From 3906399e7c2a40fbaf355de572cf50a314083f64 Mon Sep 17 00:00:00 2001
From: aarzilli <alessandro.arzilli@gmail.com>
Date: Wed, 18 Jan 2017 10:52:16 +0100
Subject: [PATCH] Regenerated from xcb-proto 1.12

---
 nexgb/glx/glx.go                 | 113 ++++++-
 nexgb/randr/randr.go             | 487 ++++++++++++++++++++++++++-----
 nexgb/record/record.go           |  20 +-
 nexgb/render/render.go           |  58 ++--
 nexgb/screensaver/screensaver.go |   3 +-
 nexgb/xf86dri/xf86dri.go         |   5 +-
 nexgb/xf86vidmode/xf86vidmode.go |  27 +-
 nexgb/xfixes/xfixes.go           |  17 +-
 nexgb/xgbgen/field.go            |  15 +-
 nexgb/xprint/xprint.go           |  57 ++--
 nexgb/xproto/xproto.go           |  69 ++---
 nexgb/xselinux/xselinux.go       |  16 +-
 nexgb/xv/xv.go                   |  44 +--
 13 files changed, 667 insertions(+), 264 deletions(-)

diff --git a/nexgb/glx/glx.go b/nexgb/glx/glx.go
index cf72d9a..0ecc3b5 100644
--- a/nexgb/glx/glx.go
+++ b/nexgb/glx/glx.go
@@ -3165,14 +3165,14 @@ func getClipPlaneReply(buf []byte) *GetClipPlaneReply {
 	v := new(GetClipPlaneReply)
 	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
 
+	b += 1 // padding
+
 	b += 24 // padding
 
 	v.Data = make([]Float64, (int(v.Length) / 2))
@@ -4096,14 +4096,14 @@ func getDoublevReply(buf []byte) *GetDoublevReply {
 	v := new(GetDoublevReply)
 	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
 
+	b += 1 // padding
+
 	b += 4 // padding
 
 	v.N = xgb.Get32(buf[b:])
@@ -5340,14 +5340,14 @@ func getMapdvReply(buf []byte) *GetMapdvReply {
 	v := new(GetMapdvReply)
 	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
 
+	b += 1 // padding
+
 	b += 4 // padding
 
 	v.N = xgb.Get32(buf[b:])
@@ -7548,14 +7548,14 @@ func getTexGendvReply(buf []byte) *GetTexGendvReply {
 	v := new(GetTexGendvReply)
 	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
 
+	b += 1 // padding
+
 	b += 4 // padding
 
 	v.N = xgb.Get32(buf[b:])
@@ -8654,6 +8654,103 @@ func isDirectRequest(c *xgb.Conn, Context Context) []byte {
 	return buf
 }
 
+// IsEnabledCookie is a cookie used only for IsEnabled requests.
+type IsEnabledCookie struct {
+	*xgb.Cookie
+}
+
+// IsEnabled sends a checked request.
+// If an error occurs, it will be returned with the reply by calling IsEnabledCookie.Reply()
+func IsEnabled(c *xgb.Conn, ContextTag ContextTag, Capability uint32) IsEnabledCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsEnabled' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(isEnabledRequest(c, ContextTag, Capability), cookie)
+	return IsEnabledCookie{cookie}
+}
+
+// IsEnabledUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func IsEnabledUnchecked(c *xgb.Conn, ContextTag ContextTag, Capability uint32) IsEnabledCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["GLX"]; !ok {
+		panic("Cannot issue request 'IsEnabled' using the uninitialized extension 'GLX'. glx.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(isEnabledRequest(c, ContextTag, Capability), cookie)
+	return IsEnabledCookie{cookie}
+}
+
+// IsEnabledReply represents the data returned from a IsEnabled request.
+type IsEnabledReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	RetVal Bool32
+}
+
+// Reply blocks and returns the reply data for a IsEnabled request.
+func (cook IsEnabledCookie) Reply() (*IsEnabledReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return isEnabledReply(buf), nil
+}
+
+// isEnabledReply reads a byte slice into a IsEnabledReply value.
+func isEnabledReply(buf []byte) *IsEnabledReply {
+	v := new(IsEnabledReply)
+	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.RetVal = Bool32(xgb.Get32(buf[b:]))
+	b += 4
+
+	return v
+}
+
+// Write request to wire for IsEnabled
+// isEnabledRequest writes a IsEnabled request to a byte slice.
+func isEnabledRequest(c *xgb.Conn, ContextTag ContextTag, Capability uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["GLX"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 140 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], uint32(ContextTag))
+	b += 4
+
+	xgb.Put32(buf[b:], Capability)
+	b += 4
+
+	return buf
+}
+
 // IsListCookie is a cookie used only for IsList requests.
 type IsListCookie struct {
 	*xgb.Cookie
diff --git a/nexgb/randr/randr.go b/nexgb/randr/randr.go
index 021c011..d280e95 100644
--- a/nexgb/randr/randr.go
+++ b/nexgb/randr/randr.go
@@ -503,6 +503,153 @@ func ModeInfoListBytes(buf []byte, list []ModeInfo) int {
 	return xgb.Pad(b)
 }
 
+type MonitorInfo struct {
+	Name                xproto.Atom
+	Primary             bool
+	Automatic           bool
+	NOutput             uint16
+	X                   int16
+	Y                   int16
+	Width               uint16
+	Height              uint16
+	WidthInMillimeters  uint32
+	HeightInMillimeters uint32
+	Outputs             []Output // size: xgb.Pad((int(NOutput) * 4))
+}
+
+// MonitorInfoRead reads a byte slice into a MonitorInfo value.
+func MonitorInfoRead(buf []byte, v *MonitorInfo) int {
+	b := 0
+
+	v.Name = xproto.Atom(xgb.Get32(buf[b:]))
+	b += 4
+
+	if buf[b] == 1 {
+		v.Primary = true
+	} else {
+		v.Primary = false
+	}
+	b += 1
+
+	if buf[b] == 1 {
+		v.Automatic = true
+	} else {
+		v.Automatic = false
+	}
+	b += 1
+
+	v.NOutput = xgb.Get16(buf[b:])
+	b += 2
+
+	v.X = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.Y = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.Width = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Height = xgb.Get16(buf[b:])
+	b += 2
+
+	v.WidthInMillimeters = xgb.Get32(buf[b:])
+	b += 4
+
+	v.HeightInMillimeters = xgb.Get32(buf[b:])
+	b += 4
+
+	v.Outputs = make([]Output, v.NOutput)
+	for i := 0; i < int(v.NOutput); i++ {
+		v.Outputs[i] = Output(xgb.Get32(buf[b:]))
+		b += 4
+	}
+
+	return b
+}
+
+// MonitorInfoReadList reads a byte slice into a list of MonitorInfo values.
+func MonitorInfoReadList(buf []byte, dest []MonitorInfo) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = MonitorInfo{}
+		b += MonitorInfoRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a MonitorInfo value to a byte slice.
+func (v MonitorInfo) Bytes() []byte {
+	buf := make([]byte, (24 + xgb.Pad((int(v.NOutput) * 4))))
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Name))
+	b += 4
+
+	if v.Primary {
+		buf[b] = 1
+	} else {
+		buf[b] = 0
+	}
+	b += 1
+
+	if v.Automatic {
+		buf[b] = 1
+	} else {
+		buf[b] = 0
+	}
+	b += 1
+
+	xgb.Put16(buf[b:], v.NOutput)
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.X))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.Y))
+	b += 2
+
+	xgb.Put16(buf[b:], v.Width)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Height)
+	b += 2
+
+	xgb.Put32(buf[b:], v.WidthInMillimeters)
+	b += 4
+
+	xgb.Put32(buf[b:], v.HeightInMillimeters)
+	b += 4
+
+	for i := 0; i < int(v.NOutput); i++ {
+		xgb.Put32(buf[b:], uint32(v.Outputs[i]))
+		b += 4
+	}
+
+	return buf[:b]
+}
+
+// MonitorInfoListBytes writes a list of MonitorInfo values to a byte slice.
+func MonitorInfoListBytes(buf []byte, list []MonitorInfo) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+// MonitorInfoListSize computes the size (bytes) of a list of MonitorInfo values.
+func MonitorInfoListSize(list []MonitorInfo) int {
+	size := 0
+	for _, item := range list {
+		size += (24 + xgb.Pad((int(item.NOutput) * 4)))
+	}
+	return size
+}
+
 const (
 	NotifyCrtcChange       = 0
 	NotifyOutputChange     = 1
@@ -2173,6 +2320,70 @@ func createModeRequest(c *xgb.Conn, Window xproto.Window, ModeInfo ModeInfo, Nam
 	return buf
 }
 
+// DeleteMonitorCookie is a cookie used only for DeleteMonitor requests.
+type DeleteMonitorCookie struct {
+	*xgb.Cookie
+}
+
+// DeleteMonitor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func DeleteMonitor(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) DeleteMonitorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'DeleteMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(deleteMonitorRequest(c, Window, Name), cookie)
+	return DeleteMonitorCookie{cookie}
+}
+
+// DeleteMonitorChecked sends a checked request.
+// If an error occurs, it can be retrieved using DeleteMonitorCookie.Check()
+func DeleteMonitorChecked(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) DeleteMonitorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'DeleteMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(deleteMonitorRequest(c, Window, Name), cookie)
+	return DeleteMonitorCookie{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 DeleteMonitorCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for DeleteMonitor
+// deleteMonitorRequest writes a DeleteMonitor request to a byte slice.
+func deleteMonitorRequest(c *xgb.Conn, Window xproto.Window, Name xproto.Atom) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RANDR"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 44 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], uint32(Window))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Name))
+	b += 4
+
+	return buf
+}
+
 // DeleteOutputModeCookie is a cookie used only for DeleteOutputMode requests.
 type DeleteOutputModeCookie struct {
 	*xgb.Cookie
@@ -2464,11 +2675,9 @@ type GetCrtcGammaReply struct {
 	// padding: 1 bytes
 	Size uint16
 	// padding: 22 bytes
-	Red []uint16 // size: xgb.Pad((int(Size) * 2))
-	// alignment gap to multiple of 2
+	Red   []uint16 // size: xgb.Pad((int(Size) * 2))
 	Green []uint16 // size: xgb.Pad((int(Size) * 2))
-	// alignment gap to multiple of 2
-	Blue []uint16 // size: xgb.Pad((int(Size) * 2))
+	Blue  []uint16 // size: xgb.Pad((int(Size) * 2))
 }
 
 // Reply blocks and returns the reply data for a GetCrtcGamma request.
@@ -2507,16 +2716,12 @@ func getCrtcGammaReply(buf []byte) *GetCrtcGammaReply {
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	v.Green = make([]uint16, v.Size)
 	for i := 0; i < int(v.Size); i++ {
 		v.Green[i] = xgb.Get16(buf[b:])
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	v.Blue = make([]uint16, v.Size)
 	for i := 0; i < int(v.Size); i++ {
 		v.Blue[i] = xgb.Get16(buf[b:])
@@ -2694,8 +2899,7 @@ type GetCrtcInfoReply struct {
 	NumOutputs         uint16
 	NumPossibleOutputs uint16
 	Outputs            []Output // size: xgb.Pad((int(NumOutputs) * 4))
-	// alignment gap to multiple of 4
-	Possible []Output // size: xgb.Pad((int(NumPossibleOutputs) * 4))
+	Possible           []Output // size: xgb.Pad((int(NumPossibleOutputs) * 4))
 }
 
 // Reply blocks and returns the reply data for a GetCrtcInfo request.
@@ -2760,8 +2964,6 @@ func getCrtcInfoReply(buf []byte) *GetCrtcInfoReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Possible = make([]Output, v.NumPossibleOutputs)
 	for i := 0; i < int(v.NumPossibleOutputs); i++ {
 		v.Possible[i] = Output(xgb.Get32(buf[b:]))
@@ -2962,6 +3164,122 @@ func getCrtcTransformRequest(c *xgb.Conn, Crtc Crtc) []byte {
 	return buf
 }
 
+// GetMonitorsCookie is a cookie used only for GetMonitors requests.
+type GetMonitorsCookie struct {
+	*xgb.Cookie
+}
+
+// GetMonitors sends a checked request.
+// If an error occurs, it will be returned with the reply by calling GetMonitorsCookie.Reply()
+func GetMonitors(c *xgb.Conn, Window xproto.Window, GetActive bool) GetMonitorsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'GetMonitors' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(getMonitorsRequest(c, Window, GetActive), cookie)
+	return GetMonitorsCookie{cookie}
+}
+
+// GetMonitorsUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func GetMonitorsUnchecked(c *xgb.Conn, Window xproto.Window, GetActive bool) GetMonitorsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'GetMonitors' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(getMonitorsRequest(c, Window, GetActive), cookie)
+	return GetMonitorsCookie{cookie}
+}
+
+// GetMonitorsReply represents the data returned from a GetMonitors request.
+type GetMonitorsReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	Timestamp xproto.Timestamp
+	NMonitors uint32
+	NOutputs  uint32
+	// padding: 12 bytes
+	Monitors []MonitorInfo // size: MonitorInfoListSize(Monitors)
+}
+
+// Reply blocks and returns the reply data for a GetMonitors request.
+func (cook GetMonitorsCookie) Reply() (*GetMonitorsReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return getMonitorsReply(buf), nil
+}
+
+// getMonitorsReply reads a byte slice into a GetMonitorsReply value.
+func getMonitorsReply(buf []byte) *GetMonitorsReply {
+	v := new(GetMonitorsReply)
+	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.Timestamp = xproto.Timestamp(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.NMonitors = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NOutputs = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 12 // padding
+
+	v.Monitors = make([]MonitorInfo, v.NMonitors)
+	b += MonitorInfoReadList(buf[b:], v.Monitors)
+
+	return v
+}
+
+// Write request to wire for GetMonitors
+// getMonitorsRequest writes a GetMonitors request to a byte slice.
+func getMonitorsRequest(c *xgb.Conn, Window xproto.Window, GetActive bool) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RANDR"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 42 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], uint32(Window))
+	b += 4
+
+	if GetActive {
+		buf[b] = 1
+	} else {
+		buf[b] = 0
+	}
+	b += 1
+
+	return buf
+}
+
 // GetOutputInfoCookie is a cookie used only for GetOutputInfo requests.
 type GetOutputInfoCookie struct {
 	*xgb.Cookie
@@ -3009,12 +3327,10 @@ type GetOutputInfoReply struct {
 	NumPreferred  uint16
 	NumClones     uint16
 	NameLen       uint16
-	Crtcs         []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
-	// alignment gap to multiple of 4
-	Modes []Mode // size: xgb.Pad((int(NumModes) * 4))
-	// alignment gap to multiple of 4
-	Clones []Output // size: xgb.Pad((int(NumClones) * 4))
-	Name   []byte   // size: xgb.Pad((int(NameLen) * 1))
+	Crtcs         []Crtc   // size: xgb.Pad((int(NumCrtcs) * 4))
+	Modes         []Mode   // size: xgb.Pad((int(NumModes) * 4))
+	Clones        []Output // size: xgb.Pad((int(NumClones) * 4))
+	Name          []byte   // size: xgb.Pad((int(NameLen) * 1))
 }
 
 // Reply blocks and returns the reply data for a GetOutputInfo request.
@@ -3082,16 +3398,12 @@ func getOutputInfoReply(buf []byte) *GetOutputInfoReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Modes = make([]Mode, v.NumModes)
 	for i := 0; i < int(v.NumModes); i++ {
 		v.Modes[i] = Mode(xgb.Get32(buf[b:]))
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Clones = make([]Output, v.NumClones)
 	for i := 0; i < int(v.NumClones); i++ {
 		v.Clones[i] = Output(xgb.Get32(buf[b:]))
@@ -3551,14 +3863,11 @@ type GetProviderInfoReply struct {
 	NumAssociatedProviders uint16
 	NameLen                uint16
 	// padding: 8 bytes
-	Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
-	// alignment gap to multiple of 4
-	Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
-	// alignment gap to multiple of 4
-	AssociatedProviders []Provider // size: xgb.Pad((int(NumAssociatedProviders) * 4))
-	// alignment gap to multiple of 4
-	AssociatedCapability []uint32 // size: xgb.Pad((int(NumAssociatedProviders) * 4))
-	Name                 string   // size: xgb.Pad((int(NameLen) * 1))
+	Crtcs                []Crtc     // size: xgb.Pad((int(NumCrtcs) * 4))
+	Outputs              []Output   // size: xgb.Pad((int(NumOutputs) * 4))
+	AssociatedProviders  []Provider // size: xgb.Pad((int(NumAssociatedProviders) * 4))
+	AssociatedCapability []uint32   // size: xgb.Pad((int(NumAssociatedProviders) * 4))
+	Name                 string     // size: xgb.Pad((int(NameLen) * 1))
 }
 
 // Reply blocks and returns the reply data for a GetProviderInfo request.
@@ -3613,24 +3922,18 @@ func getProviderInfoReply(buf []byte) *GetProviderInfoReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Outputs = make([]Output, v.NumOutputs)
 	for i := 0; i < int(v.NumOutputs); i++ {
 		v.Outputs[i] = Output(xgb.Get32(buf[b:]))
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.AssociatedProviders = make([]Provider, v.NumAssociatedProviders)
 	for i := 0; i < int(v.NumAssociatedProviders); i++ {
 		v.AssociatedProviders[i] = Provider(xgb.Get32(buf[b:]))
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.AssociatedCapability = make([]uint32, v.NumAssociatedProviders)
 	for i := 0; i < int(v.NumAssociatedProviders); i++ {
 		v.AssociatedCapability[i] = xgb.Get32(buf[b:])
@@ -3966,8 +4269,7 @@ type GetScreenInfoReply struct {
 	Rate            uint16
 	NInfo           uint16
 	// padding: 2 bytes
-	Sizes []ScreenSize // size: xgb.Pad((int(NSizes) * 8))
-	// alignment gap to multiple of 2
+	Sizes []ScreenSize   // size: xgb.Pad((int(NSizes) * 8))
 	Rates []RefreshRates // size: RefreshRatesListSize(Rates)
 }
 
@@ -4026,8 +4328,6 @@ func getScreenInfoReply(buf []byte) *GetScreenInfoReply {
 	v.Sizes = make([]ScreenSize, v.NSizes)
 	b += ScreenSizeReadList(buf[b:], v.Sizes)
 
-	b = (b + 1) & ^1 // alignment gap
-
 	v.Rates = make([]RefreshRates, (int(v.NInfo) - int(v.NSizes)))
 	b += RefreshRatesReadList(buf[b:], v.Rates)
 
@@ -4101,12 +4401,10 @@ type GetScreenResourcesReply struct {
 	NumModes        uint16
 	NamesLen        uint16
 	// padding: 8 bytes
-	Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
-	// alignment gap to multiple of 4
-	Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
-	// alignment gap to multiple of 4
-	Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
-	Names []byte     // size: xgb.Pad((int(NamesLen) * 1))
+	Crtcs   []Crtc     // size: xgb.Pad((int(NumCrtcs) * 4))
+	Outputs []Output   // size: xgb.Pad((int(NumOutputs) * 4))
+	Modes   []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
+	Names   []byte     // size: xgb.Pad((int(NamesLen) * 1))
 }
 
 // Reply blocks and returns the reply data for a GetScreenResources request.
@@ -4160,16 +4458,12 @@ func getScreenResourcesReply(buf []byte) *GetScreenResourcesReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Outputs = make([]Output, v.NumOutputs)
 	for i := 0; i < int(v.NumOutputs); i++ {
 		v.Outputs[i] = Output(xgb.Get32(buf[b:]))
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Modes = make([]ModeInfo, v.NumModes)
 	b += ModeInfoReadList(buf[b:], v.Modes)
 
@@ -4247,12 +4541,10 @@ type GetScreenResourcesCurrentReply struct {
 	NumModes        uint16
 	NamesLen        uint16
 	// padding: 8 bytes
-	Crtcs []Crtc // size: xgb.Pad((int(NumCrtcs) * 4))
-	// alignment gap to multiple of 4
-	Outputs []Output // size: xgb.Pad((int(NumOutputs) * 4))
-	// alignment gap to multiple of 4
-	Modes []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
-	Names []byte     // size: xgb.Pad((int(NamesLen) * 1))
+	Crtcs   []Crtc     // size: xgb.Pad((int(NumCrtcs) * 4))
+	Outputs []Output   // size: xgb.Pad((int(NumOutputs) * 4))
+	Modes   []ModeInfo // size: xgb.Pad((int(NumModes) * 32))
+	Names   []byte     // size: xgb.Pad((int(NamesLen) * 1))
 }
 
 // Reply blocks and returns the reply data for a GetScreenResourcesCurrent request.
@@ -4306,16 +4598,12 @@ func getScreenResourcesCurrentReply(buf []byte) *GetScreenResourcesCurrentReply
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Outputs = make([]Output, v.NumOutputs)
 	for i := 0; i < int(v.NumOutputs); i++ {
 		v.Outputs[i] = Output(xgb.Get32(buf[b:]))
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Modes = make([]ModeInfo, v.NumModes)
 	b += ModeInfoReadList(buf[b:], v.Modes)
 
@@ -5254,7 +5542,7 @@ func (cook SetCrtcGammaCookie) Check() error {
 // Write request to wire for SetCrtcGamma
 // setCrtcGammaRequest writes a SetCrtcGamma request to a byte slice.
 func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Green []uint16, Blue []uint16) []byte {
-	size := xgb.Pad((((((12 + xgb.Pad((int(Size) * 2))) + 2) + xgb.Pad((int(Size) * 2))) + 2) + xgb.Pad((int(Size) * 2))))
+	size := xgb.Pad((((12 + xgb.Pad((int(Size) * 2))) + xgb.Pad((int(Size) * 2))) + xgb.Pad((int(Size) * 2))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -5266,7 +5554,7 @@ func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Gree
 	buf[b] = 24 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Crtc))
@@ -5282,23 +5570,17 @@ func setCrtcGammaRequest(c *xgb.Conn, Crtc Crtc, Size uint16, Red []uint16, Gree
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	for i := 0; i < int(Size); i++ {
 		xgb.Put16(buf[b:], Green[i])
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	for i := 0; i < int(Size); i++ {
 		xgb.Put16(buf[b:], Blue[i])
 		b += 2
 	}
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // SetCrtcTransformCookie is a cookie used only for SetCrtcTransform requests.
@@ -5385,6 +5667,73 @@ func setCrtcTransformRequest(c *xgb.Conn, Crtc Crtc, Transform render.Transform,
 	return buf[:b]
 }
 
+// SetMonitorCookie is a cookie used only for SetMonitor requests.
+type SetMonitorCookie struct {
+	*xgb.Cookie
+}
+
+// SetMonitor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func SetMonitor(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) SetMonitorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'SetMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(setMonitorRequest(c, Window, Monitorinfo), cookie)
+	return SetMonitorCookie{cookie}
+}
+
+// SetMonitorChecked sends a checked request.
+// If an error occurs, it can be retrieved using SetMonitorCookie.Check()
+func SetMonitorChecked(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) SetMonitorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RANDR"]; !ok {
+		panic("Cannot issue request 'SetMonitor' using the uninitialized extension 'RANDR'. randr.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(setMonitorRequest(c, Window, Monitorinfo), cookie)
+	return SetMonitorCookie{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 SetMonitorCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for SetMonitor
+// setMonitorRequest writes a SetMonitor request to a byte slice.
+func setMonitorRequest(c *xgb.Conn, Window xproto.Window, Monitorinfo MonitorInfo) []byte {
+	size := xgb.Pad((8 + (24 + xgb.Pad((int(Monitorinfo.NOutput) * 4)))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RANDR"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 43 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	xgb.Put32(buf[b:], uint32(Window))
+	b += 4
+
+	{
+		structBytes := Monitorinfo.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf
+}
+
 // SetOutputPrimaryCookie is a cookie used only for SetOutputPrimary requests.
 type SetOutputPrimaryCookie struct {
 	*xgb.Cookie
diff --git a/nexgb/record/record.go b/nexgb/record/record.go
index 5469170..1cb022b 100644
--- a/nexgb/record/record.go
+++ b/nexgb/record/record.go
@@ -554,7 +554,7 @@ func (cook CreateContextCookie) Check() error {
 // Write request to wire for CreateContext
 // createContextRequest writes a CreateContext request to a byte slice.
 func createContextRequest(c *xgb.Conn, Context Context, ElementHeader ElementHeader, NumClientSpecs uint32, NumRanges uint32, ClientSpecs []ClientSpec, Ranges []Range) []byte {
-	size := xgb.Pad((((20 + xgb.Pad((int(NumClientSpecs) * 4))) + 4) + xgb.Pad((int(NumRanges) * 24))))
+	size := xgb.Pad(((20 + xgb.Pad((int(NumClientSpecs) * 4))) + xgb.Pad((int(NumRanges) * 24))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -566,7 +566,7 @@ func createContextRequest(c *xgb.Conn, Context Context, ElementHeader ElementHea
 	buf[b] = 1 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Context))
@@ -588,13 +588,9 @@ func createContextRequest(c *xgb.Conn, Context Context, ElementHeader ElementHea
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += RangeListBytes(buf[b:], Ranges)
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // DisableContextCookie is a cookie used only for DisableContext requests.
@@ -1099,7 +1095,7 @@ func (cook RegisterClientsCookie) Check() error {
 // Write request to wire for RegisterClients
 // registerClientsRequest writes a RegisterClients request to a byte slice.
 func registerClientsRequest(c *xgb.Conn, Context Context, ElementHeader ElementHeader, NumClientSpecs uint32, NumRanges uint32, ClientSpecs []ClientSpec, Ranges []Range) []byte {
-	size := xgb.Pad((((20 + xgb.Pad((int(NumClientSpecs) * 4))) + 4) + xgb.Pad((int(NumRanges) * 24))))
+	size := xgb.Pad(((20 + xgb.Pad((int(NumClientSpecs) * 4))) + xgb.Pad((int(NumRanges) * 24))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -1111,7 +1107,7 @@ func registerClientsRequest(c *xgb.Conn, Context Context, ElementHeader ElementH
 	buf[b] = 2 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Context))
@@ -1133,13 +1129,9 @@ func registerClientsRequest(c *xgb.Conn, Context Context, ElementHeader ElementH
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += RangeListBytes(buf[b:], Ranges)
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // UnregisterClientsCookie is a cookie used only for UnregisterClients requests.
diff --git a/nexgb/render/render.go b/nexgb/render/render.go
index e15bd67..01ea481 100644
--- a/nexgb/render/render.go
+++ b/nexgb/render/render.go
@@ -1613,7 +1613,7 @@ func (cook AddGlyphsCookie) Check() error {
 // Write request to wire for AddGlyphs
 // addGlyphsRequest writes a AddGlyphs request to a byte slice.
 func addGlyphsRequest(c *xgb.Conn, Glyphset Glyphset, GlyphsLen uint32, Glyphids []uint32, Glyphs []Glyphinfo, Data []byte) []byte {
-	size := xgb.Pad(((((12 + xgb.Pad((int(GlyphsLen) * 4))) + 4) + xgb.Pad((int(GlyphsLen) * 12))) + xgb.Pad((len(Data) * 1))))
+	size := xgb.Pad((((12 + xgb.Pad((int(GlyphsLen) * 4))) + xgb.Pad((int(GlyphsLen) * 12))) + xgb.Pad((len(Data) * 1))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -1625,7 +1625,7 @@ func addGlyphsRequest(c *xgb.Conn, Glyphset Glyphset, GlyphsLen uint32, Glyphids
 	buf[b] = 20 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Glyphset))
@@ -1639,16 +1639,12 @@ func addGlyphsRequest(c *xgb.Conn, Glyphset Glyphset, GlyphsLen uint32, Glyphids
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += GlyphinfoListBytes(buf[b:], Glyphs)
 
 	copy(buf[b:], Data[:len(Data)])
 	b += int(len(Data))
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // AddTrapsCookie is a cookie used only for AddTraps requests.
@@ -1760,7 +1756,7 @@ func (cook ChangePictureCookie) Check() error {
 // Write request to wire for ChangePicture
 // changePictureRequest writes a ChangePicture request to a byte slice.
 func changePictureRequest(c *xgb.Conn, Picture Picture, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((8 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((12 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -1780,6 +1776,7 @@ func changePictureRequest(c *xgb.Conn, Picture Picture, ValueMask uint32, ValueL
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -2240,7 +2237,7 @@ func (cook CreateConicalGradientCookie) Check() error {
 // Write request to wire for CreateConicalGradient
 // createConicalGradientRequest writes a CreateConicalGradient request to a byte slice.
 func createConicalGradientRequest(c *xgb.Conn, Picture Picture, Center Pointfix, Angle Fixed, NumStops uint32, Stops []Fixed, Colors []Color) []byte {
-	size := xgb.Pad((((24 + xgb.Pad((int(NumStops) * 4))) + 4) + xgb.Pad((int(NumStops) * 8))))
+	size := xgb.Pad(((24 + xgb.Pad((int(NumStops) * 4))) + xgb.Pad((int(NumStops) * 8))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -2252,7 +2249,7 @@ func createConicalGradientRequest(c *xgb.Conn, Picture Picture, Center Pointfix,
 	buf[b] = 36 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Picture))
@@ -2275,13 +2272,9 @@ func createConicalGradientRequest(c *xgb.Conn, Picture Picture, Center Pointfix,
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += ColorListBytes(buf[b:], Colors)
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // CreateCursorCookie is a cookie used only for CreateCursor requests.
@@ -2458,7 +2451,7 @@ func (cook CreateLinearGradientCookie) Check() error {
 // Write request to wire for CreateLinearGradient
 // createLinearGradientRequest writes a CreateLinearGradient request to a byte slice.
 func createLinearGradientRequest(c *xgb.Conn, Picture Picture, P1 Pointfix, P2 Pointfix, NumStops uint32, Stops []Fixed, Colors []Color) []byte {
-	size := xgb.Pad((((28 + xgb.Pad((int(NumStops) * 4))) + 4) + xgb.Pad((int(NumStops) * 8))))
+	size := xgb.Pad(((28 + xgb.Pad((int(NumStops) * 4))) + xgb.Pad((int(NumStops) * 8))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -2470,7 +2463,7 @@ func createLinearGradientRequest(c *xgb.Conn, Picture Picture, P1 Pointfix, P2 P
 	buf[b] = 34 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Picture))
@@ -2496,13 +2489,9 @@ func createLinearGradientRequest(c *xgb.Conn, Picture Picture, P1 Pointfix, P2 P
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += ColorListBytes(buf[b:], Colors)
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // CreatePictureCookie is a cookie used only for CreatePicture requests.
@@ -2545,7 +2534,7 @@ func (cook CreatePictureCookie) Check() error {
 // Write request to wire for CreatePicture
 // createPictureRequest writes a CreatePicture request to a byte slice.
 func createPictureRequest(c *xgb.Conn, Pid Picture, Drawable xproto.Drawable, Format Pictformat, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((16 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((20 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -2571,6 +2560,7 @@ func createPictureRequest(c *xgb.Conn, Pid Picture, Drawable xproto.Drawable, Fo
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -2620,7 +2610,7 @@ func (cook CreateRadialGradientCookie) Check() error {
 // Write request to wire for CreateRadialGradient
 // createRadialGradientRequest writes a CreateRadialGradient request to a byte slice.
 func createRadialGradientRequest(c *xgb.Conn, Picture Picture, Inner Pointfix, Outer Pointfix, InnerRadius Fixed, OuterRadius Fixed, NumStops uint32, Stops []Fixed, Colors []Color) []byte {
-	size := xgb.Pad((((36 + xgb.Pad((int(NumStops) * 4))) + 4) + xgb.Pad((int(NumStops) * 8))))
+	size := xgb.Pad(((36 + xgb.Pad((int(NumStops) * 4))) + xgb.Pad((int(NumStops) * 8))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -2632,7 +2622,7 @@ func createRadialGradientRequest(c *xgb.Conn, Picture Picture, Inner Pointfix, O
 	buf[b] = 35 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put32(buf[b:], uint32(Picture))
@@ -2664,13 +2654,9 @@ func createRadialGradientRequest(c *xgb.Conn, Picture Picture, Inner Pointfix, O
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += ColorListBytes(buf[b:], Colors)
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // CreateSolidFillCookie is a cookie used only for CreateSolidFill requests.
@@ -3156,11 +3142,9 @@ type QueryPictFormatsReply struct {
 	NumVisuals  uint32
 	NumSubpixel uint32
 	// padding: 4 bytes
-	Formats []Pictforminfo // size: xgb.Pad((int(NumFormats) * 28))
-	// alignment gap to multiple of 4
-	Screens []Pictscreen // size: PictscreenListSize(Screens)
-	// alignment gap to multiple of 4
-	Subpixels []uint32 // size: xgb.Pad((int(NumSubpixel) * 4))
+	Formats   []Pictforminfo // size: xgb.Pad((int(NumFormats) * 28))
+	Screens   []Pictscreen   // size: PictscreenListSize(Screens)
+	Subpixels []uint32       // size: xgb.Pad((int(NumSubpixel) * 4))
 }
 
 // Reply blocks and returns the reply data for a QueryPictFormats request.
@@ -3208,13 +3192,9 @@ func queryPictFormatsReply(buf []byte) *QueryPictFormatsReply {
 	v.Formats = make([]Pictforminfo, v.NumFormats)
 	b += PictforminfoReadList(buf[b:], v.Formats)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Screens = make([]Pictscreen, v.NumScreens)
 	b += PictscreenReadList(buf[b:], v.Screens)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Subpixels = make([]uint32, v.NumSubpixel)
 	for i := 0; i < int(v.NumSubpixel); i++ {
 		v.Subpixels[i] = xgb.Get32(buf[b:])
diff --git a/nexgb/screensaver/screensaver.go b/nexgb/screensaver/screensaver.go
index 418576c..0e9511f 100644
--- a/nexgb/screensaver/screensaver.go
+++ b/nexgb/screensaver/screensaver.go
@@ -513,7 +513,7 @@ func (cook SetAttributesCookie) Check() error {
 // Write request to wire for SetAttributes
 // setAttributesRequest writes a SetAttributes request to a byte slice.
 func setAttributesRequest(c *xgb.Conn, Drawable xproto.Drawable, X int16, Y int16, Width uint16, Height uint16, BorderWidth uint16, Class byte, Depth byte, Visual xproto.Visualid, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((24 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((28 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -557,6 +557,7 @@ func setAttributesRequest(c *xgb.Conn, Drawable xproto.Drawable, X int16, Y int1
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
diff --git a/nexgb/xf86dri/xf86dri.go b/nexgb/xf86dri/xf86dri.go
index 51c9322..06f49a0 100644
--- a/nexgb/xf86dri/xf86dri.go
+++ b/nexgb/xf86dri/xf86dri.go
@@ -896,8 +896,7 @@ type GetDrawableInfoReply struct {
 	BackY              int16
 	NumBackClipRects   uint32
 	ClipRects          []DrmClipRect // size: xgb.Pad((int(NumClipRects) * 8))
-	// alignment gap to multiple of 4
-	BackClipRects []DrmClipRect // size: xgb.Pad((int(NumBackClipRects) * 8))
+	BackClipRects      []DrmClipRect // size: xgb.Pad((int(NumBackClipRects) * 8))
 }
 
 // Reply blocks and returns the reply data for a GetDrawableInfo request.
@@ -958,8 +957,6 @@ func getDrawableInfoReply(buf []byte) *GetDrawableInfoReply {
 	v.ClipRects = make([]DrmClipRect, v.NumClipRects)
 	b += DrmClipRectReadList(buf[b:], v.ClipRects)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.BackClipRects = make([]DrmClipRect, v.NumBackClipRects)
 	b += DrmClipRectReadList(buf[b:], v.BackClipRects)
 
diff --git a/nexgb/xf86vidmode/xf86vidmode.go b/nexgb/xf86vidmode/xf86vidmode.go
index 2829fd6..22e236f 100644
--- a/nexgb/xf86vidmode/xf86vidmode.go
+++ b/nexgb/xf86vidmode/xf86vidmode.go
@@ -1152,11 +1152,9 @@ type GetGammaRampReply struct {
 	// padding: 1 bytes
 	Size uint16
 	// padding: 22 bytes
-	Red []uint16 // size: xgb.Pad((((int(Size) + 1) & -2) * 2))
-	// alignment gap to multiple of 2
+	Red   []uint16 // size: xgb.Pad((((int(Size) + 1) & -2) * 2))
 	Green []uint16 // size: xgb.Pad((((int(Size) + 1) & -2) * 2))
-	// alignment gap to multiple of 2
-	Blue []uint16 // size: xgb.Pad((((int(Size) + 1) & -2) * 2))
+	Blue  []uint16 // size: xgb.Pad((((int(Size) + 1) & -2) * 2))
 }
 
 // Reply blocks and returns the reply data for a GetGammaRamp request.
@@ -1195,16 +1193,12 @@ func getGammaRampReply(buf []byte) *GetGammaRampReply {
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	v.Green = make([]uint16, ((int(v.Size) + 1) & -2))
 	for i := 0; i < int(((int(v.Size) + 1) & -2)); i++ {
 		v.Green[i] = xgb.Get16(buf[b:])
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	v.Blue = make([]uint16, ((int(v.Size) + 1) & -2))
 	for i := 0; i < int(((int(v.Size) + 1) & -2)); i++ {
 		v.Blue[i] = xgb.Get16(buf[b:])
@@ -1532,8 +1526,7 @@ type GetMonitorReply struct {
 	NumHsync     byte
 	NumVsync     byte
 	// padding: 20 bytes
-	Hsync []Syncrange // size: xgb.Pad((int(NumHsync) * 4))
-	// alignment gap to multiple of 4
+	Hsync        []Syncrange // size: xgb.Pad((int(NumHsync) * 4))
 	Vsync        []Syncrange // size: xgb.Pad((int(NumVsync) * 4))
 	Vendor       string      // size: xgb.Pad((int(VendorLength) * 1))
 	AlignmentPad []byte      // size: xgb.Pad(((((int(VendorLength) + 3) & -4) - int(VendorLength)) * 1))
@@ -1585,8 +1578,6 @@ func getMonitorReply(buf []byte) *GetMonitorReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Vsync = make([]Syncrange, v.NumVsync)
 	for i := 0; i < int(v.NumVsync); i++ {
 		v.Vsync[i] = Syncrange(xgb.Get32(buf[b:]))
@@ -2280,7 +2271,7 @@ func (cook SetGammaRampCookie) Check() error {
 // Write request to wire for SetGammaRamp
 // setGammaRampRequest writes a SetGammaRamp request to a byte slice.
 func setGammaRampRequest(c *xgb.Conn, Screen uint16, Size uint16, Red []uint16, Green []uint16, Blue []uint16) []byte {
-	size := xgb.Pad((((((8 + xgb.Pad((((int(Size) + 1) & -2) * 2))) + 2) + xgb.Pad((((int(Size) + 1) & -2) * 2))) + 2) + xgb.Pad((((int(Size) + 1) & -2) * 2))))
+	size := xgb.Pad((((8 + xgb.Pad((((int(Size) + 1) & -2) * 2))) + xgb.Pad((((int(Size) + 1) & -2) * 2))) + xgb.Pad((((int(Size) + 1) & -2) * 2))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -2292,7 +2283,7 @@ func setGammaRampRequest(c *xgb.Conn, Screen uint16, Size uint16, Red []uint16,
 	buf[b] = 18 // request opcode
 	b += 1
 
-	blen := b
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
 	b += 2
 
 	xgb.Put16(buf[b:], Screen)
@@ -2306,23 +2297,17 @@ func setGammaRampRequest(c *xgb.Conn, Screen uint16, Size uint16, Red []uint16,
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	for i := 0; i < int(((int(Size) + 1) & -2)); i++ {
 		xgb.Put16(buf[b:], Green[i])
 		b += 2
 	}
 
-	b = (b + 1) & ^1 // alignment gap
-
 	for i := 0; i < int(((int(Size) + 1) & -2)); i++ {
 		xgb.Put16(buf[b:], Blue[i])
 		b += 2
 	}
 
-	b = xgb.Pad(b)
-	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
-	return buf[:b]
+	return buf
 }
 
 // SetViewPortCookie is a cookie used only for SetViewPort requests.
diff --git a/nexgb/xfixes/xfixes.go b/nexgb/xfixes/xfixes.go
index 0f9e4b0..440c3fd 100644
--- a/nexgb/xfixes/xfixes.go
+++ b/nexgb/xfixes/xfixes.go
@@ -1524,9 +1524,8 @@ type GetCursorImageAndNameReply struct {
 	CursorAtom   xproto.Atom
 	Nbytes       uint16
 	// padding: 2 bytes
-	Name string // size: xgb.Pad((int(Nbytes) * 1))
-	// alignment gap to multiple of 4
 	CursorImage []uint32 // size: xgb.Pad(((int(Width) * int(Height)) * 4))
+	Name        string   // size: xgb.Pad((int(Nbytes) * 1))
 }
 
 // Reply blocks and returns the reply data for a GetCursorImageAndName request.
@@ -1583,6 +1582,12 @@ func getCursorImageAndNameReply(buf []byte) *GetCursorImageAndNameReply {
 
 	b += 2 // padding
 
+	v.CursorImage = make([]uint32, (int(v.Width) * int(v.Height)))
+	for i := 0; i < int((int(v.Width) * int(v.Height))); i++ {
+		v.CursorImage[i] = xgb.Get32(buf[b:])
+		b += 4
+	}
+
 	{
 		byteString := make([]byte, v.Nbytes)
 		copy(byteString[:v.Nbytes], buf[b:])
@@ -1590,14 +1595,6 @@ func getCursorImageAndNameReply(buf []byte) *GetCursorImageAndNameReply {
 		b += int(v.Nbytes)
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
-	v.CursorImage = make([]uint32, (int(v.Width) * int(v.Height)))
-	for i := 0; i < int((int(v.Width) * int(v.Height))); i++ {
-		v.CursorImage[i] = xgb.Get32(buf[b:])
-		b += 4
-	}
-
 	return v
 }
 
diff --git a/nexgb/xgbgen/field.go b/nexgb/xgbgen/field.go
index 58f54c8..d6957b7 100644
--- a/nexgb/xgbgen/field.go
+++ b/nexgb/xgbgen/field.go
@@ -76,7 +76,7 @@ func (p *PadField) Size() Size {
 type RequiredStartAlign struct {
 }
 
-func (f *RequiredStartAlign) Initialize(p *Protocol) { }
+func (f *RequiredStartAlign) Initialize(p *Protocol) {}
 
 func (f *RequiredStartAlign) SrcName() string {
 	panic("illegal to take source name of a required_start_align field")
@@ -94,10 +94,10 @@ func (f *RequiredStartAlign) Size() Size {
 	return newFixedSize(0, true)
 }
 
-func (f *RequiredStartAlign) Define(c *Context) { }
+func (f *RequiredStartAlign) Define(c *Context) {}
 
-func (f *RequiredStartAlign) Read(c *Context, prefix string) { }
-func (f *RequiredStartAlign) Write(c *Context, prefix string) { }
+func (f *RequiredStartAlign) Read(c *Context, prefix string)  {}
+func (f *RequiredStartAlign) Write(c *Context, prefix string) {}
 
 // SingleField represents most of the fields in an XML protocol description.
 // It corresponds to any single value.
@@ -317,9 +317,9 @@ func (f *ValueField) Initialize(p *Protocol) {
 // SwitchField represents a 'switch' element in the XML protocol description
 // file.
 // Currently we translate this to a slice of uint32 and let the user sort
-// through it. 
+// through it.
 type SwitchField struct {
-	xmlName string
+	xmlName  string
 	Name     string
 	MaskName string
 	Expr     Expression
@@ -342,6 +342,7 @@ func (f *SwitchField) Size() Size {
 	// TODO: size expression used here is not correct unless every element of
 	// the switch is 32 bit long. This assumption holds for xproto but may not
 	// hold for other protocols (xkb?)
+
 	listSize := newExpressionSize(&Function{
 		Name: "xgb.Pad",
 		Expr: &BinaryOp{
@@ -357,7 +358,7 @@ func (f *SwitchField) Size() Size {
 			},
 		},
 	}, true)
-	
+
 	return listSize
 }
 
diff --git a/nexgb/xprint/xprint.go b/nexgb/xprint/xprint.go
index d692aed..330003d 100644
--- a/nexgb/xprint/xprint.go
+++ b/nexgb/xprint/xprint.go
@@ -317,10 +317,12 @@ func NewPcontextId(c *xgb.Conn) (Pcontext, error) {
 }
 
 type Printer struct {
-	NameLen     uint32
-	Name        []String8 // size: xgb.Pad((int(NameLen) * 1))
+	NameLen uint32
+	Name    []String8 // size: xgb.Pad((int(NameLen) * 1))
+	// alignment gap to multiple of 4
 	DescLen     uint32
 	Description []String8 // size: xgb.Pad((int(DescLen) * 1))
+	// alignment gap to multiple of 4
 }
 
 // PrinterRead reads a byte slice into a Printer value.
@@ -336,6 +338,8 @@ func PrinterRead(buf []byte, v *Printer) int {
 		b += 1
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	v.DescLen = xgb.Get32(buf[b:])
 	b += 4
 
@@ -345,6 +349,8 @@ func PrinterRead(buf []byte, v *Printer) int {
 		b += 1
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return b
 }
 
@@ -360,7 +366,7 @@ func PrinterReadList(buf []byte, dest []Printer) int {
 
 // Bytes writes a Printer value to a byte slice.
 func (v Printer) Bytes() []byte {
-	buf := make([]byte, (((4 + xgb.Pad((int(v.NameLen) * 1))) + 4) + xgb.Pad((int(v.DescLen) * 1))))
+	buf := make([]byte, (((((4 + xgb.Pad((int(v.NameLen) * 1))) + 4) + 4) + xgb.Pad((int(v.DescLen) * 1))) + 4))
 	b := 0
 
 	xgb.Put32(buf[b:], v.NameLen)
@@ -371,6 +377,8 @@ func (v Printer) Bytes() []byte {
 		b += 1
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	xgb.Put32(buf[b:], v.DescLen)
 	b += 4
 
@@ -379,6 +387,8 @@ func (v Printer) Bytes() []byte {
 		b += 1
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return buf[:b]
 }
 
@@ -398,7 +408,7 @@ func PrinterListBytes(buf []byte, list []Printer) int {
 func PrinterListSize(list []Printer) int {
 	size := 0
 	for _, item := range list {
-		size += (((4 + xgb.Pad((int(item.NameLen) * 1))) + 4) + xgb.Pad((int(item.DescLen) * 1)))
+		size += (((((4 + xgb.Pad((int(item.NameLen) * 1))) + 4) + 4) + xgb.Pad((int(item.DescLen) * 1))) + 4)
 	}
 	return size
 }
@@ -1644,9 +1654,7 @@ type PrintInputSelectedReply struct {
 	Length   uint32 // number of bytes in this reply
 	// padding: 1 bytes
 	EventMask     uint32
-	EventList     []uint32
 	AllEventsMask uint32
-	AllEventsList []uint32
 }
 
 // Reply blocks and returns the reply data for a PrintInputSelected request.
@@ -1677,23 +1685,9 @@ func printInputSelectedReply(buf []byte) *PrintInputSelectedReply {
 	v.EventMask = xgb.Get32(buf[b:])
 	b += 4
 
-	v.EventList = make([]uint32, xgb.PopCount(int(v.EventMask)))
-	for i := 0; i < xgb.PopCount(int(v.EventMask)); i++ {
-		v.EventList[i] = xgb.Get32(buf[b:])
-		b += 4
-	}
-	b = xgb.Pad(b)
-
 	v.AllEventsMask = xgb.Get32(buf[b:])
 	b += 4
 
-	v.AllEventsList = make([]uint32, xgb.PopCount(int(v.AllEventsMask)))
-	for i := 0; i < xgb.PopCount(int(v.AllEventsMask)); i++ {
-		v.AllEventsList[i] = xgb.Get32(buf[b:])
-		b += 4
-	}
-	b = xgb.Pad(b)
-
 	return v
 }
 
@@ -1761,7 +1755,7 @@ func (cook PrintPutDocumentDataCookie) Check() error {
 // Write request to wire for PrintPutDocumentData
 // printPutDocumentDataRequest writes a PrintPutDocumentData request to a byte slice.
 func printPutDocumentDataRequest(c *xgb.Conn, Drawable xproto.Drawable, LenData uint32, LenFmt uint16, LenOptions uint16, Data []byte, DocFormat []String8, Options []String8) []byte {
-	size := xgb.Pad((((16 + xgb.Pad((int(LenData) * 1))) + xgb.Pad((len(DocFormat) * 1))) + xgb.Pad((len(Options) * 1))))
+	size := xgb.Pad((((16 + xgb.Pad((int(LenData) * 1))) + xgb.Pad((int(LenFmt) * 1))) + xgb.Pad((int(LenOptions) * 1))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -1791,12 +1785,12 @@ func printPutDocumentDataRequest(c *xgb.Conn, Drawable xproto.Drawable, LenData
 	copy(buf[b:], Data[:LenData])
 	b += int(LenData)
 
-	for i := 0; i < int(len(DocFormat)); i++ {
+	for i := 0; i < int(LenFmt); i++ {
 		buf[b] = byte(DocFormat[i])
 		b += 1
 	}
 
-	for i := 0; i < int(len(Options)); i++ {
+	for i := 0; i < int(LenOptions); i++ {
 		buf[b] = byte(Options[i])
 		b += 1
 	}
@@ -2065,27 +2059,27 @@ type PrintSelectInputCookie struct {
 
 // PrintSelectInput sends an unchecked request.
 // If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
-func PrintSelectInput(c *xgb.Conn, Context Pcontext, EventMask uint32, EventList []uint32) PrintSelectInputCookie {
+func PrintSelectInput(c *xgb.Conn, Context Pcontext, EventMask uint32) PrintSelectInputCookie {
 	c.ExtLock.RLock()
 	defer c.ExtLock.RUnlock()
 	if _, ok := c.Extensions["XpExtension"]; !ok {
 		panic("Cannot issue request 'PrintSelectInput' using the uninitialized extension 'XpExtension'. xprint.Init(connObj) must be called first.")
 	}
 	cookie := c.NewCookie(false, false)
-	c.NewRequest(printSelectInputRequest(c, Context, EventMask, EventList), cookie)
+	c.NewRequest(printSelectInputRequest(c, Context, EventMask), cookie)
 	return PrintSelectInputCookie{cookie}
 }
 
 // PrintSelectInputChecked sends a checked request.
 // If an error occurs, it can be retrieved using PrintSelectInputCookie.Check()
-func PrintSelectInputChecked(c *xgb.Conn, Context Pcontext, EventMask uint32, EventList []uint32) PrintSelectInputCookie {
+func PrintSelectInputChecked(c *xgb.Conn, Context Pcontext, EventMask uint32) PrintSelectInputCookie {
 	c.ExtLock.RLock()
 	defer c.ExtLock.RUnlock()
 	if _, ok := c.Extensions["XpExtension"]; !ok {
 		panic("Cannot issue request 'PrintSelectInput' using the uninitialized extension 'XpExtension'. xprint.Init(connObj) must be called first.")
 	}
 	cookie := c.NewCookie(true, false)
-	c.NewRequest(printSelectInputRequest(c, Context, EventMask, EventList), cookie)
+	c.NewRequest(printSelectInputRequest(c, Context, EventMask), cookie)
 	return PrintSelectInputCookie{cookie}
 }
 
@@ -2097,8 +2091,8 @@ func (cook PrintSelectInputCookie) Check() error {
 
 // Write request to wire for PrintSelectInput
 // printSelectInputRequest writes a PrintSelectInput request to a byte slice.
-func printSelectInputRequest(c *xgb.Conn, Context Pcontext, EventMask uint32, EventList []uint32) []byte {
-	size := xgb.Pad((8 + (4 + xgb.Pad((4 * xgb.PopCount(int(EventMask)))))))
+func printSelectInputRequest(c *xgb.Conn, Context Pcontext, EventMask uint32) []byte {
+	size := 12
 	b := 0
 	buf := make([]byte, size)
 
@@ -2118,11 +2112,6 @@ func printSelectInputRequest(c *xgb.Conn, Context Pcontext, EventMask uint32, Ev
 
 	xgb.Put32(buf[b:], EventMask)
 	b += 4
-	for i := 0; i < xgb.PopCount(int(EventMask)); i++ {
-		xgb.Put32(buf[b:], EventList[i])
-		b += 4
-	}
-	b = xgb.Pad(b)
 
 	return buf
 }
diff --git a/nexgb/xproto/xproto.go b/nexgb/xproto/xproto.go
index 716c49b..237f3cb 100644
--- a/nexgb/xproto/xproto.go
+++ b/nexgb/xproto/xproto.go
@@ -343,6 +343,8 @@ const (
 	BlankingDefault      = 2
 )
 
+type Bool32 uint32
+
 type Button byte
 
 const (
@@ -1204,6 +1206,10 @@ func NewColormapId(c *xgb.Conn) (Colormap, error) {
 	return Colormap(id), nil
 }
 
+const (
+	ColormapNone = 0
+)
+
 // BadColormap is the error number for a BadColormap.
 const BadColormap = 12
 
@@ -1242,10 +1248,6 @@ func init() {
 	xgb.NewErrorFuncs[12] = ColormapErrorNew
 }
 
-const (
-	ColormapNone = 0
-)
-
 const (
 	ColormapAllocNone = 0
 	ColormapAllocAll  = 1
@@ -2474,6 +2476,10 @@ func NewFontId(c *xgb.Conn) (Font, error) {
 	return Font(id), nil
 }
 
+const (
+	FontNone = 0
+)
+
 // BadFont is the error number for a BadFont.
 const BadFont = 7
 
@@ -2512,10 +2518,6 @@ func init() {
 	xgb.NewErrorFuncs[7] = FontErrorNew
 }
 
-const (
-	FontNone = 0
-)
-
 const (
 	FontDrawLeftToRight = 0
 	FontDrawRightToLeft = 1
@@ -3046,6 +3048,7 @@ type Host struct {
 	// padding: 1 bytes
 	AddressLen uint16
 	Address    []byte // size: xgb.Pad((int(AddressLen) * 1))
+	// alignment gap to multiple of 4
 }
 
 // HostRead reads a byte slice into a Host value.
@@ -3064,6 +3067,8 @@ func HostRead(buf []byte, v *Host) int {
 	copy(v.Address[:v.AddressLen], buf[b:])
 	b += int(v.AddressLen)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return b
 }
 
@@ -3079,7 +3084,7 @@ func HostReadList(buf []byte, dest []Host) int {
 
 // Bytes writes a Host value to a byte slice.
 func (v Host) Bytes() []byte {
-	buf := make([]byte, (4 + xgb.Pad((int(v.AddressLen) * 1))))
+	buf := make([]byte, ((4 + xgb.Pad((int(v.AddressLen) * 1))) + 4))
 	b := 0
 
 	buf[b] = v.Family
@@ -3093,6 +3098,8 @@ func (v Host) Bytes() []byte {
 	copy(buf[b:], v.Address[:v.AddressLen])
 	b += int(v.AddressLen)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return buf[:b]
 }
 
@@ -3112,7 +3119,7 @@ func HostListBytes(buf []byte, list []Host) int {
 func HostListSize(list []Host) int {
 	size := 0
 	for _, item := range list {
-		size += (4 + xgb.Pad((int(item.AddressLen) * 1)))
+		size += ((4 + xgb.Pad((int(item.AddressLen) * 1))) + 4)
 	}
 	return size
 }
@@ -3445,6 +3452,8 @@ func init() {
 
 type Keycode byte
 
+type Keycode32 uint32
+
 // KeymapNotify is the event number for a KeymapNotifyEvent.
 const KeymapNotify = 11
 
@@ -5568,9 +5577,8 @@ type SetupInfo struct {
 	// padding: 4 bytes
 	Vendor string // size: xgb.Pad((int(VendorLen) * 1))
 	// alignment gap to multiple of 4
-	PixmapFormats []Format // size: xgb.Pad((int(PixmapFormatsLen) * 8))
-	// alignment gap to multiple of 4
-	Roots []ScreenInfo // size: ScreenInfoListSize(Roots)
+	PixmapFormats []Format     // size: xgb.Pad((int(PixmapFormatsLen) * 8))
+	Roots         []ScreenInfo // size: ScreenInfoListSize(Roots)
 }
 
 // SetupInfoRead reads a byte slice into a SetupInfo value.
@@ -5647,8 +5655,6 @@ func SetupInfoRead(buf []byte, v *SetupInfo) int {
 	v.PixmapFormats = make([]Format, v.PixmapFormatsLen)
 	b += FormatReadList(buf[b:], v.PixmapFormats)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Roots = make([]ScreenInfo, v.RootsLen)
 	b += ScreenInfoReadList(buf[b:], v.Roots)
 
@@ -5667,7 +5673,7 @@ func SetupInfoReadList(buf []byte, dest []SetupInfo) int {
 
 // Bytes writes a SetupInfo value to a byte slice.
 func (v SetupInfo) Bytes() []byte {
-	buf := make([]byte, (((((40 + xgb.Pad((int(v.VendorLen) * 1))) + 4) + xgb.Pad((int(v.PixmapFormatsLen) * 8))) + 4) + ScreenInfoListSize(v.Roots)))
+	buf := make([]byte, ((((40 + xgb.Pad((int(v.VendorLen) * 1))) + 4) + xgb.Pad((int(v.PixmapFormatsLen) * 8))) + ScreenInfoListSize(v.Roots)))
 	b := 0
 
 	buf[b] = v.Status
@@ -5735,8 +5741,6 @@ func (v SetupInfo) Bytes() []byte {
 
 	b += FormatListBytes(buf[b:], v.PixmapFormats)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	b += ScreenInfoListBytes(buf[b:], v.Roots)
 
 	return buf[:b]
@@ -5758,7 +5762,7 @@ func SetupInfoListBytes(buf []byte, list []SetupInfo) int {
 func SetupInfoListSize(list []SetupInfo) int {
 	size := 0
 	for _, item := range list {
-		size += (((((40 + xgb.Pad((int(item.VendorLen) * 1))) + 4) + xgb.Pad((int(item.PixmapFormatsLen) * 8))) + 4) + ScreenInfoListSize(item.Roots))
+		size += ((((40 + xgb.Pad((int(item.VendorLen) * 1))) + 4) + xgb.Pad((int(item.PixmapFormatsLen) * 8))) + ScreenInfoListSize(item.Roots))
 	}
 	return size
 }
@@ -6588,8 +6592,7 @@ type AllocColorCellsReply struct {
 	MasksLen  uint16
 	// padding: 20 bytes
 	Pixels []uint32 // size: xgb.Pad((int(PixelsLen) * 4))
-	// alignment gap to multiple of 4
-	Masks []uint32 // size: xgb.Pad((int(MasksLen) * 4))
+	Masks  []uint32 // size: xgb.Pad((int(MasksLen) * 4))
 }
 
 // Reply blocks and returns the reply data for a AllocColorCells request.
@@ -6631,8 +6634,6 @@ func allocColorCellsReply(buf []byte) *AllocColorCellsReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Masks = make([]uint32, v.MasksLen)
 	for i := 0; i < int(v.MasksLen); i++ {
 		v.Masks[i] = xgb.Get32(buf[b:])
@@ -7091,7 +7092,7 @@ func (cook ChangeGCCookie) Check() error {
 // Write request to wire for ChangeGC
 // changeGCRequest writes a ChangeGC request to a byte slice.
 func changeGCRequest(c *xgb.Conn, Gc Gcontext, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((8 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((12 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -7108,6 +7109,7 @@ func changeGCRequest(c *xgb.Conn, Gc Gcontext, ValueMask uint32, ValueList []uin
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -7204,7 +7206,7 @@ func (cook ChangeKeyboardControlCookie) Check() error {
 // Write request to wire for ChangeKeyboardControl
 // changeKeyboardControlRequest writes a ChangeKeyboardControl request to a byte slice.
 func changeKeyboardControlRequest(c *xgb.Conn, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((4 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((8 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -7218,6 +7220,7 @@ func changeKeyboardControlRequest(c *xgb.Conn, ValueMask uint32, ValueList []uin
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -7499,7 +7502,7 @@ func (cook ChangeWindowAttributesCookie) Check() error {
 // Write request to wire for ChangeWindowAttributes
 // changeWindowAttributesRequest writes a ChangeWindowAttributes request to a byte slice.
 func changeWindowAttributesRequest(c *xgb.Conn, Window Window, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((8 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((12 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -7516,6 +7519,7 @@ func changeWindowAttributesRequest(c *xgb.Conn, Window Window, ValueMask uint32,
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -7717,7 +7721,7 @@ func (cook ConfigureWindowCookie) Check() error {
 // Write request to wire for ConfigureWindow
 // configureWindowRequest writes a ConfigureWindow request to a byte slice.
 func configureWindowRequest(c *xgb.Conn, Window Window, ValueMask uint16, ValueList []uint32) []byte {
-	size := xgb.Pad((10 + (2 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((12 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -8221,7 +8225,7 @@ func (cook CreateGCCookie) Check() error {
 // Write request to wire for CreateGC
 // createGCRequest writes a CreateGC request to a byte slice.
 func createGCRequest(c *xgb.Conn, Cid Gcontext, Drawable Drawable, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((12 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((16 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -8241,6 +8245,7 @@ func createGCRequest(c *xgb.Conn, Cid Gcontext, Drawable Drawable, ValueMask uin
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -8416,7 +8421,7 @@ func (cook CreateWindowCookie) Check() error {
 // Write request to wire for CreateWindow
 // createWindowRequest writes a CreateWindow request to a byte slice.
 func createWindowRequest(c *xgb.Conn, Depth byte, Wid Window, Parent Window, X int16, Y int16, Width uint16, Height uint16, BorderWidth uint16, Class uint16, Visual Visualid, ValueMask uint32, ValueList []uint32) []byte {
-	size := xgb.Pad((28 + (4 + xgb.Pad((4 * xgb.PopCount(int(ValueMask)))))))
+	size := xgb.Pad((32 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
 	b := 0
 	buf := make([]byte, size)
 
@@ -8458,6 +8463,7 @@ func createWindowRequest(c *xgb.Conn, Depth byte, Wid Window, Parent Window, X i
 
 	xgb.Put32(buf[b:], ValueMask)
 	b += 4
+
 	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
 		xgb.Put32(buf[b:], ValueList[i])
 		b += 4
@@ -12904,8 +12910,7 @@ type QueryFontReply struct {
 	FontDescent    int16
 	CharInfosLen   uint32
 	Properties     []Fontprop // size: xgb.Pad((int(PropertiesLen) * 8))
-	// alignment gap to multiple of 4
-	CharInfos []Charinfo // size: xgb.Pad((int(CharInfosLen) * 12))
+	CharInfos      []Charinfo // size: xgb.Pad((int(CharInfosLen) * 12))
 }
 
 // Reply blocks and returns the reply data for a QueryFont request.
@@ -12983,8 +12988,6 @@ func queryFontReply(buf []byte) *QueryFontReply {
 	v.Properties = make([]Fontprop, v.PropertiesLen)
 	b += FontpropReadList(buf[b:], v.Properties)
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.CharInfos = make([]Charinfo, v.CharInfosLen)
 	b += CharinfoReadList(buf[b:], v.CharInfos)
 
diff --git a/nexgb/xselinux/xselinux.go b/nexgb/xselinux/xselinux.go
index 1afcc10..c237857 100644
--- a/nexgb/xselinux/xselinux.go
+++ b/nexgb/xselinux/xselinux.go
@@ -41,7 +41,9 @@ type ListItem struct {
 	ObjectContextLen uint32
 	DataContextLen   uint32
 	ObjectContext    string // size: xgb.Pad((int(ObjectContextLen) * 1))
-	DataContext      string // size: xgb.Pad((int(DataContextLen) * 1))
+	// alignment gap to multiple of 4
+	DataContext string // size: xgb.Pad((int(DataContextLen) * 1))
+	// alignment gap to multiple of 4
 }
 
 // ListItemRead reads a byte slice into a ListItem value.
@@ -64,6 +66,8 @@ func ListItemRead(buf []byte, v *ListItem) int {
 		b += int(v.ObjectContextLen)
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	{
 		byteString := make([]byte, v.DataContextLen)
 		copy(byteString[:v.DataContextLen], buf[b:])
@@ -71,6 +75,8 @@ func ListItemRead(buf []byte, v *ListItem) int {
 		b += int(v.DataContextLen)
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return b
 }
 
@@ -86,7 +92,7 @@ func ListItemReadList(buf []byte, dest []ListItem) int {
 
 // Bytes writes a ListItem value to a byte slice.
 func (v ListItem) Bytes() []byte {
-	buf := make([]byte, ((12 + xgb.Pad((int(v.ObjectContextLen) * 1))) + xgb.Pad((int(v.DataContextLen) * 1))))
+	buf := make([]byte, ((((12 + xgb.Pad((int(v.ObjectContextLen) * 1))) + 4) + xgb.Pad((int(v.DataContextLen) * 1))) + 4))
 	b := 0
 
 	xgb.Put32(buf[b:], uint32(v.Name))
@@ -101,9 +107,13 @@ func (v ListItem) Bytes() []byte {
 	copy(buf[b:], v.ObjectContext[:v.ObjectContextLen])
 	b += int(v.ObjectContextLen)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	copy(buf[b:], v.DataContext[:v.DataContextLen])
 	b += int(v.DataContextLen)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return buf[:b]
 }
 
@@ -123,7 +133,7 @@ func ListItemListBytes(buf []byte, list []ListItem) int {
 func ListItemListSize(list []ListItem) int {
 	size := 0
 	for _, item := range list {
-		size += ((12 + xgb.Pad((int(item.ObjectContextLen) * 1))) + xgb.Pad((int(item.DataContextLen) * 1)))
+		size += ((((12 + xgb.Pad((int(item.ObjectContextLen) * 1))) + 4) + xgb.Pad((int(item.DataContextLen) * 1))) + 4)
 	}
 	return size
 }
diff --git a/nexgb/xv/xv.go b/nexgb/xv/xv.go
index f0d3f3a..69a0549 100644
--- a/nexgb/xv/xv.go
+++ b/nexgb/xv/xv.go
@@ -45,7 +45,7 @@ type AdaptorInfo struct {
 	Type       byte
 	// padding: 1 bytes
 	Name string // size: xgb.Pad((int(NameSize) * 1))
-	// padding: 0 bytes
+	// alignment gap to multiple of 4
 	Formats []Format // size: xgb.Pad((int(NumFormats) * 8))
 }
 
@@ -77,7 +77,7 @@ func AdaptorInfoRead(buf []byte, v *AdaptorInfo) int {
 		b += int(v.NameSize)
 	}
 
-	b += 0 // padding
+	b = (b + 3) & ^3 // alignment gap
 
 	v.Formats = make([]Format, v.NumFormats)
 	b += FormatReadList(buf[b:], v.Formats)
@@ -97,7 +97,7 @@ func AdaptorInfoReadList(buf []byte, dest []AdaptorInfo) int {
 
 // Bytes writes a AdaptorInfo value to a byte slice.
 func (v AdaptorInfo) Bytes() []byte {
-	buf := make([]byte, (((12 + xgb.Pad((int(v.NameSize) * 1))) + 0) + xgb.Pad((int(v.NumFormats) * 8))))
+	buf := make([]byte, (((12 + xgb.Pad((int(v.NameSize) * 1))) + 4) + xgb.Pad((int(v.NumFormats) * 8))))
 	b := 0
 
 	xgb.Put32(buf[b:], uint32(v.BaseId))
@@ -120,7 +120,7 @@ func (v AdaptorInfo) Bytes() []byte {
 	copy(buf[b:], v.Name[:v.NameSize])
 	b += int(v.NameSize)
 
-	b += 0 // padding
+	b = (b + 3) & ^3 // alignment gap
 
 	b += FormatListBytes(buf[b:], v.Formats)
 
@@ -143,7 +143,7 @@ func AdaptorInfoListBytes(buf []byte, list []AdaptorInfo) int {
 func AdaptorInfoListSize(list []AdaptorInfo) int {
 	size := 0
 	for _, item := range list {
-		size += (((12 + xgb.Pad((int(item.NameSize) * 1))) + 0) + xgb.Pad((int(item.NumFormats) * 8)))
+		size += (((12 + xgb.Pad((int(item.NameSize) * 1))) + 4) + xgb.Pad((int(item.NumFormats) * 8)))
 	}
 	return size
 }
@@ -159,6 +159,7 @@ type AttributeInfo struct {
 	Max   int32
 	Size  uint32
 	Name  string // size: xgb.Pad((int(Size) * 1))
+	// alignment gap to multiple of 4
 }
 
 // AttributeInfoRead reads a byte slice into a AttributeInfo value.
@@ -184,6 +185,8 @@ func AttributeInfoRead(buf []byte, v *AttributeInfo) int {
 		b += int(v.Size)
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return b
 }
 
@@ -199,7 +202,7 @@ func AttributeInfoReadList(buf []byte, dest []AttributeInfo) int {
 
 // Bytes writes a AttributeInfo value to a byte slice.
 func (v AttributeInfo) Bytes() []byte {
-	buf := make([]byte, (16 + xgb.Pad((int(v.Size) * 1))))
+	buf := make([]byte, ((16 + xgb.Pad((int(v.Size) * 1))) + 4))
 	b := 0
 
 	xgb.Put32(buf[b:], v.Flags)
@@ -217,6 +220,8 @@ func (v AttributeInfo) Bytes() []byte {
 	copy(buf[b:], v.Name[:v.Size])
 	b += int(v.Size)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return buf[:b]
 }
 
@@ -236,7 +241,7 @@ func AttributeInfoListBytes(buf []byte, list []AttributeInfo) int {
 func AttributeInfoListSize(list []AttributeInfo) int {
 	size := 0
 	for _, item := range list {
-		size += (16 + xgb.Pad((int(item.Size) * 1)))
+		size += ((16 + xgb.Pad((int(item.Size) * 1))) + 4)
 	}
 	return size
 }
@@ -397,6 +402,7 @@ type EncodingInfo struct {
 	// padding: 2 bytes
 	Rate Rational
 	Name string // size: xgb.Pad((int(NameSize) * 1))
+	// alignment gap to multiple of 4
 }
 
 // EncodingInfoRead reads a byte slice into a EncodingInfo value.
@@ -427,6 +433,8 @@ func EncodingInfoRead(buf []byte, v *EncodingInfo) int {
 		b += int(v.NameSize)
 	}
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return b
 }
 
@@ -442,7 +450,7 @@ func EncodingInfoReadList(buf []byte, dest []EncodingInfo) int {
 
 // Bytes writes a EncodingInfo value to a byte slice.
 func (v EncodingInfo) Bytes() []byte {
-	buf := make([]byte, (20 + xgb.Pad((int(v.NameSize) * 1))))
+	buf := make([]byte, ((20 + xgb.Pad((int(v.NameSize) * 1))) + 4))
 	b := 0
 
 	xgb.Put32(buf[b:], uint32(v.Encoding))
@@ -468,6 +476,8 @@ func (v EncodingInfo) Bytes() []byte {
 	copy(buf[b:], v.Name[:v.NameSize])
 	b += int(v.NameSize)
 
+	b = (b + 3) & ^3 // alignment gap
+
 	return buf[:b]
 }
 
@@ -487,7 +497,7 @@ func EncodingInfoListBytes(buf []byte, list []EncodingInfo) int {
 func EncodingInfoListSize(list []EncodingInfo) int {
 	size := 0
 	for _, item := range list {
-		size += (20 + xgb.Pad((int(item.NameSize) * 1)))
+		size += ((20 + xgb.Pad((int(item.NameSize) * 1))) + 4)
 	}
 	return size
 }
@@ -567,9 +577,8 @@ type Image struct {
 	DataSize  uint32
 	NumPlanes uint32
 	Pitches   []uint32 // size: xgb.Pad((int(NumPlanes) * 4))
-	// alignment gap to multiple of 4
-	Offsets []uint32 // size: xgb.Pad((int(NumPlanes) * 4))
-	Data    []byte   // size: xgb.Pad((int(DataSize) * 1))
+	Offsets   []uint32 // size: xgb.Pad((int(NumPlanes) * 4))
+	Data      []byte   // size: xgb.Pad((int(DataSize) * 1))
 }
 
 // ImageRead reads a byte slice into a Image value.
@@ -597,8 +606,6 @@ func ImageRead(buf []byte, v *Image) int {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Offsets = make([]uint32, v.NumPlanes)
 	for i := 0; i < int(v.NumPlanes); i++ {
 		v.Offsets[i] = xgb.Get32(buf[b:])
@@ -624,7 +631,7 @@ func ImageReadList(buf []byte, dest []Image) int {
 
 // Bytes writes a Image value to a byte slice.
 func (v Image) Bytes() []byte {
-	buf := make([]byte, ((((16 + xgb.Pad((int(v.NumPlanes) * 4))) + 4) + xgb.Pad((int(v.NumPlanes) * 4))) + xgb.Pad((int(v.DataSize) * 1))))
+	buf := make([]byte, (((16 + xgb.Pad((int(v.NumPlanes) * 4))) + xgb.Pad((int(v.NumPlanes) * 4))) + xgb.Pad((int(v.DataSize) * 1))))
 	b := 0
 
 	xgb.Put32(buf[b:], v.Id)
@@ -647,8 +654,6 @@ func (v Image) Bytes() []byte {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	for i := 0; i < int(v.NumPlanes); i++ {
 		xgb.Put32(buf[b:], v.Offsets[i])
 		b += 4
@@ -676,7 +681,7 @@ func ImageListBytes(buf []byte, list []Image) int {
 func ImageListSize(list []Image) int {
 	size := 0
 	for _, item := range list {
-		size += ((((16 + xgb.Pad((int(item.NumPlanes) * 4))) + 4) + xgb.Pad((int(item.NumPlanes) * 4))) + xgb.Pad((int(item.DataSize) * 1)))
+		size += (((16 + xgb.Pad((int(item.NumPlanes) * 4))) + xgb.Pad((int(item.NumPlanes) * 4))) + xgb.Pad((int(item.DataSize) * 1)))
 	}
 	return size
 }
@@ -2416,7 +2421,6 @@ type QueryImageAttributesReply struct {
 	Height    uint16
 	// padding: 12 bytes
 	Pitches []uint32 // size: xgb.Pad((int(NumPlanes) * 4))
-	// alignment gap to multiple of 4
 	Offsets []uint32 // size: xgb.Pad((int(NumPlanes) * 4))
 }
 
@@ -2465,8 +2469,6 @@ func queryImageAttributesReply(buf []byte) *QueryImageAttributesReply {
 		b += 4
 	}
 
-	b = (b + 3) & ^3 // alignment gap
-
 	v.Offsets = make([]uint32, v.NumPlanes)
 	for i := 0; i < int(v.NumPlanes); i++ {
 		v.Offsets[i] = xgb.Get32(buf[b:])