ebiten/internal/graphicsdriver/opengl/context_x.go
2020-07-23 19:15:34 +09:00

47 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
// +build freebsd linux
package opengl
import (
"strings"
"sync"
"github.com/hajimehoshi/ebiten/internal/graphicsdriver/opengl/gl"
)
var (
pboAvailable = true
pboAvailableOnce sync.Once
)
func isPBOAvailable() bool {
pboAvailableOnce.Do(func() {
// This must be called after GL context is created.
str := gl.RendererDeviceString()
tokens := strings.Split(str, " ")
if len(tokens) == 0 {
return
}
// Raspbery Pi 4 has an issue around PBO (#1208).
if tokens[0] == "V3D" {
pboAvailable = false
}
})
return pboAvailable
}