ebiten/internal/ui/graphics_darwin.go

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// Copyright 2018 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.
//go:build !ios && !ebitengl && !ebitencbackend
// +build !ios,!ebitengl,!ebitencbackend
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package ui
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// #cgo CFLAGS: -x objective-c
// #cgo LDFLAGS: -framework Foundation
//
// #import <Foundation/Foundation.h>
//
// static int getMacOSMajorVersion() {
// NSOperatingSystemVersion version = [[NSProcessInfo processInfo] operatingSystemVersion];
// return (int)version.majorVersion;
// }
//
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// static int getMacOSMinorVersion() {
// NSOperatingSystemVersion version = [[NSProcessInfo processInfo] operatingSystemVersion];
// return (int)version.minorVersion;
// }
import "C"
import (
"sync"
"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal"
"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl"
)
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var theGraphics graphicsdriver.Graphics
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func supportsMetal() bool {
// On macOS 10.11 El Capitan, there is a rendering issue on Metal (#781).
// Use the OpenGL in macOS 10.11 or older.
if C.getMacOSMajorVersion() <= 10 && C.getMacOSMinorVersion() <= 11 {
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return false
}
return metal.Get() != nil
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}
var graphicsOnce sync.Once
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func graphicsDriver() graphicsdriver.Graphics {
graphicsOnce.Do(func() {
if supportsMetal() {
theGraphics = metal.Get()
return
}
theGraphics = opengl.Get()
})
return theGraphics
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}