ebiten/internal/graphicscommand/thread.go
Hajime Hoshi fcd4453e4f ebiten: remove RunOnMainThread
Unfortunately, there are several issues in RunOnMainThread:

 * RunOnMainThread cannot be portable: It is impossible to implement this
   correctly on mobiles.
 * RunOnMainThread doesn't make sense on mobiles: the rendering works on
   a different thread (goroutine) on mobiles.
 * RunOnMainThread can cause deadlocks very easily.

Until we find a better solution, let's remove this.

Closes #1945
2022-02-14 01:49:42 +09:00

39 lines
1.2 KiB
Go

// Copyright 2020 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package graphicscommand
var theThread Thread
type Thread interface {
Call(f func())
}
// SetRenderingThread must be called from the rendering thread where e.g. OpenGL works.
func SetRenderingThread(thread Thread) {
theThread = thread
}
// runOnRenderingThread calls f on the rendering thread, and returns an error if any.
func runOnRenderingThread(f func()) {
// The thread is nil when 1) GOOS=js or 2) using golang.org/x/mobile/gl.
// When golang.org/x/mobile/gl is used, all the GL functions are called via Context, which already runs on an
// appropriate thread.
if theThread == nil {
f()
return
}
theThread.Call(f)
}