Turning Shadows Off - Revision history

Nbohr1more at 20:47, 13 April 2011

2011-04-13T20:47:49Z

← Older revision		Revision as of 20:47, 13 April 2011
Line 50:		Line 50:

	{{tutorial-textures}}		{{tutorial-textures}}
			[[Category:Lighting]]

Greebo: Reverted edits by KathyRobinson (Talk) to last version by Springheel

2010-01-17T18:59:04Z

Reverted edits by KathyRobinson (Talk) to last version by Springheel

← Older revision		Revision as of 18:59, 17 January 2010
Line 6:		Line 6:

	== Self Shadows==		== Self Shadows==
	Self shadows are shadows that a model casts upon itself. For ~~[http://www.research-service.com/custom-essay-writing.html custom essays]~~ example, If a light is above a table, the top of the table will cast a shadow down onto the legs.		Self shadows are shadows that a model casts upon itself. For example, If a light is above a table, the top of the table will cast a shadow down onto the legs.

	Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm		Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm

KathyRobinson: /* Self Shadows */

2010-01-13T21:37:34Z

Self Shadows

← Older revision		Revision as of 21:37, 13 January 2010
Line 6:		Line 6:

	== Self Shadows==		== Self Shadows==
	Self shadows are shadows that a model casts upon itself. For example, If a light is above a table, the top of the table will cast a shadow down onto the legs.		Self shadows are shadows that a model casts upon itself. For [http://www.research-service.com/custom-essay-writing.html custom essays] example, If a light is above a table, the top of the table will cast a shadow down onto the legs.

	Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm		Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm

Springheel at 20:40, 10 February 2009

2009-02-10T20:40:30Z

← Older revision		Revision as of 20:40, 10 February 2009
Line 1:		Line 1:
	''written by Springheel''		''written by Springheel''

	There are two basic kinds of shadows when dealing with models--"shadows" and "self-shadows".		You can turn the shadows on a model or entity off in the editor by adding the spawnarg "noshadows" "1". This article deals with shadows in material shaders.

			There are two basic kinds of shadows when dealing with models and material shaders--"shadows" and "self-shadows".

	== Self Shadows==		== Self Shadows==

Springheel: /* Shadowmesh */

2008-04-30T15:43:44Z

Shadowmesh

← Older revision		Revision as of 15:43, 30 April 2008
Line 34:		Line 34:

	outside of pov: 60 FPS		outside of pov: 60 FPS

	inside pov: 20 FPS		inside pov: 20 FPS

Line 39:		Line 40:

	outside of pov: 60 FPS		outside of pov: 60 FPS

	inside pov: 30 FPS		inside pov: 30 FPS

Springheel: /* Shadowmesh */

2008-04-30T15:41:22Z

Shadowmesh

@@ Line 31: / Line 31: @@
 A shadowmesh is a simplified version of a model that is textured with "textures/common/shadow".  This makes it invisible to the player, but it casts a shadow.  Shadowmeshes have to be built with modelling software, but are very useful for complex models.  The mesh of the actual object is set to "noshadows", and the shadowmesh casts a simplified shadow instead, using less processing power.
-In general, objects that are more than 500 polys could benefit from a shadowmesh (often a shadowmesh can be made with 25% of the polys used for the actual mesh, though this depends on the object).  Be aware that a shadowmesh will cast shadows onto the visible part of the object, so in general the shadowmesh should be slightly smaller than the visible mesh.
+A simple test, using 40 high poly objects with "noselfshadow" on, being hit by three different lights:
 {{tutorial-textures}}

Springheel at 15:34, 30 April 2008

2008-04-30T15:34:22Z

← Older revision		Revision as of 15:34, 30 April 2008
Line 26:		Line 26:

	In cases like this, it might look better if there were no shadow at all, rather than an awkward blocky one. Adding "noshadows" to the material entry would be appropriate in these cases.		In cases like this, it might look better if there were no shadow at all, rather than an awkward blocky one. Adding "noshadows" to the material entry would be appropriate in these cases.

			== Shadowmesh ==

			A shadowmesh is a simplified version of a model that is textured with "textures/common/shadow". This makes it invisible to the player, but it casts a shadow. Shadowmeshes have to be built with modelling software, but are very useful for complex models. The mesh of the actual object is set to "noshadows", and the shadowmesh casts a simplified shadow instead, using less processing power.

			In general, objects that are more than 500 polys could benefit from a shadowmesh (often a shadowmesh can be made with 25% of the polys used for the actual mesh, though this depends on the object). Be aware that a shadowmesh will cast shadows onto the visible part of the object, so in general the shadowmesh should be slightly smaller than the visible mesh.

	{{tutorial-textures}}		{{tutorial-textures}}

Tels: make image local, use template for category

2007-11-17T18:13:44Z

make image local, use template for category

← Older revision		Revision as of 18:13, 17 November 2007
Line 23:		Line 23:
	D3 does not calculate transparencies when rendering shadows. If you have a rectangular model with the image of a feather on a transparent background, the engine will make a rectangular shadow (see the feather's shadow on the wall is actually a rectangle)		D3 does not calculate transparencies when rendering shadows. If you have a rectangular model with the image of a feather on a transparent background, the engine will make a rectangular shadow (see the feather's shadow on the wall is actually a rectangle)

	~~http~~:~~//www.mindplaces.com/save/quill~~.jpg		[[Image:Quill.jpg]]

	In cases like this, it might look better if there were no shadow at all, rather than an awkward blocky one. Adding "noshadows" to the material entry would be appropriate in these cases.		In cases like this, it might look better if there were no shadow at all, rather than an awkward blocky one. Adding "noshadows" to the material entry would be appropriate in these cases.

	~~[[Category:Textures]]~~		{{tutorial-textures}}
	~~[[Category:Editing]]~~

Greebo: /* Self Shadows */

2007-11-04T17:24:36Z

Self Shadows

← Older revision		Revision as of 17:24, 4 November 2007
Line 8:		Line 8:
	Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm		Normally, self shadows are good. On some models, however, especially rounded ones like vases or AI, the shadows create ugly jagged triangles of black. For a good explanation of why this happens, see here: http://www.geocities.com/vi_pr/self_shadowing_problem/self_shadowing_problem.htm

	In these cases, you should add '''"noselfshadows"''' to the material entry for the object's texture.		In these cases, you should add '''"[[noselfshadows]]"''' to the material entry for the object's texture.

	Adding this means that the object will no longer cast shadows on itself. It also won't cast shadows on OTHER objects with "noselfshadow" on, so use it only when necessary. If you make a table "noselfshadow" and put a vase with "noselfshadow" on top, then the vase will not cast a shadow on the table, which would look odd.		Adding this means that the object will no longer cast shadows on itself. It also won't cast shadows on OTHER objects with "noselfshadow" on, so use it only when necessary. If you make a table "noselfshadow" and put a vase with "noselfshadow" on top, then the vase will not cast a shadow on the table, which would look odd.

Springheel at 17:28, 25 June 2007

2007-06-25T17:28:18Z

← Older revision		Revision as of 17:28, 25 June 2007
Line 28:		Line 28:

	[[Category:Textures]]		[[Category:Textures]]
			[[Category:Editing]]