分開黎render的問題!

[tomlau8]

假如我想rend段片,前面兩個波有movement,背景不動,我系咪先rend一格背景,再獨立rend兩個波,再rend light map,最後在after effect合成??
聽人講將個scene分開黎rend,之後合成會快d,但系要點做先可以分開rend??我用左skylight+light tracer+direct light,例如我想rend前面的波,我系咪應該hide哂其他野??如是者個波的底部就冇左light tracer的陰影!
如果乜都唔hide的話同平時rend的時間一樣,點先可以skip左其他野唔rend住而剩系rend當前的波??謝謝^^

ps. "gelato"有冇人用ga??好似話用佢會rend野快d,不過好似商業用多d喎.....

[LoGao]

試試select 要hide o既 object,
right click, 揀 properties,
o系rendering control o個度熄o左 visible to camera.

[sobig]

or you can render two layers for each ball.
then, you can have a better control for your compositing.

Matte/Shadow shader can do that
assign it to the ball that you want it to invisible.
then, you will the another ball that is visible.

remember to uncheck the "Receive Shadows" in the Mette/Shadow Shader.

[tomlau8]

多謝解答^^不過都唔系好明分開黎rend然後再合成的步驟~可否一步步講下??
我而家有個scene,有個地下(displacement),兩個object,一個skylight(開左light tracer),一個direct light(開shadow):
1)我應該點樣分拆黎rend??
2)其實alpha通道系咩黎??
3)0系個object度開motion blur好唔好??or 後期加先好??
3)可以講講我應該點做(步驟)??

雖然而家間公司唔系用3d max,不過都想了解下rend野同合成ge程序

[sobig]

1. when u render the monster, you can uncheck "visible to camera"
then, you get the monster layer.
another character is also.
for the background, u need to uncheck those two characters"visible to camera".

if u use GI render, "visible to camera" is important..it seems that the character will be hidden. but PC will calculate your GI among characters and the ground.

[sobig]

here is the setting...

[sobig]

alpha channel is the transparency layer.
eg. you render your character layer that should have a alpha channel. that means the transparency background.
u should render TGA file.
when u import it into AfterEffect, it will ask about the alpha channel. then, u should click the third one.

[sobig]

3. for the motion blur...depends on your time and pc.
for production house, we prefer the 3D blur rather than 2D blur(post-production blur) if we got time to render it.
i guess you should get enough time to render...

[sobig]

any question, pls let me know

[tomlau8]

"GI"系咪要開mentalray先有?我用default renderer的,如果唔tick visible to camera的話都要rend埋睇唔到ge野,咁hide黎做乜??一樣rend咁耐~
for問題1:關左monster的visible to camera,咁monster layer咪冇左只monster?
2)系咪用render elements黎分開rend?
3)如圖,ball,plane系咪咁分開rend??之後用ae合成??感覺一齊rend同分開rend的時間差唔多,如果有兩件野分開rend咪用多倍時間?
4)個影可以分開rend嗎,而家系連埋個地一齊~系咪用matte/shadow

謝謝解答^^

[sobig]

good trying...
support!!!

max gi有好多....mental ray本身有..
用default render就用radiosity or light tracer
depend on你想要咩result.

[sobig]

1. 你唔系想分開兩個character render? 咁樣咪易tune色law..

2.正路系用render elements分開layer....有時唔需要太complex既layer...我會用唔同shader assign周一個object...再分開render.
e.g. color diffuse shader, specular shader and etc...

3.時間可能仲耐....分layer render目的只系方便在aftereffect tune 色...唔洗下下再render,

4.系...用matte/shadow...記住render時 invisible左個object...咁就可以render一張shadow layer.

[sobig]

試左咁耐..有冇d正render睇下

[tomlau8]

再一次謝謝解答!!^^
我因為之前rend一格圖都要5個鍾(320x240).........所以先諗分開rend再合成會唔會快d~~~我兩個公仔都有開motion blur,全部都turbo smooth系"2"
1a)如果rend影,個地系咪唔可以hide/唔剔vis.to cam.,因為試過之後冇左個影,換言之系咪個影一定同個plan一齊??
1b)接上題,可唔可以only rend個影(唔連地rend)之後合成時放個地做底,影做面得唔得?因為個地冇motion,連影一齊rend好似浪費左時間~
2)color diffuse shader同specular shader 0系邊度搵??
3)其實用alpha同綠色背景有咩唔同??3ds max 同photoshop的alpha(channel)系咪一樣??
因為rend左幾格已經死機所以冇乜正ge render(有果d都唔正),我諗都要一段時間先rend到野出黎喇......

[Vantage]

再一次謝謝解答!!^^
我因為之前rend一格圖都要5個鍾(320x240).........

一格320x240要咁耐?? 你系咩配置?