Invisiprim - Revision history

Dan Linden at 17:06, 10 March 2025

2025-03-10T17:06:33Z

← Older revision		Revision as of 10:06, 10 March 2025
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	{{KBcaution\|width=100%\|Starting in SL 7.1.12, Invisiprim objects will now hide only water~~. See [[Water_Exclusion_Surface]] for more details~~. The other features of Invisiprims as described on this page are obsolete.}}		{{KBcaution\|width=100%\|Starting in SL 7.1.12, Invisiprim objects will now hide only water. The other features of Invisiprims as described on this page are obsolete. See [[Water_Exclusion_Surface]] for more details.}}

Dan Linden at 17:05, 10 March 2025

2025-03-10T17:05:42Z

← Older revision		Revision as of 10:05, 10 March 2025
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	{{KBcaution\|width=100%\|~~Invisiprims are somewhat obsolete~~. ~~With the advanced lighting model that enables shadows~~, ~~advanced materials, and~~ other ~~high end~~ features ~~in current viewers, invisiprim faces~~ are ~~simply ignored. The effect can still be seen on low graphics settings, with advanced lighting disabled~~.}}		{{KBcaution\|width=100%\|Starting in SL 7.1.12, Invisiprim objects will now hide only water. See [[Water_Exclusion_Surface]] for more details. The other features of Invisiprims as described on this page are obsolete.}}

SakuraNoel Fayray at 10:18, 23 March 2016

2016-03-23T10:18:40Z

← Older revision		Revision as of 03:18, 23 March 2016
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	Below is some simple [[LSL]] code for making an invisiprim. To use, create a new script in your inventory and paste the code below into it. Then drag the script onto a prim to turn it into an invisiprim.		Below is some simple [[LSL]] code for making an invisiprim. To use, create a new script in your inventory and paste the code below into it. Then drag the script onto a prim to turn it into an invisiprim.

	<~~lsl~~>		<source lang="lsl2">
	default		default
	{		{
Line 50:		Line 50:
	}		}
	}		}
	</~~lsl~~>		</source>

	For coders who wish to understand how this works, the same code as above is reproduced below, thoroughly commented to show what the code is doing.		For coders who wish to understand how this works, the same code as above is reproduced below, thoroughly commented to show what the code is doing.

	<~~lsl~~>		<source lang="lsl2">
	default		default
	{		{
Line 90:		Line 90:
	}		}
	}		}
	</~~lsl~~>		</source>

ObviousAltIsObvious Resident: note that this stuff is borked.

2013-11-09T04:01:09Z

note that this stuff is borked.

← Older revision		Revision as of 21:01, 8 November 2013
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	{{Help\|Glossary=\|Object=}}		{{Help\|Glossary=\|Object=}}


			{{KBcaution\|width=100%\|Invisiprims are somewhat obsolete. With the advanced lighting model that enables shadows, advanced materials, and other high end features in current viewers, invisiprim faces are simply ignored. The effect can still be seen on low graphics settings, with advanced lighting disabled.}}


	''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''		''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''

Pedro Oval: /* Example Script */ Add missing } at the end of first script, use a more usual indentation convention

2012-07-20T15:59:41Z

Example Script: Add missing } at the end of first script, use a more usual indentation convention

Chosen Few at 14:17, 2 December 2011

2011-12-02T14:17:30Z

← Older revision		Revision as of 07:17, 2 December 2011
Line 1:		Line 1:
	{{Help\|Glossary=\|Object=}}		{{Help\|Glossary=\|Object=}}
	''Note: The new alpha ~~layer~~ feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''		''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''

	[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]		[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]

Chosen Few: /* Criticism */

2011-12-02T14:15:53Z

Criticism

← Older revision		Revision as of 07:15, 2 December 2011
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	== Criticism ==		== Criticism ==
	As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any parts of the surrounding environment that happen to be seen through it, creating an unwanted "x-ray effect". Mostly due to this effect, the ability to add [[alpha mask\|alpha masks]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha masks have been implemented and are available in Viewer 2.0.		As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any 32-bit textured parts of the surrounding environment that happen to be seen through it, creating an unwanted "x-ray effect". Mostly due to this effect, the ability to add [[alpha mask\|alpha masks]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha masks have been implemented and are available in Viewer 2.0.

	== Example Script ==		== Example Script ==

Chosen Few: /* Criticism */

2011-12-02T14:12:17Z

Criticism

← Older revision		Revision as of 07:12, 2 December 2011
Line 26:		Line 26:

	== Criticism ==		== Criticism ==
	As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any parts of the surrounding environment that happen to be seen through it, creating an unwanted "x-ray effect". Mostly due to this effect, the ability to add [[alpha ~~layer~~\|alpha ~~layers~~]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha ~~layers~~ have been implemented and are available in Viewer 2.0.		As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any parts of the surrounding environment that happen to be seen through it, creating an unwanted "x-ray effect". Mostly due to this effect, the ability to add [[alpha mask\|alpha masks]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha masks have been implemented and are available in Viewer 2.0.

	== Example Script ==		== Example Script ==

Jonathan Yap: Added section: Why invisiprims won't work with deferred rendering

2011-10-25T18:05:35Z

Added section: Why invisiprims won't work with deferred rendering

← Older revision		Revision as of 11:05, 25 October 2011
Line 19:		Line 19:

	Setting the textures of an invisiprim to anything other than opaque will cause the invisitexture to lose its special properties. Instead, the actual texture is revealed. (This is either a grey-to-transparent gradient, or a sort of cloudy white shape on a transparent background, depending which key is used. These textures also appear in the texture preview window.)		Setting the textures of an invisiprim to anything other than opaque will cause the invisitexture to lose its special properties. Instead, the actual texture is revealed. (This is either a grey-to-transparent gradient, or a sort of cloudy white shape on a transparent background, depending which key is used. These textures also appear in the texture preview window.)

			== Why invisiprims won't work with deferred rendering ==
			Invisiprims work by rendering to the depth buffer (but not the color buffer) before avatars but after prims. With deferred rendering, the depth information is used for lighting, so any invisiprim would change the position of prims behind it for lighting (it just looks broken).

			Also, all fullbright objects are rendered after avatars with deferred rendering, so invisiprims would also occlude fullbright objects.

	== Criticism ==		== Criticism ==

Zai Lynch at 19:14, 5 April 2010

2010-04-05T19:14:20Z

← Older revision		Revision as of 12:14, 5 April 2010
Line 1:		Line 1:
	{{Help\|Glossary=\|Object=}}		{{Help\|Glossary=\|Object=}}
	''Note: The new alpha layer feature of Viewer 2.0 has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''		''Note: The new alpha layer feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''

	[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]		[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]
Line 21:		Line 21:

	== Criticism ==		== Criticism ==
	As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any parts of the surrounding environment that happen to be seen through it, creating an unwanted \|x-ray effect". Mostly due to this effect, the ability to add [[alpha layer\|alpha layers]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha layers have been implemented and are available in Viewer 2.0.		As noted above, invisiprims are primarily used on avatars to hide parts of the avatar [[mesh]]. However, due to the nature of its effects the texture not only hides the human bodyparts, but also any parts of the surrounding environment that happen to be seen through it, creating an unwanted "x-ray effect". Mostly due to this effect, the ability to add [[alpha layer\|alpha layers]] to the default avatar was requested in {{Jira\|VWR-812}}, to replace invisiprims on avatars. A design proposal for this feature can be viewed [[User:Brent Linden/VWR-812 Design Proposal\|here]]. As a result, alpha layers have been implemented and are available in Viewer 2.0.

	== Example Script ==		== Example Script ==

← Older revision		Revision as of 21:01, 8 November 2013
Line 1:		Line 1:
	{{Help\|Glossary=\|Object=}}		{{Help\|Glossary=\|Object=}}


			{{KBcaution\|width=100%\|Invisiprims are somewhat obsolete. With the advanced lighting model that enables shadows, advanced materials, and other high end features in current viewers, invisiprim faces are simply ignored. The effect can still be seen on low graphics settings, with advanced lighting disabled.}}


	''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''		''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''

← Older revision		Revision as of 07:17, 2 December 2011
Line 1:		Line 1:
	{{Help\|Glossary=\|Object=}}		{{Help\|Glossary=\|Object=}}
	''Note: The new alpha ~~layer~~ feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''		''Note: The new alpha mask feature of [[Viewer 2 Help\|Viewer 2.0]] has replaced the use of invisiprims to hide parts of the avatar. See [[Invisiprim#Criticism\|Criticism]] below.''

	[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]		[[Image:Avatar_behind_invisiprim.jpg\|thumb\|right\|150px\|Avatar behind an invisiprim]]

← Older revision		Revision as of 08:59, 20 July 2012
Line 32:		Line 32:

	<lsl>		<lsl>
	default {		default
	state_entry() {		{
			state_entry()
			{
	// Make this prim an invisiprim.		// Make this prim an invisiprim.
	llSetPrimitiveParams([PRIM_BUMP_SHINY, ALL_SIDES, PRIM_SHINY_NONE, PRIM_BUMP_NONE,		llSetPrimitiveParams([PRIM_BUMP_SHINY, ALL_SIDES, PRIM_SHINY_NONE, PRIM_BUMP_NONE,
	PRIM_COLOR, ALL_SIDES, <1.0, 1.0, 1.0>, 1.0, PRIM_TEXGEN, ALL_SIDES, PRIM_TEXGEN_DEFAULT,		PRIM_COLOR, ALL_SIDES, <1.0, 1.0, 1.0>, 1.0, PRIM_TEXGEN, ALL_SIDES, PRIM_TEXGEN_DEFAULT,
	PRIM_TEXTURE, ALL_SIDES, "e97cf410-8e61-7005-ec06-629eba4cd1fb", ZERO_VECTOR, ZERO_VECTOR, 0.0]);		PRIM_TEXTURE, ALL_SIDES, "e97cf410-8e61-7005-ec06-629eba4cd1fb", ZERO_VECTOR, ZERO_VECTOR, 0.0]);

	// Delete ourselves from the prim; we are no longer needed.		// Delete ourselves from the prim; we are no longer needed.
	llRemoveInventory(llGetScriptName());		llRemoveInventory(llGetScriptName());
	}		}
			}
	</lsl>		</lsl>

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	<lsl>		<lsl>
	default {		default
	state_entry() {		{
			state_entry()
			{
	// Here we explain the whys and wherefores of making an invisiprim.		// Here we explain the whys and wherefores of making an invisiprim.

	// We use an llSetPrimitiveParams call to set a lot of options at once.		// We use an llSetPrimitiveParams call to set a lot of options at once.
	llSetPrimitiveParams(		llSetPrimitiveParams([

	// Turn off bump mapping and shiny. If either of these options are on,		// Turn off bump mapping and shiny. If either of these options are on,
	// they will have their usual effects, causing the invisiprim to be seen		// they will have their usual effects, causing the invisiprim to be seen
	// even though the special effects of hiding alpha textures continues.		// even though the special effects of hiding alpha textures continues.
	[PRIM_BUMP_SHINY, ALL_SIDES, PRIM_SHINY_NONE, PRIM_BUMP_NONE,		PRIM_BUMP_SHINY, ALL_SIDES, PRIM_SHINY_NONE, PRIM_BUMP_NONE,

	// Set the color and alpha to white and full opacity, respectively.		// Set the color and alpha to white and full opacity, respectively.
	// Color has no effect on the invisiprim, but the prim must be FULLY opaque,		// Color has no effect on the invisiprim, but the prim must be FULLY opaque,
	// or the special effect is lost.		// or the special effect is lost.
	PRIM_COLOR, ALL_SIDES, <1.0, 1.0, 1.0>, 1.0,		PRIM_COLOR, ALL_SIDES, <1.0, 1.0, 1.0>, 1.0,

	// For completeness we set mapping to default, even though it has no effect.		// For completeness we set mapping to default, even though it has no effect.
	PRIM_TEXGEN, ALL_SIDES, PRIM_TEXGEN_DEFAULT,		PRIM_TEXGEN, ALL_SIDES, PRIM_TEXGEN_DEFAULT,

	// Now we set the actual texture, which makes this an invisiprim. We set it on		// Now we set the actual texture, which makes this an invisiprim. We set it on
	// all sides, but there is nothing stopping you setting it only on certain faces.		// all sides, but there is nothing stopping you setting it only on certain faces.
	// We also set repeat, offset and rotation to zero.		// We also set repeat, offset and rotation to zero.
	PRIM_TEXTURE, ALL_SIDES, "e97cf410-8e61-7005-ec06-629eba4cd1fb", ZERO_VECTOR, ZERO_VECTOR, 0.0		PRIM_TEXTURE, ALL_SIDES, "e97cf410-8e61-7005-ec06-629eba4cd1fb", ZERO_VECTOR, ZERO_VECTOR, 0.0

	]);		]);

	// Now remove this script from the prim to save on server resources. The script is only		// Now remove this script from the prim to save on server resources. The script is only