Search found 153 matches

Search found 153 matches
by IanT
Tue May 08, 2007 4:13 am
Forum: Indigo General Stuff
Topic: is maxwell a better renderer?
Replies: 78
Views: 22215

Deus wrote:I dont think that the 15 minute renders are relevant. I would like to see which render first converges under a certain noise value that is Low. :)
Agree ... might be a good idea to use Maxwell 1.1 too :wink:

Ian.
by IanT
Mon May 07, 2007 10:59 am
Forum: Indigo General Stuff
Topic: is maxwell a better renderer?
Replies: 78
Views: 22215

I think you have to notice that in indigo there is still no "build-in"/while rendering noise-reducing tool, at Maxwell, I don't know....

99% sure there isn't one in Maxwell either.

Ian.
by IanT
Mon May 07, 2007 10:58 am
Forum: Indigo General Stuff
Topic: is maxwell a better renderer?
Replies: 78
Views: 22215

Interesting test but the reflections on the Maxwell render look completely wrong. My bet is that it's something wrong with the model (probably at the export or import stage). I'm fairly sure Maxwell can handle something as simple as a specular highlight with the correct geometry :wink:

Ian.
by IanT
Sun May 06, 2007 9:54 pm
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Just like to clarify to the IanC who's a year older than me, so obviously losing his memory and going senile ;), that the home computer revolution began with the ZX81 in 1981 and even before that with the ZX80 in 1980. The ZX82, to be released in 1982, was renamed ZX Spectrum for it's use of colour...
by IanT
Sun May 06, 2007 4:53 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

started with the Sinclair ZX81 ( 3.25Mhz Z80 , 1K RAM expandable to 16/48, monochrome UHF display) a BBC Micro Model B ( 2Mhz 6502 , 32K RAM, 16 colour display) ok... your first PC had 2 colours, 3.25Mhz and 1kB RAM. your 3rd had 16 colours, 2 Mhz and 32kB RAM... So, your first PC was faster in ren...
by IanT
Sun May 06, 2007 4:32 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

the source is sent. good luck getting it to compile, if you cant, just try downloading jbuilder, its probably the most awesome java ide anyway. btw, how'd all you people get access to computers and learn how to program them so long ago? Thanks, I looked at it briefly and can't see much wrong with t...
by IanT
Sun May 06, 2007 12:56 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Kram1032 wrote:I never wrote one.
15 years ago, I was 2 years old, 21 years ago...
uhm... what was I, then?
( :idea: Philosophic question allert :idea: ) [those bulbs should emit red, atm]
Hmmm ... 21 years ago the twinkle in your father's eye was just a spark?

Ian.
by IanT
Sun May 06, 2007 12:22 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Oh no, not the Java/C++ speed discussion :) LOL, yeh ... I rarely get involved in such discussions but when someone makes sweeping statements (that are false) and fails to back them up then I'm forced to bite :wink: wrote my first floating point library and on top of that a raytracer in assembly wh...
by IanT
Sat May 05, 2007 1:57 pm
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

I am done. Good luck to you! :) Lol, failed to back up "Java is always a factor 2-4 slower than C. When it comes to rendering make that factor at least 10.... " ... convenient time to leave :P I do have a "tiny" bit of experience in the rendering field and have done plenty of my own tests Re: C++ v...
by IanT
Sat May 05, 2007 12:17 pm
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Ok I can name 5 top of the line commercial ray tracers thats written in C/C++ but 0 ray tracers written in Java. Maybe its like that for a reason? (sunflow is not commercial and looks like a joke). Trust me they dont pick C because its harder to develop in and more error prone. They pick C/C++ for ...
by IanT
Sat May 05, 2007 11:06 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Java is always a factor 2-4 slower than C. Sweeping statement? This statement was true 5 years ago when Java was mostly interpreted but now it's not. The latest JIT compilers produce native code in exactly the same way a C++ compiler does (just at a different time). The JIT compiler has intimate kn...
by IanT
Sat May 05, 2007 9:27 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Hey oodmb ... you're making excellent progress. Don't be fooled by the myths that Java is necessarily slower than C++ (especially for rendering!) ... there's no fundamental technical reason why it should be ... the compilation to native code just happens at a later point in time after all. The best ...
by IanT
Tue May 01, 2007 12:04 pm
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

now for some reflection equations-- i have reflection down, now how do i mix it with the surface color and stuff... Use fresnel attenuation for maximum realism. Assuming that you want to make a shader for a diffuse substrate underneath a specular reflection coating... Calculate the fresnel term 'f'...
by IanT
Tue May 01, 2007 11:00 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

Excellent :)
by IanT
Tue May 01, 2007 9:37 am
Forum: Off Topic
Topic: programing a raytracer
Replies: 163
Views: 31333

nah, no back-face culling- i have it set up so that if it hits the back of the surface the normal is negated. the problem is that when i switch the verticies around the triangle changes position except point 0 and changes shape. i tried putting spheres at the same points as the verts, but the only ...
Search found 153 matches