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Bump mapping is a technique used to add relief to an object’s surface, without increasing the geometric complexity of the object. Bump mapping makes the surface of a smooth polygon appear irregular, or “bumpy.” Bump mapping can be used in games, visualization and simulation applications to represent relief all kinds of irregularities on floors, walls, water surfaces, and all kinds of objects. For example, an orange can be modeled by a smooth sphere with a bump map. The bump map is used to model all the small the creases in the orange’s skin, without increasing the geometric complexity of the model. Similarly, the surface of a lake can be modeled by a flat polygon and a dynamic bump map. In this case, the bump map is used to model the waves. Bump mapping is expected to have the same impact throughout the gaming world as the transition from pixelated point-filtered textures to smooth bilinear-filtered textures. Until very recently, the performance cost of bump mapping techniques was prohibitively expensive for games running on consumer-level hardware. Permedia3 makes bump mapping free in terms of performance (relative to simple bilinear mipmapped texturing) in Direct3D 6 games. This paper presents the basic idea behind bump mapping, Direct3D 6 and OpenGL bump mapping techniques, and Permedia3’s bump mapping capabilities. Principle Bump mapping consists of using variations in light intensity to simulate variations in height (“bumps”) at the surface of a smooth object. Basically, a brightly-lit point at the surface of the object will appear higher than a dimly-lit point. “True” bump mapping requires that lighting computations be performed individually for each pixel—a technique known as Phong shading. When that is the case, the way a point is lit is determined by the direction of the light source and by the surface normal at this point. Roughly speaking, the surface normal at a particular point is a vector perpendicular to the surface at this point. When lighting computations are performed on a per-pixel basis, bumps at the surface of a smooth object can be produced by adding small perturbations to the object’s surface normal. True per pixel lighting, or Phong shading, involves computing the true vertex normal and the true direction of the light for each point, and is not available in current implementations of Direct3D or OpenGL. Current Direct3D and OpenGL shaders perform “per vertex” lighting. In this model, lighting computations are performed for each vertex of each polygon. The results of these computations are then interpolated along the edges and across the face of each polygon. Because the current implementations of Direct3D and OpenGL do not support per-pixel lighting, Direct3D and OpenGL cannot be used to perform “true” bump mapping.
Source: http://www.3dlabs.com/product/techno...hite_Paper.pdfComment
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Just because I didn't play this one, doesn't mean I don't want to see the results!
(Bump)Comment
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errrr.... i mean :bump:Comment
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when is this going to be ready?To us, it is the BEAST.Comment
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OK, I'm starting tabulation now, and I won't stop until I'm done.
So I don't know when it will be ready exactly, but from experience this takes about 3 hours."You're the biggest user of hindsight that I've ever known. Your favorite team, in any sport, is the one that just won. If you were a woman, you'd likely be a slut." - Slowwhand, to Imran
Eschewing silly games since December 4, 2005Comment
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22/38 tabulated."You're the biggest user of hindsight that I've ever known. Your favorite team, in any sport, is the one that just won. If you were a woman, you'd likely be a slut." - Slowwhand, to Imran
Eschewing silly games since December 4, 2005Comment
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great work JW! you're almost there!Comment
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Go go go!!!
I'm building a wagon! On some other part of the internets, obviously (but not that other site).Comment
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its been nearly an hour since your last post???
final tally??
come on i need to know how low of a score i really got!Comment
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29/38 tabulated.
You realize I have to eat.
"You're the biggest user of hindsight that I've ever known. Your favorite team, in any sport, is the one that just won. If you were a woman, you'd likely be a slut." - Slowwhand, to Imran
Eschewing silly games since December 4, 2005Comment
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food is for the weak! 9 to go!
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Originally posted by Jaguar Warrior
29/38 tabulated.
You realize I have to eat.
hi ,
and , have you done eating and calculating now , ........
have a nice day- RES NON VERBA - DE OPRESSO LIBER - VERITAS ET LIBERTAS - O TOLMON NIKA - SINE PARI - VIGLIA PRETIUM LIBERTAS - SI VIS PACEM , PARA BELLUM -
- LEGIO PATRIA NOSTRA - one shot , one kill - freedom exists only in a book - everything you always wanted to know about special forces - everything you always wanted to know about Israel - what Dabur does in his free time , ... - in french - “Become an anti-Semitic teacher for 5 Euro only.”
WHY DOES ISRAEL NEED A SECURITY FENCE --- join in an exceptional demo game > join here forum is now open ! - the new civ Conquest screenshots > go see them UPDATED 07.11.2003 ISRAEL > crisis or challenge ?Comment
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It's been there for a while.
A nice day to you, too, panag.
"You're the biggest user of hindsight that I've ever known. Your favorite team, in any sport, is the one that just won. If you were a woman, you'd likely be a slut." - Slowwhand, to Imran
Eschewing silly games since December 4, 2005Comment
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Originally posted by Jaguar Warrior
It's been there for a while.
A nice day to you, too, panag.
hi ,
seen it before , you just forgot to put the link in this thread , .....
thanks
have a great day
- RES NON VERBA - DE OPRESSO LIBER - VERITAS ET LIBERTAS - O TOLMON NIKA - SINE PARI - VIGLIA PRETIUM LIBERTAS - SI VIS PACEM , PARA BELLUM -
- LEGIO PATRIA NOSTRA - one shot , one kill - freedom exists only in a book - everything you always wanted to know about special forces - everything you always wanted to know about Israel - what Dabur does in his free time , ... - in french - “Become an anti-Semitic teacher for 5 Euro only.”
WHY DOES ISRAEL NEED A SECURITY FENCE --- join in an exceptional demo game > join here forum is now open ! - the new civ Conquest screenshots > go see them UPDATED 07.11.2003 ISRAEL > crisis or challenge ?Comment
- The Altera Centauri collection has been brought up to date by Darsnan. It comprises every decent scenario he's been able to find anywhere on the web, going back over 20 years.
https://apolyton.net/forum/other-gam...rio-repository -Check it out, and enjoy some excellent Alpha Centauri/Alien Crossfire action. - 25 themes/skins/styles are now available to members. Check the select drop-down at the bottom-left of each page.
- Call To Power 2 Cradle 3+ mod in progress: https://apolyton.net/forum/other-games/call-to-power-2/ctp2-creation/9437883-making-cradle-3-fully-compatible-with-the-apolyton-edition
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