remove unneeded clears

src/PostProcess/RenderPipeline/Pipelines/babylon.defaultRenderingPipeline.ts

@@ -268,6 +268,11 @@
             this._disposePostProcesses();
             this._reset();
 
+            if(this.depthOfFieldEnabled){
+                this.depthOfField = new DepthOfFieldEffect(this._scene, this._defaultPipelineTextureType);
+                this.addEffect(this.depthOfField);
+            }
+
             if (this.bloomEnabled) {
                 this.pass = new PassPostProcess("sceneRenderTarget", 1.0, null, Texture.BILINEAR_SAMPLINGMODE, engine, false, this._defaultPipelineTextureType);
                 this.addEffect(new PostProcessRenderEffect(engine, this.PassPostProcessId, () => { return this.pass; }, true));
@@ -310,11 +315,6 @@
                 this.copyBack.autoClear = false;
             }
 
-            if(this.depthOfFieldEnabled){
-                this.depthOfField = new DepthOfFieldEffect(this._scene, this._defaultPipelineTextureType);
-                this.addEffect(this.depthOfField);
-            }
-
             if (this._imageProcessingEnabled) {
                 this.imageProcessing = new ImageProcessingPostProcess("imageProcessing", 1.0, null, Texture.BILINEAR_SAMPLINGMODE, engine, false, this._defaultPipelineTextureType);
                 if (this._hdr) {

src/PostProcess/babylon.depthOfFieldEffect.ts

@@ -70,12 +70,16 @@ module BABYLON {
             this._circleOfConfusion = new BABYLON.CircleOfConfusionPostProcess("circleOfConfusion", scene, depthMap, 1, null, BABYLON.Texture.BILINEAR_SAMPLINGMODE, scene.getEngine(), false, pipelineTextureType);
             // Capture circle of confusion texture
             this._depthOfFieldPass = new PassPostProcess("depthOfFieldPass", 1.0, null, Texture.BILINEAR_SAMPLINGMODE, scene.getEngine(), false, pipelineTextureType);
+            this._depthOfFieldPass.autoClear = false;
             // Blur the image but do not blur on sharp far to near distance changes to avoid bleeding artifacts 
             // See section 2.6.2 http://fileadmin.cs.lth.se/cs/education/edan35/lectures/12dof.pdf
             this._depthOfFieldBlurY = new DepthOfFieldBlurPostProcess("verticle blur", scene, new Vector2(0, 1.0), 15, 1.0, null, depthMap, this._circleOfConfusion, Texture.BILINEAR_SAMPLINGMODE, scene.getEngine(), false, pipelineTextureType);
+            this._depthOfFieldBlurY.autoClear = false;
             this._depthOfFieldBlurX = new DepthOfFieldBlurPostProcess("horizontal blur", scene, new Vector2(1.0, 0), 15, 1.0, null,  depthMap, null, Texture.BILINEAR_SAMPLINGMODE, scene.getEngine(), false, pipelineTextureType);
+            this._depthOfFieldBlurX.autoClear = false;
             // Merge blurred images with original image based on circleOfConfusion
             this._depthOfFieldMerge = new DepthOfFieldMergePostProcess("depthOfFieldMerge", this._circleOfConfusion, this._depthOfFieldPass, 1, null, BABYLON.Texture.BILINEAR_SAMPLINGMODE, scene.getEngine(), false, pipelineTextureType);
+            this._depthOfFieldMerge.autoClear = false;
         }
 
         /**