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, 4029 insertions, 0 deletions

diff --git a/nexgb/render/render.go b/nexgb/render/render.go
new file mode 100644
index 0000000..01ea481
--- /dev/null
+++ b/nexgb/render/render.go
@@ -0,0 +1,4029 @@
+// Package render is the X client API for the RENDER extension.
+package render
+
+// This file is automatically generated from render.xml. Edit at your peril!
+
+import (
+	"github.com/BurntSushi/xgb"
+
+	"github.com/BurntSushi/xgb/xproto"
+)
+
+// Init must be called before using the RENDER extension.
+func Init(c *xgb.Conn) error {
+	reply, err := xproto.QueryExtension(c, 6, "RENDER").Reply()
+	switch {
+	case err != nil:
+		return err
+	case !reply.Present:
+		return xgb.Errorf("No extension named RENDER could be found on on the server.")
+	}
+
+	c.ExtLock.Lock()
+	c.Extensions["RENDER"] = reply.MajorOpcode
+	c.ExtLock.Unlock()
+	for evNum, fun := range xgb.NewExtEventFuncs["RENDER"] {
+		xgb.NewEventFuncs[int(reply.FirstEvent)+evNum] = fun
+	}
+	for errNum, fun := range xgb.NewExtErrorFuncs["RENDER"] {
+		xgb.NewErrorFuncs[int(reply.FirstError)+errNum] = fun
+	}
+	return nil
+}
+
+func init() {
+	xgb.NewExtEventFuncs["RENDER"] = make(map[int]xgb.NewEventFun)
+	xgb.NewExtErrorFuncs["RENDER"] = make(map[int]xgb.NewErrorFun)
+}
+
+type Animcursorelt struct {
+	Cursor xproto.Cursor
+	Delay  uint32
+}
+
+// AnimcursoreltRead reads a byte slice into a Animcursorelt value.
+func AnimcursoreltRead(buf []byte, v *Animcursorelt) int {
+	b := 0
+
+	v.Cursor = xproto.Cursor(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Delay = xgb.Get32(buf[b:])
+	b += 4
+
+	return b
+}
+
+// AnimcursoreltReadList reads a byte slice into a list of Animcursorelt values.
+func AnimcursoreltReadList(buf []byte, dest []Animcursorelt) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Animcursorelt{}
+		b += AnimcursoreltRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Animcursorelt value to a byte slice.
+func (v Animcursorelt) Bytes() []byte {
+	buf := make([]byte, 8)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Cursor))
+	b += 4
+
+	xgb.Put32(buf[b:], v.Delay)
+	b += 4
+
+	return buf[:b]
+}
+
+// AnimcursoreltListBytes writes a list of Animcursorelt values to a byte slice.
+func AnimcursoreltListBytes(buf []byte, list []Animcursorelt) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Color struct {
+	Red   uint16
+	Green uint16
+	Blue  uint16
+	Alpha uint16
+}
+
+// ColorRead reads a byte slice into a Color value.
+func ColorRead(buf []byte, v *Color) int {
+	b := 0
+
+	v.Red = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Green = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Blue = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Alpha = xgb.Get16(buf[b:])
+	b += 2
+
+	return b
+}
+
+// ColorReadList reads a byte slice into a list of Color values.
+func ColorReadList(buf []byte, dest []Color) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Color{}
+		b += ColorRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Color value to a byte slice.
+func (v Color) Bytes() []byte {
+	buf := make([]byte, 8)
+	b := 0
+
+	xgb.Put16(buf[b:], v.Red)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Green)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Blue)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Alpha)
+	b += 2
+
+	return buf[:b]
+}
+
+// ColorListBytes writes a list of Color values to a byte slice.
+func ColorListBytes(buf []byte, list []Color) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+const (
+	CpRepeat           = 1
+	CpAlphaMap         = 2
+	CpAlphaXOrigin     = 4
+	CpAlphaYOrigin     = 8
+	CpClipXOrigin      = 16
+	CpClipYOrigin      = 32
+	CpClipMask         = 64
+	CpGraphicsExposure = 128
+	CpSubwindowMode    = 256
+	CpPolyEdge         = 512
+	CpPolyMode         = 1024
+	CpDither           = 2048
+	CpComponentAlpha   = 4096
+)
+
+type Directformat struct {
+	RedShift   uint16
+	RedMask    uint16
+	GreenShift uint16
+	GreenMask  uint16
+	BlueShift  uint16
+	BlueMask   uint16
+	AlphaShift uint16
+	AlphaMask  uint16
+}
+
+// DirectformatRead reads a byte slice into a Directformat value.
+func DirectformatRead(buf []byte, v *Directformat) int {
+	b := 0
+
+	v.RedShift = xgb.Get16(buf[b:])
+	b += 2
+
+	v.RedMask = xgb.Get16(buf[b:])
+	b += 2
+
+	v.GreenShift = xgb.Get16(buf[b:])
+	b += 2
+
+	v.GreenMask = xgb.Get16(buf[b:])
+	b += 2
+
+	v.BlueShift = xgb.Get16(buf[b:])
+	b += 2
+
+	v.BlueMask = xgb.Get16(buf[b:])
+	b += 2
+
+	v.AlphaShift = xgb.Get16(buf[b:])
+	b += 2
+
+	v.AlphaMask = xgb.Get16(buf[b:])
+	b += 2
+
+	return b
+}
+
+// DirectformatReadList reads a byte slice into a list of Directformat values.
+func DirectformatReadList(buf []byte, dest []Directformat) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Directformat{}
+		b += DirectformatRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Directformat value to a byte slice.
+func (v Directformat) Bytes() []byte {
+	buf := make([]byte, 16)
+	b := 0
+
+	xgb.Put16(buf[b:], v.RedShift)
+	b += 2
+
+	xgb.Put16(buf[b:], v.RedMask)
+	b += 2
+
+	xgb.Put16(buf[b:], v.GreenShift)
+	b += 2
+
+	xgb.Put16(buf[b:], v.GreenMask)
+	b += 2
+
+	xgb.Put16(buf[b:], v.BlueShift)
+	b += 2
+
+	xgb.Put16(buf[b:], v.BlueMask)
+	b += 2
+
+	xgb.Put16(buf[b:], v.AlphaShift)
+	b += 2
+
+	xgb.Put16(buf[b:], v.AlphaMask)
+	b += 2
+
+	return buf[:b]
+}
+
+// DirectformatListBytes writes a list of Directformat values to a byte slice.
+func DirectformatListBytes(buf []byte, list []Directformat) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Fixed int32
+
+type Glyph uint32
+
+// BadGlyph is the error number for a BadGlyph.
+const BadGlyph = 4
+
+type GlyphError struct {
+	Sequence uint16
+	NiceName string
+}
+
+// GlyphErrorNew constructs a GlyphError value that implements xgb.Error from a byte slice.
+func GlyphErrorNew(buf []byte) xgb.Error {
+	v := GlyphError{}
+	v.NiceName = "Glyph"
+
+	b := 1 // skip error determinant
+	b += 1 // don't read error number
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	return v
+}
+
+// SequenceId returns the sequence id attached to the BadGlyph error.
+// This is mostly used internally.
+func (err GlyphError) SequenceId() uint16 {
+	return err.Sequence
+}
+
+// BadId returns the 'BadValue' number if one exists for the BadGlyph error. If no bad value exists, 0 is returned.
+func (err GlyphError) BadId() uint32 {
+	return 0
+}
+
+// Error returns a rudimentary string representation of the BadGlyph error.
+
+func (err GlyphError) Error() string {
+	fieldVals := make([]string, 0, 0)
+	fieldVals = append(fieldVals, "NiceName: "+err.NiceName)
+	fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", err.Sequence))
+	return "BadGlyph {" + xgb.StringsJoin(fieldVals, ", ") + "}"
+}
+
+func init() {
+	xgb.NewExtErrorFuncs["RENDER"][4] = GlyphErrorNew
+}
+
+// BadGlyphSet is the error number for a BadGlyphSet.
+const BadGlyphSet = 3
+
+type GlyphSetError struct {
+	Sequence uint16
+	NiceName string
+}
+
+// GlyphSetErrorNew constructs a GlyphSetError value that implements xgb.Error from a byte slice.
+func GlyphSetErrorNew(buf []byte) xgb.Error {
+	v := GlyphSetError{}
+	v.NiceName = "GlyphSet"
+
+	b := 1 // skip error determinant
+	b += 1 // don't read error number
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	return v
+}
+
+// SequenceId returns the sequence id attached to the BadGlyphSet error.
+// This is mostly used internally.
+func (err GlyphSetError) SequenceId() uint16 {
+	return err.Sequence
+}
+
+// BadId returns the 'BadValue' number if one exists for the BadGlyphSet error. If no bad value exists, 0 is returned.
+func (err GlyphSetError) BadId() uint32 {
+	return 0
+}
+
+// Error returns a rudimentary string representation of the BadGlyphSet error.
+
+func (err GlyphSetError) Error() string {
+	fieldVals := make([]string, 0, 0)
+	fieldVals = append(fieldVals, "NiceName: "+err.NiceName)
+	fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", err.Sequence))
+	return "BadGlyphSet {" + xgb.StringsJoin(fieldVals, ", ") + "}"
+}
+
+func init() {
+	xgb.NewExtErrorFuncs["RENDER"][3] = GlyphSetErrorNew
+}
+
+type Glyphinfo struct {
+	Width  uint16
+	Height uint16
+	X      int16
+	Y      int16
+	XOff   int16
+	YOff   int16
+}
+
+// GlyphinfoRead reads a byte slice into a Glyphinfo value.
+func GlyphinfoRead(buf []byte, v *Glyphinfo) int {
+	b := 0
+
+	v.Width = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Height = 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.XOff = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	v.YOff = int16(xgb.Get16(buf[b:]))
+	b += 2
+
+	return b
+}
+
+// GlyphinfoReadList reads a byte slice into a list of Glyphinfo values.
+func GlyphinfoReadList(buf []byte, dest []Glyphinfo) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Glyphinfo{}
+		b += GlyphinfoRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Glyphinfo value to a byte slice.
+func (v Glyphinfo) Bytes() []byte {
+	buf := make([]byte, 12)
+	b := 0
+
+	xgb.Put16(buf[b:], v.Width)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Height)
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.X))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.Y))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.XOff))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(v.YOff))
+	b += 2
+
+	return buf[:b]
+}
+
+// GlyphinfoListBytes writes a list of Glyphinfo values to a byte slice.
+func GlyphinfoListBytes(buf []byte, list []Glyphinfo) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Glyphset uint32
+
+func NewGlyphsetId(c *xgb.Conn) (Glyphset, error) {
+	id, err := c.NewId()
+	if err != nil {
+		return 0, err
+	}
+	return Glyphset(id), nil
+}
+
+type Indexvalue struct {
+	Pixel uint32
+	Red   uint16
+	Green uint16
+	Blue  uint16
+	Alpha uint16
+}
+
+// IndexvalueRead reads a byte slice into a Indexvalue value.
+func IndexvalueRead(buf []byte, v *Indexvalue) int {
+	b := 0
+
+	v.Pixel = xgb.Get32(buf[b:])
+	b += 4
+
+	v.Red = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Green = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Blue = xgb.Get16(buf[b:])
+	b += 2
+
+	v.Alpha = xgb.Get16(buf[b:])
+	b += 2
+
+	return b
+}
+
+// IndexvalueReadList reads a byte slice into a list of Indexvalue values.
+func IndexvalueReadList(buf []byte, dest []Indexvalue) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Indexvalue{}
+		b += IndexvalueRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Indexvalue value to a byte slice.
+func (v Indexvalue) Bytes() []byte {
+	buf := make([]byte, 12)
+	b := 0
+
+	xgb.Put32(buf[b:], v.Pixel)
+	b += 4
+
+	xgb.Put16(buf[b:], v.Red)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Green)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Blue)
+	b += 2
+
+	xgb.Put16(buf[b:], v.Alpha)
+	b += 2
+
+	return buf[:b]
+}
+
+// IndexvalueListBytes writes a list of Indexvalue values to a byte slice.
+func IndexvalueListBytes(buf []byte, list []Indexvalue) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Linefix struct {
+	P1 Pointfix
+	P2 Pointfix
+}
+
+// LinefixRead reads a byte slice into a Linefix value.
+func LinefixRead(buf []byte, v *Linefix) int {
+	b := 0
+
+	v.P1 = Pointfix{}
+	b += PointfixRead(buf[b:], &v.P1)
+
+	v.P2 = Pointfix{}
+	b += PointfixRead(buf[b:], &v.P2)
+
+	return b
+}
+
+// LinefixReadList reads a byte slice into a list of Linefix values.
+func LinefixReadList(buf []byte, dest []Linefix) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Linefix{}
+		b += LinefixRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Linefix value to a byte slice.
+func (v Linefix) Bytes() []byte {
+	buf := make([]byte, 16)
+	b := 0
+
+	{
+		structBytes := v.P1.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := v.P2.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf[:b]
+}
+
+// LinefixListBytes writes a list of Linefix values to a byte slice.
+func LinefixListBytes(buf []byte, list []Linefix) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+// BadPictFormat is the error number for a BadPictFormat.
+const BadPictFormat = 0
+
+type PictFormatError struct {
+	Sequence uint16
+	NiceName string
+}
+
+// PictFormatErrorNew constructs a PictFormatError value that implements xgb.Error from a byte slice.
+func PictFormatErrorNew(buf []byte) xgb.Error {
+	v := PictFormatError{}
+	v.NiceName = "PictFormat"
+
+	b := 1 // skip error determinant
+	b += 1 // don't read error number
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	return v
+}
+
+// SequenceId returns the sequence id attached to the BadPictFormat error.
+// This is mostly used internally.
+func (err PictFormatError) SequenceId() uint16 {
+	return err.Sequence
+}
+
+// BadId returns the 'BadValue' number if one exists for the BadPictFormat error. If no bad value exists, 0 is returned.
+func (err PictFormatError) BadId() uint32 {
+	return 0
+}
+
+// Error returns a rudimentary string representation of the BadPictFormat error.
+
+func (err PictFormatError) Error() string {
+	fieldVals := make([]string, 0, 0)
+	fieldVals = append(fieldVals, "NiceName: "+err.NiceName)
+	fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", err.Sequence))
+	return "BadPictFormat {" + xgb.StringsJoin(fieldVals, ", ") + "}"
+}
+
+func init() {
+	xgb.NewExtErrorFuncs["RENDER"][0] = PictFormatErrorNew
+}
+
+// BadPictOp is the error number for a BadPictOp.
+const BadPictOp = 2
+
+type PictOpError struct {
+	Sequence uint16
+	NiceName string
+}
+
+// PictOpErrorNew constructs a PictOpError value that implements xgb.Error from a byte slice.
+func PictOpErrorNew(buf []byte) xgb.Error {
+	v := PictOpError{}
+	v.NiceName = "PictOp"
+
+	b := 1 // skip error determinant
+	b += 1 // don't read error number
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	return v
+}
+
+// SequenceId returns the sequence id attached to the BadPictOp error.
+// This is mostly used internally.
+func (err PictOpError) SequenceId() uint16 {
+	return err.Sequence
+}
+
+// BadId returns the 'BadValue' number if one exists for the BadPictOp error. If no bad value exists, 0 is returned.
+func (err PictOpError) BadId() uint32 {
+	return 0
+}
+
+// Error returns a rudimentary string representation of the BadPictOp error.
+
+func (err PictOpError) Error() string {
+	fieldVals := make([]string, 0, 0)
+	fieldVals = append(fieldVals, "NiceName: "+err.NiceName)
+	fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", err.Sequence))
+	return "BadPictOp {" + xgb.StringsJoin(fieldVals, ", ") + "}"
+}
+
+func init() {
+	xgb.NewExtErrorFuncs["RENDER"][2] = PictOpErrorNew
+}
+
+const (
+	PictOpClear               = 0
+	PictOpSrc                 = 1
+	PictOpDst                 = 2
+	PictOpOver                = 3
+	PictOpOverReverse         = 4
+	PictOpIn                  = 5
+	PictOpInReverse           = 6
+	PictOpOut                 = 7
+	PictOpOutReverse          = 8
+	PictOpAtop                = 9
+	PictOpAtopReverse         = 10
+	PictOpXor                 = 11
+	PictOpAdd                 = 12
+	PictOpSaturate            = 13
+	PictOpDisjointClear       = 16
+	PictOpDisjointSrc         = 17
+	PictOpDisjointDst         = 18
+	PictOpDisjointOver        = 19
+	PictOpDisjointOverReverse = 20
+	PictOpDisjointIn          = 21
+	PictOpDisjointInReverse   = 22
+	PictOpDisjointOut         = 23
+	PictOpDisjointOutReverse  = 24
+	PictOpDisjointAtop        = 25
+	PictOpDisjointAtopReverse = 26
+	PictOpDisjointXor         = 27
+	PictOpConjointClear       = 32
+	PictOpConjointSrc         = 33
+	PictOpConjointDst         = 34
+	PictOpConjointOver        = 35
+	PictOpConjointOverReverse = 36
+	PictOpConjointIn          = 37
+	PictOpConjointInReverse   = 38
+	PictOpConjointOut         = 39
+	PictOpConjointOutReverse  = 40
+	PictOpConjointAtop        = 41
+	PictOpConjointAtopReverse = 42
+	PictOpConjointXor         = 43
+	PictOpMultiply            = 48
+	PictOpScreen              = 49
+	PictOpOverlay             = 50
+	PictOpDarken              = 51
+	PictOpLighten             = 52
+	PictOpColorDodge          = 53
+	PictOpColorBurn           = 54
+	PictOpHardLight           = 55
+	PictOpSoftLight           = 56
+	PictOpDifference          = 57
+	PictOpExclusion           = 58
+	PictOpHSLHue              = 59
+	PictOpHSLSaturation       = 60
+	PictOpHSLColor            = 61
+	PictOpHSLLuminosity       = 62
+)
+
+const (
+	PictTypeIndexed = 0
+	PictTypeDirect  = 1
+)
+
+type Pictdepth struct {
+	Depth byte
+	// padding: 1 bytes
+	NumVisuals uint16
+	// padding: 4 bytes
+	Visuals []Pictvisual // size: xgb.Pad((int(NumVisuals) * 8))
+}
+
+// PictdepthRead reads a byte slice into a Pictdepth value.
+func PictdepthRead(buf []byte, v *Pictdepth) int {
+	b := 0
+
+	v.Depth = buf[b]
+	b += 1
+
+	b += 1 // padding
+
+	v.NumVisuals = xgb.Get16(buf[b:])
+	b += 2
+
+	b += 4 // padding
+
+	v.Visuals = make([]Pictvisual, v.NumVisuals)
+	b += PictvisualReadList(buf[b:], v.Visuals)
+
+	return b
+}
+
+// PictdepthReadList reads a byte slice into a list of Pictdepth values.
+func PictdepthReadList(buf []byte, dest []Pictdepth) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Pictdepth{}
+		b += PictdepthRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Pictdepth value to a byte slice.
+func (v Pictdepth) Bytes() []byte {
+	buf := make([]byte, (8 + xgb.Pad((int(v.NumVisuals) * 8))))
+	b := 0
+
+	buf[b] = v.Depth
+	b += 1
+
+	b += 1 // padding
+
+	xgb.Put16(buf[b:], v.NumVisuals)
+	b += 2
+
+	b += 4 // padding
+
+	b += PictvisualListBytes(buf[b:], v.Visuals)
+
+	return buf[:b]
+}
+
+// PictdepthListBytes writes a list of Pictdepth values to a byte slice.
+func PictdepthListBytes(buf []byte, list []Pictdepth) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+// PictdepthListSize computes the size (bytes) of a list of Pictdepth values.
+func PictdepthListSize(list []Pictdepth) int {
+	size := 0
+	for _, item := range list {
+		size += (8 + xgb.Pad((int(item.NumVisuals) * 8)))
+	}
+	return size
+}
+
+type Pictformat uint32
+
+func NewPictformatId(c *xgb.Conn) (Pictformat, error) {
+	id, err := c.NewId()
+	if err != nil {
+		return 0, err
+	}
+	return Pictformat(id), nil
+}
+
+type Pictforminfo struct {
+	Id    Pictformat
+	Type  byte
+	Depth byte
+	// padding: 2 bytes
+	Direct   Directformat
+	Colormap xproto.Colormap
+}
+
+// PictforminfoRead reads a byte slice into a Pictforminfo value.
+func PictforminfoRead(buf []byte, v *Pictforminfo) int {
+	b := 0
+
+	v.Id = Pictformat(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Type = buf[b]
+	b += 1
+
+	v.Depth = buf[b]
+	b += 1
+
+	b += 2 // padding
+
+	v.Direct = Directformat{}
+	b += DirectformatRead(buf[b:], &v.Direct)
+
+	v.Colormap = xproto.Colormap(xgb.Get32(buf[b:]))
+	b += 4
+
+	return b
+}
+
+// PictforminfoReadList reads a byte slice into a list of Pictforminfo values.
+func PictforminfoReadList(buf []byte, dest []Pictforminfo) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Pictforminfo{}
+		b += PictforminfoRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Pictforminfo value to a byte slice.
+func (v Pictforminfo) Bytes() []byte {
+	buf := make([]byte, 28)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Id))
+	b += 4
+
+	buf[b] = v.Type
+	b += 1
+
+	buf[b] = v.Depth
+	b += 1
+
+	b += 2 // padding
+
+	{
+		structBytes := v.Direct.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	xgb.Put32(buf[b:], uint32(v.Colormap))
+	b += 4
+
+	return buf[:b]
+}
+
+// PictforminfoListBytes writes a list of Pictforminfo values to a byte slice.
+func PictforminfoListBytes(buf []byte, list []Pictforminfo) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Pictscreen struct {
+	NumDepths uint32
+	Fallback  Pictformat
+	Depths    []Pictdepth // size: PictdepthListSize(Depths)
+}
+
+// PictscreenRead reads a byte slice into a Pictscreen value.
+func PictscreenRead(buf []byte, v *Pictscreen) int {
+	b := 0
+
+	v.NumDepths = xgb.Get32(buf[b:])
+	b += 4
+
+	v.Fallback = Pictformat(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Depths = make([]Pictdepth, v.NumDepths)
+	b += PictdepthReadList(buf[b:], v.Depths)
+
+	return b
+}
+
+// PictscreenReadList reads a byte slice into a list of Pictscreen values.
+func PictscreenReadList(buf []byte, dest []Pictscreen) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Pictscreen{}
+		b += PictscreenRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Pictscreen value to a byte slice.
+func (v Pictscreen) Bytes() []byte {
+	buf := make([]byte, (8 + PictdepthListSize(v.Depths)))
+	b := 0
+
+	xgb.Put32(buf[b:], v.NumDepths)
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Fallback))
+	b += 4
+
+	b += PictdepthListBytes(buf[b:], v.Depths)
+
+	return buf[:b]
+}
+
+// PictscreenListBytes writes a list of Pictscreen values to a byte slice.
+func PictscreenListBytes(buf []byte, list []Pictscreen) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+// PictscreenListSize computes the size (bytes) of a list of Pictscreen values.
+func PictscreenListSize(list []Pictscreen) int {
+	size := 0
+	for _, item := range list {
+		size += (8 + PictdepthListSize(item.Depths))
+	}
+	return size
+}
+
+type Picture uint32
+
+func NewPictureId(c *xgb.Conn) (Picture, error) {
+	id, err := c.NewId()
+	if err != nil {
+		return 0, err
+	}
+	return Picture(id), nil
+}
+
+// BadPicture is the error number for a BadPicture.
+const BadPicture = 1
+
+type PictureError struct {
+	Sequence uint16
+	NiceName string
+}
+
+// PictureErrorNew constructs a PictureError value that implements xgb.Error from a byte slice.
+func PictureErrorNew(buf []byte) xgb.Error {
+	v := PictureError{}
+	v.NiceName = "Picture"
+
+	b := 1 // skip error determinant
+	b += 1 // don't read error number
+
+	v.Sequence = xgb.Get16(buf[b:])
+	b += 2
+
+	return v
+}
+
+// SequenceId returns the sequence id attached to the BadPicture error.
+// This is mostly used internally.
+func (err PictureError) SequenceId() uint16 {
+	return err.Sequence
+}
+
+// BadId returns the 'BadValue' number if one exists for the BadPicture error. If no bad value exists, 0 is returned.
+func (err PictureError) BadId() uint32 {
+	return 0
+}
+
+// Error returns a rudimentary string representation of the BadPicture error.
+
+func (err PictureError) Error() string {
+	fieldVals := make([]string, 0, 0)
+	fieldVals = append(fieldVals, "NiceName: "+err.NiceName)
+	fieldVals = append(fieldVals, xgb.Sprintf("Sequence: %d", err.Sequence))
+	return "BadPicture {" + xgb.StringsJoin(fieldVals, ", ") + "}"
+}
+
+func init() {
+	xgb.NewExtErrorFuncs["RENDER"][1] = PictureErrorNew
+}
+
+const (
+	PictureNone = 0
+)
+
+type Pictvisual struct {
+	Visual xproto.Visualid
+	Format Pictformat
+}
+
+// PictvisualRead reads a byte slice into a Pictvisual value.
+func PictvisualRead(buf []byte, v *Pictvisual) int {
+	b := 0
+
+	v.Visual = xproto.Visualid(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Format = Pictformat(xgb.Get32(buf[b:]))
+	b += 4
+
+	return b
+}
+
+// PictvisualReadList reads a byte slice into a list of Pictvisual values.
+func PictvisualReadList(buf []byte, dest []Pictvisual) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Pictvisual{}
+		b += PictvisualRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Pictvisual value to a byte slice.
+func (v Pictvisual) Bytes() []byte {
+	buf := make([]byte, 8)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Visual))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Format))
+	b += 4
+
+	return buf[:b]
+}
+
+// PictvisualListBytes writes a list of Pictvisual values to a byte slice.
+func PictvisualListBytes(buf []byte, list []Pictvisual) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Pointfix struct {
+	X Fixed
+	Y Fixed
+}
+
+// PointfixRead reads a byte slice into a Pointfix value.
+func PointfixRead(buf []byte, v *Pointfix) int {
+	b := 0
+
+	v.X = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Y = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	return b
+}
+
+// PointfixReadList reads a byte slice into a list of Pointfix values.
+func PointfixReadList(buf []byte, dest []Pointfix) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Pointfix{}
+		b += PointfixRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Pointfix value to a byte slice.
+func (v Pointfix) Bytes() []byte {
+	buf := make([]byte, 8)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.X))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Y))
+	b += 4
+
+	return buf[:b]
+}
+
+// PointfixListBytes writes a list of Pointfix values to a byte slice.
+func PointfixListBytes(buf []byte, list []Pointfix) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+const (
+	PolyEdgeSharp  = 0
+	PolyEdgeSmooth = 1
+)
+
+const (
+	PolyModePrecise   = 0
+	PolyModeImprecise = 1
+)
+
+const (
+	RepeatNone    = 0
+	RepeatNormal  = 1
+	RepeatPad     = 2
+	RepeatReflect = 3
+)
+
+type Spanfix struct {
+	L Fixed
+	R Fixed
+	Y Fixed
+}
+
+// SpanfixRead reads a byte slice into a Spanfix value.
+func SpanfixRead(buf []byte, v *Spanfix) int {
+	b := 0
+
+	v.L = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.R = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Y = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	return b
+}
+
+// SpanfixReadList reads a byte slice into a list of Spanfix values.
+func SpanfixReadList(buf []byte, dest []Spanfix) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Spanfix{}
+		b += SpanfixRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Spanfix value to a byte slice.
+func (v Spanfix) Bytes() []byte {
+	buf := make([]byte, 12)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.L))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.R))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Y))
+	b += 4
+
+	return buf[:b]
+}
+
+// SpanfixListBytes writes a list of Spanfix values to a byte slice.
+func SpanfixListBytes(buf []byte, list []Spanfix) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+const (
+	SubPixelUnknown       = 0
+	SubPixelHorizontalRGB = 1
+	SubPixelHorizontalBGR = 2
+	SubPixelVerticalRGB   = 3
+	SubPixelVerticalBGR   = 4
+	SubPixelNone          = 5
+)
+
+type Transform struct {
+	Matrix11 Fixed
+	Matrix12 Fixed
+	Matrix13 Fixed
+	Matrix21 Fixed
+	Matrix22 Fixed
+	Matrix23 Fixed
+	Matrix31 Fixed
+	Matrix32 Fixed
+	Matrix33 Fixed
+}
+
+// TransformRead reads a byte slice into a Transform value.
+func TransformRead(buf []byte, v *Transform) int {
+	b := 0
+
+	v.Matrix11 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix12 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix13 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix21 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix22 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix23 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix31 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix32 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Matrix33 = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	return b
+}
+
+// TransformReadList reads a byte slice into a list of Transform values.
+func TransformReadList(buf []byte, dest []Transform) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Transform{}
+		b += TransformRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Transform value to a byte slice.
+func (v Transform) Bytes() []byte {
+	buf := make([]byte, 36)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Matrix11))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix12))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix13))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix21))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix22))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix23))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix31))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix32))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Matrix33))
+	b += 4
+
+	return buf[:b]
+}
+
+// TransformListBytes writes a list of Transform values to a byte slice.
+func TransformListBytes(buf []byte, list []Transform) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Trap struct {
+	Top Spanfix
+	Bot Spanfix
+}
+
+// TrapRead reads a byte slice into a Trap value.
+func TrapRead(buf []byte, v *Trap) int {
+	b := 0
+
+	v.Top = Spanfix{}
+	b += SpanfixRead(buf[b:], &v.Top)
+
+	v.Bot = Spanfix{}
+	b += SpanfixRead(buf[b:], &v.Bot)
+
+	return b
+}
+
+// TrapReadList reads a byte slice into a list of Trap values.
+func TrapReadList(buf []byte, dest []Trap) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Trap{}
+		b += TrapRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Trap value to a byte slice.
+func (v Trap) Bytes() []byte {
+	buf := make([]byte, 24)
+	b := 0
+
+	{
+		structBytes := v.Top.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := v.Bot.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf[:b]
+}
+
+// TrapListBytes writes a list of Trap values to a byte slice.
+func TrapListBytes(buf []byte, list []Trap) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Trapezoid struct {
+	Top    Fixed
+	Bottom Fixed
+	Left   Linefix
+	Right  Linefix
+}
+
+// TrapezoidRead reads a byte slice into a Trapezoid value.
+func TrapezoidRead(buf []byte, v *Trapezoid) int {
+	b := 0
+
+	v.Top = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Bottom = Fixed(xgb.Get32(buf[b:]))
+	b += 4
+
+	v.Left = Linefix{}
+	b += LinefixRead(buf[b:], &v.Left)
+
+	v.Right = Linefix{}
+	b += LinefixRead(buf[b:], &v.Right)
+
+	return b
+}
+
+// TrapezoidReadList reads a byte slice into a list of Trapezoid values.
+func TrapezoidReadList(buf []byte, dest []Trapezoid) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Trapezoid{}
+		b += TrapezoidRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Trapezoid value to a byte slice.
+func (v Trapezoid) Bytes() []byte {
+	buf := make([]byte, 40)
+	b := 0
+
+	xgb.Put32(buf[b:], uint32(v.Top))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(v.Bottom))
+	b += 4
+
+	{
+		structBytes := v.Left.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := v.Right.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf[:b]
+}
+
+// TrapezoidListBytes writes a list of Trapezoid values to a byte slice.
+func TrapezoidListBytes(buf []byte, list []Trapezoid) int {
+	b := 0
+	var structBytes []byte
+	for _, item := range list {
+		structBytes = item.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+	return xgb.Pad(b)
+}
+
+type Triangle struct {
+	P1 Pointfix
+	P2 Pointfix
+	P3 Pointfix
+}
+
+// TriangleRead reads a byte slice into a Triangle value.
+func TriangleRead(buf []byte, v *Triangle) int {
+	b := 0
+
+	v.P1 = Pointfix{}
+	b += PointfixRead(buf[b:], &v.P1)
+
+	v.P2 = Pointfix{}
+	b += PointfixRead(buf[b:], &v.P2)
+
+	v.P3 = Pointfix{}
+	b += PointfixRead(buf[b:], &v.P3)
+
+	return b
+}
+
+// TriangleReadList reads a byte slice into a list of Triangle values.
+func TriangleReadList(buf []byte, dest []Triangle) int {
+	b := 0
+	for i := 0; i < len(dest); i++ {
+		dest[i] = Triangle{}
+		b += TriangleRead(buf[b:], &dest[i])
+	}
+	return xgb.Pad(b)
+}
+
+// Bytes writes a Triangle value to a byte slice.
+func (v Triangle) Bytes() []byte {
+	buf := make([]byte, 24)
+	b := 0
+
+	{
+		structBytes := v.P1.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := v.P2.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := v.P3.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf[:b]
+}
+
+// TriangleListBytes writes a list of Triangle values to a byte slice.
+func TriangleListBytes(buf []byte, list []Triangle) 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'
+
+// AddGlyphsCookie is a cookie used only for AddGlyphs requests.
+type AddGlyphsCookie struct {
+	*xgb.Cookie
+}
+
+// AddGlyphs sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func AddGlyphs(c *xgb.Conn, Glyphset Glyphset, GlyphsLen uint32, Glyphids []uint32, Glyphs []Glyphinfo, Data []byte) AddGlyphsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'AddGlyphs' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(addGlyphsRequest(c, Glyphset, GlyphsLen, Glyphids, Glyphs, Data), cookie)
+	return AddGlyphsCookie{cookie}
+}
+
+// AddGlyphsChecked sends a checked request.
+// If an error occurs, it can be retrieved using AddGlyphsCookie.Check()
+func AddGlyphsChecked(c *xgb.Conn, Glyphset Glyphset, GlyphsLen uint32, Glyphids []uint32, Glyphs []Glyphinfo, Data []byte) AddGlyphsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'AddGlyphs' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(addGlyphsRequest(c, Glyphset, GlyphsLen, Glyphids, Glyphs, Data), cookie)
+	return AddGlyphsCookie{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 AddGlyphsCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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))) + xgb.Pad((int(GlyphsLen) * 12))) + xgb.Pad((len(Data) * 1))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 20 // 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(Glyphset))
+	b += 4
+
+	xgb.Put32(buf[b:], GlyphsLen)
+	b += 4
+
+	for i := 0; i < int(GlyphsLen); i++ {
+		xgb.Put32(buf[b:], Glyphids[i])
+		b += 4
+	}
+
+	b += GlyphinfoListBytes(buf[b:], Glyphs)
+
+	copy(buf[b:], Data[:len(Data)])
+	b += int(len(Data))
+
+	return buf
+}
+
+// AddTrapsCookie is a cookie used only for AddTraps requests.
+type AddTrapsCookie struct {
+	*xgb.Cookie
+}
+
+// AddTraps sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func AddTraps(c *xgb.Conn, Picture Picture, XOff int16, YOff int16, Traps []Trap) AddTrapsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'AddTraps' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(addTrapsRequest(c, Picture, XOff, YOff, Traps), cookie)
+	return AddTrapsCookie{cookie}
+}
+
+// AddTrapsChecked sends a checked request.
+// If an error occurs, it can be retrieved using AddTrapsCookie.Check()
+func AddTrapsChecked(c *xgb.Conn, Picture Picture, XOff int16, YOff int16, Traps []Trap) AddTrapsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'AddTraps' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(addTrapsRequest(c, Picture, XOff, YOff, Traps), cookie)
+	return AddTrapsCookie{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 AddTrapsCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for AddTraps
+// addTrapsRequest writes a AddTraps request to a byte slice.
+func addTrapsRequest(c *xgb.Conn, Picture Picture, XOff int16, YOff int16, Traps []Trap) []byte {
+	size := xgb.Pad((12 + xgb.Pad((len(Traps) * 24))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 32 // 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(Picture))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(XOff))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(YOff))
+	b += 2
+
+	b += TrapListBytes(buf[b:], Traps)
+
+	return buf
+}
+
+// ChangePictureCookie is a cookie used only for ChangePicture requests.
+type ChangePictureCookie struct {
+	*xgb.Cookie
+}
+
+// ChangePicture sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func ChangePicture(c *xgb.Conn, Picture Picture, ValueMask uint32, ValueList []uint32) ChangePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'ChangePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(changePictureRequest(c, Picture, ValueMask, ValueList), cookie)
+	return ChangePictureCookie{cookie}
+}
+
+// ChangePictureChecked sends a checked request.
+// If an error occurs, it can be retrieved using ChangePictureCookie.Check()
+func ChangePictureChecked(c *xgb.Conn, Picture Picture, ValueMask uint32, ValueList []uint32) ChangePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'ChangePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(changePictureRequest(c, Picture, ValueMask, ValueList), cookie)
+	return ChangePictureCookie{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 ChangePictureCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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((12 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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:], uint32(Picture))
+	b += 4
+
+	xgb.Put32(buf[b:], ValueMask)
+	b += 4
+
+	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
+		xgb.Put32(buf[b:], ValueList[i])
+		b += 4
+	}
+	b = xgb.Pad(b)
+
+	return buf
+}
+
+// CompositeCookie is a cookie used only for Composite requests.
+type CompositeCookie struct {
+	*xgb.Cookie
+}
+
+// Composite sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func Composite(c *xgb.Conn, Op byte, Src Picture, Mask Picture, Dst Picture, SrcX int16, SrcY int16, MaskX int16, MaskY int16, DstX int16, DstY int16, Width uint16, Height uint16) CompositeCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Composite' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(compositeRequest(c, Op, Src, Mask, Dst, SrcX, SrcY, MaskX, MaskY, DstX, DstY, Width, Height), cookie)
+	return CompositeCookie{cookie}
+}
+
+// CompositeChecked sends a checked request.
+// If an error occurs, it can be retrieved using CompositeCookie.Check()
+func CompositeChecked(c *xgb.Conn, Op byte, Src Picture, Mask Picture, Dst Picture, SrcX int16, SrcY int16, MaskX int16, MaskY int16, DstX int16, DstY int16, Width uint16, Height uint16) CompositeCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Composite' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(compositeRequest(c, Op, Src, Mask, Dst, SrcX, SrcY, MaskX, MaskY, DstX, DstY, Width, Height), cookie)
+	return CompositeCookie{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 CompositeCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for Composite
+// compositeRequest writes a Composite request to a byte slice.
+func compositeRequest(c *xgb.Conn, Op byte, Src Picture, Mask Picture, Dst Picture, SrcX int16, SrcY int16, MaskX int16, MaskY int16, DstX int16, DstY int16, Width uint16, Height uint16) []byte {
+	size := 36
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Mask))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(MaskX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(MaskY))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(DstX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(DstY))
+	b += 2
+
+	xgb.Put16(buf[b:], Width)
+	b += 2
+
+	xgb.Put16(buf[b:], Height)
+	b += 2
+
+	return buf
+}
+
+// CompositeGlyphs16Cookie is a cookie used only for CompositeGlyphs16 requests.
+type CompositeGlyphs16Cookie struct {
+	*xgb.Cookie
+}
+
+// CompositeGlyphs16 sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CompositeGlyphs16(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs16Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs16' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(compositeGlyphs16Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs16Cookie{cookie}
+}
+
+// CompositeGlyphs16Checked sends a checked request.
+// If an error occurs, it can be retrieved using CompositeGlyphs16Cookie.Check()
+func CompositeGlyphs16Checked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs16Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs16' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(compositeGlyphs16Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs16Cookie{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 CompositeGlyphs16Cookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CompositeGlyphs16
+// compositeGlyphs16Request writes a CompositeGlyphs16 request to a byte slice.
+func compositeGlyphs16Request(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) []byte {
+	size := xgb.Pad((28 + xgb.Pad((len(Glyphcmds) * 1))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 24 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Glyphset))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	copy(buf[b:], Glyphcmds[:len(Glyphcmds)])
+	b += int(len(Glyphcmds))
+
+	return buf
+}
+
+// CompositeGlyphs32Cookie is a cookie used only for CompositeGlyphs32 requests.
+type CompositeGlyphs32Cookie struct {
+	*xgb.Cookie
+}
+
+// CompositeGlyphs32 sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CompositeGlyphs32(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs32Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs32' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(compositeGlyphs32Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs32Cookie{cookie}
+}
+
+// CompositeGlyphs32Checked sends a checked request.
+// If an error occurs, it can be retrieved using CompositeGlyphs32Cookie.Check()
+func CompositeGlyphs32Checked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs32Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs32' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(compositeGlyphs32Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs32Cookie{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 CompositeGlyphs32Cookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CompositeGlyphs32
+// compositeGlyphs32Request writes a CompositeGlyphs32 request to a byte slice.
+func compositeGlyphs32Request(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) []byte {
+	size := xgb.Pad((28 + xgb.Pad((len(Glyphcmds) * 1))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 25 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Glyphset))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	copy(buf[b:], Glyphcmds[:len(Glyphcmds)])
+	b += int(len(Glyphcmds))
+
+	return buf
+}
+
+// CompositeGlyphs8Cookie is a cookie used only for CompositeGlyphs8 requests.
+type CompositeGlyphs8Cookie struct {
+	*xgb.Cookie
+}
+
+// CompositeGlyphs8 sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CompositeGlyphs8(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs8Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs8' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(compositeGlyphs8Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs8Cookie{cookie}
+}
+
+// CompositeGlyphs8Checked sends a checked request.
+// If an error occurs, it can be retrieved using CompositeGlyphs8Cookie.Check()
+func CompositeGlyphs8Checked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) CompositeGlyphs8Cookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CompositeGlyphs8' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(compositeGlyphs8Request(c, Op, Src, Dst, MaskFormat, Glyphset, SrcX, SrcY, Glyphcmds), cookie)
+	return CompositeGlyphs8Cookie{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 CompositeGlyphs8Cookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CompositeGlyphs8
+// compositeGlyphs8Request writes a CompositeGlyphs8 request to a byte slice.
+func compositeGlyphs8Request(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, Glyphset Glyphset, SrcX int16, SrcY int16, Glyphcmds []byte) []byte {
+	size := xgb.Pad((28 + xgb.Pad((len(Glyphcmds) * 1))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 23 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Glyphset))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	copy(buf[b:], Glyphcmds[:len(Glyphcmds)])
+	b += int(len(Glyphcmds))
+
+	return buf
+}
+
+// CreateAnimCursorCookie is a cookie used only for CreateAnimCursor requests.
+type CreateAnimCursorCookie struct {
+	*xgb.Cookie
+}
+
+// CreateAnimCursor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateAnimCursor(c *xgb.Conn, Cid xproto.Cursor, Cursors []Animcursorelt) CreateAnimCursorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateAnimCursor' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createAnimCursorRequest(c, Cid, Cursors), cookie)
+	return CreateAnimCursorCookie{cookie}
+}
+
+// CreateAnimCursorChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateAnimCursorCookie.Check()
+func CreateAnimCursorChecked(c *xgb.Conn, Cid xproto.Cursor, Cursors []Animcursorelt) CreateAnimCursorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateAnimCursor' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createAnimCursorRequest(c, Cid, Cursors), cookie)
+	return CreateAnimCursorCookie{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 CreateAnimCursorCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CreateAnimCursor
+// createAnimCursorRequest writes a CreateAnimCursor request to a byte slice.
+func createAnimCursorRequest(c *xgb.Conn, Cid xproto.Cursor, Cursors []Animcursorelt) []byte {
+	size := xgb.Pad((8 + xgb.Pad((len(Cursors) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 31 // 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(Cid))
+	b += 4
+
+	b += AnimcursoreltListBytes(buf[b:], Cursors)
+
+	return buf
+}
+
+// CreateConicalGradientCookie is a cookie used only for CreateConicalGradient requests.
+type CreateConicalGradientCookie struct {
+	*xgb.Cookie
+}
+
+// CreateConicalGradient sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateConicalGradient(c *xgb.Conn, Picture Picture, Center Pointfix, Angle Fixed, NumStops uint32, Stops []Fixed, Colors []Color) CreateConicalGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateConicalGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createConicalGradientRequest(c, Picture, Center, Angle, NumStops, Stops, Colors), cookie)
+	return CreateConicalGradientCookie{cookie}
+}
+
+// CreateConicalGradientChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateConicalGradientCookie.Check()
+func CreateConicalGradientChecked(c *xgb.Conn, Picture Picture, Center Pointfix, Angle Fixed, NumStops uint32, Stops []Fixed, Colors []Color) CreateConicalGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateConicalGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createConicalGradientRequest(c, Picture, Center, Angle, NumStops, Stops, Colors), cookie)
+	return CreateConicalGradientCookie{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 CreateConicalGradientCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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))) + xgb.Pad((int(NumStops) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 36 // 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(Picture))
+	b += 4
+
+	{
+		structBytes := Center.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	xgb.Put32(buf[b:], uint32(Angle))
+	b += 4
+
+	xgb.Put32(buf[b:], NumStops)
+	b += 4
+
+	for i := 0; i < int(NumStops); i++ {
+		xgb.Put32(buf[b:], uint32(Stops[i]))
+		b += 4
+	}
+
+	b += ColorListBytes(buf[b:], Colors)
+
+	return buf
+}
+
+// CreateCursorCookie is a cookie used only for CreateCursor requests.
+type CreateCursorCookie struct {
+	*xgb.Cookie
+}
+
+// CreateCursor sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateCursor(c *xgb.Conn, Cid xproto.Cursor, Source Picture, X uint16, Y uint16) CreateCursorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateCursor' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createCursorRequest(c, Cid, Source, X, Y), cookie)
+	return CreateCursorCookie{cookie}
+}
+
+// CreateCursorChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateCursorCookie.Check()
+func CreateCursorChecked(c *xgb.Conn, Cid xproto.Cursor, Source Picture, X uint16, Y uint16) CreateCursorCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateCursor' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createCursorRequest(c, Cid, Source, X, Y), cookie)
+	return CreateCursorCookie{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 CreateCursorCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CreateCursor
+// createCursorRequest writes a CreateCursor request to a byte slice.
+func createCursorRequest(c *xgb.Conn, Cid xproto.Cursor, Source Picture, X uint16, Y uint16) []byte {
+	size := 16
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 27 // 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(Cid))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Source))
+	b += 4
+
+	xgb.Put16(buf[b:], X)
+	b += 2
+
+	xgb.Put16(buf[b:], Y)
+	b += 2
+
+	return buf
+}
+
+// CreateGlyphSetCookie is a cookie used only for CreateGlyphSet requests.
+type CreateGlyphSetCookie struct {
+	*xgb.Cookie
+}
+
+// CreateGlyphSet sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateGlyphSet(c *xgb.Conn, Gsid Glyphset, Format Pictformat) CreateGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createGlyphSetRequest(c, Gsid, Format), cookie)
+	return CreateGlyphSetCookie{cookie}
+}
+
+// CreateGlyphSetChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateGlyphSetCookie.Check()
+func CreateGlyphSetChecked(c *xgb.Conn, Gsid Glyphset, Format Pictformat) CreateGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createGlyphSetRequest(c, Gsid, Format), cookie)
+	return CreateGlyphSetCookie{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 CreateGlyphSetCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CreateGlyphSet
+// createGlyphSetRequest writes a CreateGlyphSet request to a byte slice.
+func createGlyphSetRequest(c *xgb.Conn, Gsid Glyphset, Format Pictformat) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 17 // 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(Gsid))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Format))
+	b += 4
+
+	return buf
+}
+
+// CreateLinearGradientCookie is a cookie used only for CreateLinearGradient requests.
+type CreateLinearGradientCookie struct {
+	*xgb.Cookie
+}
+
+// CreateLinearGradient sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateLinearGradient(c *xgb.Conn, Picture Picture, P1 Pointfix, P2 Pointfix, NumStops uint32, Stops []Fixed, Colors []Color) CreateLinearGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateLinearGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createLinearGradientRequest(c, Picture, P1, P2, NumStops, Stops, Colors), cookie)
+	return CreateLinearGradientCookie{cookie}
+}
+
+// CreateLinearGradientChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateLinearGradientCookie.Check()
+func CreateLinearGradientChecked(c *xgb.Conn, Picture Picture, P1 Pointfix, P2 Pointfix, NumStops uint32, Stops []Fixed, Colors []Color) CreateLinearGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateLinearGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createLinearGradientRequest(c, Picture, P1, P2, NumStops, Stops, Colors), cookie)
+	return CreateLinearGradientCookie{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 CreateLinearGradientCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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))) + xgb.Pad((int(NumStops) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 34 // 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(Picture))
+	b += 4
+
+	{
+		structBytes := P1.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := P2.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	xgb.Put32(buf[b:], NumStops)
+	b += 4
+
+	for i := 0; i < int(NumStops); i++ {
+		xgb.Put32(buf[b:], uint32(Stops[i]))
+		b += 4
+	}
+
+	b += ColorListBytes(buf[b:], Colors)
+
+	return buf
+}
+
+// CreatePictureCookie is a cookie used only for CreatePicture requests.
+type CreatePictureCookie struct {
+	*xgb.Cookie
+}
+
+// CreatePicture sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreatePicture(c *xgb.Conn, Pid Picture, Drawable xproto.Drawable, Format Pictformat, ValueMask uint32, ValueList []uint32) CreatePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreatePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createPictureRequest(c, Pid, Drawable, Format, ValueMask, ValueList), cookie)
+	return CreatePictureCookie{cookie}
+}
+
+// CreatePictureChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreatePictureCookie.Check()
+func CreatePictureChecked(c *xgb.Conn, Pid Picture, Drawable xproto.Drawable, Format Pictformat, ValueMask uint32, ValueList []uint32) CreatePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreatePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createPictureRequest(c, Pid, Drawable, Format, ValueMask, ValueList), cookie)
+	return CreatePictureCookie{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 CreatePictureCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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((20 + xgb.Pad((4 * xgb.PopCount(int(ValueMask))))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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:], uint32(Pid))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Drawable))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Format))
+	b += 4
+
+	xgb.Put32(buf[b:], ValueMask)
+	b += 4
+
+	for i := 0; i < xgb.PopCount(int(ValueMask)); i++ {
+		xgb.Put32(buf[b:], ValueList[i])
+		b += 4
+	}
+	b = xgb.Pad(b)
+
+	return buf
+}
+
+// CreateRadialGradientCookie is a cookie used only for CreateRadialGradient requests.
+type CreateRadialGradientCookie struct {
+	*xgb.Cookie
+}
+
+// CreateRadialGradient sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateRadialGradient(c *xgb.Conn, Picture Picture, Inner Pointfix, Outer Pointfix, InnerRadius Fixed, OuterRadius Fixed, NumStops uint32, Stops []Fixed, Colors []Color) CreateRadialGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateRadialGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createRadialGradientRequest(c, Picture, Inner, Outer, InnerRadius, OuterRadius, NumStops, Stops, Colors), cookie)
+	return CreateRadialGradientCookie{cookie}
+}
+
+// CreateRadialGradientChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateRadialGradientCookie.Check()
+func CreateRadialGradientChecked(c *xgb.Conn, Picture Picture, Inner Pointfix, Outer Pointfix, InnerRadius Fixed, OuterRadius Fixed, NumStops uint32, Stops []Fixed, Colors []Color) CreateRadialGradientCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateRadialGradient' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createRadialGradientRequest(c, Picture, Inner, Outer, InnerRadius, OuterRadius, NumStops, Stops, Colors), cookie)
+	return CreateRadialGradientCookie{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 CreateRadialGradientCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// 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))) + xgb.Pad((int(NumStops) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 35 // 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(Picture))
+	b += 4
+
+	{
+		structBytes := Inner.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	{
+		structBytes := Outer.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	xgb.Put32(buf[b:], uint32(InnerRadius))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(OuterRadius))
+	b += 4
+
+	xgb.Put32(buf[b:], NumStops)
+	b += 4
+
+	for i := 0; i < int(NumStops); i++ {
+		xgb.Put32(buf[b:], uint32(Stops[i]))
+		b += 4
+	}
+
+	b += ColorListBytes(buf[b:], Colors)
+
+	return buf
+}
+
+// CreateSolidFillCookie is a cookie used only for CreateSolidFill requests.
+type CreateSolidFillCookie struct {
+	*xgb.Cookie
+}
+
+// CreateSolidFill sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func CreateSolidFill(c *xgb.Conn, Picture Picture, Color Color) CreateSolidFillCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateSolidFill' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(createSolidFillRequest(c, Picture, Color), cookie)
+	return CreateSolidFillCookie{cookie}
+}
+
+// CreateSolidFillChecked sends a checked request.
+// If an error occurs, it can be retrieved using CreateSolidFillCookie.Check()
+func CreateSolidFillChecked(c *xgb.Conn, Picture Picture, Color Color) CreateSolidFillCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'CreateSolidFill' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(createSolidFillRequest(c, Picture, Color), cookie)
+	return CreateSolidFillCookie{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 CreateSolidFillCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for CreateSolidFill
+// createSolidFillRequest writes a CreateSolidFill request to a byte slice.
+func createSolidFillRequest(c *xgb.Conn, Picture Picture, Color Color) []byte {
+	size := 16
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 33 // 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(Picture))
+	b += 4
+
+	{
+		structBytes := Color.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf
+}
+
+// FillRectanglesCookie is a cookie used only for FillRectangles requests.
+type FillRectanglesCookie struct {
+	*xgb.Cookie
+}
+
+// FillRectangles sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func FillRectangles(c *xgb.Conn, Op byte, Dst Picture, Color Color, Rects []xproto.Rectangle) FillRectanglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FillRectangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(fillRectanglesRequest(c, Op, Dst, Color, Rects), cookie)
+	return FillRectanglesCookie{cookie}
+}
+
+// FillRectanglesChecked sends a checked request.
+// If an error occurs, it can be retrieved using FillRectanglesCookie.Check()
+func FillRectanglesChecked(c *xgb.Conn, Op byte, Dst Picture, Color Color, Rects []xproto.Rectangle) FillRectanglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FillRectangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(fillRectanglesRequest(c, Op, Dst, Color, Rects), cookie)
+	return FillRectanglesCookie{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 FillRectanglesCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for FillRectangles
+// fillRectanglesRequest writes a FillRectangles request to a byte slice.
+func fillRectanglesRequest(c *xgb.Conn, Op byte, Dst Picture, Color Color, Rects []xproto.Rectangle) []byte {
+	size := xgb.Pad((20 + xgb.Pad((len(Rects) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 26 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	{
+		structBytes := Color.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	b += xproto.RectangleListBytes(buf[b:], Rects)
+
+	return buf
+}
+
+// FreeGlyphSetCookie is a cookie used only for FreeGlyphSet requests.
+type FreeGlyphSetCookie struct {
+	*xgb.Cookie
+}
+
+// FreeGlyphSet sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func FreeGlyphSet(c *xgb.Conn, Glyphset Glyphset) FreeGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreeGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(freeGlyphSetRequest(c, Glyphset), cookie)
+	return FreeGlyphSetCookie{cookie}
+}
+
+// FreeGlyphSetChecked sends a checked request.
+// If an error occurs, it can be retrieved using FreeGlyphSetCookie.Check()
+func FreeGlyphSetChecked(c *xgb.Conn, Glyphset Glyphset) FreeGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreeGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(freeGlyphSetRequest(c, Glyphset), cookie)
+	return FreeGlyphSetCookie{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 FreeGlyphSetCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for FreeGlyphSet
+// freeGlyphSetRequest writes a FreeGlyphSet request to a byte slice.
+func freeGlyphSetRequest(c *xgb.Conn, Glyphset Glyphset) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 19 // 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(Glyphset))
+	b += 4
+
+	return buf
+}
+
+// FreeGlyphsCookie is a cookie used only for FreeGlyphs requests.
+type FreeGlyphsCookie struct {
+	*xgb.Cookie
+}
+
+// FreeGlyphs sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func FreeGlyphs(c *xgb.Conn, Glyphset Glyphset, Glyphs []Glyph) FreeGlyphsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreeGlyphs' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(freeGlyphsRequest(c, Glyphset, Glyphs), cookie)
+	return FreeGlyphsCookie{cookie}
+}
+
+// FreeGlyphsChecked sends a checked request.
+// If an error occurs, it can be retrieved using FreeGlyphsCookie.Check()
+func FreeGlyphsChecked(c *xgb.Conn, Glyphset Glyphset, Glyphs []Glyph) FreeGlyphsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreeGlyphs' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(freeGlyphsRequest(c, Glyphset, Glyphs), cookie)
+	return FreeGlyphsCookie{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 FreeGlyphsCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for FreeGlyphs
+// freeGlyphsRequest writes a FreeGlyphs request to a byte slice.
+func freeGlyphsRequest(c *xgb.Conn, Glyphset Glyphset, Glyphs []Glyph) []byte {
+	size := xgb.Pad((8 + xgb.Pad((len(Glyphs) * 4))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 22 // 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(Glyphset))
+	b += 4
+
+	for i := 0; i < int(len(Glyphs)); i++ {
+		xgb.Put32(buf[b:], uint32(Glyphs[i]))
+		b += 4
+	}
+
+	return buf
+}
+
+// FreePictureCookie is a cookie used only for FreePicture requests.
+type FreePictureCookie struct {
+	*xgb.Cookie
+}
+
+// FreePicture sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func FreePicture(c *xgb.Conn, Picture Picture) FreePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(freePictureRequest(c, Picture), cookie)
+	return FreePictureCookie{cookie}
+}
+
+// FreePictureChecked sends a checked request.
+// If an error occurs, it can be retrieved using FreePictureCookie.Check()
+func FreePictureChecked(c *xgb.Conn, Picture Picture) FreePictureCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'FreePicture' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(freePictureRequest(c, Picture), cookie)
+	return FreePictureCookie{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 FreePictureCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for FreePicture
+// freePictureRequest writes a FreePicture request to a byte slice.
+func freePictureRequest(c *xgb.Conn, Picture Picture) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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:], uint32(Picture))
+	b += 4
+
+	return buf
+}
+
+// QueryFiltersCookie is a cookie used only for QueryFilters requests.
+type QueryFiltersCookie struct {
+	*xgb.Cookie
+}
+
+// QueryFilters sends a checked request.
+// If an error occurs, it will be returned with the reply by calling QueryFiltersCookie.Reply()
+func QueryFilters(c *xgb.Conn, Drawable xproto.Drawable) QueryFiltersCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryFilters' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryFiltersRequest(c, Drawable), cookie)
+	return QueryFiltersCookie{cookie}
+}
+
+// QueryFiltersUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func QueryFiltersUnchecked(c *xgb.Conn, Drawable xproto.Drawable) QueryFiltersCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryFilters' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryFiltersRequest(c, Drawable), cookie)
+	return QueryFiltersCookie{cookie}
+}
+
+// QueryFiltersReply represents the data returned from a QueryFilters request.
+type QueryFiltersReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	NumAliases uint32
+	NumFilters uint32
+	// padding: 16 bytes
+	Aliases []uint16     // size: xgb.Pad((int(NumAliases) * 2))
+	Filters []xproto.Str // size: xproto.StrListSize(Filters)
+}
+
+// Reply blocks and returns the reply data for a QueryFilters request.
+func (cook QueryFiltersCookie) Reply() (*QueryFiltersReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return queryFiltersReply(buf), nil
+}
+
+// queryFiltersReply reads a byte slice into a QueryFiltersReply value.
+func queryFiltersReply(buf []byte) *QueryFiltersReply {
+	v := new(QueryFiltersReply)
+	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.NumAliases = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NumFilters = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 16 // padding
+
+	v.Aliases = make([]uint16, v.NumAliases)
+	for i := 0; i < int(v.NumAliases); i++ {
+		v.Aliases[i] = xgb.Get16(buf[b:])
+		b += 2
+	}
+
+	v.Filters = make([]xproto.Str, v.NumFilters)
+	b += xproto.StrReadList(buf[b:], v.Filters)
+
+	return v
+}
+
+// Write request to wire for QueryFilters
+// queryFiltersRequest writes a QueryFilters request to a byte slice.
+func queryFiltersRequest(c *xgb.Conn, Drawable xproto.Drawable) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 29 // 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(Drawable))
+	b += 4
+
+	return buf
+}
+
+// QueryPictFormatsCookie is a cookie used only for QueryPictFormats requests.
+type QueryPictFormatsCookie struct {
+	*xgb.Cookie
+}
+
+// QueryPictFormats sends a checked request.
+// If an error occurs, it will be returned with the reply by calling QueryPictFormatsCookie.Reply()
+func QueryPictFormats(c *xgb.Conn) QueryPictFormatsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryPictFormats' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryPictFormatsRequest(c), cookie)
+	return QueryPictFormatsCookie{cookie}
+}
+
+// QueryPictFormatsUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func QueryPictFormatsUnchecked(c *xgb.Conn) QueryPictFormatsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryPictFormats' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryPictFormatsRequest(c), cookie)
+	return QueryPictFormatsCookie{cookie}
+}
+
+// QueryPictFormatsReply represents the data returned from a QueryPictFormats request.
+type QueryPictFormatsReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	NumFormats  uint32
+	NumScreens  uint32
+	NumDepths   uint32
+	NumVisuals  uint32
+	NumSubpixel uint32
+	// padding: 4 bytes
+	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.
+func (cook QueryPictFormatsCookie) Reply() (*QueryPictFormatsReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return queryPictFormatsReply(buf), nil
+}
+
+// queryPictFormatsReply reads a byte slice into a QueryPictFormatsReply value.
+func queryPictFormatsReply(buf []byte) *QueryPictFormatsReply {
+	v := new(QueryPictFormatsReply)
+	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.NumFormats = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NumScreens = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NumDepths = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NumVisuals = xgb.Get32(buf[b:])
+	b += 4
+
+	v.NumSubpixel = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 4 // padding
+
+	v.Formats = make([]Pictforminfo, v.NumFormats)
+	b += PictforminfoReadList(buf[b:], v.Formats)
+
+	v.Screens = make([]Pictscreen, v.NumScreens)
+	b += PictscreenReadList(buf[b:], v.Screens)
+
+	v.Subpixels = make([]uint32, v.NumSubpixel)
+	for i := 0; i < int(v.NumSubpixel); i++ {
+		v.Subpixels[i] = xgb.Get32(buf[b:])
+		b += 4
+	}
+
+	return v
+}
+
+// Write request to wire for QueryPictFormats
+// queryPictFormatsRequest writes a QueryPictFormats request to a byte slice.
+func queryPictFormatsRequest(c *xgb.Conn) []byte {
+	size := 4
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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
+
+	return buf
+}
+
+// QueryPictIndexValuesCookie is a cookie used only for QueryPictIndexValues requests.
+type QueryPictIndexValuesCookie struct {
+	*xgb.Cookie
+}
+
+// QueryPictIndexValues sends a checked request.
+// If an error occurs, it will be returned with the reply by calling QueryPictIndexValuesCookie.Reply()
+func QueryPictIndexValues(c *xgb.Conn, Format Pictformat) QueryPictIndexValuesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryPictIndexValues' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryPictIndexValuesRequest(c, Format), cookie)
+	return QueryPictIndexValuesCookie{cookie}
+}
+
+// QueryPictIndexValuesUnchecked sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func QueryPictIndexValuesUnchecked(c *xgb.Conn, Format Pictformat) QueryPictIndexValuesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryPictIndexValues' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryPictIndexValuesRequest(c, Format), cookie)
+	return QueryPictIndexValuesCookie{cookie}
+}
+
+// QueryPictIndexValuesReply represents the data returned from a QueryPictIndexValues request.
+type QueryPictIndexValuesReply struct {
+	Sequence uint16 // sequence number of the request for this reply
+	Length   uint32 // number of bytes in this reply
+	// padding: 1 bytes
+	NumValues uint32
+	// padding: 20 bytes
+	Values []Indexvalue // size: xgb.Pad((int(NumValues) * 12))
+}
+
+// Reply blocks and returns the reply data for a QueryPictIndexValues request.
+func (cook QueryPictIndexValuesCookie) Reply() (*QueryPictIndexValuesReply, error) {
+	buf, err := cook.Cookie.Reply()
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return queryPictIndexValuesReply(buf), nil
+}
+
+// queryPictIndexValuesReply reads a byte slice into a QueryPictIndexValuesReply value.
+func queryPictIndexValuesReply(buf []byte) *QueryPictIndexValuesReply {
+	v := new(QueryPictIndexValuesReply)
+	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.NumValues = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 20 // padding
+
+	v.Values = make([]Indexvalue, v.NumValues)
+	b += IndexvalueReadList(buf[b:], v.Values)
+
+	return v
+}
+
+// Write request to wire for QueryPictIndexValues
+// queryPictIndexValuesRequest writes a QueryPictIndexValues request to a byte slice.
+func queryPictIndexValuesRequest(c *xgb.Conn, Format Pictformat) []byte {
+	size := 8
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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:], uint32(Format))
+	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, ClientMajorVersion uint32, ClientMinorVersion uint32) QueryVersionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, true)
+	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), 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, ClientMajorVersion uint32, ClientMinorVersion uint32) QueryVersionCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, true)
+	c.NewRequest(queryVersionRequest(c, ClientMajorVersion, ClientMinorVersion), 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
+	MajorVersion uint32
+	MinorVersion uint32
+	// padding: 16 bytes
+}
+
+// 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.MajorVersion = xgb.Get32(buf[b:])
+	b += 4
+
+	v.MinorVersion = xgb.Get32(buf[b:])
+	b += 4
+
+	b += 16 // padding
+
+	return v
+}
+
+// Write request to wire for QueryVersion
+// queryVersionRequest writes a QueryVersion request to a byte slice.
+func queryVersionRequest(c *xgb.Conn, ClientMajorVersion uint32, ClientMinorVersion uint32) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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
+
+	xgb.Put32(buf[b:], ClientMajorVersion)
+	b += 4
+
+	xgb.Put32(buf[b:], ClientMinorVersion)
+	b += 4
+
+	return buf
+}
+
+// ReferenceGlyphSetCookie is a cookie used only for ReferenceGlyphSet requests.
+type ReferenceGlyphSetCookie struct {
+	*xgb.Cookie
+}
+
+// ReferenceGlyphSet sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func ReferenceGlyphSet(c *xgb.Conn, Gsid Glyphset, Existing Glyphset) ReferenceGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'ReferenceGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(referenceGlyphSetRequest(c, Gsid, Existing), cookie)
+	return ReferenceGlyphSetCookie{cookie}
+}
+
+// ReferenceGlyphSetChecked sends a checked request.
+// If an error occurs, it can be retrieved using ReferenceGlyphSetCookie.Check()
+func ReferenceGlyphSetChecked(c *xgb.Conn, Gsid Glyphset, Existing Glyphset) ReferenceGlyphSetCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'ReferenceGlyphSet' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(referenceGlyphSetRequest(c, Gsid, Existing), cookie)
+	return ReferenceGlyphSetCookie{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 ReferenceGlyphSetCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for ReferenceGlyphSet
+// referenceGlyphSetRequest writes a ReferenceGlyphSet request to a byte slice.
+func referenceGlyphSetRequest(c *xgb.Conn, Gsid Glyphset, Existing Glyphset) []byte {
+	size := 12
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 18 // 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(Gsid))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Existing))
+	b += 4
+
+	return buf
+}
+
+// SetPictureClipRectanglesCookie is a cookie used only for SetPictureClipRectangles requests.
+type SetPictureClipRectanglesCookie struct {
+	*xgb.Cookie
+}
+
+// SetPictureClipRectangles sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func SetPictureClipRectangles(c *xgb.Conn, Picture Picture, ClipXOrigin int16, ClipYOrigin int16, Rectangles []xproto.Rectangle) SetPictureClipRectanglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureClipRectangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(setPictureClipRectanglesRequest(c, Picture, ClipXOrigin, ClipYOrigin, Rectangles), cookie)
+	return SetPictureClipRectanglesCookie{cookie}
+}
+
+// SetPictureClipRectanglesChecked sends a checked request.
+// If an error occurs, it can be retrieved using SetPictureClipRectanglesCookie.Check()
+func SetPictureClipRectanglesChecked(c *xgb.Conn, Picture Picture, ClipXOrigin int16, ClipYOrigin int16, Rectangles []xproto.Rectangle) SetPictureClipRectanglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureClipRectangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(setPictureClipRectanglesRequest(c, Picture, ClipXOrigin, ClipYOrigin, Rectangles), cookie)
+	return SetPictureClipRectanglesCookie{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 SetPictureClipRectanglesCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for SetPictureClipRectangles
+// setPictureClipRectanglesRequest writes a SetPictureClipRectangles request to a byte slice.
+func setPictureClipRectanglesRequest(c *xgb.Conn, Picture Picture, ClipXOrigin int16, ClipYOrigin int16, Rectangles []xproto.Rectangle) []byte {
+	size := xgb.Pad((12 + xgb.Pad((len(Rectangles) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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:], uint32(Picture))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(ClipXOrigin))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(ClipYOrigin))
+	b += 2
+
+	b += xproto.RectangleListBytes(buf[b:], Rectangles)
+
+	return buf
+}
+
+// SetPictureFilterCookie is a cookie used only for SetPictureFilter requests.
+type SetPictureFilterCookie struct {
+	*xgb.Cookie
+}
+
+// SetPictureFilter sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func SetPictureFilter(c *xgb.Conn, Picture Picture, FilterLen uint16, Filter string, Values []Fixed) SetPictureFilterCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureFilter' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(setPictureFilterRequest(c, Picture, FilterLen, Filter, Values), cookie)
+	return SetPictureFilterCookie{cookie}
+}
+
+// SetPictureFilterChecked sends a checked request.
+// If an error occurs, it can be retrieved using SetPictureFilterCookie.Check()
+func SetPictureFilterChecked(c *xgb.Conn, Picture Picture, FilterLen uint16, Filter string, Values []Fixed) SetPictureFilterCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureFilter' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(setPictureFilterRequest(c, Picture, FilterLen, Filter, Values), cookie)
+	return SetPictureFilterCookie{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 SetPictureFilterCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for SetPictureFilter
+// setPictureFilterRequest writes a SetPictureFilter request to a byte slice.
+func setPictureFilterRequest(c *xgb.Conn, Picture Picture, FilterLen uint16, Filter string, Values []Fixed) []byte {
+	size := xgb.Pad((((12 + xgb.Pad((int(FilterLen) * 1))) + 4) + xgb.Pad((len(Values) * 4))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 30 // request opcode
+	b += 1
+
+	blen := b
+	b += 2
+
+	xgb.Put32(buf[b:], uint32(Picture))
+	b += 4
+
+	xgb.Put16(buf[b:], FilterLen)
+	b += 2
+
+	b += 2 // padding
+
+	copy(buf[b:], Filter[:FilterLen])
+	b += int(FilterLen)
+
+	b = (b + 3) & ^3 // alignment gap
+
+	for i := 0; i < int(len(Values)); i++ {
+		xgb.Put32(buf[b:], uint32(Values[i]))
+		b += 4
+	}
+
+	b = xgb.Pad(b)
+	xgb.Put16(buf[blen:], uint16(b/4)) // write request size in 4-byte units
+	return buf[:b]
+}
+
+// SetPictureTransformCookie is a cookie used only for SetPictureTransform requests.
+type SetPictureTransformCookie struct {
+	*xgb.Cookie
+}
+
+// SetPictureTransform sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func SetPictureTransform(c *xgb.Conn, Picture Picture, Transform Transform) SetPictureTransformCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureTransform' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(setPictureTransformRequest(c, Picture, Transform), cookie)
+	return SetPictureTransformCookie{cookie}
+}
+
+// SetPictureTransformChecked sends a checked request.
+// If an error occurs, it can be retrieved using SetPictureTransformCookie.Check()
+func SetPictureTransformChecked(c *xgb.Conn, Picture Picture, Transform Transform) SetPictureTransformCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'SetPictureTransform' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(setPictureTransformRequest(c, Picture, Transform), cookie)
+	return SetPictureTransformCookie{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 SetPictureTransformCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for SetPictureTransform
+// setPictureTransformRequest writes a SetPictureTransform request to a byte slice.
+func setPictureTransformRequest(c *xgb.Conn, Picture Picture, Transform Transform) []byte {
+	size := 44
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 28 // 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(Picture))
+	b += 4
+
+	{
+		structBytes := Transform.Bytes()
+		copy(buf[b:], structBytes)
+		b += len(structBytes)
+	}
+
+	return buf
+}
+
+// TrapezoidsCookie is a cookie used only for Trapezoids requests.
+type TrapezoidsCookie struct {
+	*xgb.Cookie
+}
+
+// Trapezoids sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func Trapezoids(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Traps []Trapezoid) TrapezoidsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Trapezoids' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(trapezoidsRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Traps), cookie)
+	return TrapezoidsCookie{cookie}
+}
+
+// TrapezoidsChecked sends a checked request.
+// If an error occurs, it can be retrieved using TrapezoidsCookie.Check()
+func TrapezoidsChecked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Traps []Trapezoid) TrapezoidsCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Trapezoids' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(trapezoidsRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Traps), cookie)
+	return TrapezoidsCookie{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 TrapezoidsCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for Trapezoids
+// trapezoidsRequest writes a Trapezoids request to a byte slice.
+func trapezoidsRequest(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Traps []Trapezoid) []byte {
+	size := xgb.Pad((24 + xgb.Pad((len(Traps) * 40))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	b += TrapezoidListBytes(buf[b:], Traps)
+
+	return buf
+}
+
+// TriFanCookie is a cookie used only for TriFan requests.
+type TriFanCookie struct {
+	*xgb.Cookie
+}
+
+// TriFan sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func TriFan(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) TriFanCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'TriFan' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(triFanRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Points), cookie)
+	return TriFanCookie{cookie}
+}
+
+// TriFanChecked sends a checked request.
+// If an error occurs, it can be retrieved using TriFanCookie.Check()
+func TriFanChecked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) TriFanCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'TriFan' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(triFanRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Points), cookie)
+	return TriFanCookie{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 TriFanCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for TriFan
+// triFanRequest writes a TriFan request to a byte slice.
+func triFanRequest(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) []byte {
+	size := xgb.Pad((24 + xgb.Pad((len(Points) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 13 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	b += PointfixListBytes(buf[b:], Points)
+
+	return buf
+}
+
+// TriStripCookie is a cookie used only for TriStrip requests.
+type TriStripCookie struct {
+	*xgb.Cookie
+}
+
+// TriStrip sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func TriStrip(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) TriStripCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'TriStrip' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(triStripRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Points), cookie)
+	return TriStripCookie{cookie}
+}
+
+// TriStripChecked sends a checked request.
+// If an error occurs, it can be retrieved using TriStripCookie.Check()
+func TriStripChecked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) TriStripCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'TriStrip' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(triStripRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Points), cookie)
+	return TriStripCookie{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 TriStripCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for TriStrip
+// triStripRequest writes a TriStrip request to a byte slice.
+func triStripRequest(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Points []Pointfix) []byte {
+	size := xgb.Pad((24 + xgb.Pad((len(Points) * 8))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	c.ExtLock.RUnlock()
+	b += 1
+
+	buf[b] = 12 // request opcode
+	b += 1
+
+	xgb.Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
+	b += 2
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	b += PointfixListBytes(buf[b:], Points)
+
+	return buf
+}
+
+// TrianglesCookie is a cookie used only for Triangles requests.
+type TrianglesCookie struct {
+	*xgb.Cookie
+}
+
+// Triangles sends an unchecked request.
+// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
+func Triangles(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Triangles []Triangle) TrianglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Triangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(false, false)
+	c.NewRequest(trianglesRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Triangles), cookie)
+	return TrianglesCookie{cookie}
+}
+
+// TrianglesChecked sends a checked request.
+// If an error occurs, it can be retrieved using TrianglesCookie.Check()
+func TrianglesChecked(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Triangles []Triangle) TrianglesCookie {
+	c.ExtLock.RLock()
+	defer c.ExtLock.RUnlock()
+	if _, ok := c.Extensions["RENDER"]; !ok {
+		panic("Cannot issue request 'Triangles' using the uninitialized extension 'RENDER'. render.Init(connObj) must be called first.")
+	}
+	cookie := c.NewCookie(true, false)
+	c.NewRequest(trianglesRequest(c, Op, Src, Dst, MaskFormat, SrcX, SrcY, Triangles), cookie)
+	return TrianglesCookie{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 TrianglesCookie) Check() error {
+	return cook.Cookie.Check()
+}
+
+// Write request to wire for Triangles
+// trianglesRequest writes a Triangles request to a byte slice.
+func trianglesRequest(c *xgb.Conn, Op byte, Src Picture, Dst Picture, MaskFormat Pictformat, SrcX int16, SrcY int16, Triangles []Triangle) []byte {
+	size := xgb.Pad((24 + xgb.Pad((len(Triangles) * 24))))
+	b := 0
+	buf := make([]byte, size)
+
+	c.ExtLock.RLock()
+	buf[b] = c.Extensions["RENDER"]
+	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
+
+	buf[b] = Op
+	b += 1
+
+	b += 3 // padding
+
+	xgb.Put32(buf[b:], uint32(Src))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(Dst))
+	b += 4
+
+	xgb.Put32(buf[b:], uint32(MaskFormat))
+	b += 4
+
+	xgb.Put16(buf[b:], uint16(SrcX))
+	b += 2
+
+	xgb.Put16(buf[b:], uint16(SrcY))
+	b += 2
+
+	b += TriangleListBytes(buf[b:], Triangles)
+
+	return buf
+}