context_x.go (1175B)
1 // Copyright 2020 The Ebiten Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // +build freebsd linux 16 // +build !android 17 18 package opengl 19 20 import ( 21 "strings" 22 "sync" 23 24 "github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl/gl" 25 ) 26 27 var ( 28 pboAvailable = true 29 pboAvailableOnce sync.Once 30 ) 31 32 func isPBOAvailable() bool { 33 pboAvailableOnce.Do(func() { 34 // This must be called after GL context is created. 35 str := gl.RendererDeviceString() 36 tokens := strings.Split(str, " ") 37 if len(tokens) == 0 { 38 return 39 } 40 // Raspbery Pi 4 has an issue around PBO (#1208). 41 if tokens[0] == "V3D" { 42 pboAvailable = false 43 } 44 }) 45 return pboAvailable 46 }