diff --git a/Diya/DiyaApplicationLauncher.class.st b/Diya/DiyaApplicationLauncher.class.st
index 407e268..4349f65 100644
--- a/Diya/DiyaApplicationLauncher.class.st
+++ b/Diya/DiyaApplicationLauncher.class.st
@@ -24,7 +24,6 @@ DiyaApplicationLauncher >> bindGlobalEvent [
 	root on: #quit do: [:e| running := false].
 	root on: #(fingerdown fingermotion mousemotion) do:[:e|
 		pointer position: e mapped worldPosition.
-		"Transcript show: e mapped worldPosition asString;cr."
 		DiyaRendererContext uniqueInstance mouse: (e mapped x) @ (e mapped y).
 	].
 ]
@@ -34,14 +33,6 @@ DiyaApplicationLauncher >> defaultApplication [
 	^DiyaExampleApp
 ]
 
-{ #category : #accessing }
-DiyaApplicationLauncher >> delta: delta [
-	|fps|
-	delta = 0 ifTrue:[^self].
-	fps := ((1000/delta) asInteger).
-	txtFPS data: ('FPS:', fps asString).
-]
-
 { #category : #initialization }
 DiyaApplicationLauncher >> initialize [
 	super initialize.
@@ -58,18 +49,40 @@ DiyaApplicationLauncher >> launch: app [
 	currapp := app uniqueInstance.
 	self appNode addNode: currapp root.
 	self context assets: currapp am.
-	currapp setup.
+	currapp setup
 ]
 
 { #category : #initialization }
 DiyaApplicationLauncher >> main [
+	| fps delta|
+	delta := DiyaClock uniqueInstance delta asMilliSeconds.
+	fps := DiyaBoot maxFPS.
+	delta = 0 ifFalse:[ fps :=  (1000/ delta) asInteger].
+	txtFPS data: ('FPS:', fps asString).
 	[(SDL2 pollEvent: event) > 0] whileTrue: [
 		root trigger: (DiyaEvent from: event mapped).
 	].
 	currapp ifNotNil: [currapp main.].
+	"root render."
+	[ root stepDown  ] fork.
+	self process.
 	root render.
 ]
 
+{ #category : #initialization }
+DiyaApplicationLauncher >> process [
+	|Q  node maxProcessingTime|
+	maxProcessingTime := 1000 / DiyaBoot maxFPS - 100.
+	Q := DiyaRendererContext uniqueInstance processQueue.
+	Q ifEmpty:[^ self].
+	[
+		node := Q removeFirst.
+		node process.
+	 	Q isNotEmpty and: DiyaClock uniqueInstance lapDelta asMilliSeconds < maxProcessingTime
+	] whileTrue
+	
+]
+
 { #category : #accessing }
 DiyaApplicationLauncher >> running [
 	^ running
diff --git a/Diya/DiyaBoot.class.st b/Diya/DiyaBoot.class.st
index 3eae063..3010e06 100644
--- a/Diya/DiyaBoot.class.st
+++ b/Diya/DiyaBoot.class.st
@@ -102,19 +102,18 @@ DiyaBoot >> initialize [
 
 { #category : #events }
 DiyaBoot >> render [
-	|delta launcher|
+	|launcher|
 	DiyaRendererContext uniqueInstance.
 	launcher := DiyaApplicationLauncher uniqueInstance.
 	launcher setup.
 	self GLinit.
 	[ launcher running ] whileTrue: [
-		delta := DiyaClock uniqueInstance delta asMilliSeconds.
-		launcher delta: delta.
 		DiyaClock uniqueInstance tick.
 		launcher main.
 		SDL2 glSwapWindow: window.
-		delta := DiyaClock uniqueInstance delta asMilliSeconds.
-		SDL2 delay: (0 max: (1000/ self class maxFPS) asInteger - delta).
+		SDL2 delay:
+			(0 max:
+				(1000/ self class maxFPS) asInteger - (DiyaClock uniqueInstance lapDelta asMilliSeconds)).
 	].
 ]
 
diff --git a/Diya/DiyaClock.class.st b/Diya/DiyaClock.class.st
index 85297f6..203db19 100644
--- a/Diya/DiyaClock.class.st
+++ b/Diya/DiyaClock.class.st
@@ -3,14 +3,15 @@ Class {
 	#superclass : #DiyaSingleton,
 	#instVars : [
 		'monotonic',
-		'lastTick'
+		'lastTick',
+		'lapTime'
 	],
 	#category : #'Diya-Runtime'
 }
 
 { #category : #initialization }
 DiyaClock >> delta [
-	 ^(DateAndTime now) - lastTick 
+	 ^ self lapDelta + self lapTime
 ]
 
 { #category : #initialization }
@@ -22,9 +23,21 @@ DiyaClock >> elapsedTime [
 DiyaClock >> initialize [
 	monotonic := DateAndTime now.
 	lastTick := monotonic.
+	lapTime := 0 asDuration.
+]
+
+{ #category : #initialization }
+DiyaClock >> lapDelta [
+	 ^ ((DateAndTime now) - lastTick)
+]
+
+{ #category : #initialization }
+DiyaClock >> lapTime [
+	^ lapTime
 ]
 
 { #category : #initialization }
 DiyaClock >> tick [
+	lapTime := (DateAndTime now) - lastTick.
 	lastTick := DateAndTime now.
 ]
diff --git a/Diya/DiyaExampleApp.class.st b/Diya/DiyaExampleApp.class.st
index b6afc7e..3459eae 100644
--- a/Diya/DiyaExampleApp.class.st
+++ b/Diya/DiyaExampleApp.class.st
@@ -11,6 +11,13 @@ DiyaExampleApp >> cleanup [
 
 { #category : #accessing }
 DiyaExampleApp >> defineStyleSheet [
+	|fmgr style|
+	fmgr := DiyaFontManager uniqueInstance.
+	#(16 24) do:[:fontSize|
+		Transcript show: 'Init font size ', fontSize asString, ' of ', fmgr defaultFamily; cr.
+		style := fmgr style: fmgr defaultStyle   from: fmgr defaultFamily.
+		style textureOf: fontSize.
+	].
 	DiyaUIThemesManager uniqueInstance currentTheme
 		define: #text_icon_1 styles: { 
 			#color -> Color orange.
diff --git a/Diya/DiyaImageTex.class.st b/Diya/DiyaImageTex.class.st
index 84dce7d..1ff393f 100644
--- a/Diya/DiyaImageTex.class.st
+++ b/Diya/DiyaImageTex.class.st
@@ -142,7 +142,6 @@ DiyaImageTex >> setup [
 DiyaImageTex >> surfaceFromFile: aPath [
 	aPath exists ifFalse: [ ^DiyaCoreAPIError signal:'File not found ', aPath fullName ].
 	[^ SDL2Image SDLImgLoad: aPath fullName] on: Error do: [
-		Transcript show: 'FALLLING BACCCCCCCCCCCCCCCCCCCCCCCCK'; cr.
 		^  self surfaceFromForm:  (ImageReadWriter formFromFileNamed: aPath)
 	].
 ]
diff --git a/Diya/DiyaNode.class.st b/Diya/DiyaNode.class.st
index 770ade9..3fcf07b 100644
--- a/Diya/DiyaNode.class.st
+++ b/Diya/DiyaNode.class.st
@@ -10,7 +10,6 @@ Class {
 		'tf',
 		'shader',
 		'context',
-		'dirty',
 		'ehandlers',
 		'root',
 		'styleName',
@@ -57,7 +56,6 @@ DiyaNode >> addNode: node at: pos [
 	node position: pos.
 	children add: node.
 	node root: self root.
-	Transcript show:'Added node #', self id asString; cr.
 	^ node 
 ]
 
@@ -111,7 +109,6 @@ DiyaNode >> initialize [
 	shader := nil.
 	context := DiyaRendererContext uniqueInstance.
 	children := OrderedCollection new.
-	dirty := false.
 	ehandlers := Dictionary new.
 	styleName := nil.
 	style := nil.
@@ -124,11 +121,6 @@ DiyaNode >> inner: aPoint [
 	^ self subclassResponsibility 
 ]
 
-{ #category : #testing }
-DiyaNode >> isDirty [
-	^ dirty
-]
-
 { #category : #testing }
 DiyaNode >> isRoot [
 	^ false
@@ -178,13 +170,10 @@ DiyaNode >> register: aBlock to: eventName [
 
 { #category : #accessing }
 DiyaNode >> render [
-	self step.
-	dirty ifTrue:[
-		dirty := self process not].
 	shader ifNotNil: [self setUpShader].
 	self draw.
 	children ifNil: [ ^self ].
-	children do: [:c  | c render  ].
+	children do: [:c| c render  ].
 ]
 
 { #category : #accessing }
@@ -194,7 +183,11 @@ DiyaNode >> root [
 
 { #category : #accessing }
 DiyaNode >> root: anObject [
-	root := anObject
+	root = anObject ifTrue:[^self].
+	root := anObject.
+	children ifNotNil: [ 
+		children do:[:c | c root: root]	
+	]
 ]
 
 { #category : #accessing }
@@ -221,12 +214,16 @@ DiyaNode >> scale: anObject [
 
 { #category : #initialization }
 DiyaNode >> setClean [
-	dirty := false
+	|Q|
+	Q := DiyaRendererContext uniqueInstance processQueue.
+	Q remove: self ifAbsent: [  ]
 ]
 
 { #category : #initialization }
 DiyaNode >> setDirty [
-	dirty := true
+	|Q|
+	Q := DiyaRendererContext uniqueInstance processQueue.
+	(Q includes: self ) ifFalse:[ Q add: self].
 ]
 
 { #category : #accessing }
@@ -265,6 +262,12 @@ DiyaNode >> shader: anObject [
 DiyaNode >> step [
 ]
 
+{ #category : #stepping }
+DiyaNode >> stepDown [
+	self step
+	children ifNotNil: [ children do:[:c | c stepDown ] ]
+]
+
 { #category : #accessing }
 DiyaNode >> styleName [
 	^ styleName
diff --git a/Diya/DiyaRendererContext.class.st b/Diya/DiyaRendererContext.class.st
index f83a4dc..ccc2bab 100644
--- a/Diya/DiyaRendererContext.class.st
+++ b/Diya/DiyaRendererContext.class.st
@@ -9,7 +9,8 @@ Class {
 		'texture0',
 		'projection',
 		'assets',
-		'window'
+		'window',
+		'rqueue'
 	],
 	#pools : [
 		'OpenGLConstants',
@@ -66,6 +67,7 @@ DiyaRendererContext >> initialize [
 	vbo bind: GL_ARRAY_BUFFER.
 	projection := Array2D identity: 4.
 	assets := AssetManager new.
+	rqueue := OrderedCollection new.
 ]
 
 { #category : #accessing }
@@ -78,12 +80,17 @@ DiyaRendererContext >> mouse: anObject [
 	mouse := anObject
 ]
 
+{ #category : #accessing }
+DiyaRendererContext >> processQueue [
+	^ rqueue
+]
+
 { #category : #accessing }
 DiyaRendererContext >> projection [
 	^ projection
 ]
 
-{ #category : #'as yet unclassified' }
+{ #category : #accessing }
 DiyaRendererContext >> resolution [
 	^ (display w) @ (display h)
 ]
diff --git a/Diya/DiyaRootNode.class.st b/Diya/DiyaRootNode.class.st
index a3bb469..d526dff 100644
--- a/Diya/DiyaRootNode.class.st
+++ b/Diya/DiyaRootNode.class.st
@@ -1,9 +1,22 @@
 Class {
 	#name : #DiyaRootNode,
 	#superclass : #DiyaNode,
+	#instVars : [
+		'Q'
+	],
 	#category : #'Diya-Graphics'
 }
 
+{ #category : #accessing }
+DiyaRootNode >> Q [
+	^ Q
+]
+
+{ #category : #accessing }
+DiyaRootNode >> Q: v [
+	Q := v
+]
+
 { #category : #accessing }
 DiyaRootNode >> boundingBox [
 	^ Rectangle origin: 0@0 corner: context resolution 
@@ -29,10 +42,11 @@ DiyaRootNode >> initialize [
 	parent := self.
 	shader := nil.
 	root := self.
-	styleName := #global
+	styleName := #global.
+	Q := OrderedCollection new
 ]
 
-{ #category : #'as yet unclassified' }
+{ #category : #accessing }
 DiyaRootNode >> inner: aPoint [
 	^true
 ]
@@ -47,6 +61,11 @@ DiyaRootNode >> process [
 	^true
 ]
 
+{ #category : #accessing }
+DiyaRootNode >> processingQueue [
+	^ Q
+]
+
 { #category : #accessing }
 DiyaRootNode >> updateTF [
 	"donothing"
diff --git a/Diya/DiyaText.class.st b/Diya/DiyaText.class.st
index d6c7e96..f8461ab 100644
--- a/Diya/DiyaText.class.st
+++ b/Diya/DiyaText.class.st
@@ -101,7 +101,7 @@ DiyaText >> fontStyle [
 	^ self ? #fontStyle
 ]
 
-{ #category : #accessing }
+{ #category : #'text-processing' }
 DiyaText >> formatText [
 	|offset index line|
 	lines ifNil: [^self].
@@ -176,7 +176,7 @@ DiyaText >> initialize [
 	maxLineWidth := 0.
 ]
 
-{ #category : #'as yet unclassified' }
+{ #category : #'text-processing' }
 DiyaText >> lastSeparatorFrom: index [
 	index to: 1 by: -1 do: [:i|
 		(data at: i) isSeparator ifTrue:[^i].
@@ -205,6 +205,10 @@ DiyaText >> process [
 	bbox ifNil: [ ^true ].
 	data ifNil:[^true].
 	data ifEmpty:[^true].
+	texture ifNil: [ self initTexture ].
+	texheight = texture height ifFalse: [
+		texheight := texture height.
+	].
 	vbuffer ifNotNil: [vbuffer free].
 	vbuffer :=  FFIExternalArray externalNewType: GLfloat size: data size * 16.
 	vbuffer autoRelease.
@@ -226,14 +230,14 @@ DiyaText >> splitLines [
 	] whileTrue.
 ]
 
+{ #category : #accessing }
+DiyaText >> styleName: aName [
+	super styleName: aName.
+	texture := nil.
+]
+
 { #category : #accessing }
 DiyaText >> texture [
-	texture ifNil: [ self initTexture ].
-	texheight = texture height ifFalse: [
-		texheight := texture height.
-		self process.
-		self setClean.
-	].
 	^texture
 ]
 
@@ -252,5 +256,5 @@ DiyaText >> valignText:h [
 { #category : #initialization }
 DiyaText >> wordWrap: aBool [
 	wrap := aBool.
-	dirty := true
+	self setDirty
 ]
diff --git a/Diya/SDL2Image.class.st b/Diya/SDL2Image.class.st
index 4fafc91..9e13f23 100644
--- a/Diya/SDL2Image.class.st
+++ b/Diya/SDL2Image.class.st
@@ -22,8 +22,8 @@ SDL2Image class >> checkSymbol [
 { #category : #accessing }
 SDL2Image class >> libNames [
 	^#(
-		'libSDL2_image-2.0.so.0'
 		'libSDL2_image.so'
+		'libSDL2_image-2.0.so.0'
 		'libSDL2_image-2.0.so'
 		'libSDL2_image-2.0.so.0.2.3'
 	)