diff --git a/backend/gogl/clip.go b/backend/gogl/clip.go
index 7da6254..f90558a 100644
--- a/backend/gogl/clip.go
+++ b/backend/gogl/clip.go
@@ -7,6 +7,7 @@ import (
 )
 
 func (b *GoGLBackend) ClearClip() {
+	b.curClip = nil
 	b.activate()
 
 	gl.StencilMask(0xFF)
@@ -14,7 +15,9 @@ func (b *GoGLBackend) ClearClip() {
 }
 
 func (b *GoGLBackend) Clip(pts [][2]float64) {
+	b.curClip = nil
 	b.activate()
+	b.curClip = pts
 
 	b.ptsBuf = b.ptsBuf[:0]
 	b.ptsBuf = append(b.ptsBuf,
diff --git a/backend/gogl/fill.go b/backend/gogl/fill.go
index 5346150..77ab226 100644
--- a/backend/gogl/fill.go
+++ b/backend/gogl/fill.go
@@ -100,10 +100,12 @@ func (b *GoGLBackend) Fill(style *backendbase.FillStyle, pts [][2]float64) {
 	if style.Color.A >= 255 {
 		vertex := b.useShader(style)
 
+		gl.StencilFunc(gl.EQUAL, 0, 0xFF)
 		gl.EnableVertexAttribArray(vertex)
 		gl.VertexAttribPointer(vertex, 2, gl.FLOAT, false, 0, nil)
 		gl.DrawArrays(mode, 4, int32(len(pts)))
 		gl.DisableVertexAttribArray(vertex)
+		gl.StencilFunc(gl.ALWAYS, 0, 0xFF)
 	} else {
 		gl.ColorMask(false, false, false, false)
 		gl.StencilFunc(gl.ALWAYS, 1, 0xFF)
diff --git a/backend/gogl/gogl.go b/backend/gogl/gogl.go
index 7f982dd..894b1b6 100644
--- a/backend/gogl/gogl.go
+++ b/backend/gogl/gogl.go
@@ -206,6 +206,8 @@ type GoGLBackend struct {
 
 	*GLContext
 
+	curClip [][2]float64
+
 	activateFn                 func()
 	disableTextureRenderTarget func()
 }
@@ -244,6 +246,11 @@ func New(x, y, w, h int, ctx *GLContext) (*GoGLBackend, error) {
 	b.activateFn = func() {
 		gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
 		gl.Viewport(int32(b.x), int32(b.y), int32(b.w), int32(b.h))
+		gl.Clear(gl.STENCIL_BUFFER_BIT)
+		if c := b.curClip; c != nil {
+			b.curClip = nil
+			b.Clip(c)
+		}
 	}
 	b.disableTextureRenderTarget = func() {
 		gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
diff --git a/backend/xmobile/clip.go b/backend/xmobile/clip.go
index b088e87..9e48578 100755
--- a/backend/xmobile/clip.go
+++ b/backend/xmobile/clip.go
@@ -7,6 +7,7 @@ import (
 )
 
 func (b *XMobileBackend) ClearClip() {
+	b.curClip = nil
 	b.activate()
 
 	b.glctx.StencilMask(0xFF)
@@ -14,7 +15,9 @@ func (b *XMobileBackend) ClearClip() {
 }
 
 func (b *XMobileBackend) Clip(pts [][2]float64) {
+	b.curClip = nil
 	b.activate()
+	b.curClip = pts
 
 	b.ptsBuf = b.ptsBuf[:0]
 	b.ptsBuf = append(b.ptsBuf,
diff --git a/backend/xmobile/fill.go b/backend/xmobile/fill.go
index 15fb54c..bbd645f 100755
--- a/backend/xmobile/fill.go
+++ b/backend/xmobile/fill.go
@@ -100,10 +100,12 @@ func (b *XMobileBackend) Fill(style *backendbase.FillStyle, pts [][2]float64) {
 	if style.Color.A >= 255 {
 		vertex := b.useShader(style)
 
+		b.glctx.StencilFunc(gl.EQUAL, 0, 0xFF)
 		b.glctx.EnableVertexAttribArray(vertex)
 		b.glctx.VertexAttribPointer(vertex, 2, gl.FLOAT, false, 0, 0)
 		b.glctx.DrawArrays(mode, 4, len(pts))
 		b.glctx.DisableVertexAttribArray(vertex)
+		b.glctx.StencilFunc(gl.ALWAYS, 0, 0xFF)
 	} else {
 		b.glctx.ColorMask(false, false, false, false)
 		b.glctx.StencilFunc(gl.ALWAYS, 1, 0xFF)
diff --git a/backend/xmobile/xmobile.go b/backend/xmobile/xmobile.go
index 7a27c3c..b51288b 100755
--- a/backend/xmobile/xmobile.go
+++ b/backend/xmobile/xmobile.go
@@ -211,6 +211,8 @@ type XMobileBackend struct {
 
 	*GLContext
 
+	curClip [][2]float64
+
 	activateFn                 func()
 	disableTextureRenderTarget func()
 }
@@ -239,6 +241,11 @@ func New(x, y, w, h int, ctx *GLContext) (*XMobileBackend, error) {
 	b.activateFn = func() {
 		b.glctx.BindFramebuffer(gl.FRAMEBUFFER, gl.Framebuffer{Value: 0})
 		b.glctx.Viewport(b.x, b.y, b.w, b.h)
+		b.glctx.Clear(gl.STENCIL_BUFFER_BIT)
+		if c := b.curClip; c != nil {
+			b.curClip = nil
+			b.Clip(c)
+		}
 	}
 	b.disableTextureRenderTarget = func() {
 		b.glctx.BindFramebuffer(gl.FRAMEBUFFER, gl.Framebuffer{Value: 0})