mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
// Copyright 2022 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ui
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// #cgo CFLAGS: -x objective-c
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// #cgo LDFLAGS: -framework Foundation -framework UIKit
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//
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// #import <UIKit/UIKit.h>
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//
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// static double devicePixelRatio() {
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// return [[UIScreen mainScreen] nativeScale];
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// }
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import "C"
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import (
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"errors"
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"fmt"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl"
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)
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type graphicsDriverCreatorImpl struct {
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colorSpace graphicsdriver.ColorSpace
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}
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func (g *graphicsDriverCreatorImpl) newAuto() (graphicsdriver.Graphics, GraphicsLibrary, error) {
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m, err1 := g.newMetal()
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if err1 == nil {
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return m, GraphicsLibraryMetal, nil
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}
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o, err2 := g.newOpenGL()
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if err2 == nil {
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return o, GraphicsLibraryMetal, nil
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}
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return nil, GraphicsLibraryUnknown, fmt.Errorf("ui: failed to choose graphics drivers: Metal: %v, OpenGL: %v", err1, err2)
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}
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func (g *graphicsDriverCreatorImpl) newOpenGL() (graphicsdriver.Graphics, error) {
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return opengl.NewGraphics()
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}
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func (*graphicsDriverCreatorImpl) newDirectX() (graphicsdriver.Graphics, error) {
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return nil, errors.New("ui: DirectX is not supported in this environment")
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}
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func (g *graphicsDriverCreatorImpl) newMetal() (graphicsdriver.Graphics, error) {
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return metal.NewGraphics(g.colorSpace)
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}
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func (*graphicsDriverCreatorImpl) newPlayStation5() (graphicsdriver.Graphics, error) {
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return nil, errors.New("ui: PlayStation 5 is not supported in this environment")
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}
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func (u *UserInterface) SetUIView(uiview uintptr) error {
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select {
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case err := <-u.errCh:
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return err
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case <-u.graphicsLibraryInitCh:
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}
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// This function should be called only when the graphics library is Metal.
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if g, ok := u.graphicsDriver.(interface{ SetUIView(uintptr) }); ok {
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g.SetUIView(uiview)
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}
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return nil
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}
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func (u *UserInterface) IsGL() (bool, error) {
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select {
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case err := <-u.errCh:
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return false, err
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case <-u.graphicsLibraryInitCh:
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}
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return u.GraphicsLibrary() == GraphicsLibraryOpenGL, nil
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}
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func deviceScaleFactorImpl() float64 {
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// TODO: Can this be called from non-main threads?
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return float64(C.devicePixelRatio())
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}
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func dipToNativePixels(x float64, scale float64) float64 {
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return x
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}
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