Creating textures in VL with FeralTic

vvvv beta question
1

Hello, I’m trying to write a texture from bitmap data. I understand that its possible to generate an image from a bitmap and ‘Upload’ it into a texture, but I would like to try a more direct route because the bitmap is imported from a byte array of a jpg and its pixelformat be uploaded, which is an expensive conversion.

So I thought I would take a look at writing a converter in vl for use in beta, but I was wondering but I’m finding it tricky so far.

2

(The above is a draft I need to elaborate on. In short it seems as though there are either missing nodes or the texture cannot be read in vvvv beta)

3

you can’t follow the route as shown here?

\girlpower\VL\DX\DynamicBuffersAndTextures.v4p
4

I did previously (byte → Image but I had to convert the jpg byte to a bitmap convert the pixel format and from then convert to Image which is expensive.
The nicer way would be to convert from bitmap directly to a texture, as seen here. I started writing this a while ago but something else popped up today, so I’ll have to find the appropriate example file, but I tried to get this by importing FeralTic dlls. I either couldn’t understand a step or one of the nodes was missing.

5

There is texture from stream method, witch works quite ok, but seems can’t find any track of it

6

@antokhio yeah I think that’s what I was looking for, but to no avail.

7
1 Like
8

Shame about the source code, but you’re a gem!

9 
using FeralTic.DX11;
using FeralTic.DX11.Resources;
using System.IO;
using VVVV.PluginInterfaces.V1;
using VVVV.PluginInterfaces.V2;

namespace VVVV.DX11.ANT
{
  [PluginInfo(Author = "antokhio", AutoEvaluate = true, Category = "DX11", Name = "AsTexture", Version = "Texture")]
  public class JpegFromRaw : IPluginEvaluate, IPluginBase, IDX11ResourceHost, IDX11RenderGraphPart
  {
    [Input("Stream")]
    protected IDiffSpread<Stream> FIn;
    [Output("Texture Out")]
    protected ISpread<DX11Resource<DX11Texture2D>> textureOutput;

    public void Evaluate(int SpreadMax)
    {
      this.textureOutput.set_SliceCount(SpreadMax);
      for (int index = 0; index < SpreadMax; ++index)
      {
        if (this.textureOutput.get_Item(index) == null)
          this.textureOutput.set_Item(index, new DX11Resource<DX11Texture2D>());
      }
      if (!this.FIn.get_IsChanged())
        return;
      for (int index = 0; index < SpreadMax; ++index)
      {
        if (((ISpread<Stream>) this.FIn).get_Item(index) != null)
        {
          this.textureOutput.get_Item(index).Dispose();
          this.textureOutput.set_Item(index, new DX11Resource<DX11Texture2D>());
        }
      }
    }

    public void Update(DX11RenderContext context)
    {
      for (int index = 0; index < ((ISpread<Stream>) this.FIn).get_SliceCount(); ++index)
      {
        if (!this.textureOutput.get_Item(index).Contains(context))
        {
          DX11Texture2D dx11Texture2D = DX11Texture2D.FromStream(context, ((ISpread<Stream>) this.FIn).get_Item(index), (int) ((ISpread<Stream>) this.FIn).get_Item(index).Length);
          this.textureOutput.get_Item(index).set_Item(context, dx11Texture2D);
        }
      }
    }

    public void Destroy(DX11RenderContext context, bool force)
    {
      for (int index = 0; index < ((ISpread<Stream>) this.FIn).get_SliceCount(); ++index)
      {
        if (this.textureOutput.get_Item(index) != null)
          this.textureOutput.get_Item(index).Dispose(context);
      }
    }
  }
}

Courtesy of dotPeek

10

Funnily enough I did the same with ILSpy a little early but I’m a little busy to clean it up, so thanks!

11

This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.