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https://github.com/hajimehoshi/ebiten.git
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7d146fb70b
The functions in the package `mobile/ebitenmobileview` could be invoked from EbitenViewController even before the graphics driver initialization is done in theory. This change fixes this issue by waiting the initialization by channels. Also, this change adds error handlings at these functions. Closes #2455
89 lines
2.3 KiB
Go
89 lines
2.3 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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import (
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"fmt"
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"golang.org/x/mobile/gl"
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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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gomobileContext gl.Context
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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(g.gomobileContext)
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}
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func (*graphicsDriverCreatorImpl) newDirectX() (graphicsdriver.Graphics, error) {
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return nil, nil
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}
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func (g *graphicsDriverCreatorImpl) newMetal() (graphicsdriver.Graphics, error) {
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if g.gomobileContext != nil {
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return nil, fmt.Errorf("ui: Metal is not available with gomobile-build")
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}
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return metal.NewGraphics()
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}
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func SetUIView(uiview uintptr) error {
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return theUI.setUIView(uiview)
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}
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func IsGL() (bool, error) {
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return theUI.isGL()
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}
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func (u *userInterfaceImpl) 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.graphicsDriverInitCh:
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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 *userInterfaceImpl) 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.graphicsDriverInitCh:
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}
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return u.graphicsDriver.IsGL(), nil
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}
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