From 7d0fc7ceb885fc3cb33280e1fd3a0d573cc72ffa Mon Sep 17 00:00:00 2001
From: Thomas Friedel <tomee6@gmail.com>
Date: Wed, 24 Apr 2019 12:35:11 +0200
Subject: [PATCH] regenerated

---
 backend/xmobile/clip.go    | 4 +---
 backend/xmobile/fill.go    | 1 +
 backend/xmobile/xmobile.go | 8 +-------
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/backend/xmobile/clip.go b/backend/xmobile/clip.go
index 9e48578..67979eb 100755
--- a/backend/xmobile/clip.go
+++ b/backend/xmobile/clip.go
@@ -7,7 +7,6 @@ import (
 )
 
 func (b *XMobileBackend) ClearClip() {
-	b.curClip = nil
 	b.activate()
 
 	b.glctx.StencilMask(0xFF)
@@ -15,9 +14,7 @@ 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,
@@ -41,6 +38,7 @@ func (b *XMobileBackend) Clip(pts [][2]float64) {
 	b.glctx.UseProgram(b.sr.ID)
 	b.glctx.Uniform4f(b.sr.Color, 1, 1, 1, 1)
 	b.glctx.Uniform2f(b.sr.CanvasSize, float32(b.fw), float32(b.fh))
+	b.glctx.Uniform1f(b.sr.GlobalAlpha, 1)
 	b.glctx.EnableVertexAttribArray(b.sr.Vertex)
 
 	b.glctx.ColorMask(false, false, false, false)
diff --git a/backend/xmobile/fill.go b/backend/xmobile/fill.go
index bbd645f..fe7a217 100755
--- a/backend/xmobile/fill.go
+++ b/backend/xmobile/fill.go
@@ -115,6 +115,7 @@ func (b *XMobileBackend) Fill(style *backendbase.FillStyle, pts [][2]float64) {
 		b.glctx.UseProgram(b.sr.ID)
 		b.glctx.Uniform4f(b.sr.Color, 0, 0, 0, 0)
 		b.glctx.Uniform2f(b.sr.CanvasSize, float32(b.fw), float32(b.fh))
+		b.glctx.Uniform1f(b.sr.GlobalAlpha, 1)
 
 		b.glctx.EnableVertexAttribArray(b.sr.Vertex)
 		b.glctx.VertexAttribPointer(b.sr.Vertex, 2, gl.FLOAT, false, 0, 0)
diff --git a/backend/xmobile/xmobile.go b/backend/xmobile/xmobile.go
index ea339db..35424d7 100755
--- a/backend/xmobile/xmobile.go
+++ b/backend/xmobile/xmobile.go
@@ -211,8 +211,6 @@ type XMobileBackend struct {
 
 	*GLContext
 
-	curClip [][2]float64
-
 	activateFn                 func()
 	disableTextureRenderTarget func()
 }
@@ -241,11 +239,7 @@ 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)
-		}
+		// todo reapply clipping since another application may have used the stencil buffer
 	}
 	b.disableTextureRenderTarget = func() {
 		b.glctx.BindFramebuffer(gl.FRAMEBUFFER, gl.Framebuffer{Value: 0})