You can set transparency if the skin texture of the water model has a alpha channel (in which the alpha is set).

Why does WED crashs?

If I use your level, the code works, but if I try to use your code in any other level, Wed crashs and it doesn't give any information.
The steps that I did to use your code:
* Make a new level.
* Open Map Properties and set the script to water_shader.wdl.
* Put water model inside and give it the water action.
* Run the level and Wed crashs.


OBS.: The engine is crashing, not Wed. Sorry!

Yes, finally. Just when I was going to my bed, I decide to give it just one more try. It is working now. But it gives me some limitation. For instance, you use a called model floor.mdl as water. He only has 4 vertexes and two faces. And I need to use a terrain with 2025 vertexes. With my terrain, the effect is realy terrible.

This is with your floor.mdl:


This is with my terrain:

This happens if your terrain has no 3rd skin.
1# skin: render-to-texture texture
2# skin: not used
3# skin: normalmap

Thank you. That's the reason, because it works now.
And the reason that I coudn't use it before is: This shader needs blocks in the level. And all my blocks is map entities. So, with a big hollowed block with the sky flag on in my level, the shader started to work.

The skin texture of the water model has a alpha channel. Now how can make it look a litle bit transparent?

I thought with a alphachannel it would work, but it doesn't. There must be something changed in the shader.

With the other shader that Iwas using, the one that only reflects the sky cubes(Steempipe's), I could set alpha transparency with this:

Code:

---

 
                AlphaBlendEnable = True;
		ZwriteEnable = True;
		ZEnable = True;

//  Main point is that pixelShaderConstant 'W' will control the alpha tranparency.  The XYZ will adjust some coloring.

		PixelShaderConstant[0] = {0.80,0.80,0.92,0.88}; // x, y, z, w 

---

,before "VertexShader = compile vs_1_1 WaterBump_VS();"

This Water Reflection impressed me, can you release the code?

to adjust the transparency try something like this fake fresnel term i devised:
put this in your vertex shader output struct:
float4 fresnel: COLOR0;

put this in the vertex shader:
float3 PositionWorld = mul(Pos, matWorld);
float dist=distance(PositionWorld, vecViewPos);

if (dist<=300)
{
Out.fresnel.xyzw=dist*0.005;
}

if (dist>300)
{
Out.fresnel.xyzw=1.0;
}

put this in the pixel shader input
float4 fresnel:COLOR0

then in the pixel shader at the end:

float4 final=reflection;

float3 watercolor=(0.58,0.65,0.63); //adjust this change water coloring

final.rgb*=watercolor;

final.w=(1*fresnel)*0.8;

this adjusts transparency based on view distance-but your water terrain needs a lot of faces. You said yours did so it should work. There are better ways to do this, like a real fresnel term, but this works for my purposes.

also, in the technique part of the fx file put these lines before you compile the shaders:
zwriteenable=false;
zenable=true;
alphablendenable=true;