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Spriteilluminator create only shadow update#
Update : It’s not necessary to batch the overlapping sprites into separate FRenderLayers.Ejiro Asiuwhu Follow Software Engineer with a drive for building highly scalable and performant web applications. By separating the trim into it’s own FRenderLayer (by placing Trim sprites in their own atlas), the ForwardAdd lighting pass is able to properly light the scene: Without having the trim tile in it’s own FRenderLayer, the trim tile would be 2x the brightness since it would receive the ForwardAdd lighting results from the sprite under it and its sprite. Spacezoo, the ground has a trim layer that softens the transition between tiles. As long as the sprites are in the same texture/normalmap atlas, the batching should keep them in a single FRenderLayer just like the Futile.Basic shader.Īlso note that if you have overlapping sprites and are seeing lighting artifacts from the base sprite being lit and then the overlapping sprite being lit again and appearing brighter, you will need to separate out the overlapping sprites to their own FRenderLayer. Here is an image from the Unity editor where you can see a single FRenderLayer is using an atlas for the texture and normalmap for the tiles in that layer. The important bit is that the Import Type for the normal light map is set to Lightmap. The texture and normal light map below were generated using Filter Forge:Īnd here are the texture and normal light map settings in Unity. Few options for creating normal maps of existing sprites include Sprite Illuminator and Sprite Lamp. Next you need a texture and a normal lighting map for that texture. Note: each Light added to the scene increases the number of draw calls by 1. Here are the light settings as seen in the inspector for the Light Game Object: LightSource.renderMode = LightRenderMode.ForcePixel // ForcePixel = Important LightSource = lightGameObject.AddComponent() LightGameObject = new GameObject( "Light") To keep the FRenderLayer batching sane, define your lighting shader before creating the FSprites, and then set each FSprite.shader to the previously created lighting shader so each sprite will continue to be properly batched. Tags Adding Normal Mapped Lighting Shader to a FSprite these are applied to all of the Passes in this SubShader The second pass (ForwardAdd) renders the additive lights using a fragment shader that calculates the diffuse/specular components of the light based on the normal light map associated with the main texture. The first pass (ForwardBase) simply renders the diffuse texture without any lighting. The Shader used to achieve the normal mapped lighting is a two Pass Forward Lighting shader. 0.55), which is set under Edit -> Render Settings -> Ambient Light (Unity 4) or Window -> Lighting -> Ambient Lighting (Unity 5). Also, since the final lighting calculation will use UNITY_LIGHTMODEL_AMBIENT, ensure that the ambient lighting is close to white and intensity is set to desired value (e.g. Adding Normal Mapped Lighting Shader to a FSpriteīefore starting, make sure your project is using Forward Rendering, which you may change under Player Settings -> Rendering Path = Forward.
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