From aff77d98e41f566d426498723b885c7958424742 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 11 Nov 2018 04:48:30 +0900
Subject: [PATCH] graphicsdriver/opengl: Bug fix: compile error on browsers and
 mobiles

---
 internal/graphicsdriver/opengl/context_mobile.go |  8 --------
 internal/graphicsdriver/opengl/driver_js.go      |  4 ++--
 internal/graphicsdriver/opengl/driver_mobile.go  | 14 +++++++++++++-
 internal/ui/ui_mobile.go                         |  4 ++--
 4 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/internal/graphicsdriver/opengl/context_mobile.go b/internal/graphicsdriver/opengl/context_mobile.go
index 13e713607..f486b1c64 100644
--- a/internal/graphicsdriver/opengl/context_mobile.go
+++ b/internal/graphicsdriver/opengl/context_mobile.go
@@ -75,14 +75,6 @@ type contextImpl struct {
 	worker mgl.Worker
 }
 
-func Init() {
-	theContext.gl, theContext.worker = mgl.NewContext()
-}
-
-func InitWithContext(context mgl.Context) {
-	theContext.gl = context
-}
-
 func (c *context) doWork(chError <-chan error, chDone <-chan struct{}) error {
 	if c.worker == nil {
 		panic("not reached")
diff --git a/internal/graphicsdriver/opengl/driver_js.go b/internal/graphicsdriver/opengl/driver_js.go
index 1c6a04ffb..91f84bb10 100644
--- a/internal/graphicsdriver/opengl/driver_js.go
+++ b/internal/graphicsdriver/opengl/driver_js.go
@@ -17,9 +17,9 @@
 package opengl
 
 func (d *Driver) IsContextLost() bool {
-	return theContext.isContextLost()
+	return d.context.isContextLost()
 }
 
 func (d *Driver) RestoreContext() {
-	theContext.restoreContext()
+	d.context.restoreContext()
 }
diff --git a/internal/graphicsdriver/opengl/driver_mobile.go b/internal/graphicsdriver/opengl/driver_mobile.go
index 260c7699a..5dc354713 100644
--- a/internal/graphicsdriver/opengl/driver_mobile.go
+++ b/internal/graphicsdriver/opengl/driver_mobile.go
@@ -16,6 +16,18 @@
 
 package opengl
 
+import (
+	"golang.org/x/mobile/gl"
+)
+
 func (d *Driver) DoWork(chError <-chan error, chDone <-chan struct{}) error {
-	return theContext.doWork(chError, chDone)
+	return d.context.doWork(chError, chDone)
+}
+
+func (d *Driver) Init() {
+	d.context.gl, d.context.worker = gl.NewContext()
+}
+
+func (d *Driver) InitWithContext(context gl.Context) {
+	d.context.gl = context
 }
diff --git a/internal/ui/ui_mobile.go b/internal/ui/ui_mobile.go
index 5a21d807d..aa1938cd5 100644
--- a/internal/ui/ui_mobile.go
+++ b/internal/ui/ui_mobile.go
@@ -152,9 +152,9 @@ func Run(width, height int, scale float64, title string, g GraphicsContext, main
 
 	if mainloop {
 		ctx := <-glContextCh
-		opengl.InitWithContext(ctx)
+		opengl.GetDriver().InitWithContext(ctx)
 	} else {
-		opengl.Init()
+		opengl.GetDriver().Init()
 	}
 
 	// Force to set the screen size