https://github.com/Unity-Technologies/ScriptableRenderPipeline/wiki/LayeredMaterial Can anyone provide some insight here? I'm researching the Layered/Lit shader because I'm planning on adapting some awesome photogrammetry assets I've been creating to the Unity HDRP format. I need to know everything about this shader in order to make the best product I can and also ensure it is 'plug and play' ready. Unity seems to want to spend lots of time and money programming features, but wont spend 2 sentences explaining it. I've done what I can researching this on my own and I am left with some unsolved questions. For me, the github images in the link above are all broken. That doesn't help. Main Layer Influence [x] <-- This does nothing It even has a texture map that does nothing whether I try a noisy texture, black, or white when tested with a 3 layer shader. No visual change in the layering blends in color, normal, or smoothness when tested. What am I to make of this? (Regarding the extra layers 1,2&3 in the Layered/Lit shader quoted from the link at top) ----------------------- snip --------------- It is the same setting than the main layer except for Layering options Use Opacity map as Density map: Base color alpha channel is used as opacity threshold instead of standard opacity. *Me: What is a Density map? The Base layer's alpha does what now? The vertex color modulates the threshold. The effect depends if the vertex color mode is set to multiply or to add (See: 2-4 Inputs - Vertex color mode). *Me: The link says "Access Denied" 0= full opacity, 1= full density. *Me: Density is a term I've never heard before in Unity shaders. What? Example with multiply mode (mask value is 1 by default): *Me: I like how by "1" they mean "255" in texture space. Regardless, I see the word "multiply mode" nowhere in the shader controls. *Me: Would be nice if any of my browsers could see it BaseColor influence: Variance of the current layer is add to main layer. *Me: What are they talking about? There's nothing in the shader options mentioning this or the other influences below. Perhaps it refers to the missing image? Normal influence: main layer Normal map is added. Heightmap influence: main layer Height map is added. -------------------- /snip ------------------- I tried 2 versions of the color texture, one with no alpha, and one with a noisy gray-scale. No visual change. So in short, what is a density map and how does it apply to the layer blending, and why doesn't the "main layer influence" button do anything at all for my tests? I propose we rename this shader the "Magnet Shader" to honor the old meme "Magnets; How do they work?!"