Problem Using 32 Bit Image In Shake

Compositing
1

hi

i m rendered one diffuse and z depth pass using maya, and set the image depth to RGBA (half)4X32 bit. if i open in that image in imf_disp.exe (image viewer) i can view the images (i cant view z_depth coz imf_disp doesnt support view of z_depth). but when i open these images in shake, it doesnt show any thing, not the diffuse and also not the zdepth. now my question is how can i composite the image using shake.

thanks

kedar nath

2

What file format are your images? .exr??

Tim Walker

3

i rendered tiff (uncompressed), and also tried tga,

kedar

4

Taga's can only do 8bit so thats probably why they didn't work.

Try maybe rendering .iff images or maybe even a sequence of .exr's.

.tim Walker

5

thanx for the reply, i tried exr format, i can open the image in shake, its working with color and alpha, but i cant view the z-depth in that. and if u can explain how to extract the data from exr image, and also how to render the image in maya ( i mean how to tell the computer to render motion vector, u, v ect data to that exr image)
thanks

kedar

6

http://www.highend3d.com/shake/tutorials/g...in-Shake-6.html

7

thanx for the tutorial, but this i know how to add the zdepth in shake, but its working with the 8 bit image only, i cant work the 32 bit image..

kedar

8

That tutorial covers what you need to do. You have to remap the range of the zdepth because maya by default writes it in the -1 to distance from camera range which you can't see. This is the same thing the "view maya z" macro does.

9

-1/distance.

But incidenttaly maya only writes out zdepth in iff files no matter what, even if you specify tif as source (havent tested maya 6 open exr tough). And no matter what depth the iff is the z i allways flowating point!! Offocurs eyou nee dto specify maya to render z depthin firstplace.