environment(bla,bla); bug?

[AndrewVK]

1. Create simple environment texture:

from top to middle - white colour

from midddle to bottom - red colour

2. Convert texture to Rat format (to enable blur)

3. Create simple scene: sphere on the plane.

4. Aplly this shader:

surface

test(

string env="";

float envblur=0.0;

)

{

vector Nn = frontface(normalize(N),I);

vector NnS = wt_nspace(Nn);

vector envcol = environment(env, NnS, "wrap", "repeat",

"filter", "box", "width", envblur);

Cf = envcol;

}

In this case plane and half of sphere MUST be lit with uniform white

and bottom half of the sphere with uniform red....however

....plane appears in pink

....pink dot appears on top and bottom pole of the sphere

Whats wrong? (<---my favorite smile)

[stevenong]

Hi Andrew,

When you see pink(or salmon colour) on your geometry, it means the map doesn't exist or it can't be found.

I tried the shader & it works for me.

Suggestion:

#pragma hint env image

It makes testing easier.

Cheers!

steven

[AndrewVK]

Hi Steven,

I cant attach my image

Please check mail.

[stevenong]

Hey Andrew,

Okay.

[AndrewVK]

In short form "vector environment(string map; vector D)"

without additional argumets uses "repeat" wrap mode which causes problem!

Just use full form with "streak" wrap mode & problem desapears