ebiten/internal/restorable/js.go
Hajime Hoshi 2bdef2e8c4 restorable: Add an explicit way to detect context-lost
isTexture was used to detect context-lost and called every frame.
This was not good for performance.

This change adds a way to notify context-lost from the WebGL
handlers directly, and the package restorable uses it instead of
calling (*Image).isInvalaidated.

Fixes #1175
2020-05-30 20:29:15 +09:00

27 lines
1.1 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.
// +build js
package restorable
// needsDisposingWhenRestoring reports whether disposing resources is necessary or not when restoring.
//
// On browsers, disposing resources is not required since the objects are already managed by JavaScript GC and they
// are already invalidated. Rather, disposing them when restoring causes warnings on the console.
const needsDisposingWhenRestoring = false
// canDetectContextLostExplicitly reports whether the context lost can be detected by handlers in an explicit way.
const canDetectContextLostExplicitly = true