view_ios.go (1898B)
1 // Copyright 2019 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 //go:build darwin && ios 16 // +build darwin,ios 17 18 package metal 19 20 // #cgo CFLAGS: -x objective-c 21 // #cgo LDFLAGS: -framework UIKit 22 // 23 // #import <UIKit/UIKit.h> 24 // 25 // static void addSublayer(void* view, void* sublayer) { 26 // CALayer* layer = ((UIView*)view).layer; 27 // [layer addSublayer:(CALayer*)sublayer]; 28 // } 29 // 30 // static void setFrame(void* cametal, void* uiview) { 31 // CGSize size = ((UIView*)uiview).frame.size; 32 // ((CALayer*)cametal).frame = CGRectMake(0, 0, size.width, size.height); 33 // } 34 import "C" 35 36 import ( 37 "unsafe" 38 39 "github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal/mtl" 40 ) 41 42 func (v *view) setWindow(window uintptr) { 43 panic("metal: setWindow is not available on iOS") 44 } 45 46 func (v *view) setUIView(uiview uintptr) { 47 v.uiview = uiview 48 } 49 50 func (v *view) update() { 51 v.once.Do(func() { 52 if v.ml.Layer() == nil { 53 panic("metal: CAMetalLayer is not initialized yet") 54 } 55 C.addSublayer(unsafe.Pointer(v.uiview), v.ml.Layer()) 56 }) 57 C.setFrame(v.ml.Layer(), unsafe.Pointer(v.uiview)) 58 } 59 60 func (v *view) usePresentsWithTransaction() bool { 61 // Do not use presentsWithTransaction on iOS (#1799). 62 return false 63 } 64 65 func (v *view) maximumDrawableCount() int { 66 return 3 67 } 68 69 const ( 70 storageMode = mtl.StorageModeShared 71 resourceStorageMode = mtl.ResourceStorageModeShared 72 )