I was just wondering if there's any add-ons out there that enhance precipitation (rain, snow, etc.) for P3Dv5?  I've not been able to find any.

I do have PrecipitFX for FSX but it's installed through Orbx Central and I don't know how I could install it manually to P3Dv5 to see if it will work or not.

Thanks

Edited January 25, 20251 yr by Zylx

On 1/25/2025 at 3:46 PM, Zylx said:

I was just wondering if there's any add-ons out there that enhance precipitation (rain, snow, etc.) for P3Dv5?  I've not been able to find any.

I have a couple of direct shader mods applied.

The edits are in the PrecipParticle.fx shader.

Code:

   // Control how long streaks face and how big they are.
    // TBM 26/03/2023 change the calculated value for a smaller looking rain/snow effect.
    float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale / (2.4 - (cb_uPrecipType * 1.65));
    float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale / (1.0 - (cb_uPrecipType * 0.25));

Complete Function (in spoiler):

Spoiler

void CreateStreakQuadVertices(float3 position, float3 velocity, float3 eyePosition, out float3 outQuadPosition[4], out float3 outQuadNormal, in PrecipMaterialInstanceData precipMaterial)
{
    // Control how long streaks face and how big they are.
    // TBM 26/03/2023 change the calculated value for a smaller looking rain/snow effect.
    float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale / (2.4 - (cb_uPrecipType * 1.65));
    float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale / (1.0 - (cb_uPrecipType * 0.25));

    // Original lines.
    //float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale;
    //float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale;

    velocity = normalize(velocity);
    float3 eyeVector = eyePosition - position;
    float3 eyeOnvelocityPlane = eyePosition - ((dot(eyeVector, velocity)) * velocity);
    float3 projectedeyeVector = eyeOnvelocityPlane - position;
    float3 sideVector = normalize(cross(projectedeyeVector, velocity));

    outQuadPosition[0] = position - (sideVector * 0.5 * width);
    outQuadPosition[1] = outQuadPosition[0] + (sideVector * width);
    outQuadPosition[2] = outQuadPosition[0] - (velocity * height);
    outQuadPosition[3] = outQuadPosition[2] + (sideVector * width);

    outQuadNormal = normalize(projectedeyeVector);
}

 

Easy to apply or reverse given the shaders are just text files.

Cheers

On 1/28/2025 at 3:24 PM, Rogen said:

I have a couple of direct shader mods applied.

The edits are in the PrecipParticle.fx shader.

Code:

   // Control how long streaks face and how big they are.
    // TBM 26/03/2023 change the calculated value for a smaller looking rain/snow effect.
    float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale / (2.4 - (cb_uPrecipType * 1.65));
    float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale / (1.0 - (cb_uPrecipType * 0.25));

Complete Function (in spoiler):

  Reveal hidden contents

void CreateStreakQuadVertices(float3 position, float3 velocity, float3 eyePosition, out float3 outQuadPosition[4], out float3 outQuadNormal, in PrecipMaterialInstanceData precipMaterial)
{
    // Control how long streaks face and how big they are.
    // TBM 26/03/2023 change the calculated value for a smaller looking rain/snow effect.
    float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale / (2.4 - (cb_uPrecipType * 1.65));
    float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale / (1.0 - (cb_uPrecipType * 0.25));

    // Original lines.
    //float height = precipMaterial.fQuadSize * precipMaterial.fQuadSizeHeightScale;
    //float width = precipMaterial.fQuadSize * precipMaterial.fQuadSizeWidthScale;

    velocity = normalize(velocity);
    float3 eyeVector = eyePosition - position;
    float3 eyeOnvelocityPlane = eyePosition - ((dot(eyeVector, velocity)) * velocity);
    float3 projectedeyeVector = eyeOnvelocityPlane - position;
    float3 sideVector = normalize(cross(projectedeyeVector, velocity));

    outQuadPosition[0] = position - (sideVector * 0.5 * width);
    outQuadPosition[1] = outQuadPosition[0] + (sideVector * width);
    outQuadPosition[2] = outQuadPosition[0] - (velocity * height);
    outQuadPosition[3] = outQuadPosition[2] + (sideVector * width);

    outQuadNormal = normalize(projectedeyeVector);
}

 

Easy to apply or reverse given the shaders are just text files.

Cheers

Wow, thank you Rogen, for sharing this.  I really appreciate it.  Sorry, for taking long to respond.  I will certainly give this a try and see how it looks.

On 2/8/2025 at 6:25 PM, Zylx said:

Wow, thank you Rogen, for sharing this.  I really appreciate it.  Sorry, for taking long to respond.  I will certainly give this a try and see how it looks.

Np.

Cheers