Ambient Occlusion Shader

[xam]

Hello各位，3ds max 8 發布會當天答應會把TipsNTricks的東東在CGV發表，今天終於擠出點時間來把承諾對現，請諒...

開始...簡單點說，Ambient/Refelctive Occlusion Shader可以用作模擬GI的效果，而速度較快。如要更詳細理解，可到http://www.cg-academy.net/pages/free_tutorials/tut_ambient_occlusion_shader/tut_mentalray_ambientocclusion_shader.htm看看，小弟在這裡把使用過程說明一下。（注意：Ambient/Reflective Occlusion Shader是3ds max 7中Mental Ray 3.3的東東，max7以前是沒有的。）

[soZon]

thanks for share , xam

[xam]

哇~~估唔到要登頭條....慚愧

[S'tephen]

我想問當我用Mental Ray render，

我set 好左一些燈，但無反應，請問ｄ燈是什麼問題呢？

　

[welco]

請問最後果張系點整架?
我有打skylight 但系同你的唔同
請問我錯系邊呢?

[welco]

請問最後果張系點整架?
我有打skylight 但系同你的唔同
請問我錯系邊呢?

[xam]

請問最後果張系點整架?
我有打skylight 但系同你的唔同
請問我錯系邊呢?

U need to use Light Tracer rendering engine for the Skylight towork.

Or u can also use Mental Ray with Final Gathering turned on.

Only these two methods can rendering the skylight correctly.

[Aspal]

我跟住這setup 設定
但效果是如下圖

你d lighting 點set????

[Aspal]

個SETUP 是如下
請救下我吧!!!

[sobig]

you can try the simple way to do.
no GI, no sky light, no Final gathering.
you just apply a MR Occlusion shader to your object.
then set higer sample of the shader. eg. 512...
you will the simliar result.

you can try my sample file

[sobig]

it will look like.....

[sobig]

you only need to set the sample higher....
then, the noisy will be disppeared

[水長流]

點解我加左 sky light 後, 個light tracer 就disable 左 ,按吾到既?

[sobig]

are you using light tracer with default rendering?
it works to me.

[櫻花楓葉]

很不錯的教程啊。。謝謝分享。。。。。