Clouds Effect Power Option

[Simon Brown]

Hello,

I am trying to create a plugin to automate the fire tutorial but am having trouble with the clouds effect. Firstly, in the clouds dialog box there are three items: Scale, Roughness and Blend Mode. However, when calling the effect there is, instead of Roughness, a property called Power and whenever I try to set this item's value it throws an exeption.

Also, whenever I call the clouds effect from my plugin the result looks like the image below:

Thanks in advance

[MadJik]

Hi,

I don't see for power...

For the image, this is due to the multi-thread stuff...

Try this code for codelab to illustrate the problem (for coders):

// Count one by one and color in scale per channel the pixels in the usual x,y loops.
// You could think you will create a gradient, but surprise!

//Set the steps per channel
int Amount1=2;  //[-100,100]Red Step
int Amount2=2;  //[-100,100]Green Step
int Amount3=2;  //[-100,100]Blue Step

// Define the counter to be unique regardless the (multi)threads
[ThreadStatic]
public static int threadCount = 0;

void Render(Surface dst, Surface src, Rectangle rect)
{
 // Count + 1
 ++threadCount;

 ColorBgra CurrentPixel;
 for(int y = rect.Top; y < rect.Bottom; y++)
 {
   for (int x = rect.Left; x < rect.Right; x++)
   {
     CurrentPixel = src[x,y];
     CurrentPixel.R = (byte)((threadCount * Amount1) % 255);
     CurrentPixel.G = (byte)((threadCount * Amount2) % 255);
     CurrentPixel.B = (byte)((threadCount * Amount3) % 255);
     dst[x,y] = CurrentPixel;
   }
 }
}

The clouds use a random number sequence, and the sequence is renewed for each rois...

So you result is a pile of slices of rendered clouds...

Good luck!

[Simon Brown]

I don't understand what you mean, that script just renders a few gradients vertically.

What I am talking about is that intellisense says that the enumerations of CloudsEffect.PropertyNames are:

Scale
BlendOp
Power
Seed

[MadJik]

Hi,

I don't see for power...

For the image, this is due to the multi-thread stuff...

...

The clouds use a random number sequence, and the sequence is renewed for each rois...

So you result is a pile of slices of rendered clouds...

Good luck!

I think you are trying to use the CloudsEffect inside the loops rect, y, x...

[Simon Brown]

I'm not. However, I am calling it inside Render(), could that be a problem?

[MadJik]

    protected override void OnRender(Rectangle[] rois, int startIndex, int length)
   {
     //CloudsEffect here: ok (but don't know how exactly)
     for (int i = startIndex; i < startIndex + length; ++i)
     {
       //CloudsEffect here: bad
       Rectangle rect = rois[i];
       RenderRI(DstArgs.Surface, SrcArgs.Surface, rect);
     }
   }
   void RenderRI(Surface dst, Surface src, Rectangle rect)
   {
     PdnRegion selectionRegion = EnvironmentParameters.GetSelection(src.Bounds);
     Rectangle selection = this.EnvironmentParameters.GetSelection(src.Bounds).GetBoundsInt();
     ColorBgra PrimColor = (ColorBgra)EnvironmentParameters.PrimaryColor;
     ColorBgra Px;
     //CloudsEffect here: bad

[Simon Brown]

I have commented out the irrelevant code while solving this and still have the problem. This is the Render method.

public unsafe override void Render(EffectConfigToken parameters, RenderArgs dstArgs,
           RenderArgs srcArgs, Rectangle[] rois, int startIndex, int length)
       {
           FrameConfigToken token = (FrameConfigToken)parameters;

           CloudsEffect ce = new CloudsEffect();
           PropertyCollection cp = ce.CreatePropertyCollection();
           PropertyBasedEffectConfigToken pbect = new PropertyBasedEffectConfigToken(cp);

           pbect.SetPropertyValue(CloudsEffect.PropertyNames.Scale, 250);
           pbect.SetPropertyValue(CloudsEffect.PropertyNames.BlendOp, new UserBlendOps.DifferenceBlendOp());
           pbect.SetPropertyValue(CloudsEffect.PropertyNames.Power, 0.5);
           pbect.SetPropertyValue(CloudsEffect.PropertyNames.Seed, 5);

           RenderArgs ra = new RenderArgs(new Surface(dstArgs.Size));

           ce.Render(pbect, dstArgs, srcArgs, rois, startIndex, length);

       }

Thanks for your help so-far.

[harold]

Not really helpful, but: I would have thought that if you give the same seed you'd render different pieces of the same cloud.. But apparently that is not so?

[Simon Brown]

I have now realised the problem - the SetRenderInfo() call should be in SetRenderInfo().