I like the results so far, although I might reduce it a bit. Thanks Pe11e! Also very much looking forward to your haze tweak.

 

I also noticed that the terrain shadows look a lot more dramatic after this tweak:

 

 

 

 

Nice shots.

As you wrote now you only need the haze tweak.

Do those tweaks also work with "HDR off"? I never use HDR so far in P3D, isn't it a huge FPS killer?

At Avsim.su they have a Topic about all those tweaks.
A poster named Knossos came up with it and is doing all the testing...

I am trying to go through it with Google translate.

Tweaks I have seen :
- Less brightness clouds at dusk and night
- Contrast shadows/light ( Cloud shadows / underground )
- The further away the scenery , the darker it gets ( Nvidia CP settings )

The haze tweak I did not find...( more than 40 pages... ) ... if it is in this topic...

I've found the thread with the terrain haze tweak, but there's no instruction on how modify our own the GPUterrain.fx, they provide the file already tweaked, and the file is from the v3.1 of p3d.

Anyone has the lines to tweak?

 

edit: found it, the first lines added to the GPUterrain.fx are the lines to add to the original file.

I've found the thread with the terrain haze tweak, but there's no instruction on how modify our own the GPUterrain.fx, they provide the file already tweaked, and the file is from the v3.1 of p3d.

Anyone has the lines to tweak?

 

edit: found it, the first lines added to the GPUterrain.fx are the lines to add to the original file.

 

Could you tell us what needs to be modified regarding the haze ?

 

Thanks

Do those tweaks also work with "HDR off"? I never use HDR so far in P3D, isn't it a huge FPS killer?

Am using the second tweak to brighten up the terrain. The days are bright like it should be. Like in the pics other have posted. Morning and evening have that little extra brightness I always was adjusting HDR or my tv monitor. HDR is off now and I gain around 5 fps for those heavy clouds and rain. But sometime I have to turn the brightness down on the nivida cp to get the darkness in the thunderstorms. Using 980 card. I really like this tweak.

Could you tell us what needs to be modified regarding the haze ?

 

Thanks

 

I found those lines that in the original one are not present:

 

//------------------------------- GEO ---------------------------------------------

float3 GEO_Haze(in float3 FogColor, in  float fFogDensity, out float kFactor)

{

float MaxPow;

 

    #if defined(SHD_HDR)

MaxPow  = 1.0f + saturate(cb_mLights[sUN_LIGHT].mDiffuse.g - 0.2f) * 1.4f * 2.0f;

#else

MaxPow  = 1.0f + saturate(cb_mLights[sUN_LIGHT].mDiffuse.g - 0.2f) * 1.4f;

    #endif

 

kFactor = clamp(1.0f + (fFogDensity - 0.00000000180f)/(0.0000000000f - 0.00000000180f) * (MaxPow - 1.0f), 1.0f, MaxPow);

return pow(saturate(FogColor), kFactor);

}

 

float3 GEO_FogPS(const float3 cColor,

             const float  fDistance,

             const float  fFogDensitySquared,

             const float3 cFog)

{

    #if defined(SHD_ADDITIVE) || defined(SHD_MULTIPLICATIVE)

        return lerp(float3( 0, 0, 0 ), cColor, saturate(exp(-fDistance*fDistance*fFogDensitySquared))); 

    #else

return lerp(cFog, cColor, saturate(exp(-fDistance*fDistance*fFogDensitySquared))); 

    #endif

}

 

float3 GEO_FogPSSquaredDist(const float3 cColor,

             const float  fDistanceSquared,

             const float  fFogDensitySquared,

             const float3 cFog)

{

    return lerp(cFog, cColor, saturate(exp(-fDistanceSquared*fFogDensitySquared))); 

}

 

 

float4 GEO_VolumetricFogPS(const float fPositionY,

                       const float4 cColor,

                       const float  fDistance,

                       const float  fFogDensity,

                       const float3 cFog)

{

    const float distQuared = fDistance*fDistance;

    const float signOfY =  ceil(saturate(fPositionY)) - ceil(saturate(-fPositionY));

    const float oneOverY = 1/fPositionY;

float kFactor = 1.0f;

    float4 FinalColor = cColor;

float horizonFogDensity = fFogDensity;

 

//Don't fade or override layers by default.

float3 layerEnableFade = float3(1, 1, 1);

 

//If no horizon fog we also want turn off fog layers as we get over the layer.

#if defined(SHD_NO_HORIZON_FOG)

horizonFogDensity = 0;

 

//The horizon fog layer enabling is based on the camera and layers.

layerEnableFade = float3(cb_mFog[0].cb_mFogNoHorizonLayerEnable,

cb_mFog[1].cb_mFogNoHorizonLayerEnable, 

cb_mFog[2].cb_mFogNoHorizonLayerEnable);

 

#endif

 

    const float layer[3] = { layerEnableFade[0] * cb_mFog[0].cb_mFogEnable, 

        layerEnableFade[1] * cb_mFog[1].cb_mFogEnable, 

                             layerEnableFade[2] * cb_mFog[2].cb_mFogEnable };

 

    const uint belowBottomLayer = ceil(saturate(-fPositionY - cb_mFog[0].cb_mFogBase));

 

#if defined(SHD_ADDITIVE) || defined(SHD_MULTIPLICATIVE)

float3 horizonFog = float3(0.0f, 0.0f, 0.0f);

#else

float3 horizonFog = GEO_Haze(cFog, horizonFogDensity, kFactor);

#endif

    

#if !defined(SHD_NO_HORIZON_FOG)

FinalColor.xyz = (FinalColor.xyz * belowBottomLayer) + (GEO_FogPSSquaredDist(FinalColor.xyz, distQuared, horizonFogDensity * kFactor, horizonFog) * !belowBottomLayer);

#endif

 

    //Loop through the fog layers to calculate the layer colors.

    [unroll]for(int i = 0; i < NUM_FOG_LAYERS; i++)

    {

        [branch]if(layer > 0.0f)

        {

            const Fog fog = cb_mFog;

            const float yMinusBase = fPositionY - fog.cb_mFogBase;

            const float yMinusTop = fPositionY - fog.cb_mFogTop;

 

            const float signOfBase = ceil(saturate(fog.cb_mFogBase)) - ceil(saturate(-fog.cb_mFogBase));

            const float signOfTop = ceil(saturate(fog.cb_mFogTop)) - ceil(saturate(-fog.cb_mFogTop));

            const float cameraInLayer = saturate(-signOfBase*signOfTop);

            const float pixelInLayer = saturate(-1 + ceil(saturate(yMinusBase)) + ceil(saturate(-yMinusTop)));

 

            float ratio = abs(saturate(oneOverY * saturate(signOfY * signOfBase) * yMinusBase) -

                              saturate(oneOverY * saturate(signOfY * signOfTop) * yMinusTop));

 

            ratio = saturate(ratio + saturate(cameraInLayer + pixelInLayer - 1));

            ratio = lerp(ratio, 1 - ratio, cameraInLayer * (1 - pixelInLayer));

            

#if defined(SHD_ADDITIVE) || defined(SHD_MULTIPLICATIVE)

float3 fogColor = float3(0.0f, 0.0f, 0.0f);

#else

float3 fogColor = GEO_Haze(fog.cb_mFogColor.xyz, fog.cb_mFogDensity, kFactor);

//float3 fogColor = colors;

#endif

 

FinalColor.xyz = GEO_FogPS(FinalColor.xyz, ratio * fDistance, fog.cb_mFogDensity, fogColor);

 

            #if !defined(SHD_ADDITIVE) && !defined(SHD_MULTIPLICATIVE)

   horizonFog = lerp(horizonFog, GEO_Haze(fog.cb_mFogColor.xyz, fog.cb_mFogDensity, kFactor), cameraInLayer);

#endif

        }

    }

 

#if !defined(SHD_NO_HORIZON_FOG)

FinalColor.xyz = (FinalColor.xyz * !belowBottomLayer) + (GEO_FogPSSquaredDist(FinalColor.xyz, distQuared, horizonFogDensity * kFactor, horizonFog) * belowBottomLayer);

#endif

 

FinalColor.xyz = GEO_FogPSSquaredDist(FinalColor.xyz, distQuared, horizonFogDensity, cFog);

 

    return FinalColor;

}

 

//------------------------------- ---------------------------------------------GEO

Hi Paolo,

 

Your script I have added , flushed the shaders and looked at several altitudes and several weather themes how it looked.

Perhaps I am doing something wrong as I cannot see any difference...

 

Regards

Gerard

Hey Gerard,

I'm trying now too, but as you said I can't spot any difference, so I really don't know if is there something wrong, I just downloaded the file provided on avsim.su on this topic http://www.avsimrus.com/digest/topic/140389-terrain-haze-atmospheric-effect-by-knossos, then I opened it to see what is changed, and I've just added the line on top of the attached GPUterrain.fx.

Maybe PE11e can help us on what he did to make it work!

The adjustments where originally made for P3Dv3 and 3.1...

yep, but from the pics posted from PE11e he found a solution to get it work! ....Waiting patiently....

Also waiting for the haze-tweak. I miss having this in P3D. Looks really good in X-Plane for instance.

-------------------------------
Realism Shader Pack v1
-------------------------------

Every shader tweak from previous version included plus added rayleigh scattering, dark clouds at night and some adjustment to HDR.

 

Download the pack here:
https://www.dropbox.com/s/…/Realism%20Shader%20Pack%20v1.zi…

 

Install notes and additional info with shaders description are included in the readme file!

 

NOTE: this is beta pack, and although everything seems fine after my testing, please test the tweaks and report your results here! After day or two of beta testing, I will upload the pack to AVSIM library also, as a final version.

 

Enjoy your new realistic visuals captains!  :smile:

 

 

 

 

 

 

Thanks Pe11e!!!

Thanks Pe11e!!!

 

You're welcome. Everything for visual realism and immersion!  :smile: