67 lines
1.2 KiB
Go
67 lines
1.2 KiB
Go
 
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// SPDX-License-Identifier: Unlicense OR MIT
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//go:build !noopengl
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package app
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/*
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#include <android/native_window_jni.h>
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#include <EGL/egl.h>
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*/
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import "C"
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import (
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"unsafe"
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"gioui.org/internal/egl"
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)
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type androidContext struct {
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win *window
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eglSurf egl.NativeWindowType
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*egl.Context
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}
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func init() {
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newAndroidGLESContext = func(w *window) (context, error) {
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ctx, err := egl.NewContext(nil)
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if err != nil {
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return nil, err
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}
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return &androidContext{win: w, Context: ctx}, nil
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}
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}
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func (c *androidContext) Release() {
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if c.Context != nil {
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c.Context.Release()
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c.Context = nil
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}
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}
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func (c *androidContext) Refresh() error {
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c.Context.ReleaseSurface()
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if err := c.win.setVisual(c.Context.VisualID()); err != nil {
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return err
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}
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win, _, _ := c.win.nativeWindow()
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c.eglSurf = egl.NativeWindowType(unsafe.Pointer(win))
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return nil
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}
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func (c *androidContext) Lock() error {
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// The Android emulator creates a broken surface if it is not
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// created on the same thread as the context is made current.
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if c.eglSurf != nil {
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if err := c.Context.CreateSurface(c.eglSurf); err != nil {
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return err
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}
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c.eglSurf = nil
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}
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return c.Context.MakeCurrent()
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}
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func (c *androidContext) Unlock() {
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c.Context.ReleaseCurrent()
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}
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