Dynamic ambient light - Revision history

Datiswous: /* Downside */ we do have the source now

2023-06-09T09:24:40Z

Downside: we do have the source now

← Older revision		Revision as of 09:24, 9 June 2023
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	=== Downside ===		=== Downside ===

	While having only one global ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think~~, especially since we do not have the source to Doom3 yet~~.		While having only one global ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think.

	One common practice is to build intermediate areas, for instance an L-shaped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.		One common practice is to build intermediate areas, for instance an L-shaped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.


	== Dynamic Ambient Light Spawnargs ==		== Dynamic Ambient Light Spawnargs ==

Thebigh: typos

2023-05-19T05:03:26Z

typos

← Older revision		Revision as of 05:03, 19 May 2023
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	Having one global ambient light is good for performance, but depending on your map the player might see various locations which all should have their own lighting setup. For instance, a slightliy bluish moonlit outside, a greenly lit cellar, or a dark-red underground cave with lava pits.		Having one global ambient light is good for performance, but depending on your map the player might see various locations which all should have their own lighting setup. For instance, a slightliy bluish moonlit outside, a greenly lit cellar, or a dark-red underground cave with lava pits.

	To ~~achive~~ different looking ambients without having multiple ambient lights, there exists a [[Location Settings\|zoning]] system. For each zone, you can set:		To achieve different looking ambients without having multiple ambient lights, there exists a [[Location Settings\|zoning]] system. For each zone, you can set:

	* a different base ambient color,		* a different base ambient color,
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	While having only one global ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think, especially since we do not have the source to Doom3 yet.		While having only one global ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think, especially since we do not have the source to Doom3 yet.

	One common practice is to build ~~intermidiate~~ areas, for instance an L-~~shapped~~ corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.		One common practice is to build intermediate areas, for instance an L-shaped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.

Grayman: /* ambient_light_falloff */

2013-03-11T16:05:27Z

ambient_light_falloff

← Older revision		Revision as of 16:05, 11 March 2013
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	Default: 0 ('''Best looking is 1, and it has exactly the same performance as 0! So you really should use a value of 1.''')		Default: 0 ('''Best looking is 1, and it has exactly the same performance as 0! So you really should use a value of 1.''')

	Here is an overview ~~over~~ how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:		Here is an overview of how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:

	[[Image:Ambient light dynamics.png\|700px\|left]]		[[Image:Ambient light dynamics.png\|700px\|left]]

Grayman: /* ambient_light_falloff */

2013-03-11T16:04:49Z

ambient_light_falloff

← Older revision		Revision as of 16:04, 11 March 2013
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	=== ambient_light_falloff ===		=== ambient_light_falloff ===

	Default: 0 ('''Best looking is 1, and it has exactly the same performance ~~than~~ 0! So you really should use a value of 1.''')		Default: 0 ('''Best looking is 1, and it has exactly the same performance as 0! So you really should use a value of 1.''')

	Here is an overview over how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:		Here is an overview over how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:
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	{{clear }}		{{clear }}


	== See also ==		== See also ==

Tels: typo

2012-09-04T21:53:01Z

typo

← Older revision		Revision as of 21:53, 4 September 2012
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	=== Downside ===		=== Downside ===

	While having only one ~~gloabl~~ ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think, especially since we do not have the source to Doom3 yet.		While having only one global ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think, especially since we do not have the source to Doom3 yet.

	One common practice is to build intermidiate areas, for instance an L-shapped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.		One common practice is to build intermidiate areas, for instance an L-shapped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.

Tels: comments

2011-11-03T13:04:38Z

comments

← Older revision		Revision as of 13:04, 3 November 2011
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	=== ambient_dynamic_light ===		=== ambient_dynamic_light ===

	A factor with which each light in the current zone is multiplied before being added to the '''ambient_light'''. Default is "0.01 0.01 0.01". Use for instance "0.04 0.01 0.01" for a reddish tinted ambient light.		A factor with which each light in the current zone is multiplied before being added to the '''ambient_light'''. Default is "0.01 0.01 0.01". Use for instance "0.04 0.01 0.01" for a reddish tinted ambient light. If you want to turn this feature off (but you really shouldn't, instead set '''ambient_light_falloff = 2''' and use a sensible default), then use "0 0 0" as spawnarg.

	=== ambient_dynamic_light_cap ===		=== ambient_dynamic_light_cap ===
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	=== ambient_light_falloff ===		=== ambient_light_falloff ===

	Default: 0 (Best looking is 1, and it has exactly the same performance than 0!)		Default: 0 ('''Best looking is 1, and it has exactly the same performance than 0! So you really should use a value of 1.''')

	Here is an overview over how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:		Here is an overview over how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:

Nbohr1more: /* See also */

2011-04-13T20:57:25Z

Nbohr1more: /* See also */

2011-04-13T20:35:40Z

Tels: add some note about main lights

2010-12-13T06:18:57Z

add some note about main lights

← Older revision		Revision as of 06:18, 13 December 2010
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	=== Introduction ===		=== Introduction ===

	The '''ambient light''' is used to provide a base color to all visible surfaces, hereby avoiding the '''pitch black''' shadows that appear on surfaces hit by no light at all.		The '''ambient light''' is used to provide a base color to all visible surfaces, hereby avoiding the '''pitch black''' shadows that appear on surfaces hit by no light at all. It should ''''complement''' the main lighting, but not be the only light of a room except in some rare cases.

	:'''In TDM, this is achieved with exactly one global light entity named ambient_world.'''		:'''In TDM, this is achieved with exactly one global light entity named ambient_world.'''

Tels: add stuff

2010-12-13T06:18:04Z

add stuff

← Older revision		Revision as of 06:18, 13 December 2010
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	~~Coming soon~~.		=== Introduction ===

			The '''ambient light''' is used to provide a base color to all visible surfaces, hereby avoiding the '''pitch black''' shadows that appear on surfaces hit by no light at all.

			:'''In TDM, this is achieved with exactly one global light entity named ambient_world.'''

			Having one global ambient light is good for performance, but depending on your map the player might see various locations which all should have their own lighting setup. For instance, a slightliy bluish moonlit outside, a greenly lit cellar, or a dark-red underground cave with lava pits.

			To achive different looking ambients without having multiple ambient lights, there exists a [[Location Settings\|zoning]] system. For each zone, you can set:

			* a different base ambient color,
			* a time the code waits, and a time it takes to fade to this color (to avoid abrupt color changes)
			* as well a dynamic part, which gets added to the base ambient.


			=== Downside ===

			While having only one gloabl ambient light is good for performance, there is a downside: the entire visible world is colored according to the place the player is in. That means if you look from a reddish lava cave to the outside, you can also see the outside reddish tinted. This is also the case in many other games, and harder to fix than you think, especially since we do not have the source to Doom3 yet.

			One common practice is to build intermidiate areas, for instance an L-shapped corridor. In this zone a neutral grey ambient is used, and so the player notices the transition less.


			== Dynamic Ambient Light Spawnargs ==

			The dynamic part of the ambient light is calculated in real-time from the lights in the current zone, and optionally their distance to the player. It is then multiplied with a per-zone factor: so in a small white room the ambient has a higher influence, and is basically whitish, while in a red underground cave it has much less influence and is reddish.

			=== ambient_light ===

			The base color of the ambient light for this zone. Example: "0.06 0.03 0.03" Avoid values greater than 0.10 unless you plan on making a daylight mission.

			=== ambient_dynamic_light ===

			A factor with which each light in the current zone is multiplied before being added to the '''ambient_light'''. Default is "0.01 0.01 0.01". Use for instance "0.04 0.01 0.01" for a reddish tinted ambient light.

			=== ambient_dynamic_light_cap ===

			The absolute limit for the dynamic part of the ambient light. Used to stop the ambient dynamic part overbrightening the ambient for this zone. Default is "0.1 0.1 0.1".

			=== ambient_light_falloff ===

			Default: 0 (Best looking is 1, and it has exactly the same performance than 0!)

			Here is an overview over how the dynamic ambient light inside a zone works. To make it more clear, only a 2D cut is shown through the room, albeit the feature works in 3D:

			[[Image:Ambient light dynamics.png\|700px\|left]]

			{{clear }}


	== See also ==		== See also ==

← Older revision		Revision as of 20:57, 13 April 2011
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	[[Category:Ambient Light]]		[[Category:Ambient Light]]
			[[Category:Lighting]]

← Older revision		Revision as of 20:35, 13 April 2011
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	{{editing}}		{{editing}}

			[[Category:Ambient Light]]