SSF_TextureGenerator

SSF_TextureGenerator forks particleBuffer from ParticleSource and then generate Textures for further surface reconstruction and shading.

Its working logic can be summarized as follow:

void OnEnable()
{
    print("[SSF] Enabled TextureGenerator "+ gameObject.name);
    setupTextures();
    setupMaterials();
    // Add Surface Mesh and shading if not exists.
    if(GetComponent<SSF_RenderSurface>()==null){
        gameObject.AddComponent<SSF_RenderSurface>();
    }
    GetComponent<SSF_RenderSurface>().enabled = true;
    // Set shading's texsource from this
    GetComponent<SSF_RenderSurface>().tex_source = this;
}
void OnDisable()
{
    print("[SSF] Disabled TextureGenerator "+ gameObject.name);
    releaseTextures();
    releaseBuffers();
    DestroyImmediate(material_depthColorThickness);
    DestroyImmediate(material_noise);
    //Disable Surface Shading
    if(GetComponent<SSF_RenderSurface>()!=null){
    GetComponent<SSF_RenderSurface>().enabled = false;
    }
}

Then Draw Textures On Each Frame:

void OnRenderObject()
{
    if (particleSource != null)
    {
        particleSource.updateParticleBuffer();
        setParams();
        check_debugVisualize();
        drawColorTexture();
        drawDepthTexture();
        drawThicknessTexture();
        smoothDepthTexture();
        drawNoiseTexture();
        drawNormalViewDirTexture();
    }
}

Param Tuning

smoothIterations

Describes how many smoothing operations each frame, normally 50-120 is suitable

smothed_dt

Describes the timestep dt for each smothing operation, normally 5e-4 is suitable

estimated_dz_t

From some sense, it amplifies the smoothing effect of above params, normally 1000

thicknessAmplifier

Controls thicknessTexture’s output magnitude

basicNoiseTex

Render each Particle with a basicNoiseTex, generate a noiseTexture for fluid shading

noiseAmplifier

Controls noiseTexture’s output magnitude

textureSize

Controls the Texture Size of Texture ouput with textureSize*textureSize

debug_visualize

If toggle on, it will copy *Texture_ouput to *Texture_debug for debug purposes. This requires two kinds of textures share the same format and dimension.

fluid_surface_meshes

Array of Plane meshes with different resolutions, corresponding to surfaceQuality in SSF_RenderSurface