As some you might have seen in the news section here: http://www.cg-cars.com/forum/showthread.php?t=5786 I have released a free sample from http://www.hdri-locations.com The thread quickly turned into how to use the files, and I was suggested to post in here instead so there was a place for people to ask questions about how to use the files and setup a scene.
Here is a few of my renderings:
There are more examples on the site.
To start with I can tell a little bit about how I made these renderings.
First of all I knew from the start I wanted the car to be black, as I have done any of that for awhile, And to make black cars you need something where the sun is very low or it has already set. For example a black car in full sun very rarely looks any good.
For the renderings I used max9 64bit and vray 1.5 I didn't use any LWF or color mapping. So backplates are just gamma 1.0 and the hdri is gamma 2.2 So it's loaded in the scene using the color correct plugin with the gamma adjusted to 0,45 to compensate. I use the normal bitmap loader and not the vrayhdri map since the vray version use its own memory space which is limited, so it runs out of memory very fast, especially as the hdri file is 11500x5750. But when you use the the normal bitmap loader it actually flips the hdr map, so if you want things to match in the scene then you have to set the tiling to -1 in the U direction, if you don't do that it's never going to match.
For lighting I just put the hdri map in a vray dome light, and I'm NOT using any GI.
Materials are very simple, the black paint is just a vraymtl with the diffuse almost totally black, think it was 10,10,10 or something, and then just reflections with falloff/fresnel. Black plastic is just black with some glossy reflections, and glass is just transparent with reflections with falloff/fresnell.
I should also mention that I cheated, I actually boosted the contrast of the hdri map using the colorcorrect map, this is something I almost always do when working with hdri maps. Might not be physically correct, but to be honest I don't give a damn as long as it looks good
Anyway, if you have any questions regarding the free sample, or have any renderings showing how you used the files then feel free to post in here.
Thank you, I will certanly need these tips. However, good to know these pictures are rendered and not real photography :P
I didn't work much with hdris so I am not sure what do you mean with this: "So it's loaded in the scene using the color correct plugin..." I will google it around though.
Thank you, I will certanly need these tips. However, good to know these pictures are rendered and not real photography :P
I didn't work much with hdris so I am not sure what do you mean with this: "So it's loaded in the scene using the color correct plugin..." I will google it around though.
check this site, I found with in hdri-location.com FAQ
But I agree with Smart, add more contrast to the hdri, and give the black rubber parts around the windows and tires some reflections, they are almost 0,0,0
But I agree with Smart, add more contrast to the hdri, and give the black rubber parts around the windows and tires some reflections, they are almost 0,0,0
/Thomas
heh, no it is my A3, yours is better modelled :o: ok, will try it
Thomas, many thanks for starting this thread for the Q&A, as I had a few that I wanted to ask about as I've just started using your LOVELY files :buttrock:
I'll be back later today to fire a couple of quick questions, but just got a new camera + big lens to play with first
Spend all day playing with, but can't get good looking image. The HDRI itself is superb just my lame skills can't show the beauty of it. Anyway here it is what i've got.
trianglefx, your render looks good for first time playing with HDRI But car looks too big (like SUV, IMO) and something wrong with glass material - it doesn't reflect environment.
trianglefx, your render looks good for first time playing with HDRI But car looks too big (like SUV, IMO) and something wrong with glass material - it doesn't reflect environment.
Yeah you're right about it. But the main goal for me was to achieve those nice reflections on the side of the car as Suurland did. But came with no luck(spend all day). I don't know what i'm doing wrong with mats or with render settings that on flat surface i can't get reflections. At first i thought the angle of hdri is bad then i've done 36 renders every 10 degrees. and came with no clearly visible reflection on the side. On the bends its seems allright. btw my windows material has reflections but it doesnt reflect, at some angle the windshield reflects but not the side ones.
Reply With Quote
Originally Posted by digitaleyes
