(totally outdated !) Blender to Indigo photorealistic grass

[SurX]

http://www.charlesrazack.com/3d/tuto1/tutograss-2-7.jpg

i have version 1.0.9 indigo .. i dont know which option configure .. please any try capture screenshot for version 1.0.9 .. please help

[Jambert]

Don't know the exporter you use, I work with "blendigo", but parameters are the same.

For exterior scene use bidirectional (for interior too), filter D65 is good... save IGI and use violet tone mapper for corrections of reinhard if doesn't look good

http://www.indigorenderer.com/joomla/in ... &Itemid=62

[SurX]

i dont know , where open xml with my metarial ( maked in bledner ) ..

[Bogey Jammer]

The tutorial doesn't seem to be outdated o_O

But what does mean:

you'd rather use an instanced grass patch to get more accurate results.

I see nothing talking about "instanciation" in Blender

[StompinTom]

alt-D creates an instance instead of a duplicate in Blender. basically it uses the same mesh, so if you change it, every instance gets changed. Blender 101.

[Bogey Jammer]

Blender 101

Ok, but the tutorial shows exactly this technique, so I don't get the point about it. Maybe I'm thinking too much...

[StompinTom]

alt-D will prevent Blendigo (and Indigo) from exporting/loading/using the identical mesh multiple times (aka a waste of memory and time). if the mesh is identical, why should you load it twice? so what it does is make the renderer and exporter reference the original mesh any time it comes across an instance of it. bit like a placeholder for the real thing.

upon reading it again, it seems to me to be saying to use a patch of MODELED grass and instance that over your scene instead of using the alpha-mapped grass trick. so if you modeled/downloaded a small patch of grass, just use that and apply a green material to it. no more mucking around with alpha maps.

the downfall of this, of course, is the dramatically increased poly count which generally slows things down. however, if youre a purist like most of dem oh-but-thats-a-hack! people, modeling real grass is the way to go. of course, then it doesnt matter from what angle you look at it, itll still look like grass, so it really depends on your situation.

good luck, i hope this was somewhat helpful.

[pixie]

I just have added the material to IndigoDB

[winnabago111]

So i copied the xml stuff as said and saved the file and it doesn't make a difference. After i edit the xml and save is there something i have to do in blender to activate it.

[Tasaki]

hello, im new to the forum, im very interested in this especific topic... but i really cant find the XML file in my .blend folder...
am I doing something wrong or I skipd somthing hahaha... I just set UP the materials direct in the Blendigo's GUI, save the blend but theres no XML file for the materials... indigo 1.1.14
im really sorry been posting here... its an old topic but I really need this teq in a scene im making...
can some one help?

^^ thanks in advance

(sorry my bad english)

[Kram1032]

(totally outdated!!!)
You absolutely don't need that tutorial anymore (the export part at least), as Blendigo gained features which do those for you automatically!

[nathan.h]

i can only get the "Default" material to render when using the blend option in blendigo. changing it to any other texture results in this error message:

"IndigoDriverExcep: SceneLoaderExcep: Blend Material: no material with name 'grass_text' defined. (In element 'blend', around line 23, column 9)"

thus i can only render the grass as the default gray material.

my material.xml file:
----------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>

<scenedata>
<material>
<name>Default</name>
<diffuse>
<albedo_spectrum>
<rgb>
<rgb>1 1 1</rgb>
<gamma>2.2</gamma>
</rgb>
</albedo_spectrum>
</diffuse>
</material>

<material>
<name>null</name>
<null_material/>
</material>

<material>
<name>grass_text</name>
<blend>
<a_name>null</a_name>
<b_name>grass_text</b_name>
<blend_factor>0.5</blend_factor>
<blend_map>
<path>..\..\users\nathan hamilton\desktop\3d work\lighthouse\textures\grass\grass_1_alpha.jpg</path>
<uv_set>uv</uv_set>
<exponent>1.000000</exponent>
<a>0</a>
<b>1</b>
<c>0</c>
</blend_map>
</blend>
</material>

<material>
<name>ground</name>
<phong>
<exponent>500</exponent>
<diffuse_albedo_spectrum>
<rgb>
<rgb>0.204785 0.33878 0.165088</rgb>
<gamma>2.2</gamma>
</rgb>
</diffuse_albedo_spectrum>
<ior>1.60838</ior>
</phong>
</material>

</scenedata>
----------------------------------------------------------

blender v2.48
indigo x64 v1.0.9
blendigo v1.0.9

thanks.

[Kram1032]

it would be of more use if you would also post screenshots of the materials inside blendigo........................
and maybe try to switch to the newest Versions of Indigo and Blendigo... (as the latest Indigo seems to be quite stable...)

[nathan.h]

i thought that the v1.0.9 that i was using was the most up to date build of both indigo and blendigo.

a shot of the working default material blended with a null:



and its render:



a shot of the nonworking grass_text material blended with a null:



and the same grass_text as a diffuse material:



and its render:



thanks for your help.

[winnabago111]

I downloaded the grass file with the xml and I still cant get the grass to work. It just looks like this every time.

http://www.charlesrazack.com/3d/tuto1/tutograss-2-8.png

Do I have to add in the XML somewhere. And is there a updated grass tutorial cause Im using 1.1.18 and blendigo 1.1.18. Thanks.