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Unite2015 probelight English version

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SangYun Yi
SangYun Yi

Building on game Environment art for mobile platform using the Light Probes.(Post Mortem of Majestic Tactics for Kakao)

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Unite2015 probelight English version
Building on game Environment art for mobile platform using the Light Probes Yi Sang Yun
CONTENT SLIDE 1. Sample project and speaker introduce 2. What is the light Probes ? 3. How to make light probes 4. Example for using the light Probes, Benefits 5. Attention to using light Probes 6. Conclusion, vision 7. Q & A
Defense Technica Development company : Kuno Interactive Sci-fi style defense game Release : IOS(2013.6), Android(2013.8), Steam(2013.10), XBOXlive, PSN(2014. 4)
Majestic Tactics Yi SangYun Kuno interactive - Lead Artist KGC 2013 Defense Technica Post-moterm for mobile convertion Guarneri Studio - Environmnet / Technical Artist Gametech 2015 Unity3D Environmnet art for mobile platform Facebook Game 3D Environmnet Artist Group manager https://www.facebook.com/groups/3Dbackground Development company : Guarneri Studio Tactical strategies mobile game for Android Not release yet Profile
Light Probes ? Although lightmapping adds greatly to the realism of a scene, it has the disadvantage that non-static objects in the scene are less realistically rendered and can look disconnected as a result. It isn¨t possible to calculate lightmapping for moving objects in real time but it is possible to get a similar effect using light probes. The idea is that the lighting is sampled at strategic points in the scene, denoted by the positions of the probes. The lighting at any position can then be approximated by interpolating between the samples taken by the nearest probes. The interpolation is fast enough to be used during gameplay and helps avoid the disconnection between the lighting of moving objects and static lightmapped objects in the scene.(from unity document) Unity Manual - Light Probes(4.X Pro Only) Unity 4.X use only pro vesion. But unity 5 not limitation
Unity3D 4.x Unity3D 5.x Make a empty componet. And select Light Probe Group, you can see the Light Probe Group Component in the scene window. How to make Light Probes
You can see the white sphere(Probe). Yellow line is cell. It show the influence between light probes (it works 4 probes at least) Unity Manual C Probe Lights Unity3D 4.x ver You can see the check the show probes and Show Cells Unity3D 5.x ver You can see the Scene window.(it baked)
Also check the mesh option in inspector. Use light probes. Unity 5 add Reflection probes option.
Defense technica mobile stage 31
Use Light Probes On Use Light Probes Off Unity5 always see the Cell. If you click using light probes.(Uncomfortable´.)
Lighting prefab for Lightmapping Lighting prefab for bake the Light probes. Separate prefabs for prefabs because result com out brighter than the scene bake setting Prefab for light probes Managing Lighting Prefab about Light probes(Unity 4.X)
Unity 5 removed bake Probes menu. So, other solution consideration.(multiply shader Tintcolor or etc´)
Reasons and benefits of using Light Probe in Project How can avoid the fixed and quiet lighting by Unlit shader. - It goes well 50 vs 50 massive battle game design Less work.(makes the light probes in scenes and bake one more) - scene use variable concept change the light setting. - only one person works in environment concept and modeling, TA, effect Low mobile device can use it(iphone 4S C defense technica)
Majestic Tactics Battlemap 03 Majestic Tactics Battlemap 04 Day and night Scene Example - it use same props
Majestic Tactics Battlemap 03 Majestic Tactics Battlemap 04 Comparison of the brightness change unit according to the day and night setting probe
Majestic tactics for Android Draw call and batching call amount over the 1,000 calls Skinned mesh draw in 55 vs 55 If horseman draw in 110 VS 110. (too many skinned meshes)
Target Device analasys Samsung Galaxy S3 4.8￣1280x720(HD) exinos 4412 Quad-core 1.4G, MP4 440MHz 2G RAM Android IOS Apple iphone 5 4￣ 1136x640 A6(Dual Core C 1.3G + PowerVR SGX543 3 Gpu cluster) 1G RAM
The reason battle 50 vs 50 can in mobile device. Send to device Conclusion draw Unit caculate Send to server Calculate in Server Game Art Character Environment Effect UI Game Logict Mobile device architecture attached to CPU and GPU.
Variable shader test Lighting design consider Lambert and Wrapdiffuse. Character shaders
Character shaders DeckEdit scene
Left : Probe light / Lambert Right : Probe light + Rim light / Wrapdiffuse
Unlit shader not using light probes.(Albedo return only 1 value) If surface shader compiler include noambient does not draw.
Light Probes demerits and causion Similar dynamic lighting - it is not show the lighting direction - Just reflection of lighting tone and color. Use only mood and tone. Influenced by mesh normal. - Mesh normal face look the down direction, influenced by ambient color. - Does not look good when the light saturation low.
It should be the located where the change of light is made.
X, Y, Z mainly problems arising from the object to move in three-dimensional axis Frame rate is no reason for a sudden fall or the unit is dark or blinking symptoms appear. probe problems occur can not be properly placed in the unit path. If you check the unit by turning the cells seem to be engaged only one line long. Frame rate drop
Normal and Tangents face is set to 1 smoothing group and the Normal and Tangent value to Calculate
Bake Even after being affected by the ambient color value. The need to adjust the ambient color for the scene later Light probe bake. Ambient color
Unity5 does not influenced ambient color after bake the probes
If mesh use light Probe, does not apply dynamic batching. In order to reduce skinned meshes are drwan in the scene. Hero horse unit Skinned mesh Drawcall : 1 It use light probe. max 5unit appear Solder horse unit Use Mesh animation Drawcall : 12 but it use dynamic batching method, It appeared maximum 50 unit. It does not light probes
Facebook Unity development community screen shot who upload SangWon Lee. Unity 5 Light Probes Diffuse shader Unity 5 standard shader
Gamma color space brighter than necessary. But mobile platform does not support linear color space.
Albedo multiply the color intensity values.
This issue has been resolved after Unity 5.1 version. This problem occurred by enlighten algorithm.
Low performance device can use light probe. - Target device : Samsung Galaxy S2(Android), iphone 4(IOS) - Target device : Samsung Galaxy S3(Android)), iphone 5(IOS) It is a necessary to technical guide for 3D artist. Texture is not too bright depiction. Variable shader can use it. Conclusion
And one more thing´ Sprite lamp Sprite lamp : 2D Dynamic lighting sprite texture can makes a normal map(similar to UE4 imposter) Legend of dungeon
Sample Video https://www.youtube.com/watch?v=ZICgQQLRNT0
?? 3D ?? ????(Game 3D Environment Artist) http://www.facebook.com/group/3Dbackground
Yi Sang Yun illustor @ Gmail.com +82 10 9313 0583 Q&A K
Unite2015 probelight English version

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Unite2015 probelight English version

  • 2. Building on game Environment art for mobile platform using the Light Probes Yi Sang Yun
  • 3. CONTENT SLIDE 1. Sample project and speaker introduce 2. What is the light Probes ? 3. How to make light probes 4. Example for using the light Probes, Benefits 5. Attention to using light Probes 6. Conclusion, vision 7. Q & A
  • 4. Defense Technica Development company : Kuno Interactive Sci-fi style defense game Release : IOS(2013.6), Android(2013.8), Steam(2013.10), XBOXlive, PSN(2014. 4)
  • 5. Majestic Tactics Yi SangYun Kuno interactive - Lead Artist KGC 2013 Defense Technica Post-moterm for mobile convertion Guarneri Studio - Environmnet / Technical Artist Gametech 2015 Unity3D Environmnet art for mobile platform Facebook Game 3D Environmnet Artist Group manager https://www.facebook.com/groups/3Dbackground Development company : Guarneri Studio Tactical strategies mobile game for Android Not release yet Profile
  • 6. Light Probes ? Although lightmapping adds greatly to the realism of a scene, it has the disadvantage that non-static objects in the scene are less realistically rendered and can look disconnected as a result. It isn¨t possible to calculate lightmapping for moving objects in real time but it is possible to get a similar effect using light probes. The idea is that the lighting is sampled at strategic points in the scene, denoted by the positions of the probes. The lighting at any position can then be approximated by interpolating between the samples taken by the nearest probes. The interpolation is fast enough to be used during gameplay and helps avoid the disconnection between the lighting of moving objects and static lightmapped objects in the scene.(from unity document) Unity Manual - Light Probes(4.X Pro Only) Unity 4.X use only pro vesion. But unity 5 not limitation
  • 7. Unity3D 4.x Unity3D 5.x Make a empty componet. And select Light Probe Group, you can see the Light Probe Group Component in the scene window. How to make Light Probes
  • 8. You can see the white sphere(Probe). Yellow line is cell. It show the influence between light probes (it works 4 probes at least) Unity Manual C Probe Lights Unity3D 4.x ver You can see the check the show probes and Show Cells Unity3D 5.x ver You can see the Scene window.(it baked)
  • 9. Also check the mesh option in inspector. Use light probes. Unity 5 add Reflection probes option.
  • 11. Use Light Probes On Use Light Probes Off Unity5 always see the Cell. If you click using light probes.(Uncomfortable´.)
  • 12. Lighting prefab for Lightmapping Lighting prefab for bake the Light probes. Separate prefabs for prefabs because result com out brighter than the scene bake setting Prefab for light probes Managing Lighting Prefab about Light probes(Unity 4.X)
  • 13. Unity 5 removed bake Probes menu. So, other solution consideration.(multiply shader Tintcolor or etc´)
  • 14. Reasons and benefits of using Light Probe in Project How can avoid the fixed and quiet lighting by Unlit shader. - It goes well 50 vs 50 massive battle game design Less work.(makes the light probes in scenes and bake one more) - scene use variable concept change the light setting. - only one person works in environment concept and modeling, TA, effect Low mobile device can use it(iphone 4S C defense technica)
  • 15. Majestic Tactics Battlemap 03 Majestic Tactics Battlemap 04 Day and night Scene Example - it use same props
  • 16. Majestic Tactics Battlemap 03 Majestic Tactics Battlemap 04 Comparison of the brightness change unit according to the day and night setting probe
  • 17. Majestic tactics for Android Draw call and batching call amount over the 1,000 calls Skinned mesh draw in 55 vs 55 If horseman draw in 110 VS 110. (too many skinned meshes)
  • 18. Target Device analasys Samsung Galaxy S3 4.8￣1280x720(HD) exinos 4412 Quad-core 1.4G, MP4 440MHz 2G RAM Android IOS Apple iphone 5 4￣ 1136x640 A6(Dual Core C 1.3G + PowerVR SGX543 3 Gpu cluster) 1G RAM
  • 19. The reason battle 50 vs 50 can in mobile device. Send to device Conclusion draw Unit caculate Send to server Calculate in Server Game Art Character Environment Effect UI Game Logict Mobile device architecture attached to CPU and GPU.
  • 20. Variable shader test Lighting design consider Lambert and Wrapdiffuse. Character shaders
  • 22. Left : Probe light / Lambert Right : Probe light + Rim light / Wrapdiffuse
  • 23. Unlit shader not using light probes.(Albedo return only 1 value) If surface shader compiler include noambient does not draw.
  • 24. Light Probes demerits and causion Similar dynamic lighting - it is not show the lighting direction - Just reflection of lighting tone and color. Use only mood and tone. Influenced by mesh normal. - Mesh normal face look the down direction, influenced by ambient color. - Does not look good when the light saturation low.
  • 25. It should be the located where the change of light is made.
  • 26. X, Y, Z mainly problems arising from the object to move in three-dimensional axis Frame rate is no reason for a sudden fall or the unit is dark or blinking symptoms appear. probe problems occur can not be properly placed in the unit path. If you check the unit by turning the cells seem to be engaged only one line long. Frame rate drop
  • 27. Normal and Tangents face is set to 1 smoothing group and the Normal and Tangent value to Calculate
  • 28. Bake Even after being affected by the ambient color value. The need to adjust the ambient color for the scene later Light probe bake. Ambient color
  • 29. Unity5 does not influenced ambient color after bake the probes
  • 30. If mesh use light Probe, does not apply dynamic batching. In order to reduce skinned meshes are drwan in the scene. Hero horse unit Skinned mesh Drawcall : 1 It use light probe. max 5unit appear Solder horse unit Use Mesh animation Drawcall : 12 but it use dynamic batching method, It appeared maximum 50 unit. It does not light probes
  • 31. Facebook Unity development community screen shot who upload SangWon Lee. Unity 5 Light Probes Diffuse shader Unity 5 standard shader
  • 32. Gamma color space brighter than necessary. But mobile platform does not support linear color space.
  • 33. Albedo multiply the color intensity values.
  • 34. This issue has been resolved after Unity 5.1 version. This problem occurred by enlighten algorithm.
  • 35. Low performance device can use light probe. - Target device : Samsung Galaxy S2(Android), iphone 4(IOS) - Target device : Samsung Galaxy S3(Android)), iphone 5(IOS) It is a necessary to technical guide for 3D artist. Texture is not too bright depiction. Variable shader can use it. Conclusion
  • 36. And one more thing´ Sprite lamp Sprite lamp : 2D Dynamic lighting sprite texture can makes a normal map(similar to UE4 imposter) Legend of dungeon
  • 38. ?? 3D ?? ????(Game 3D Environment Artist) http://www.facebook.com/group/3Dbackground
  • 39. Yi Sang Yun illustor @ Gmail.com +82 10 9313 0583 Q&A K