Scaling Hydrax

A very simple problem : I want to scale down my water, and get waves with an appropriate size
I'm actually using a metric system defined as 1OgreUnit = 1Meter
That help to size objects in Maya, in Ogre an simplifying objects creation

My problem is that tweaking my .hdx approach what I want, but makes many bugs apperar
I've read this post to get some ideas, but I have a very horrible render

So if you have a method to reduce hydrax to that scale, it will be very helpfull

You've not modify any part of Hydrax sources, just change the Scale param of the Noise module.

Xavi

You've not modify any part of Hydrax sources, just change the Scale param of the Noise module.

Xavi

Could you perhaps post some sample config file that gives a decent water effect for a metric system, since i have the same problem and do not really know the meaning of all the parameters . Would be really helpful!

Thanks in advance!

And just in case you wonder: I tried to adjust the scale-parameter of the noise-module, but the results look very different to the same scene with a larger scaling like in the demo

Ok, so increasing complexity, reducing strength and scaling up (to 35 for me) the noise module work flawlessly.
There is however a little bug when switching to depth material : actually, if you are just on the sea level, you see the waves in front of you, and the depth material makes them blue (with a full alpha)
The entire scene is also covered by a blue shade.
And the water is also fully blue

Medium bug in facts, but as he block the reflections and refractions, he can be very strange looking sometimes

Ok, so increasing complexity, reducing strength and scaling up (to 35 for me) the noise module work flawlessly.
There is however a little bug when switching to depth material : actually, if you are just on the sea level, you see the waves in front of you, and the depth material makes them blue (with a full alpha)
The entire scene is also covered by a blue shade.
And the water is also fully blue

Medium bug in facts, but as he block the reflections and refractions, he can be very strange looking sometimes

I got it working too now, there was another error in my code which caused the trouble for me. I am also experiencing the same effect as SniperBinaire, but i can live with that at the moment.

Hi cgpauli!

I had got the same trouble (the sea appears have an x10 scale factor, no?), and, as say Xavi you only must edit the hydrax config file:

1.- Changing the noise scale.
2.- Changing the projected grid strength.
3.- Removing the smooth effect.

The first point is curious, because the Perlin scale factor is inversed (bigger scale factor = smaller noise). The third point is needed to avoid the objects on the sea appears that is flying.

I use this config file:

#Hydrax cfg file.



#Hydrax version field

HydraxVersion=0.5.2



#Main options field

<vector3>Position=0x0x0

<float>PlanesError=0.75

#Shader mode: 0=HLSL, 1=CG, 2=GLSL

<int>ShaderMode=2

<float>FullReflectionDistance=1e+011

<float>GlobalTransparency=0

<float>NormalDistortion=0.075

<vector3>WaterColor=0.0398721x0.124018x0.164179



#Components field

Components=Sun|Foam|Depth|Caustics|Underwater|UnderwaterReflections|UnderwaterGodRays



#Sun parameters

<vector3>SunPosition=0x10000x0

<float>SunStrength=1.75

<float>SunArea=150

<vector3>SunColor=1x0.9x0.6



#Foam parameters

<float>FoamMaxDistance=7.5e+006

<float>FoamScale=0.00075

<float>FoamStart=0

<float>FoamTransparency=1



#Depth parameters

<float>DepthLimit=20



#Smooth transitions parameters

<float>SmoothPower=5



#Caustics parameters

<float>CausticsScale=13.5

<float>CausticsPower=10.5

<float>CausticsEnd=0.8



#God rays parameters

<vector3>GodRaysExposure=0.76x2.46x2.29

<float>GodRaysIntensity=0.015

<float>GodRaysSpeed=5

<int>GodRaysNumberOfRays=100

<float>GodRaysRaysSize=0.03

<bool>GodRaysIntersections=false



#Rtt quality field(0x0 = Auto)

<size>Rtt_Quality_Reflection=0x0

<size>Rtt_Quality_Refraction=0x0

<size>Rtt_Quality_Depth=0x0

<size>Rtt_Quality_URDepth=0x0

<size>Rtt_Quality_GPUNormalMap=0x0



#Module options

Module=ProjectedGridVertex



<float>PG_ChoopyStrength=0.375

<bool>PG_ChoppyWaves=true

<int>PG_Complexity=264

<float>PG_Elevation=5

<bool>PG_ForceRecalculateGeometry=false

<bool>PG_Smooth=true

<float>PG_Strength=3.5



#Noise options

Noise=Perlin



<int>Perlin_Octaves=8

<float>Perlin_Scale=0.85

<float>Perlin_Falloff=0.49

<float>Perlin_Animspeed=1.4

<float>Perlin_Timemulti=1.27

<float>Perlin_GPU_Strength=2

<vector3>Perlin_GPU_LODParameters=0.5x50x150000



Take care, i use my unofficial version (0.5.2) with GLSL sharders, change for your convenience.

Waiting news!