internal/atlas: unify the term 'isolate' and 'independent' to 'isolate'

internal/atlas/image.go

@@ -208,12 +208,12 @@ func init() {
 
 // Image is a rectangle pixel set that might be on an atlas.
 type Image struct {
-	width       int
-	height      int
-	disposed    bool
-	independent bool
-	volatile    bool
-	screen      bool
+	width    int
+	height   int
+	disposed bool
+	isolate  bool
+	volatile bool
+	screen   bool
 
 	backend *backend
 
@@ -711,8 +711,8 @@ func NewImage(width, height int) *Image {
 	}
 }
 
-func (i *Image) SetIndependent(independent bool) {
-	i.independent = independent
+func (i *Image) SetIsolate(isolate bool) {
+	i.isolate = isolate
 }
 
 func (i *Image) SetVolatile(volatile bool) {
@@ -730,7 +730,7 @@ func (i *Image) canBePutOnAtlas() bool {
 	if minSize == 0 || maxSize == 0 {
 		panic("atlas: minSize or maxSize must be initialized")
 	}
-	if i.independent {
+	if i.isolate {
 		return false
 	}
 	if i.volatile {

internal/buffered/image.go

@@ -66,16 +66,16 @@ func (i *Image) initialize() {
 	i.img = atlas.NewImage(i.width, i.height)
 }
 
-func (i *Image) SetIndependent(independent bool) {
+func (i *Image) SetIsolate(isolate bool) {
 	if maybeCanAddDelayedCommand() {
 		if tryAddDelayedCommand(func() error {
-			i.SetIndependent(independent)
+			i.SetIsolate(isolate)
 			return nil
 		}) {
 			return
 		}
 	}
-	i.img.SetIndependent(independent)
+	i.img.SetIsolate(isolate)
 }
 
 func (i *Image) SetVolatile(volatile bool) {

internal/mipmap/mipmap.go

@@ -51,8 +51,8 @@ func NewScreenFramebufferMipmap(width, height int) *Mipmap {
 	}
 }
 
-func (m *Mipmap) SetIndependent(independent bool) {
-	m.orig.SetIndependent(independent)
+func (m *Mipmap) SetIsolate(isolate bool) {
+	m.orig.SetIsolate(isolate)
 }
 
 func (m *Mipmap) SetVolatile(volatile bool) {

internal/ui/context.go

@@ -245,11 +245,11 @@ func (c *context) layoutGame(outsideWidth, outsideHeight float64, deviceScaleFac
 	if c.offscreen == nil {
 		c.offscreen = c.game.NewOffscreenImage(ow, oh)
 
-		// Keep the offscreen an independent image from an atlas (#1938).
+		// Keep the offscreen an isolate image from an atlas (#1938).
 		// The shader program for the screen is special and doesn't work well with an image on an atlas.
 		// An image on an atlas is surrounded by a transparent edge,
 		// and the shader program unexpectedly picks the pixel on the edges.
-		c.offscreen.mipmap.SetIndependent(true)
+		c.offscreen.mipmap.SetIsolate(true)
 	}
 
 	return ow, oh