vendor dependencies, make some changes to how input is done

vendor/github.com/hajimehoshi/ebiten/v2/internal/graphicscommand/thread.go

@@ -0,0 +1,51 @@
+// 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
+
+import (
+	"context"
+
+	"github.com/hajimehoshi/ebiten/v2/internal/thread"
+)
+
+var theRenderThread thread.Thread = thread.NewNoopThread()
+
+// SetOSThreadAsRenderThread sets an OS thread as rendering thread e.g. for OpenGL.
+func SetOSThreadAsRenderThread() {
+	theRenderThread = thread.NewOSThread()
+}
+
+func LoopRenderThread(ctx context.Context) {
+	_ = theRenderThread.Loop(ctx)
+}
+
+// runOnRenderThread calls f on the rendering thread.
+func runOnRenderThread(f func(), sync bool) {
+	if sync {
+		theRenderThread.Call(f)
+		return
+	}
+
+	// As the current thread doesn't have a capacity in a channel,
+	// CallAsync should block when the previously-queued task is not executed yet.
+	// This blocking is expected as double-buffering is used.
+	theRenderThread.CallAsync(f)
+}
+
+func Terminate() {
+	// Post a task to the render thread to ensure all the queued functions are executed.
+	// This is necessary especially for GLFW. glfw.Terminate will remove the context and any graphics calls after that will be invalidated.
+	theRenderThread.Call(func() {})
+}