diff --git a/cmd/go.mod b/cmd/go.mod
index dc851223..f8e71ac7 100644
--- a/cmd/go.mod
+++ b/cmd/go.mod
@@ -3,7 +3,7 @@ module gioui.org/cmd
 go 1.13
 
 require (
-	gioui.org v0.0.0-20200207203519-d2d495416a91
+	gioui.org v0.0.0-20200210172258-ef9459c7fde2
 	github.com/chromedp/cdproto v0.0.0-20191114225735-6626966fbae4
 	github.com/chromedp/chromedp v0.5.2
 	golang.org/x/image v0.0.0-20190802002840-cff245a6509b
diff --git a/cmd/go.sum b/cmd/go.sum
index bf8cc36e..3f780346 100644
--- a/cmd/go.sum
+++ b/cmd/go.sum
@@ -1,6 +1,6 @@
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-gioui.org v0.0.0-20200207203519-d2d495416a91 h1:wJQ6Js+oyhxj9U+ZePGh+z3E0kr7kuSovHR940He0Xc=
-gioui.org v0.0.0-20200207203519-d2d495416a91/go.mod h1:AHI9rFr6AEEHCb8EPVtb/p5M+NMJRKH58IOp8O3Je04=
+gioui.org v0.0.0-20200210172258-ef9459c7fde2 h1:eEXOqOxjMcIxGs6KbEWdu+Dj9lHgvoloeUDj/8Sf6t4=
+gioui.org v0.0.0-20200210172258-ef9459c7fde2/go.mod h1:AHI9rFr6AEEHCb8EPVtb/p5M+NMJRKH58IOp8O3Je04=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802 h1:1BDTz0u9nC3//pOCMdNH+CiXJVYJh5UQNCOBG7jbELc=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/chromedp/cdproto v0.0.0-20191114225735-6626966fbae4 h1:QD3KxSJ59L2lxG6MXBjNHxiQO2RmxTQ3XcK+wO44WOg=
diff --git a/example/glfw/main.go b/example/glfw/main.go
index b9c503b8..b806a697 100644
--- a/example/glfw/main.go
+++ b/example/glfw/main.go
@@ -65,7 +65,11 @@ func main() {
 	var queue router.Router
 	gtx := layout.NewContext(&queue)
 	th := material.NewTheme()
-	gpu, err := gpu.New(f)
+	backend, err := giogl.NewBackend(f)
+	if err != nil {
+		log.Fatal(err)
+	}
+	gpu, err := gpu.New(backend)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -177,10 +181,6 @@ func (f *goglFunctions) BindFramebuffer(target giogl.Enum, fb giogl.Framebuffer)
 	gl.BindFramebuffer(uint32(target), uint32(fb.V))
 }
 
-func (f *goglFunctions) BindRenderbuffer(target giogl.Enum, rb giogl.Renderbuffer) {
-	gl.BindRenderbuffer(uint32(target), uint32(rb.V))
-}
-
 func (f *goglFunctions) BindTexture(target giogl.Enum, t giogl.Texture) {
 	gl.BindTexture(uint32(target), uint32(t.V))
 }
@@ -239,12 +239,6 @@ func (f *goglFunctions) CreateQuery() giogl.Query {
 	return giogl.Query{uint(q)}
 }
 
-func (f *goglFunctions) CreateRenderbuffer() giogl.Renderbuffer {
-	var rb uint32
-	gl.GenRenderbuffers(1, &rb)
-	return giogl.Renderbuffer{uint(rb)}
-}
-
 func (f *goglFunctions) CreateShader(ty giogl.Enum) giogl.Shader {
 	return giogl.Shader{uint(gl.CreateShader(uint32(ty)))}
 }
@@ -274,11 +268,6 @@ func (f *goglFunctions) DeleteQuery(query giogl.Query) {
 	gl.DeleteQueries(1, &q)
 }
 
-func (f *goglFunctions) DeleteRenderbuffer(v giogl.Renderbuffer) {
-	rb := uint32(v.V)
-	gl.DeleteRenderbuffers(1, &rb)
-}
-
 func (f *goglFunctions) DeleteShader(s giogl.Shader) {
 	gl.DeleteShader(uint32(s.V))
 }
@@ -324,14 +313,6 @@ func (f *goglFunctions) EndQuery(target giogl.Enum) {
 	gl.EndQuery(uint32(target))
 }
 
-func (f *goglFunctions) Finish() {
-	gl.Finish()
-}
-
-func (f *goglFunctions) FramebufferRenderbuffer(target, attachment, renderbuffertarget giogl.Enum, renderbuffer giogl.Renderbuffer) {
-	gl.FramebufferRenderbuffer(uint32(target), uint32(attachment), uint32(renderbuffertarget), uint32(renderbuffer.V))
-}
-
 func (f *goglFunctions) FramebufferTexture2D(target, attachment, texTarget giogl.Enum, t giogl.Texture, level int) {
 	gl.FramebufferTexture2D(uint32(target), uint32(attachment), uint32(texTarget), uint32(t.V), int32(level))
 }
@@ -346,18 +327,6 @@ func (f *goglFunctions) GetError() giogl.Enum {
 	return giogl.Enum(gl.GetError())
 }
 
-func (f *goglFunctions) GetRenderbufferParameteri(target, pname giogl.Enum) int {
-	var p [100]int32
-	gl.GetRenderbufferParameteriv(uint32(target), uint32(pname), &p[0])
-	return int(p[0])
-}
-
-func (f *goglFunctions) GetFramebufferAttachmentParameteri(target, attachment, pname giogl.Enum) int {
-	var p [100]int32
-	gl.GetFramebufferAttachmentParameteriv(uint32(target), uint32(attachment), uint32(pname), &p[0])
-	return int(p[0])
-}
-
 func (f *goglFunctions) GetInteger(pname giogl.Enum) int {
 	var p [100]int32
 	gl.GetIntegerv(uint32(pname), &p[0])
@@ -427,22 +396,6 @@ func (f *goglFunctions) LinkProgram(p giogl.Program) {
 	gl.LinkProgram(uint32(p.V))
 }
 
-func (f *goglFunctions) PixelStorei(pname giogl.Enum, param int32) {
-	gl.PixelStorei(uint32(pname), param)
-}
-
-func (f *goglFunctions) ReadPixels(x, y, width, height int, format, ty giogl.Enum, data []byte) {
-	gl.ReadPixels(int32(x), int32(y), int32(width), int32(height), uint32(format), uint32(ty), unsafe.Pointer(&data[0]))
-}
-
-func (f *goglFunctions) RenderbufferStorage(target, internalformat giogl.Enum, width, height int) {
-	gl.RenderbufferStorage(uint32(target), uint32(internalformat), int32(width), int32(height))
-}
-
-func (f *goglFunctions) Scissor(x, y, width, height int32) {
-	gl.Scissor(x, y, width, height)
-}
-
 func (f *goglFunctions) ShaderSource(s giogl.Shader, src string) {
 	csources, free := gl.Strs(src + "\x00")
 	gl.ShaderSource(uint32(s.V), 1, csources, nil)
@@ -457,10 +410,6 @@ func (f *goglFunctions) TexImage2D(target giogl.Enum, level int, internalFormat
 	gl.TexImage2D(uint32(target), int32(level), int32(internalFormat), int32(width), int32(height), 0, uint32(format), uint32(ty), p)
 }
 
-func (f *goglFunctions) TexSubImage2D(target giogl.Enum, level int, x, y, width, height int, format, ty giogl.Enum, data []byte) {
-	gl.TexSubImage2D(uint32(target), int32(level), int32(x), int32(y), int32(width), int32(height), uint32(format), uint32(ty), unsafe.Pointer(&data[0]))
-}
-
 func (f *goglFunctions) TexParameteri(target, pname giogl.Enum, param int) {
 	gl.TexParameteri(uint32(target), uint32(pname), int32(param))
 }
diff --git a/example/go.mod b/example/go.mod
index 2f1682de..5be47ef9 100644
--- a/example/go.mod
+++ b/example/go.mod
@@ -3,7 +3,7 @@ module gioui.org/example
 go 1.13
 
 require (
-	gioui.org v0.0.0-20200207203519-d2d495416a91
+	gioui.org v0.0.0-20200210172258-ef9459c7fde2
 	github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7
 	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72
 	github.com/google/go-github/v24 v24.0.1
diff --git a/example/go.sum b/example/go.sum
index f7a791f8..c07f2749 100644
--- a/example/go.sum
+++ b/example/go.sum
@@ -1,7 +1,7 @@
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-gioui.org v0.0.0-20200207203519-d2d495416a91 h1:wJQ6Js+oyhxj9U+ZePGh+z3E0kr7kuSovHR940He0Xc=
-gioui.org v0.0.0-20200207203519-d2d495416a91/go.mod h1:AHI9rFr6AEEHCb8EPVtb/p5M+NMJRKH58IOp8O3Je04=
+gioui.org v0.0.0-20200210172258-ef9459c7fde2 h1:eEXOqOxjMcIxGs6KbEWdu+Dj9lHgvoloeUDj/8Sf6t4=
+gioui.org v0.0.0-20200210172258-ef9459c7fde2/go.mod h1:AHI9rFr6AEEHCb8EPVtb/p5M+NMJRKH58IOp8O3Je04=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7 h1:SCYMcCJ89LjRGwEa0tRluNRiMjZHalQZrVrvTbPh+qw=
 github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7/go.mod h1:482civXOzJJCPzJ4ZOX/pwvXBWSnzD4OKMdH4ClKGbk=