1 files changed, 66 insertions, 0 deletions
diff --git a/vendor/gioui.org/app/egl_android.go b/vendor/gioui.org/app/egl_android.go
new file mode 100644
index 0000000..2c31130
--- /dev/null
+++ b/vendor/gioui.org/app/egl_android.go
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+package app
+
+/*
+#include <android/native_window_jni.h>
+#include <EGL/egl.h>
+*/
+import "C"
+
+import (
+	"unsafe"
+
+	"gioui.org/internal/egl"
+)
+
+type androidContext struct {
+	win           *window
+	eglSurf       egl.NativeWindowType
+	width, height int
+	*egl.Context
+}
+
+func init() {
+	newAndroidGLESContext = func(w *window) (context, error) {
+		ctx, err := egl.NewContext(nil)
+		if err != nil {
+			return nil, err
+		}
+		return &androidContext{win: w, Context: ctx}, nil
+	}
+}
+
+func (c *androidContext) Release() {
+	if c.Context != nil {
+		c.Context.Release()
+		c.Context = nil
+	}
+}
+
+func (c *androidContext) Refresh() error {
+	c.Context.ReleaseSurface()
+	if err := c.win.setVisual(c.Context.VisualID()); err != nil {
+		return err
+	}
+	win, width, height := c.win.nativeWindow()
+	c.eglSurf = egl.NativeWindowType(unsafe.Pointer(win))
+	c.width, c.height = width, height
+	return nil
+}
+
+func (c *androidContext) Lock() error {
+	// The Android emulator creates a broken surface if it is not
+	// created on the same thread as the context is made current.
+	if c.eglSurf != nil {
+		if err := c.Context.CreateSurface(c.eglSurf, c.width, c.height); err != nil {
+			return err
+		}
+		c.eglSurf = nil
+	}
+	return c.Context.MakeCurrent()
+}
+
+func (c *androidContext) Unlock() {
+	c.Context.ReleaseCurrent()
+}