Lightmapping levels - Revision history

Iritscen: link fix

2023-12-12T17:40:50Z

link fix

← Older revision		Revision as of 17:40, 12 December 2023
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	==Catch him Konoko==		==Catch him Konoko==
	:This is the "blue" area of the Syndicate Warehouse, the one with the first [[Comguy]] and [[~~Console~~#Alarm consoles\|alarm console]].		:This is the "blue" area of the Syndicate Warehouse, the one with the first [[Comguy]] and [[Data console#Alarm consoles\|alarm console]].

	[[Image:Lightmapped Warehouse.jpg]]		[[Image:Lightmapped Warehouse.jpg]]

Iritscen: localized images

2023-03-05T00:11:06Z

localized images

← Older revision		Revision as of 00:11, 5 March 2023
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	==Lightmaps and Oni==		==Lightmaps and Oni==
	Oni doesn't really support light maps, but we like to pretend that it does. See [~~http~~:~~//geyser.oni2.net/TEMP/tower/lightmap~~.jpg HERE] for why we do and [~~http~~:~~//geyser.oni2.net/TEMP/tower/lightmap2~~.jpg HERE] for why we shouldn't.		Oni doesn't really support light maps, but we like to pretend that it does. See [[:Image:Lightmap particle sorting issue 1.jpg\|HERE]] for why we do and [[:Image:Lightmap particle sorting issue 2.jpg\|HERE]] for why we shouldn't.

	In these screenshots, the light maps are part of the environment. They form a second layer of quads over the normally textured ones, but they have their own texture coordinates, and they have their own unique texture. This shadow texture has a much lower resolution than the regular textures, but that is not a problem because the large pixels are also blurred-out: that's how light maps are usually done anyway. The only problem is... well, there are two problems.		In these screenshots, the light maps are part of the environment. They form a second layer of quads over the normally textured ones, but they have their own texture coordinates, and they have their own unique texture. This shadow texture has a much lower resolution than the regular textures, but that is not a problem because the large pixels are also blurred-out: that's how light maps are usually done anyway. The only problem is... well, there are two problems.
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	:You can also see that my current GFX card (or, rather, lack thereof) is ''not'' OK (there's no anisotropic filtering, and the texture detail decreases very fast with camera distance).		:You can also see that my current GFX card (or, rather, lack thereof) is ''not'' OK (there's no anisotropic filtering, and the texture detail decreases very fast with camera distance).
	:This means that no matter how good the lightmaps are, the screenshot session that I had planned will probably look crappy if done on my current rig. I should've known that. F##k.		:This means that no matter how good the lightmaps are, the screenshot session that I had planned will probably look crappy if done on my current rig. I should've known that. F##k.
	~~http~~:~~//geyser.oni2.net/edition/levels/examples/lightmaps/monitor/~~monitor.jpg
			[[Image:Lightmapped monitor bank.jpg]]
	:Tomorrow (Tuesday) there will be some time for Konoko to upload some screenshots from Monday's errands.		:Tomorrow (Tuesday) there will be some time for Konoko to upload some screenshots from Monday's errands.
	For now, here are the instance files of the above test (level5), for		For now, here are the instance files of the above test (level5), for
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	==Catch him Konoko==		==Catch him Konoko==
	:This is the "blue" area of the Syndicate Warehouse, the one with the first [[Comguy]] and [[Console#Alarm consoles\|alarm console]].		:This is the "blue" area of the Syndicate Warehouse, the one with the first [[Comguy]] and [[Console#Alarm consoles\|alarm console]].
	~~http~~:~~//geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/C1SP3~~.jpg
			[[Image:Lightmapped Warehouse.jpg]]
	:The lightmaps are mostly OK, but "mostly" is not enough, as you can see for yourself: [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3.zip PC], [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3MacIntel.zip Intel Mac], [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3MacPPC.zip PPC Mac]. (WARNING: It requires globalized environment textures, so it will NOT work with the current [[AE]], only with the previous one).		:The lightmaps are mostly OK, but "mostly" is not enough, as you can see for yourself: [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3.zip PC], [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3MacIntel.zip Intel Mac], [http://geyser.oni2.net/edition/levels/examples/lightmaps/C1SP3/level5_C1SP3MacPPC.zip PPC Mac]. (WARNING: It requires globalized environment textures, so it will NOT work with the current [[AE]], only with the previous one).
	:The most remarkable thing is that some quads are either black or very dark. Sometimes they stay out of the way of radiosity iterations, but sometimes it's the texture-baking part that ignores them. The first problem can (apparently) be solved by separating the level into even smaller parts than what you see here (for example, the staircases can be lightmapped separately, to compensate for the large number of smallish quads). The second problem can (apparently) be solved by baking to very large textures (1024x1024, 2048x2048 etc) and then downsampling the result. A third solution would be for the lightmaps to use another background color than black, so that all the abnormally dark quads would get some default brightness (probably normal-looking enough to the casual eye). I rather like that last solution best, because it's quick and dirty, and I'm getting sick enough of lightmapping as it is ^_^		:The most remarkable thing is that some quads are either black or very dark. Sometimes they stay out of the way of radiosity iterations, but sometimes it's the texture-baking part that ignores them. The first problem can (apparently) be solved by separating the level into even smaller parts than what you see here (for example, the staircases can be lightmapped separately, to compensate for the large number of smallish quads). The second problem can (apparently) be solved by baking to very large textures (1024x1024, 2048x2048 etc) and then downsampling the result. A third solution would be for the lightmaps to use another background color than black, so that all the abnormally dark quads would get some default brightness (probably normal-looking enough to the casual eye). I rather like that last solution best, because it's quick and dirty, and I'm getting sick enough of lightmapping as it is ^_^

Iritscen: link fix

2021-02-10T18:39:52Z

link fix

← Older revision		Revision as of 18:39, 10 February 2021
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	The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:		The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:
	#[https://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.		#[https://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.
	#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.		#[https://web.archive.org/web/20080917030026/http://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.
	#Some more scripts for the batch processing of many meshes (<nowiki>https://forum.unity3d.com/viewtopic.php?t=36467</nowiki>, dead link) (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).		#Some more scripts for the batch processing of many meshes (<nowiki>https://forum.unity3d.com/viewtopic.php?t=36467</nowiki>, dead link) (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).
	No tutotial of our own, for now, but if you want to experiment with this, you can.		No tutotial of our own, for now, but if you want to experiment with this, you can.

Iritscen: marking dead link

2021-02-10T18:23:35Z

marking dead link

← Older revision		Revision as of 18:23, 10 February 2021
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	#[https://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.		#[https://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.
	#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.		#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.
	#[https://forum.unity3d.com/viewtopic.php?t=36467 ~~Some more scripts for the batch processing of many meshes]~~ (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).		#Some more scripts for the batch processing of many meshes (<nowiki>https://forum.unity3d.com/viewtopic.php?t=36467</nowiki>, dead link) (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).
	No tutotial of our own, for now, but if you want to experiment with this, you can.		No tutotial of our own, for now, but if you want to experiment with this, you can.

ValBot: changing link from http->https

2021-02-07T02:28:27Z

changing link from http->https

← Older revision		Revision as of 02:28, 7 February 2021
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	The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:		The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:
	#[~~http~~://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.		#[https://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.
	#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.		#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.
	#[https://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).		#[https://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).

ValBot: changing link from http->https

2021-02-07T02:25:25Z

changing link from http->https

← Older revision		Revision as of 02:25, 7 February 2021
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	#[http://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.		#[http://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.
	#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.		#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.
	#[~~http~~://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).		#[https://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).
	No tutotial of our own, for now, but if you want to experiment with this, you can.		No tutotial of our own, for now, but if you want to experiment with this, you can.

ValBot: changing link from http->https

2021-02-07T01:54:58Z

changing link from http->https

← Older revision		Revision as of 01:54, 7 February 2021
Line 20:		Line 20:
	The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:		The tool that does all that is Blender. The task is not exactly "mainstream", so there is not much support for it, but the ingredients are there. Here they are:
	#[http://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.		#[http://vi-wer.de.tl/Lightmap-Tutorial.htm A tutorial for the "Lightmap UV Pack" script]. The good thing about this script is that it can batch-process several meshes at once. The bad thing is that for every mesh, it packs the UVs into a single texture, so for large or detailed meshes meshes either the lightmap will be pixellated, or you need to make the texture's resolution huge.
	#[~~http~~://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.		#[https://blenderartists.org/forum/showthread.php?t=128467 An alternative Multi Lightmapper script], which generates new textures as needed, but can only process one mesh at a time.
	#[http://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).		#[http://forum.unity3d.com/viewtopic.php?t=36467 Some more scripts for the batch processing of many meshes] (e.g. for saving the generated textures to files; neither of the above scripts save the baked lightmaps, and since there can be hundreds of them, automatic saving is badly needed).
	No tutotial of our own, for now, but if you want to experiment with this, you can.		No tutotial of our own, for now, but if you want to experiment with this, you can.

Iritscen: link fix

2020-07-11T16:20:39Z

link fix

← Older revision		Revision as of 16:20, 11 July 2020
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	:Tomorrow (Tuesday) there will be some time for Konoko to upload some screenshots from Monday's errands.		:Tomorrow (Tuesday) there will be some time for Konoko to upload some screenshots from Monday's errands.
	For now, here are the instance files of the above test (level5), for		For now, here are the instance files of the above test (level5), for
	[http://geyser.oni2.net/edition/levels/examples/lightmaps/monitor/~~level5_Monitor~~.zip PC],		[http://geyser.oni2.net/edition/levels/examples/lightmaps/monitor/level5_MonitorPC.zip PC],
	[http://geyser.oni2.net/edition/levels/examples/lightmaps/monitor/level5_MonitorMacIntel.zip Intel Mac]		[http://geyser.oni2.net/edition/levels/examples/lightmaps/monitor/level5_MonitorMacIntel.zip Intel Mac]
	and		and

Geyser: /* Lightmaps and Oni */

2018-02-03T10:26:42Z

Lightmaps and Oni

← Older revision		Revision as of 10:26, 3 February 2018
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	Oni doesn't really support light maps, but we like to pretend that it does. See [http://geyser.oni2.net/TEMP/tower/lightmap.jpg HERE] for why we do and [http://geyser.oni2.net/TEMP/tower/lightmap2.jpg HERE] for why we shouldn't.		Oni doesn't really support light maps, but we like to pretend that it does. See [http://geyser.oni2.net/TEMP/tower/lightmap.jpg HERE] for why we do and [http://geyser.oni2.net/TEMP/tower/lightmap2.jpg HERE] for why we shouldn't.

	In these screenshots, the ~~lightmaps~~ are part of the environment. They form a second layer of quads over the ~~notmally~~ textured ones, but they have their own texture coordinates, and they have their own unique texture. This shadow texture has a much lower resolution than the regular textures, but that is not a problem because of the ~~blur effect~~. The only problem is that ~~right now this~~ texture is transparent, ~~but doesn~~'t have a BSP tree (~~supposed to be~~ used for sorting when rendering particles etc, see [[ABNA]]). Apparently ~~these shadows~~ are always rendered in front of the ~~opaque~~ environment (which is good), but particles are always rendered ''behind'' the shadows (i.e., between the opaque environment and the shadow), and this is quite noticeable, unless the shadows are very subtle.		In these screenshots, the light maps are part of the environment. They form a second layer of quads over the normally textured ones, but they have their own texture coordinates, and they have their own unique texture. This shadow texture has a much lower resolution than the regular textures, but that is not a problem because the large pixels are also blurred-out: that's how light maps are usually done anyway. The only problem is... well, there are two problems.
			#Normally (for a game that supports actual light maps) each quad of the environment would have not one but two sets of UV coordinates: one for the main texture, and the other for the light map data, which would directly darken the color of the main texture. Since Oni only draws regular quads, with one set of UVs each, we need to have those two identical quads (same vertex positions, but different textures and UVs), and the texture on one of the quads needs to be transparent, so we can use the alpha blending. That means that we are using twice as many quads as required by the actual geometry.
			#Since the transparent light map quad does not work as a window, we don't want it to have a BSP tree (which is used for sorting when rendering particles etc, see [[ABNA]]). So these are transparent quads, but of a different kind ([[ABNA]]-less), never encountered in the original Oni. Apparently such quads are always rendered in front of the texture quads, unless hidden by other environment (which is good), but particles are always rendered ''behind'' the shadows (i.e., between the opaque environment and the shadow), and this is quite noticeable, unless the shadows are very subtle.

	At the time of writing (14:54, 4 October 2010 (UTC)), OniSplit can import level geometry from several COLLADA files. For example, there could be one file for geometry and furniture, another file for the ~~lightmaps~~ of all that, another file with ~~invisiwalls~~ and ~~invisiramps~~, another with a pathfinding mesh, etc.		At the time of writing (14:54, 4 October 2010 (UTC)), OniSplit can import level geometry from several COLLADA files. For example, there could be one file for geometry and furniture, another file for the light maps of all that, another file with invisi-walls and invisi-ramps, another with a pathfinding mesh, etc.

	==Our options==		==Our options==

Iritscen: /cat

2013-04-28T17:49:18Z

/cat

← Older revision		Revision as of 17:49, 28 April 2013
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	[[Category:~~Unfinished AE mods]][[Category:All AE mods~~]]		[[Category:Modding tutorials]]