ebiten/internal/buffered/command.go
Hajime Hoshi 3cf867035d buffered: Do not delay commands if possible
Delaying commands causes memory allocations, which can be heavy
especially on browsers.

This avoids to use 'defer' for performance.
2019-09-27 03:27:47 +09:00

45 lines
1.2 KiB
Go

// Copyright 2019 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 buffered
import (
"sync"
)
var (
needsToDelayCommands = true
// delayedCommands represents a queue for image operations that are ordered before the game starts
// (BeginFrame). Before the game starts, the package shareable doesn't determine the minimum/maximum texture
// sizes (#879).
delayedCommands []func()
delayedCommandsM sync.Mutex
)
func flushDelayedCommands() {
delayedCommandsM.Lock()
defer delayedCommandsM.Unlock()
if !needsToDelayCommands {
return
}
for _, c := range delayedCommands {
c()
}
delayedCommands = delayedCommands[:0]
needsToDelayCommands = false
}