ebiten/internal/buffered/command.go

52 lines
1.3 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() error
delayedCommandsM sync.Mutex
)
func flushDelayedCommands() error {
fs := getDelayedFuncsAndClear()
for _, f := range fs {
if err := f(); err != nil {
return err
}
}
return nil
}
func getDelayedFuncsAndClear() []func() error {
delayedCommandsM.Lock()
defer delayedCommandsM.Unlock()
fs := make([]func() error, len(delayedCommands))
copy(fs, delayedCommands)
delayedCommands = nil
needsToDelayCommands = false
return fs
}