// 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. // +build darwin package metal import ( "sync" "github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal/ca" "github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal/mtl" ) type view struct { window uintptr uiview uintptr windowChanged bool vsync bool device mtl.Device ml ca.MetalLayer once sync.Once } func (v *view) setDrawableSize(width, height int) { v.ml.SetDrawableSize(width, height) } func (v *view) getMTLDevice() mtl.Device { return v.device } func (v *view) setDisplaySyncEnabled(enabled bool) { // TODO: Now SetVsyncEnabled is called only from the main thread, and d.t.Run is not available since // recursive function call via Run is forbidden. // Fix this to use d.t.Run to avoid confusion. v.ml.SetDisplaySyncEnabled(enabled) v.vsync = enabled } func (v *view) colorPixelFormat() mtl.PixelFormat { return v.ml.PixelFormat() } func (v *view) reset() error { var err error v.device, err = mtl.CreateSystemDefaultDevice() if err != nil { return err } v.ml = ca.MakeMetalLayer() v.ml.SetDevice(v.device) // https://developer.apple.com/documentation/quartzcore/cametallayer/1478155-pixelformat // // The pixel format for a Metal layer must be MTLPixelFormatBGRA8Unorm, // MTLPixelFormatBGRA8Unorm_sRGB, MTLPixelFormatRGBA16Float, MTLPixelFormatBGRA10_XR, or // MTLPixelFormatBGRA10_XR_sRGB. v.ml.SetPixelFormat(mtl.PixelFormatBGRA8UNorm) v.ml.SetMaximumDrawableCount(3) // The vsync state might be reset. Set the state again (#1364). v.ml.SetDisplaySyncEnabled(v.vsync) return nil } func (v *view) drawable() ca.MetalDrawable { d, err := v.ml.NextDrawable() if err != nil { // Drawable is nil. This can happen at the initial state. Let's wait and see. return ca.MetalDrawable{} } return d }