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https://github.com/hajimehoshi/ebiten.git
synced 2024-12-25 03:08:54 +01:00
graphics: Try to restore the context on browsers (WIP)
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de987be85f
commit
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@ -180,7 +180,7 @@ func (i *Image) ReplacePixels(p []uint8) error {
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}
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}
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func (i *Image) IsInvalidated(context *opengl.Context) bool {
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func (i *Image) IsInvalidated(context *opengl.Context) bool {
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return context.IsContextLost(i.texture.native)
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return !context.IsTexture(i.texture.native)
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}
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}
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func (i *Image) createFramebufferIfNeeded(context *opengl.Context) (*framebuffer, error) {
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func (i *Image) createFramebufferIfNeeded(context *opengl.Context) (*framebuffer, error) {
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@ -514,7 +514,3 @@ func (c *Context) Flush() {
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return nil
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return nil
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})
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})
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}
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}
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func (c *Context) IsContextLost(t Texture) bool {
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return !c.IsTexture(t)
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}
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@ -87,6 +87,7 @@ func init() {
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type context struct {
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type context struct {
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gl *webgl.Context
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gl *webgl.Context
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loseContext *js.Object
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lastProgramID programID
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lastProgramID programID
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}
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}
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@ -116,6 +117,15 @@ func NewContext() (*Context, error) {
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}
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}
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c := &Context{}
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c := &Context{}
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c.gl = gl
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c.gl = gl
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// Getting an extension might fail after the context is lost, so
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// it is required to get the extension here.
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c.loseContext = gl.GetExtension("WEBGL_lose_context")
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if c.loseContext != nil {
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// This testing function name is temporary.
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js.Global.Set("_ebiten_loseContextForTesting", func() {
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c.loseContext.Call("loseContext")
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})
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}
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return c, nil
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return c, nil
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}
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}
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@ -408,7 +418,13 @@ func (c *Context) Flush() {
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gl.Flush()
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gl.Flush()
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}
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}
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func (c *Context) IsContextLost(t Texture) bool {
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func (c *Context) IsContextLost() bool {
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gl := c.gl
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gl := c.gl
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return gl.IsContextLost()
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return gl.IsContextLost()
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}
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}
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func (c *Context) RestoreContext() {
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if c.loseContext != nil {
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c.loseContext.Call("restoreContext")
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}
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}
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@ -430,7 +430,3 @@ func (c *Context) Flush() {
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gl := c.gl
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gl := c.gl
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gl.Flush()
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gl.Flush()
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}
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}
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func (c *Context) IsContextLost(t Texture) bool {
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return !c.IsTexture(t)
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}
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@ -30,13 +30,11 @@ type userInterface struct {
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scale float64
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scale float64
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deviceScale float64
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deviceScale float64
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sizeChanged bool
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sizeChanged bool
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contextRestored bool
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windowFocus bool
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windowFocus bool
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}
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}
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var currentUI = &userInterface{
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var currentUI = &userInterface{
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sizeChanged: true,
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sizeChanged: true,
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contextRestored: true,
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windowFocus: true,
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windowFocus: true,
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}
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}
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@ -74,8 +72,8 @@ func (u *userInterface) update(g GraphicsContext) error {
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if !u.windowFocus {
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if !u.windowFocus {
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return nil
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return nil
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}
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}
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if !u.contextRestored {
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if glContext.IsContextLost() {
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return nil
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glContext.RestoreContext()
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}
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}
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currentInput.updateGamepads()
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currentInput.updateGamepads()
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if u.sizeChanged {
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if u.sizeChanged {
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@ -235,12 +233,11 @@ func initialize() error {
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canvas.Call("addEventListener", "webglcontextlost", func(e *js.Object) {
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canvas.Call("addEventListener", "webglcontextlost", func(e *js.Object) {
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e.Call("preventDefault")
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e.Call("preventDefault")
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currentUI.contextRestored = false
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})
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})
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canvas.Call("addEventListener", "webglcontextrestored", func(e *js.Object) {
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canvas.Call("addEventListener", "webglcontextrestored", func(e *js.Object) {
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// TODO: Call preventDefault?
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// Do nothing.
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currentUI.contextRestored = true
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})
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})
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return nil
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return nil
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}
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}
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