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GPUImageNoiseEffect - a (fake) noise generator, driven by the input t…
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…exture
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@mikedotalmond
mikedotalmond committed Sep 8, 2012
1 parent d93dfb5 commit ddfc0c8
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91 changes: 91 additions & 0 deletions GPUImage.as3proj
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<?xml version="1.0" encoding="utf-8"?>
<project version="2">
<!-- Output SWF options -->
<output>
<movie outputType="Application" />
<movie input="" />
<movie path="bin\GPUImage.swf" />
<movie fps="30" />
<movie width="1280" />
<movie height="640" />
<movie version="11" />
<movie minorVersion="3" />
<movie platform="Flash Player" />
<movie background="#000000" />
</output>
<!-- Other classes to be compiled into your SWF -->
<classpaths>
<class path="src" />
<class path="examples" />
</classpaths>
<!-- Build options -->
<build>
<option accessible="False" />
<option allowSourcePathOverlap="False" />
<option benchmark="False" />
<option es="False" />
<option locale="" />
<option loadConfig="" />
<option optimize="True" />
<option omitTraces="True" />
<option showActionScriptWarnings="True" />
<option showBindingWarnings="True" />
<option showInvalidCSS="True" />
<option showDeprecationWarnings="True" />
<option showUnusedTypeSelectorWarnings="True" />
<option strict="True" />
<option useNetwork="True" />
<option useResourceBundleMetadata="True" />
<option warnings="True" />
<option verboseStackTraces="False" />
<option linkReport="" />
<option loadExterns="" />
<option staticLinkRSL="True" />
<option additional="" />
<option compilerConstants="" />
<option minorVersion="" />
</build>
<!-- SWC Include Libraries -->
<includeLibraries>
<!-- example: <element path="..." /> -->
</includeLibraries>
<!-- SWC Libraries -->
<libraryPaths>
<!-- example: <element path="..." /> -->
</libraryPaths>
<!-- External Libraries -->
<externalLibraryPaths>
<!-- example: <element path="..." /> -->
</externalLibraryPaths>
<!-- Runtime Shared Libraries -->
<rslPaths>
<!-- example: <element path="..." /> -->
</rslPaths>
<!-- Intrinsic Libraries -->
<intrinsics>
<!-- example: <element path="..." /> -->
</intrinsics>
<!-- Assets to embed into the output SWF -->
<library>
<!-- example: <asset path="..." id="..." update="..." glyphs="..." mode="..." place="..." sharepoint="..." /> -->
</library>
<!-- Class files to compile (other referenced classes will automatically be included) -->
<compileTargets>
<compile path="examples\GPUImageShowcase.as" />
</compileTargets>
<!-- Paths to exclude from the Project Explorer tree -->
<hiddenPaths>
<!-- example: <hidden path="..." /> -->
</hiddenPaths>
<!-- Executed before build -->
<preBuildCommand />
<!-- Executed after build -->
<postBuildCommand alwaysRun="False" />
<!-- Other project options -->
<options>
<option showHiddenPaths="False" />
<option testMovie="Default" />
</options>
<!-- Plugin storage -->
<storage />
</project>
8 changes: 7 additions & 1 deletion examples/GPUImageShowcase.as
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Expand Up @@ -16,6 +16,8 @@ package
import flash.geom.Point; import flash.geom.Point;
import flash.media.Camera; import flash.media.Camera;
import flash.media.Video; import flash.media.Video;

import ru.inspirit.gpu.image.effects.GPUImageNoiseEffect;
import ru.inspirit.gpu.image.effects.GPUImageAnselEffect; import ru.inspirit.gpu.image.effects.GPUImageAnselEffect;
import ru.inspirit.gpu.image.effects.GPUImageBloomEffect; import ru.inspirit.gpu.image.effects.GPUImageBloomEffect;
import ru.inspirit.gpu.image.effects.GPUImageGeorgiaEffect; import ru.inspirit.gpu.image.effects.GPUImageGeorgiaEffect;
Expand All @@ -25,6 +27,7 @@ package
import ru.inspirit.gpu.image.effects.GPUImageTiltShiftEffect; import ru.inspirit.gpu.image.effects.GPUImageTiltShiftEffect;
import ru.inspirit.gpu.image.effects.GPUImageToonEffect; import ru.inspirit.gpu.image.effects.GPUImageToonEffect;
import ru.inspirit.gpu.image.effects.GPUImageXProcessEffect; import ru.inspirit.gpu.image.effects.GPUImageXProcessEffect;

import ru.inspirit.gpu.image.filters.GPUImageColorMatrix; import ru.inspirit.gpu.image.filters.GPUImageColorMatrix;
import ru.inspirit.gpu.image.filters.GPUImageCurves; import ru.inspirit.gpu.image.filters.GPUImageCurves;
import ru.inspirit.gpu.image.filters.GPUImageEmboss; import ru.inspirit.gpu.image.filters.GPUImageEmboss;
Expand All @@ -36,6 +39,7 @@ package
import ru.inspirit.gpu.image.filters.GPUImageSobelEdges; import ru.inspirit.gpu.image.filters.GPUImageSobelEdges;
import ru.inspirit.gpu.image.filters.GPUImageUnsharpMask; import ru.inspirit.gpu.image.filters.GPUImageUnsharpMask;
import ru.inspirit.gpu.image.filters.GPUImageVignette; import ru.inspirit.gpu.image.filters.GPUImageVignette;

import ru.inspirit.gpu.image.GPUImage; import ru.inspirit.gpu.image.GPUImage;
import ru.inspirit.gpu.image.GPUImageFilterGroup; import ru.inspirit.gpu.image.GPUImageFilterGroup;
import ru.inspirit.gpu.image.IGPUImageProcessor; import ru.inspirit.gpu.image.IGPUImageProcessor;
Expand Down Expand Up @@ -175,6 +179,7 @@ package


lomoGroup.addProcessor(curves); lomoGroup.addProcessor(curves);
lomoGroup.addProcessor(clrMat); lomoGroup.addProcessor(clrMat);
//lomoGroup.addProcessor(new GPUImageNoiseEffect(0.333));
lomoGroup.addProcessor(lomoVig); lomoGroup.addProcessor(lomoVig);
// //


Expand Down Expand Up @@ -203,8 +208,9 @@ package
var anselGroup:GPUImageFilterGroup = new GPUImageFilterGroup(); var anselGroup:GPUImageFilterGroup = new GPUImageFilterGroup();
anselGroup.addProcessor(new GPUImageAnselEffect); anselGroup.addProcessor(new GPUImageAnselEffect);
anselGroup.addProcessor(new GPUImageUnsharpMask(3, .25)); anselGroup.addProcessor(new GPUImageUnsharpMask(3, .25));
anselGroup.addProcessor(new GPUImageVignette()); anselGroup.addProcessor(new GPUImageVignette());


_imageProcessors.push(new GPUImageNoiseEffect(.333));
_imageProcessors.push(new GPUImageRetroEffect()); _imageProcessors.push(new GPUImageRetroEffect());
_imageProcessors.push(anselGroup); _imageProcessors.push(anselGroup);
_imageProcessors.push(new GPUImageSaharaEffect()); _imageProcessors.push(new GPUImageSaharaEffect());
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136 changes: 136 additions & 0 deletions src/ru/inspirit/gpu/image/effects/GPUImageNoiseEffect.as
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package ru.inspirit.gpu.image.effects
{
import flash.display3D.Context3D;
import flash.display3D.IndexBuffer3D;
import flash.display3D.textures.TextureBase;
import ru.inspirit.gpu.image.filters.*;
import ru.inspirit.gpu.image.GPUImageFilter;
import ru.inspirit.gpu.image.IGPUImageProcessor;


/**
* ...
* @author Eugene Zatepyakin
*/
public final class GPUImageNoiseEffect extends GPUImageFilter
{
internal static const FRAGMENT_CODE:String =
//
"mov ft0, v0.xy \n" + // get uv coords
"sub ft0.zw, ft0.xy, fc0.xy \n" + // ft0.zw = outCoord() - fc0.xy
"div ft0.xy, ft0.xy, fc0.zw \n" + // ft0.xy = ft0.xy / wh

// frc(u*u + v*v) -> ft1.x
"mul ft1.x, ft0.x, ft0.x \n" + //ft1.x = ft0.x * ft0.x;
"mul ft1.y, ft0.y, ft0.y \n" + //ft1.y = ft0.y * ft0.y;
"add ft1.x, ft1.x, ft1.y \n" + //
"frc ft1.x, ft1.x \n" + //

//x
"cos ft0.x, ft0.x \n" +
"rcp ft0.y, ft1.y \n" + // 1.0 / ft1.y
"mul ft0.x, ft0.x, ft1.y \n" +

//y
"sin ft0.y, ft0.z \n" +
"div ft0.z, ft1.y, ft1.x \n" +
"mul ft0.y, ft0.y, ft0.z \n" +

"mul ft0.xy, ft0.xy, fc0.zw \n" + // scale
"add ft0.xy, ft0.xy, fc0.xy \n" + // offset

"tex ft0.xyz, ft0.yx, fs0.xyz <2d,nearest,repeat,mipnone>\n" + // sample using noise uv into ft0
"mul ft0.xyz, ft0.xyz, fc1.x \n" + // noise (amount) mult

"tex ft1, v0.xy, fs0 <2d,nearest,repeat,mipnone>\n" + // sample input texture into ft1
"mul ft1.xyz, ft1.xyz, fc1.y \n" + // texture (amount) mult

"add ft0.xyz, ft0.zxy, ft1.xyz \n" + // add + mult noise over texture
"mul ft0.xyz, ft0.xyz, ft1.xyz \n" + //

// ft0 now contains the sampled texture data + the psuedo noise
"mov oc, ft0 \n"; // move to output


protected var _params:Vector.<Number>;

protected var _textureMult:Number;
protected var _noiseMult:Number;

private var _invWidth:Number;
private var _invHeight:Number;

public function GPUImageNoiseEffect(noiseAmount:Number=0.5, textureAmount:Number=1.0)
{
super();

_textureMult = textureAmount;
_noiseMult = noiseAmount;

_params = Vector.<Number>([0, 0, 0, 0, 0, 0, 0, 0]);
_params.fixed = true;

_fragmentShader = agalCompiler.assemble(FRAGMENT_TYPE, FRAGMENT_CODE, AGAL_DEBUG);
}

override public function setup(context:Context3D, textureWidth:int, textureHeight:int):void {
_invWidth = 1.0 / textureWidth;
_invHeight = 1.0 / textureHeight;
super.setup(context, textureWidth, textureHeight);
}

override public function process(indices:IndexBuffer3D, sourceTexture:TextureBase = null):void
{
_context.setRenderToTexture(_outputTexture, _enableDepthAndStencil, _antiAlias, 0);
_context.clear(0.0, 0.0, 0.0, 1.0);

_context.setTextureAt(0, _inputTexture);

_params[0] = 1e-3 + Math.random() * _textureWidth;
_params[1] = 1e-3 + Math.random() * _textureHeight;
_params[2] = 1e-3 + Math.random() * _invWidth;
_params[3] = 1e-3 + Math.random() * _invHeight;

_params[4] = _noiseMult; // noise amount
_params[5] = _textureMult; // texture amount

_context.setProgram(_program);
_context.setProgramConstantsFromVector(FRAGMENT_TYPE, 0, _params, 2);

_context.drawTriangles(indices, 0, 2);

_context.setTextureAt(1, null);
}

/**
*
*/
public function set textureMult(value:Number):void {
_textureMult = value;
}

/**
*
*/
public function set noiseMult(value:Number):void {
_noiseMult = value;
}


override public function clone():IGPUImageProcessor
{
var copy:GPUImageNoiseEffect = new GPUImageNoiseEffect();
return copy;
}

override public function dispose():void
{
super.dispose();
}

override public function toString():String
{
return 'Noise Effect';
}
}
}

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