AutoLOD Impostors - Revision history

Lch: /* Contact */

2024-02-11T13:38:09Z

Contact

← Older revision		Revision as of 15:38, 11 February 2024
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	== Contact ==		== Contact ==
	[mailto:~~chaumartinleo~~@~~gmail~~.com ~~chaumartinleo~~@~~gmail~~.com]		[mailto:support@leochaumartin.com support@leochaumartin.com]

	== References ==		== References ==

Lch: /* How to bake several objects at once */

2023-05-15T09:32:32Z

How to bake several objects at once

← Older revision		Revision as of 11:32, 15 May 2023
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	Since version 3.4, there is a new component called "AutoLODImpostorsQueue". Here is how to use it:		Since version 3.4, there is a new component called "AutoLODImpostorsQueue". Here is how to use it:

	* Create an empty GameObject in the scene. A		* Create an empty GameObject in the scene.
	* Add the component "AutoLODImpostorsQueue" from the bottom of the inspector.		* Add the component "AutoLODImpostorsQueue" from the bottom of the inspector.
	* In the script editor, you can fill the array with the objects you want to bake.		* In the script editor, you can fill the array with the objects you want to bake.

Lch at 16:39, 13 May 2023

2023-05-13T16:39:50Z

@@ Line 68: / Line 68: @@
 * Longitude Samples
 * Sphere Type
 == Contact ==

Lch at 11:54, 4 April 2023

2023-04-04T11:54:26Z

← Older revision		Revision as of 13:54, 4 April 2023
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	== What is an impostor ==		== What is an impostor ==
	An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.		An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.
	[[File:~~Screenshot1~~.png\|frame\|The AutoLOD Impostors editor window.]]		[[File:ALI EditorWindow.png\|frame\|The AutoLOD Impostors editor window.]]

	== How to use ==		== How to use ==
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	Click on the <code>Generate Impostor</code> button and wait a few seconds. Unity will temporarily open another scene and enter/quit play mode, just let it do it, don't try to stop the process.		Click on the <code>Generate Impostor</code> button and wait a few seconds. Unity will temporarily open another scene and enter/quit play mode, just let it do it, don't try to stop the process.

	When you get back in the scene, your object should now have a LODGroup attached, and the impostor should be instantiated as its children. Try to zoom out to see the LOD transition between the original object and its impostor.		When you get back in the scene, your object should now have a LODGroup attached / updated, and the impostor should be instantiated as its children. Try to zoom out to see the LOD transition between the original object and its impostor.

	=== Advanced ===		=== Advanced ===
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	* The Brightness slider can increase/decrease the albedo power.		* The Brightness slider can increase/decrease the albedo power.
	* The Smoothness/Metallic/Occlusion sliders work the same way than the default diffuse material.		* The Smoothness/Metallic/Occlusion sliders work the same way than the default diffuse material.
			* The Curvature Occlusion slider applies an additionnal occlusion in rifts, sharp inward angles.
	* The Cutout slider can increase/decrease the sharpness of the alpha clipping geometry.		* The Cutout slider can increase/decrease the sharpness of the alpha clipping geometry.

	* The Smooth toggle turns On/Off impostor bilinear interpolation smoothing.		* The Smooth toggle turns On/Off impostor bilinear interpolation smoothing.

			* The Dithering Fade toggle turns On/Off Dithering fading on the edges of the impostor.

	[[File:Impostor2.gif\|none\|thumb\|429x429px\|From left to right: The original model, smooth enabled, smooth disabled.]]		[[File:Impostor2.gif\|none\|thumb\|429x429px\|From left to right: The original model, smooth enabled, smooth disabled.]]

	* The Yaw/Elevation offset sliders is the way to virtually rotate the object.		* The Yaw/Elevation offset sliders is the way to virtually rotate the object.

			=== Lit / Unlit ===
			By default, impostor shaders are rendered lit. You can change this for a provided unlit shader.

			=== LODGroup Management ===
			If you tick the toggle 'LODGroup Setup' in the editor window, '''the impostor will be part of a LODGroup''' when the baking process ends.

			From there, there are 3 possible scenarios:

			# The target object is not part of a LODGroup : It will be created with the provided settings.
			# The target is already part of a LODGroup in which there is no impostor : the impostor will be added in last position with the provided transition height value.
			# The target is already part of a LODGroup in which there is already an impostor : The impostor will be replaced.

			<blockquote>Tip: if you want to add an additionnal impostor in a LODGroup instead of replacing it, just delete the ImpostorReference component on the LODGroup holder before baking.</blockquote>

			=== Presets ===
			You can save and load presets by pressing the buttons "Load Preset" and "Save Preset" respectively. It will save/override the following settings:

			* Resolution
			* Latitude Samples
			* Latitude Offset
			* Latitude Angular Step
			* Longitude Samples
			* Sphere Type

	== Contact ==		== Contact ==

Lch: /* Post baking improvements */

2022-07-22T08:39:56Z

Post baking improvements

← Older revision		Revision as of 10:39, 22 July 2022
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	[[File:Impostor2.gif\|none\|thumb\|429x429px\|From left to right: The original model, smooth enabled, smooth disabled.]]		[[File:Impostor2.gif\|none\|thumb\|429x429px\|From left to right: The original model, smooth enabled, smooth disabled.]]

	* The ~~Azimut~~/Elevation offset sliders is the way to virtually rotate the object.		* The Yaw/Elevation offset sliders is the way to virtually rotate the object.

	== Contact ==		== Contact ==

Lch at 23:37, 21 July 2022

2022-07-21T23:37:19Z

← Older revision		Revision as of 01:37, 22 July 2022
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	== Setup ==		== Setup ==
	The whole package is contained in the AutoLOD folder resulting from the import. You can move it wherever you want, but it is recommended to keep the same folder structure~~. If you already own [[AutoLOD]], the same folder will be used without any issue~~.		The whole package is contained in the AutoLOD - Impostors folder resulting from the import. You can move it wherever you want, but it is recommended to keep the same folder structure.

	== What is an impostor ==		== What is an impostor ==

Lch at 22:49, 15 June 2022

2022-06-15T22:49:25Z

← Older revision		Revision as of 00:49, 16 June 2022
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	=== Advanced ===		=== Advanced ===
			The provided scene <code>BakingScene-Default</code> is automatically loaded in the Baking Scene object field. Note that you can use your own scene, the only constraints are the presence of an object named "Target" and a main Camera with the script <code>ImpostorTexturesGenerator</code> attached. <blockquote>If you are using URP, you must also fill in the <code>UniversalRenderPipelineAsset</code> and the <code>UniversalRendererData</code> fields at the bottom of the camera impostor. </blockquote>The provided scene is the recommanded one for high-fidelity results, but you can modify the lighting settings or add objects in the scene to achieve some interesting result. It's up to your imagination!
	* The provided scene <code>BakingScene-Default</code> is automatically loaded in the Baking Scene object field. Note that you can use your own scene, the only constraints are the presence of an object named "Target" and a main Camera. The provided scene is the recommanded one for high-fidelity results, but you can modify the lighting settings or add objects in the scene to achieve some interesting result. It's up to your imagination!
	* You can change the generated atlas size with the <code>Texture Size</code> popup. The estimated size below gives an idea of the full impostor (Albedo atlas + Normals atlas + Billboard) size on the disk after DXT1/DXT5 compression.		* You can change the generated atlas size with the <code>Texture Size</code> popup. The estimated size below gives an idea of the full impostor (Albedo atlas + Normals atlas + Billboard) size on the disk after DXT1/DXT5 compression.
	* The atlas is baked following a sphere vertices coordinates. Currently, two types of sphere are available.		* The atlas is baked following a sphere vertices coordinates. Currently, two types of sphere are available.

Lch at 09:20, 15 June 2022

2022-06-15T09:20:32Z

← Older revision		Revision as of 11:20, 15 June 2022
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	* The Azimut/Elevation offset sliders is the way to virtually rotate the object.		* The Azimut/Elevation offset sliders is the way to virtually rotate the object.

			== Contact ==
			[mailto:chaumartinleo@gmail.com chaumartinleo@gmail.com]

			== References ==
			https://www.gamedeveloper.com/programming/dynamic-2d-imposters-a-simple-efficient-directx-9-implementation

			https://calcifer.org/kenneth-christiansen/ComputerScience/imposters.pdf

Lch at 22:05, 14 June 2022

2022-06-14T22:05:48Z

← Older revision		Revision as of 00:05, 15 June 2022
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	== What is an impostor ==		== What is an impostor ==
	An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.		An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.
	[[File:~~Impostor~~.~~gif~~\|~~thumb~~\|~~465x465px\|A Bugatti impostor surrounded by 2 instances of the real model~~]]		[[File:Screenshot1.png\|frame\|The AutoLOD Impostors editor window.]]

	== How to use ==		== How to use ==

Lch at 21:52, 14 June 2022

2022-06-14T21:52:13Z

← Older revision		Revision as of 23:52, 14 June 2022
Line 4:		Line 4:
	== What is an impostor ==		== What is an impostor ==
	An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.		An impostor or imposter is a billboard whose material displays a picture of a 3D object. Depending of the view angle, a different picture of the object will be displayed, to fake a 3D effect. Several pictures from several angles are baked into an atlas texture to access them quickly.
			[[File:Impostor.gif\|thumb\|465x465px\|A Bugatti impostor surrounded by 2 instances of the real model]]
	[[File:Impostor.gif\|~~frameless~~\|~~479x479px~~]]

	== How to use ==		== How to use ==
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	====Post baking improvements====		====Post baking improvements====
	If you select the impostor object in the hierarchy, you will see that the shader has a few parameters to improve the fidelity.		If you select the impostor object in the hierarchy, you will see that the shader has a few parameters to improve the fidelity.

			* The Brightness slider can increase/decrease the albedo power.
			* The Smoothness/Metallic/Occlusion sliders work the same way than the default diffuse material.
			* The Cutout slider can increase/decrease the sharpness of the alpha clipping geometry.

			* The Smooth toggle turns On/Off impostor bilinear interpolation smoothing.

			[[File:Impostor2.gif\|none\|thumb\|429x429px\|From left to right: The original model, smooth enabled, smooth disabled.]]

			* The Azimut/Elevation offset sliders is the way to virtually rotate the object.