c, Screen, Magic), cookie)
+	return AuthConnectionCookie{cookie}
+}
+
+// AuthConnectionReply represents the data returned from a AuthConnection request.
+type AuthConnectionReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	Authenticated uint32
+}
+
+// Reply blocks and returns the reply data for a AuthConnection request.
+func (cook AuthConnectionCookie) Reply() (*AuthConnectionReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return authConnectionReply(buf), nil
+}
+
+// authConnectionReply reads a byte slice into a AuthConnectionReply value.
+func authConnectionReply(buf []byte) *AuthConnectionReply {
+	v := new(AuthConnectionReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.Authenticated = xgb.Get32(buf[b:])
+	b += 4
+
+	return v
+}
+
+// Write request to wire for AuthConnection
+// authConnectionRequest writes a AuthConnection request to a byte slice.
+func authConnectionRequest(c *xgb.Conn, Screen uint32, Magic uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 11 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Magic)
+	b += 4
+
+	return buf
+}
+
+// CloseConnectionCookie is a cookie used only for CloseConnection requests.
+type CloseConnectionCookie struct {
+	*xgb.Cookie
+}
+
+// CloseConnection sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CloseConnection(c *xgb.Conn, Screen uint32) CloseConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CloseConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(closeConnectionRequest(c, Screen), cookie)
+	return CloseConnectionCookie{cookie}
+}
+
+// CloseConnectionChecked sends a checked request.
+// If an error occurs, it can be retrieved using CloseConnectionCookie.Check()
+func CloseConnectionChecked(c *xgb.Conn, Screen uint32) CloseConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CloseConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(closeConnectionRequest(c, Screen), cookie)
+	return CloseConnectionCookie{cookie}
+}
+
+// Check returns an error if one occurred for checked requests that are not expecting a reply.
+// This cannot be called for requests expecting a reply, nor for unchecked requests.
+func (cook CloseConnectionCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CloseConnection
+// closeConnectionRequest writes a CloseConnection request to a byte slice.
+func closeConnectionRequest(c *xgb.Conn, Screen uint32) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 3 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	return buf
+}
+
+// CreateContextCookie is a cookie used only for CreateContext requests.
+type CreateContextCookie struct {
+	*xgb.Cookie
+}
+
+// CreateContext sends a checked request.
+// If an error occurs, it will be returned with the reply by calling CreateContextCookie.Reply()
+func CreateContext(c *xgb.Conn, Screen uint32, Visual uint32, Context uint32) CreateContextCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(createContextRequest(c, Screen, Visual, Context), cookie)
+	return CreateContextCookie{cookie}
+}
+
+// CreateContextUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateContextUnchecked(c *xgb.Conn, Screen uint32, Visual uint32, Context uint32) CreateContextCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CreateContext' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(createContextRequest(c, Screen, Visual, Context), cookie)
+	return CreateContextCookie{cookie}
+}
+
+// CreateContextReply represents the data returned from a CreateContext request.
+type CreateContextReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	HwContext uint32
+}
+
+// Reply blocks and returns the reply data for a CreateContext request.
+func (cook CreateContextCookie) Reply() (*CreateContextReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return createContextReply(buf), nil
+}
+
+// createContextReply reads a byte slice into a CreateContextReply value.
+func createContextReply(buf []byte) *CreateContextReply {
+	v := new(CreateContextReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.HwContext = xgb.Get32(buf[b:])
+	b += 4
+
+	return v
+}
+
+// Write request to wire for CreateContext
+// createContextRequest writes a CreateContext request to a byte slice.
+func createContextRequest(c *xgb.Conn, Screen uint32, Visual uint32, Context uint32) []byte {
+	size := 16
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 5 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Visual)
+	b += 4
+
+	xgb.Put32(buf[b:], Context)
+	b += 4
+
+	return buf
+}
+
+// CreateDrawableCookie is a cookie used only for CreateDrawable requests.
+type CreateDrawableCookie struct {
+	*xgb.Cookie
+}
+
+// CreateDrawable sends a checked request.
+// If an error occurs, it will be returned with the reply by calling CreateDrawableCookie.Reply()
+func CreateDrawable(c *xgb.Conn, Screen uint32, Drawable uint32) CreateDrawableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CreateDrawable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(createDrawableRequest(c, Screen, Drawable), cookie)
+	return CreateDrawableCookie{cookie}
+}
+
+// CreateDrawableUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateDrawableUnchecked(c *xgb.Conn, Screen uint32, Drawable uint32) CreateDrawableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'CreateDrawable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(createDrawableRequest(c, Screen, Drawable), cookie)
+	return CreateDrawableCookie{cookie}
+}
+
+// CreateDrawableReply represents the data returned from a CreateDrawable request.
+type CreateDrawableReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	HwDrawableHandle uint32
+}
+
+// Reply blocks and returns the reply data for a CreateDrawable request.
+func (cook CreateDrawableCookie) Reply() (*CreateDrawableReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return createDrawableReply(buf), nil
+}
+
+// createDrawableReply reads a byte slice into a CreateDrawableReply value.
+func createDrawableReply(buf []byte) *CreateDrawableReply {
+	v := new(CreateDrawableReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.HwDrawableHandle = xgb.Get32(buf[b:])
+	b += 4
+
+	return v
+}
+
+// Write request to wire for CreateDrawable
+// createDrawableRequest writes a CreateDrawable request to a byte slice.
+func createDrawableRequest(c *xgb.Conn, Screen uint32, Drawable uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 7 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Drawable)
+	b += 4
+
+	return buf
+}
+
+// DestroyContextCookie is a cookie used only for DestroyContext requests.
+type DestroyContextCookie struct {
+	*xgb.Cookie
+}
+
+// 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, Screen uint32, Context uint32) DestroyContextCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(destroyContextRequest(c, Screen, Context), cookie)
+	return DestroyContextCookie{cookie}
+}
+
+// DestroyContextChecked sends a checked request.
+// If an error occurs, it can be retrieved using DestroyContextCookie.Check()
+func DestroyContextChecked(c *xgb.Conn, Screen uint32, Context uint32) DestroyContextCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'DestroyContext' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(destroyContextRequest(c, Screen, Context), cookie)
+	return DestroyContextCookie{cookie}
+}
+
+// Check returns an error if one occurred for checked requests that are not expecting a reply.
+// This cannot be called for requests expecting a reply, nor for unchecked requests.
+func (cook DestroyContextCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for DestroyContext
+// destroyContextRequest writes a DestroyContext request to a byte slice.
+func destroyContextRequest(c *xgb.Conn, Screen uint32, Context uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 6 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Context)
+	b += 4
+
+	return buf
+}
+
+// DestroyDrawableCookie is a cookie used only for DestroyDrawable requests.
+type DestroyDrawableCookie struct {
+	*xgb.Cookie
+}
+
+// DestroyDrawable sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func DestroyDrawable(c *xgb.Conn, Screen uint32, Drawable uint32) DestroyDrawableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'DestroyDrawable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(destroyDrawableRequest(c, Screen, Drawable), cookie)
+	return DestroyDrawableCookie{cookie}
+}
+
+// DestroyDrawableChecked sends a checked request.
+// If an error occurs, it can be retrieved using DestroyDrawableCookie.Check()
+func DestroyDrawableChecked(c *xgb.Conn, Screen uint32, Drawable uint32) DestroyDrawableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'DestroyDrawable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(destroyDrawableRequest(c, Screen, Drawable), cookie)
+	return DestroyDrawableCookie{cookie}
+}
+
+// Check returns an error if one occurred for checked requests that are not expecting a reply.
+// This cannot be called for requests expecting a reply, nor for unchecked requests.
+func (cook DestroyDrawableCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for DestroyDrawable
+// destroyDrawableRequest writes a DestroyDrawable request to a byte slice.
+func destroyDrawableRequest(c *xgb.Conn, Screen uint32, Drawable uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 8 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Drawable)
+	b += 4
+
+	return buf
+}
+
+// GetClientDriverNameCookie is a cookie used only for GetClientDriverName requests.
+type GetClientDriverNameCookie struct {
+	*xgb.Cookie
+}
+
+// GetClientDriverName sends a checked request.
+// If an error occurs, it will be returned with the reply by calling GetClientDriverNameCookie.Reply()
+func GetClientDriverName(c *xgb.Conn, Screen uint32) GetClientDriverNameCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetClientDriverName' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(getClientDriverNameRequest(c, Screen), cookie)
+	return GetClientDriverNameCookie{cookie}
+}
+
+// GetClientDriverNameUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func GetClientDriverNameUnchecked(c *xgb.Conn, Screen uint32) GetClientDriverNameCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetClientDriverName' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(getClientDriverNameRequest(c, Screen), cookie)
+	return GetClientDriverNameCookie{cookie}
+}
+
+// GetClientDriverNameReply represents the data returned from a GetClientDriverName request.
+type GetClientDriverNameReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	ClientDriverMajorVersion uint32
+	ClientDriverMinorVersion uint32
+	ClientDriverPatchVersion uint32
+	ClientDriverNameLen      uint32
+	// padding: 8 bytes
+	ClientDriverName string // size: xgb.Pad((int(ClientDriverNameLen) * 1))
+}
+
+// Reply blocks and returns the reply data for a GetClientDriverName request.
+func (cook GetClientDriverNameCookie) Reply() (*GetClientDriverNameReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return getClientDriverNameReply(buf), nil
+}
+
+// getClientDriverNameReply reads a byte slice into a GetClientDriverNameReply value.
+func getClientDriverNameReply(buf []byte) *GetClientDriverNameReply {
+	v := new(GetClientDriverNameReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.ClientDriverMajorVersion = xgb.Get32(buf[b:])
+	b += 4
+
+	v.ClientDriverMinorVersion = xgb.Get32(buf[b:])
+	b += 4
+
+	v.ClientDriverPatchVersion = xgb.Get32(buf[b:])
+	b += 4
+
+	v.ClientDriverNameLen = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 8 // padding
+
+	{
+		byteString := make([]byte, v.ClientDriverNameLen)
+		copy(byteString[:v.ClientDriverNameLen], buf[b:])
+		v.ClientDriverName = string(byteString)
+		b += int(v.ClientDriverNameLen)
+	}
+
+	return v
+}
+
+// Write request to wire for GetClientDriverName
+// getClientDriverNameRequest writes a GetClientDriverName request to a byte slice.
+func getClientDriverNameRequest(c *xgb.Conn, Screen uint32) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 4 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	return buf
+}
+
+// GetDeviceInfoCookie is a cookie used only for GetDeviceInfo requests.
+type GetDeviceInfoCookie struct {
+	*xgb.Cookie
+}
+
+// GetDeviceInfo sends a checked request.
+// If an error occurs, it will be returned with the reply by calling GetDeviceInfoCookie.Reply()
+func GetDeviceInfo(c *xgb.Conn, Screen uint32) GetDeviceInfoCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetDeviceInfo' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(getDeviceInfoRequest(c, Screen), cookie)
+	return GetDeviceInfoCookie{cookie}
+}
+
+// GetDeviceInfoUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func GetDeviceInfoUnchecked(c *xgb.Conn, Screen uint32) GetDeviceInfoCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetDeviceInfo' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(getDeviceInfoRequest(c, Screen), cookie)
+	return GetDeviceInfoCookie{cookie}
+}
+
+// GetDeviceInfoReply represents the data returned from a GetDeviceInfo request.
+type GetDeviceInfoReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	FramebufferHandleLow    uint32
+	FramebufferHandleHigh   uint32
+	FramebufferOriginOffset uint32
+	FramebufferSize         uint32
+	FramebufferStride       uint32
+	DevicePrivateSize       uint32
+	DevicePrivate           []uint32 // size: xgb.Pad((int(DevicePrivateSize) * 4))
+}
+
+// Reply blocks and returns the reply data for a GetDeviceInfo request.
+func (cook GetDeviceInfoCookie) Reply() (*GetDeviceInfoReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return getDeviceInfoReply(buf), nil
+}
+
+// getDeviceInfoReply reads a byte slice into a GetDeviceInfoReply value.
+func getDeviceInfoReply(buf []byte) *GetDeviceInfoReply {
+	v := new(GetDeviceInfoReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.FramebufferHandleLow = xgb.Get32(buf[b:])
+	b += 4
+
+	v.FramebufferHandleHigh = xgb.Get32(buf[b:])
+	b += 4
+
+	v.FramebufferOriginOffset = xgb.Get32(buf[b:])
+	b += 4
+
+	v.FramebufferSize = xgb.Get32(buf[b:])
+	b += 4
+
+	v.FramebufferStride = xgb.Get32(buf[b:])
+	b += 4
+
+	v.DevicePrivateSize = xgb.Get32(buf[b:])
+	b += 4
+
+	v.DevicePrivate = make([]uint32, v.DevicePrivateSize)
+	for i := 0; i < int(v.DevicePrivateSize); i++ {
+		v.DevicePrivate[i] = xgb.Get32(buf[b:])
+		b += 4
+	}
+
+	return v
+}
+
+// Write request to wire for GetDeviceInfo
+// getDeviceInfoRequest writes a GetDeviceInfo request to a byte slice.
+func getDeviceInfoRequest(c *xgb.Conn, Screen uint32) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 10 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	return buf
+}
+
+// GetDrawableInfoCookie is a cookie used only for GetDrawableInfo requests.
+type GetDrawableInfoCookie struct {
+	*xgb.Cookie
+}
+
+// GetDrawableInfo sends a checked request.
+// If an error occurs, it will be returned with the reply by calling GetDrawableInfoCookie.Reply()
+func GetDrawableInfo(c *xgb.Conn, Screen uint32, Drawable uint32) GetDrawableInfoCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetDrawableInfo' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(getDrawableInfoRequest(c, Screen, Drawable), cookie)
+	return GetDrawableInfoCookie{cookie}
+}
+
+// GetDrawableInfoUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func GetDrawableInfoUnchecked(c *xgb.Conn, Screen uint32, Drawable uint32) GetDrawableInfoCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'GetDrawableInfo' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(getDrawableInfoRequest(c, Screen, Drawable), cookie)
+	return GetDrawableInfoCookie{cookie}
+}
+
+// GetDrawableInfoReply represents the data returned from a GetDrawableInfo request.
+type GetDrawableInfoReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	DrawableTableIndex uint32
+	DrawableTableStamp uint32
+	DrawableOriginX    int16
+	DrawableOriginY    int16
+	DrawableSizeW      int16
+	DrawableSizeH      int16
+	NumClipRects       uint32
+	BackX              int16
+	BackY              int16
+	NumBackClipRects   uint32
+	ClipRects          []DrmClipRect // size: xgb.Pad((int(NumClipRects) * 8))
+	BackClipRects      []DrmClipRect // size: xgb.Pad((int(NumBackClipRects) * 8))
+}
+
+// Reply blocks and returns the reply data for a GetDrawableInfo request.
+func (cook GetDrawableInfoCookie) Reply() (*GetDrawableInfoReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return getDrawableInfoReply(buf), nil
+}
+
+// getDrawableInfoReply reads a byte slice into a GetDrawableInfoReply value.
+func getDrawableInfoReply(buf []byte) *GetDrawableInfoReply {
+	v := new(GetDrawableInfoReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.DrawableTableIndex = xgb.Get32(buf[b:])
+	b += 4
+
+	v.DrawableTableStamp = xgb.Get32(buf[b:])
+	b += 4
+
+	v.DrawableOriginX = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.DrawableOriginY = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.DrawableSizeW = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.DrawableSizeH = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.NumClipRects = xgb.Get32(buf[b:])
+	b += 4
+
+	v.BackX = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.BackY = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.NumBackClipRects = xgb.Get32(buf[b:])
+	b += 4
+
+	v.ClipRects = make([]DrmClipRect, v.NumClipRects)
+	b += DrmClipRectReadList(buf[b:], v.ClipRects)
+
+	v.BackClipRects = make([]DrmClipRect, v.NumBackClipRects)
+	b += DrmClipRectReadList(buf[b:], v.BackClipRects)
+
+	return v
+}
+
+// Write request to wire for GetDrawableInfo
+// getDrawableInfoRequest writes a GetDrawableInfo request to a byte slice.
+func getDrawableInfoRequest(c *xgb.Conn, Screen uint32, Drawable uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 9 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	xgb.Put32(buf[b:], Drawable)
+	b += 4
+
+	return buf
+}
+
+// OpenConnectionCookie is a cookie used only for OpenConnection requests.
+type OpenConnectionCookie struct {
+	*xgb.Cookie
+}
+
+// OpenConnection sends a checked request.
+// If an error occurs, it will be returned with the reply by calling OpenConnectionCookie.Reply()
+func OpenConnection(c *xgb.Conn, Screen uint32) OpenConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'OpenConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(openConnectionRequest(c, Screen), cookie)
+	return OpenConnectionCookie{cookie}
+}
+
+// OpenConnectionUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func OpenConnectionUnchecked(c *xgb.Conn, Screen uint32) OpenConnectionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'OpenConnection' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(openConnectionRequest(c, Screen), cookie)
+	return OpenConnectionCookie{cookie}
+}
+
+// OpenConnectionReply represents the data returned from a OpenConnection request.
+type OpenConnectionReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	SareaHandleLow  uint32
+	SareaHandleHigh uint32
+	BusIdLen        uint32
+	// padding: 12 bytes
+	BusId string // size: xgb.Pad((int(BusIdLen) * 1))
+}
+
+// Reply blocks and returns the reply data for a OpenConnection request.
+func (cook OpenConnectionCookie) Reply() (*OpenConnectionReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return openConnectionReply(buf), nil
+}
+
+// openConnectionReply reads a byte slice into a OpenConnectionReply value.
+func openConnectionReply(buf []byte) *OpenConnectionReply {
+	v := new(OpenConnectionReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.SareaHandleLow = xgb.Get32(buf[b:])
+	b += 4
+
+	v.SareaHandleHigh = xgb.Get32(buf[b:])
+	b += 4
+
+	v.BusIdLen = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 12 // padding
+
+	{
+		byteString := make([]byte, v.BusIdLen)
+		copy(byteString[:v.BusIdLen], buf[b:])
+		v.BusId = string(byteString)
+		b += int(v.BusIdLen)
+	}
+
+	return v
+}
+
+// Write request to wire for OpenConnection
+// openConnectionRequest writes a OpenConnection request to a byte slice.
+func openConnectionRequest(c *xgb.Conn, Screen uint32) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 2 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	return buf
+}
+
+// QueryDirectRenderingCapableCookie is a cookie used only for QueryDirectRenderingCapable requests.
+type QueryDirectRenderingCapableCookie struct {
+	*xgb.Cookie
+}
+
+// QueryDirectRenderingCapable sends a checked request.
+// If an error occurs, it will be returned with the reply by calling QueryDirectRenderingCapableCookie.Reply()
+func QueryDirectRenderingCapable(c *xgb.Conn, Screen uint32) QueryDirectRenderingCapableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'QueryDirectRenderingCapable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryDirectRenderingCapableRequest(c, Screen), cookie)
+	return QueryDirectRenderingCapableCookie{cookie}
+}
+
+// QueryDirectRenderingCapableUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func QueryDirectRenderingCapableUnchecked(c *xgb.Conn, Screen uint32) QueryDirectRenderingCapableCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'QueryDirectRenderingCapable' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryDirectRenderingCapableRequest(c, Screen), cookie)
+	return QueryDirectRenderingCapableCookie{cookie}
+}
+
+// QueryDirectRenderingCapableReply represents the data returned from a QueryDirectRenderingCapable request.
+type QueryDirectRenderingCapableReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	IsCapable bool
+}
+
+// Reply blocks and returns the reply data for a QueryDirectRenderingCapable request.
+func (cook QueryDirectRenderingCapableCookie) Reply() (*QueryDirectRenderingCapableReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return queryDirectRenderingCapableReply(buf), nil
+}
+
+// queryDirectRenderingCapableReply reads a byte slice into a QueryDirectRenderingCapableReply value.
+func queryDirectRenderingCapableReply(buf []byte) *QueryDirectRenderingCapableReply {
+	v := new(QueryDirectRenderingCapableReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	if buf[b] == 1 {
+		v.IsCapable = true
+	} else {
+		v.IsCapable = false
+	}
+	b += 1
+
+	return v
+}
+
+// Write request to wire for QueryDirectRenderingCapable
+// queryDirectRenderingCapableRequest writes a QueryDirectRenderingCapable request to a byte slice.
+func queryDirectRenderingCapableRequest(c *xgb.Conn, Screen uint32) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 1 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], Screen)
+	b += 4
+
+	return buf
+}
+
+// QueryVersionCookie is a cookie used only for QueryVersion requests.
+type QueryVersionCookie struct {
+	*xgb.Cookie
+}
+
+// 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) QueryVersionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryVersionRequest(c), cookie)
+	return QueryVersionCookie{cookie}
+}
+
+// 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) QueryVersionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["XFree86-DRI"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryVersionRequest(c), cookie)
+	return QueryVersionCookie{cookie}
+}
+
+// QueryVersionReply represents the data returned from a QueryVersion request.
+type QueryVersionReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	DriMajorVersion uint16
+	DriMinorVersion uint16
+	DriMinorPatch   uint32
+}
+
+// Reply blocks and returns the reply data for a QueryVersion request.
+func (cook QueryVersionCookie) Reply() (*QueryVersionReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return queryVersionReply(buf), nil
+}
+
+// queryVersionReply reads a byte slice into a QueryVersionReply value.
+func queryVersionReply(buf []byte) *QueryVersionReply {
+	v := new(QueryVersionReply)
+	b := 1 // skip reply determinant
+
+	b += 1 // padding
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Length = xgb.Get32(buf[b:]) // 4-byte units
+	b += 4
+
+	v.DriMajorVersion = xgb.Get16(buf[b:])
+	b += 2
+
+	v.DriMinorVersion = xgb.Get16(buf[b:])
+	b += 2
+
+	v.DriMinorPatch = xgb.Get32(buf[b:])
+	b += 4
+
+	return v
+}
+
+// Write request to wire for QueryVersion
+// queryVersionRequest writes a QueryVersion request to a byte slice.
+func queryVersionRequest(c *xgb.Conn) []byte {
+	size := 4
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["XFree86-DRI"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 0 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	return buf
+}