bump mapping

darksmaster923 · Post by **darksmaster923** » Tue May 15, 2007 5:28 am

k how do you bump map level textures
and are 1024x1024 textures possible

zany_001 · Post by **zany_001** » Tue May 15, 2007 6:09 am

k im pretty sure there r unlimited texture sizes(good),and for bumpmapping i think you need a grayscale height map as well as main image,but after that i dont know.

darksmaster923 · Post by **darksmaster923** » Tue May 15, 2007 6:41 am

my attempt at bumpmaped textures makes the textures have black splotches and no bump

zany_001 · Post by **zany_001** » Tue May 15, 2007 6:43 am

i think theres some stuff in the ebook and or manual

Spyrewolf · Post by **Spyrewolf** » Tue May 15, 2007 10:53 pm

exactly....seriously guys there has been a whole bunch of questions asked lately that you can pull straight out of the manual,
it's even listed in the docs's as a sub heading bumpmapping stead of asking every question do some research, then ask if you stuck,
sorry I don't mean to be snippy but the docs really are good and give good explanations

anyway for your question, yes it's possible, but you can't use Dot3 (normal mapping) you can use EMBM [height mapping]
follow the link in the docs to this for usage, but basically its a greyscale image white is high black is low, however don't use pure white, it will leave artifacts through your image, also embm supports specular mapping as well, this is for the shiney bits on you texture, also size is irrelavant. must be sq, however as a rule of thumb try to keep textures 512 or below as video cards will have a hard time sorting this out otherwise.

again all in the docs.

darksmaster923 · Post by **darksmaster923** » Wed May 16, 2007 4:39 am

i have looked at the manual, how do you think i could have started with a bump map in the first place. the main problem is that when i add the texture to the map, most of it becomes black splotches. i have tried generating a bump map and specular map from that texture converter with no avail.

scott · Post by **scott** » Wed May 16, 2007 7:04 am

well maybe asking a bter question like, i have used the docs to get a bump maped texture into RF but i am having problems, these are (enter here) and then mabe someone would be able to point you in the right direction because if you ask simple questions like can you, you will get referd to the RF manual.

darksmaster923 · Post by **darksmaster923** » Wed May 16, 2007 5:02 pm

scott wrote:well maybe asking a bter question like, i have used the docs to get a bump maped texture into RF but i am having problems, these are (enter here) and then mabe someone would be able to point you in the right direction because if you ask simple questions like can you, you will get referd to the RF manual.

fine. i have used the docs to get a bump maped texture into RF but i am having problems, these are black splotches all over my textures.

jonas · Post by **jonas** » Wed May 16, 2007 5:47 pm

Could you post a screen shot?

RF manual wrote:The code looks for "BM0_" as your actors are being loaded. If it sees this string,
it attempts to create a bumpmap texture. Remember, you must have all three
materials for actors in order for bumpmapping to work. The "BMB_XXXX"
material is used as basically a height map, and the "BMS_XXXX" material
actually acts as a light. Without the "BMS_XXXX" material, you effectively have
no light and therefore don't have a bump map effect.

Also I didn't understand you fully, when you say level textures are you talking bsp geometry, or an actor?

scott · Post by **scott** » Wed May 16, 2007 6:34 pm

look dude, im just tryng to help, if you ask how to do the bump map you will get referd to the docs, if you say you got a problem and explain what you did and the problems then we can give you help straight away, its like all those people who never get RF working, we all tell them to post the log, why, so we can help them, if they came along and said cant get it working and posted the log then we could help quicker saving time and getting them on with game creation quicker.
sorry if i seem a bit harsh, but the more detail the easier it is for us to help. for 3 more minutes of your time writing the description of the problem it would save in the hours or days for the reply you get from the community.

Spyrewolf · Post by **Spyrewolf** » Wed May 16, 2007 10:32 pm

fine. i have used the docs to get a bump maped texture into RF but i am having problems, these are black splotches all over my textures.

ok lets not turn this into a thread of not reading the manual, darkmaster said he has, so be it,

don't use pure white,

those black splotches were the artifacts i was refering to,

EMBM, is iffy, darken your gray scale and they should go away, also i'd try not to use pure white in speculars as well, i dunno if that will cause a problem or not,

if your still having prob's post a screen it may be more aparant from there.

darksmaster923 · Post by **darksmaster923** » Thu May 17, 2007 2:46 am

here is the black splotches

Spyrewolf · Post by **Spyrewolf** » Thu May 17, 2007 5:28 am

ah, ok that's the prob,
put a dspotlight or dynamic light facing the bump, this should show up your bumpmap nicely, also do you have a spec map in there, without your textures are not gonna pop to well.

also now im not too sure on this, but the fog may be interfering with you bump as well, from what i can tell thought it's your lack of lights in the level.

darksmaster923 · Post by **darksmaster923** » Thu May 17, 2007 6:32 am

k i added a dynamic light and removed the fog, but it doesnt work.

jonas · Post by **jonas** » Thu May 17, 2007 6:58 am

ok so the problem is either with your bump map or maybe because a specular map isn't present to have the correct lighting. But if your trying to add a bumpmap to level geometry all that's possible is an alpha channel.