There was an update or a series of updates that screwed up everything here, for about a week now I’ve been fiddling randomly with all the buttons I see, I have no idea what I’m doing, as a result some things are working and some things still not. I’ve tried rolling back Manga+Press to previous version, I’ve tried installing ComicPress (but instructions seem out of date or plain wrong), I’ve clicked buttons on and off… I’ve discovered that I really really hate WordPress and if anyone has a better free option to display simple goddamn images in a sequence, I’m listening.
Meanwhile, all the permalinks seem to be working right now. So you can go to any one page, like for instance #166 here:
http://au3fg5.wcbzw.com/comic/page-166/
and from there navigate to any other page you want. I think. Let me know if that doesn’t work either. Right now I’m not even sure this blog post will work properly.
Here’s the very first page, if you prefer starting from there:
http://au3fg5.wcbzw.com/comic/cover-2/
Thanks for your patience and patronage 🙂
2017 note: This is a tutorial I wrote about 3 skin shading hacks I invented 18 years ago. I’m dusting it off again, because though this has become irrelevant for cinematics, it may still be useful to real time graphics.
Skin shading could be the single biggest hurdle in realistic cg… as for me, I’ve been wrestling with it since my beginnings 1995. And when I say wrestling, I mean I’ve been extremely frustrated by it, mainly because (until recently) very few knew much about it, and no one could answer my questions. So -99 I made my own method, basically a collection of 3 tricks, a direct approach that doesn’t require simulation. (When we have the power to do nice simulating, of course we should do that.) Terminology:
Day side = where light reaches
Night side = where light doesn’t reach
Terminator = the transitional zone
(2017 note: please excuse the lack of eyebrows, lashes and normal maps. Normal maps didn’t exist at this time, this is using bump maps. Also sculpting didn’t exist, this is a Subdivided Surface tweaked vertex by vertex in Maya.)
#1 Faking Translucency
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As you probably know, if you put a skin-color texture in the Diffuse (now called Albedo) of a Lambert, you get something like a zombie.
The skin seems a horrible greenish gray on the night side, no matter how realistic your paint job, and metallic orange on the day side.
So we need to make the day side cooler (bluer), and the night side warmer (redder). Also, we need to make the terminator the warmest of it all.
My first efforts used the ambient or incandescence channels (now in UE4 called Emissive) to make the whole head redder. I sometimes even tried making the color channel and spec channels bluish. But this is limited – when you get the terminator as warm as it must be, the night side is too red, and the day side too bright.
So what to do? As an artist who used to paint in the real world, before digital, I can’t help wishing I could reach out and paint the exact color I want, exactly where I want it… and so the answer came, perhaps too simple or obvious for people with a more scientific mindset… but in my experience this trick creates a credible illusion of skin (and other organic materials), for very little effort and rendering time.
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Find a way to edit the light based on the angle between the incoming ray, and the surface at that point. 旋风加速器官网下载地址 Thus enabling us to edit the colors of the terminator, day side, and night side each separately.
Most cartoon shaders have this function, and if you can get rid of the sharp edges that’s it, done. (We’re not going to use any outlines.)
The shader I use here takes its color info from a ramp (in Maya, just switch the interpolation to anything other than ‘none’). The original cartoon shader I used came from Tom Kluysken’s ‘Maya Queen’ site, and has been attributed to Duncan Brinsmead and Michelle Borghi.
(2017 note: today this might be called applying a 1D LUT, or color grading, which is commonly applied last as a global post process, I can’t seem to find any recent examples of it being applied like this, first in the process, to the initial rendering of specific materials.)
Here’s the graph in Maya for the translucency-fake (cartoon shader): (2017 note: I’ll leave it out since it’s obsolete.)
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#2 Highlights
The highlights are a whole other set of problems. For this reason I like to isolate them on another layer, in fact here I use 2 layers: one for the glancing highlights (like the one on the left), and one for head-on or ‘flat’ highlights (on the right side). They gradually cross-fade into each other as the light revolves around the model.
(2017 notes: This dual architecture was later adopted in the Misss_Fast skin shader by Zap Andersson. What I call highlights here are called ‘lobes’ today.)
The important thing is to map whatever parameters the shader has for changing the highlight with regards to the angle between the light rays and the camera. In Maya you can use Blinn, SamplerInfo node, or ramps to control this change.
(2017 note: today this is called a Fresnel function)
Lets look at the most important and trickier of the two, the glancing highlight. It must become brighter and bluer and wider as the light becomes more and more glancing, finally flaring out into a long thin line in opposing light. (Now known as rim light.) Since I have another layer to handle the flatter angles, I make this glancing layer fade out before it hits ‘noon’ (makes it simpler if the highlights don’t overlap).
(In fact both layers are always slightly bluish – any specularity on skin must be somewhat blue to counteract the default tendency towards yellow/orange. This can be applied to other organic materials as well, like for instance greenery – in that case the highlight would be tinted red/magenta.)
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Any bump map should be of higher value on the specular and ramp layers, than the same one on the base-layer. This greatly increases the illusion of translucency.
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And that’s it – here’s a different angle. The lighting: 8 spotlights – 2 fairly tight clusters of 4 each, roughly opposite each other.
(2017 note: this image is not raytraced, and should be possible to duplicate or improve on with just 2 lights in UE4 or any other game engine today. It would render extremely fast. If only Unreal would add the relatively simple functionality to make it possible. I was able to replicate these tricks in UDK, but then too many things changed for the next version.)
Copyright Steven Stahlberg 2001
Rated M for strong language and nudity
After working on this story for about ten years I’ve finally decided to pull the trigger – I’ve realized it’s very unlikely to ever become a movie or book or musical or opera, so I’m choosing a medium I’m comfortable with and can work for free in my spare time – a comic. I also happen to love comics, I used to make them, yet haven’t made any in over 30 years… so for me this is a kind of fond coming home.
This is the cover so far. Disclaimer – I’ve worked it and reworked it, as part of experimentation and trying to find a style. It’s been difficult for me to find a balance between line and color, I think I’ve found it but I thought that before. This means it may still be a work in progress.
It’s supposed to show the protagonist in a symbolic quandary, indicative of her over-arching distress of not being fully human: she loves music, just like we do. She’s tried to play the blues on a guitar, but she pushed too hard and it broke.