Add cocoa.textureFactory

example/game/sprites/sprites.go

@@ -79,7 +79,6 @@ func New() *Sprites {
 
 func (game *Sprites) OnScreenSizeUpdated(e ui.ScreenSizeUpdatedEvent) {
 	go func() {
-		e := e
 		game.screenSizeUpdatedCh <- e
 	}()
 }

example/main.go

@@ -57,7 +57,11 @@ func main() {
 	const fps = 60
 	const title = "Ebiten Demo"
 
-	var u ui.UI = cocoa.New(screenWidth, screenHeight, screenScale, title)
+	type UI interface {
+		ui.UI
+		//graphics.TextureFactory
+	}
+	var u UI = cocoa.New(screenWidth, screenHeight, screenScale, title)
 	// TODO: Get a map or something
 	u.LoadResources(game.InitTextures)
 	inputStateUpdated := u.InputStateUpdated()
@@ -72,10 +76,9 @@ func main() {
 			case e, ok := <-inputStateUpdated:
 				// TODO: Use Adaptor?
 				if ok {
-					type Handler interface {
+					if game2, ok := game.(interface {
 						OnInputStateUpdated(ui.InputStateUpdatedEvent)
-					}
-					if game2, ok := game.(Handler); ok {
+					}); ok {
 						game2.OnInputStateUpdated(e)
 					}
 				} else {
@@ -83,10 +86,9 @@ func main() {
 				}
 			case e, ok := <-screenSizeUpdated:
 				if ok {
-					type Handler interface {
+					if game2, ok := game.(interface {
 						OnScreenSizeUpdated(ui.ScreenSizeUpdatedEvent)
-					}
-					if game2, ok := game.(Handler); ok {
+					}); ok {
 						game2.OnScreenSizeUpdated(e)
 					}
 				} else {

graphics/opengl/device.go

@@ -3,6 +3,7 @@ package opengl
 import (
 	"github.com/hajimehoshi/go-ebiten/graphics"
 	"github.com/hajimehoshi/go-ebiten/graphics/matrix"
+	"image"
 )
 
 type Device struct {
@@ -18,8 +19,8 @@ func NewDevice(screenWidth, screenHeight, screenScale int) *Device {
 	}
 }
 
-func (device *Device) Update(draw func(graphics.Canvas)) {
-	context := device.context
+func (d *Device) Update(draw func(graphics.Canvas)) {
+	context := d.context
 	context.Init()
 	context.ResetOffscreen()
 	context.Clear()
@@ -30,7 +31,7 @@ func (device *Device) Update(draw func(graphics.Canvas)) {
 	context.setMainFramebufferOffscreen()
 	context.Clear()
 
-	scale := float64(device.screenScale)
+	scale := float64(d.screenScale)
 	geometryMatrix := matrix.IdentityGeometry()
 	geometryMatrix.Scale(scale, scale)
 	context.DrawRenderTarget(context.screenId,
@@ -38,6 +39,10 @@ func (device *Device) Update(draw func(graphics.Canvas)) {
 	context.flush()
 }
 
-func (device *Device) TextureFactory() graphics.TextureFactory {
-	return device.context
+func (d *Device) CreateRenderTarget(tag string, width, height int) (graphics.RenderTargetId, error) {
+	return d.context.CreateRenderTarget(tag, width, height)
+}
+
+func (d *Device) CreateTextureFromImage(tag string, img image.Image) (graphics.TextureId, error) {
+	return d.context.CreateTextureFromImage(tag, img)
 }

graphics/texture_factory.go

@@ -21,6 +21,13 @@ type TextureFactoryEvents interface {
 	RenderTargetCreated() <-chan RenderTargetCreatedEvent
 }
 
+// TODO: Rename this later
+type TextureFactory2 interface {
+	CreateRenderTarget(tag string, width, height int)
+	CreateTexture(tag string, img image.Image)
+	TextureFactoryEvents
+}
+
 type TextureFactory interface {
 	CreateRenderTarget(tag string, width, height int) (RenderTargetId, error)
 	CreateTextureFromImage(tag string, img image.Image) (TextureId, error)

ui/cocoa/cocoa.go

@@ -3,13 +3,9 @@ package cocoa
 // #cgo CFLAGS: -x objective-c
 // #cgo LDFLAGS: -framework Cocoa -framework OpenGL
 //
-// #include <stdlib.h>
 // #include "input.h"
 //
 // void StartApplication(void);
-// void* CreateGLContext(void* sharedGLContext);
-// void SetCurrentGLContext(void* glContext);
-// void* CreateWindow(size_t width, size_t height, const char* title, void* sharedGLContext);
 // void PollEvents(void);
 // void BeginDrawing(void* window);
 // void EndDrawing(void* window);
@@ -19,18 +15,19 @@ import (
 	"github.com/hajimehoshi/go-ebiten/graphics"
 	"github.com/hajimehoshi/go-ebiten/graphics/opengl"
 	"github.com/hajimehoshi/go-ebiten/ui"
+	"image"
 	"unsafe"
 )
 
 type UI struct {
-	screenWidth       int
-	screenHeight      int
-	screenScale       int
-	graphicsDevice    *opengl.Device
-	window            unsafe.Pointer
-	initialEventSent  bool
-	screenSizeUpdated chan ui.ScreenSizeUpdatedEvent // initialized lazily
-	inputStateUpdated chan ui.InputStateUpdatedEvent // initialized lazily
+	screenWidth      int
+	screenHeight     int
+	screenScale      int
+	graphicsDevice   *opengl.Device
+	window           unsafe.Pointer
+	initialEventSent bool
+	textureFactory   *textureFactory
+	uiEvents
 }
 
 var currentUI *UI
@@ -46,22 +43,22 @@ func New(screenWidth, screenHeight, screenScale int, title string) *UI {
 		initialEventSent: false,
 	}
 
-	cTitle := C.CString(title)
-	defer C.free(unsafe.Pointer(cTitle))
-
 	C.StartApplication()
 
-	context := C.CreateGLContext(unsafe.Pointer(nil))
-	C.SetCurrentGLContext(context)
-	u.graphicsDevice = opengl.NewDevice(
-		u.screenWidth,
-		u.screenHeight,
-		u.screenScale)
+	u.textureFactory = runTextureFactory()
+
+	u.textureFactory.UseContext(func() {
+		u.graphicsDevice = opengl.NewDevice(
+			u.screenWidth,
+			u.screenHeight,
+			u.screenScale)
+	})
+
+	u.window = u.textureFactory.CreateWindow(
+		u.screenWidth*u.screenScale,
+		u.screenHeight*u.screenScale,
+		title)
 
-	u.window = C.CreateWindow(C.size_t(u.screenWidth*u.screenScale),
-		C.size_t(u.screenHeight*u.screenScale),
-		cTitle,
-		context)
 	currentUI = u
 
 	return u
@@ -71,19 +68,20 @@ func (u *UI) PollEvents() {
 	C.PollEvents()
 	if !u.initialEventSent {
 		e := ui.ScreenSizeUpdatedEvent{u.screenWidth, u.screenHeight}
-		u.notifyScreenSizeUpdated(e)
+		u.uiEvents.notifyScreenSizeUpdated(e)
 		u.initialEventSent = true
 	}
 }
 
-func (u *UI) LoadTextures(map[int]string) {
-	// TODO: Implement
+func (u *UI) CreateRenderTarget(tag string, width, height int) {
+}
+
+func (u *UI) CreateTexture(tag string, img image.Image) {
 }
 
 func (u *UI) LoadResources(f func(graphics.TextureFactory)) {
-	C.BeginDrawing(u.window)
+	// This should be executed on the shared-context context
 	f(u.graphicsDevice)
-	C.EndDrawing(u.window)
 }
 
 func (u *UI) Draw(f func(graphics.Canvas)) {
@@ -92,45 +90,11 @@ func (u *UI) Draw(f func(graphics.Canvas)) {
 	C.EndDrawing(u.window)
 }
 
-func (u *UI) ScreenSizeUpdated() <-chan ui.ScreenSizeUpdatedEvent {
-	if u.screenSizeUpdated != nil {
-		return u.screenSizeUpdated
-	}
-	u.screenSizeUpdated = make(chan ui.ScreenSizeUpdatedEvent)
-	return u.screenSizeUpdated
-}
-
-func (u *UI) notifyScreenSizeUpdated(e ui.ScreenSizeUpdatedEvent) {
-	if u.screenSizeUpdated == nil {
-		return
-	}
-	go func() {
-		u.screenSizeUpdated <- e
-	}()
-}
-
-func (u *UI) InputStateUpdated() <-chan ui.InputStateUpdatedEvent {
-	if u.inputStateUpdated != nil {
-		return u.inputStateUpdated
-	}
-	u.inputStateUpdated = make(chan ui.InputStateUpdatedEvent)
-	return u.inputStateUpdated
-}
-
-func (u *UI) notifyInputStateUpdated(e ui.InputStateUpdatedEvent) {
-	if u.inputStateUpdated == nil {
-		return
-	}
-	go func() {
-		u.inputStateUpdated <- e
-	}()
-}
-
 //export ebiten_ScreenSizeUpdated
 func ebiten_ScreenSizeUpdated(width, height int) {
 	u := currentUI
 	e := ui.ScreenSizeUpdatedEvent{width, height}
-	u.notifyScreenSizeUpdated(e)
+	u.uiEvents.notifyScreenSizeUpdated(e)
 }
 
 //export ebiten_InputUpdated
@@ -139,7 +103,7 @@ func ebiten_InputUpdated(inputType C.InputType, cx, cy C.int) {
 
 	if inputType == C.InputTypeMouseUp {
 		e := ui.InputStateUpdatedEvent{-1, -1}
-		u.notifyInputStateUpdated(e)
+		u.uiEvents.notifyInputStateUpdated(e)
 		return
 	}
 
@@ -157,5 +121,5 @@ func ebiten_InputUpdated(inputType C.InputType, cx, cy C.int) {
 		y = u.screenHeight - 1
 	}
 	e := ui.InputStateUpdatedEvent{x, y}
-	u.notifyInputStateUpdated(e)
+	u.uiEvents.notifyInputStateUpdated(e)
 }

ui/cocoa/mainloop.c

@@ -32,10 +32,6 @@ void* CreateGLContext(void* sharedGLContext) {
   return glContext;
 }
 
-void SetCurrentGLContext(void* glContext) {
-  [(NSOpenGLContext*)glContext makeCurrentContext];
-}
-
 void* CreateWindow(size_t width, size_t height, const char* title, void* sharedGLContext) {
   NSOpenGLContext* glContext = CreateGLContext(sharedGLContext);
   [glContext makeCurrentContext];
@@ -66,7 +62,13 @@ void PollEvents(void) {
   }
 }
 
+void UseGLContext(void* glContext) {
+  // TODO: CGLLock
+  [(NSOpenGLContext*)glContext makeCurrentContext];
+}
+
 void BeginDrawing(void* window) {
+  // TODO: CGLLock
   [[(EbitenWindow*)window glContext] makeCurrentContext];
   glClear(GL_COLOR_BUFFER_BIT);
 }

ui/cocoa/texture_factory.go

@@ -0,0 +1,62 @@
+package cocoa
+
+// #include <stdlib.h>
+//
+// void* CreateGLContext(void* sharedGLContext);
+// void* CreateWindow(size_t width, size_t height, const char* title, void* sharedGLContext);
+// void UseGLContext(void* glContext);
+//
+import "C"
+import (
+	//"github.com/hajimehoshi/go-ebiten/graphics"
+	"unsafe"
+)
+
+type textureFactory struct {
+	sharedContext unsafe.Pointer
+	funcs         chan func()
+	funcsDone     chan struct{}
+	textureFactoryEvents
+}
+
+func runTextureFactory() *textureFactory {
+	t := &textureFactory{
+		funcs: make(chan func()),
+		funcsDone: make(chan struct{}),
+	}
+	ch := make(chan struct{})
+	go func() {
+		t.sharedContext = C.CreateGLContext(unsafe.Pointer(nil))
+		close(ch)
+		t.loop()
+	}()
+	<-ch
+	return t
+}
+
+func (t *textureFactory) loop() {
+	for {
+		select {
+		case f := <-t.funcs:
+			C.UseGLContext(t.sharedContext)
+			f()
+			t.funcsDone <- struct{}{}
+			// TODO: Unuse
+		}
+	}
+}
+
+func (t *textureFactory) UseContext(f func()) {
+	t.funcs <- f
+	<-t.funcsDone
+}
+
+func (t *textureFactory) CreateWindow(width, height int, title string) unsafe.Pointer {
+	cTitle := C.CString(title)
+	defer C.free(unsafe.Pointer(cTitle))
+
+	return C.CreateWindow(C.size_t(width),
+		C.size_t(height),
+		cTitle,
+		t.sharedContext)
+}

ui/cocoa/texture_factory_events.go

@@ -0,0 +1,44 @@
+package cocoa
+
+import (
+	"github.com/hajimehoshi/go-ebiten/graphics"
+)
+
+type textureFactoryEvents struct {
+	textureCreated chan graphics.TextureCreatedEvent
+	renderTargetCreated chan graphics.RenderTargetCreatedEvent
+}
+
+func (t *textureFactoryEvents) TextureCreated() <-chan graphics.TextureCreatedEvent {
+	if t.textureCreated != nil {
+		return t.textureCreated
+	}
+	t.textureCreated = make(chan graphics.TextureCreatedEvent)
+	return t.textureCreated
+}
+
+func (t *textureFactoryEvents) notifyTextureCreated(e graphics.TextureCreatedEvent) {
+	if t.textureCreated == nil {
+		return
+	}
+	go func() {
+		t.textureCreated <- e
+	}()
+}
+
+func (t *textureFactoryEvents) RenderTargetCreated() <-chan graphics.RenderTargetCreatedEvent {
+	if t.renderTargetCreated != nil {
+		return t.renderTargetCreated
+	}
+	t.renderTargetCreated = make(chan graphics.RenderTargetCreatedEvent)
+	return t.renderTargetCreated
+}
+
+func (t *textureFactoryEvents) notifyRenderTargetCreated(e graphics.RenderTargetCreatedEvent) {
+	if t.renderTargetCreated == nil {
+		return
+	}
+	go func() {
+		t.renderTargetCreated <- e
+	}()
+}

ui/cocoa/ui_events.go

@@ -0,0 +1,44 @@
+package cocoa
+
+import (
+	"github.com/hajimehoshi/go-ebiten/ui"
+)
+
+type uiEvents struct {
+	screenSizeUpdated chan ui.ScreenSizeUpdatedEvent // initialized lazily
+	inputStateUpdated chan ui.InputStateUpdatedEvent // initialized lazily
+}
+
+func (u *uiEvents) ScreenSizeUpdated() <-chan ui.ScreenSizeUpdatedEvent {
+	if u.screenSizeUpdated != nil {
+		return u.screenSizeUpdated
+	}
+	u.screenSizeUpdated = make(chan ui.ScreenSizeUpdatedEvent)
+	return u.screenSizeUpdated
+}
+
+func (u *uiEvents) notifyScreenSizeUpdated(e ui.ScreenSizeUpdatedEvent) {
+	if u.screenSizeUpdated == nil {
+		return
+	}
+	go func() {
+		u.screenSizeUpdated <- e
+	}()
+}
+
+func (u *uiEvents) InputStateUpdated() <-chan ui.InputStateUpdatedEvent {
+	if u.inputStateUpdated != nil {
+		return u.inputStateUpdated
+	}
+	u.inputStateUpdated = make(chan ui.InputStateUpdatedEvent)
+	return u.inputStateUpdated
+}
+
+func (u *uiEvents) notifyInputStateUpdated(e ui.InputStateUpdatedEvent) {
+	if u.inputStateUpdated == nil {
+		return
+	}
+	go func() {
+		u.inputStateUpdated <- e
+	}()
+}

ui/ui.go

@@ -22,7 +22,6 @@ type UIEvents interface {
 type UI interface {
 	PollEvents()
 	LoadResources(func(graphics.TextureFactory))
-	LoadTextures(map[int]string)
 	Draw(func(graphics.Canvas))
 	UIEvents
 }