Made a start on scriptable visual styles, which encompasses material templates, mesh renderer configuration and texture assignment. The default implementation is based on the GLQuake look, but everything can be overridden to create completely new visual styles.

Assets/Scenes/Default.unity

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Assets/Scripts/Bootstrap.cs

@@ -9,6 +9,9 @@ public class Bootstrap : MonoBehaviour
     private float speed = 1.0f;
 
     private UniQuake uq;
+
+    [SerializeField]
+    private List<VisualStyle> visualStyles = new List<VisualStyle>();
     
     private void Start()
     {

Assets/Scripts/VisualStyle.cs

@@ -0,0 +1,96 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+[CreateAssetMenu(fileName = "VisualStyle", menuName = "UniQuake/Visual Style", order = 1)]
+public class VisualStyle : ScriptableObject
+{
+    [SerializeField]
+    private Material aliasModelMaterial;
+    
+    [SerializeField]
+    private Material brushModelMaterial;    // TODO: not sure if this should be separate or combined into one entityMaterial
+    
+    [SerializeField]
+    private Material worldModelMaterial;    // TODO: split into wall, liquid, sky, etc
+    
+    // TODO: add particle effects
+    
+    public virtual void SetupAliasModelRenderer(MeshRenderer meshRenderer)
+    {
+        meshRenderer.material = new Material(aliasModelMaterial);
+        meshRenderer.shadowCastingMode = ShadowCastingMode.Off;
+        meshRenderer.receiveShadows = false;
+        meshRenderer.lightProbeUsage = LightProbeUsage.Off;
+        meshRenderer.reflectionProbeUsage = ReflectionProbeUsage.Off;
+    }
+
+    public virtual void SetupAliasModelRenderer(SkinnedMeshRenderer skinnedMeshRenderer)
+    {
+        skinnedMeshRenderer.material = new Material(aliasModelMaterial);
+        skinnedMeshRenderer.shadowCastingMode = ShadowCastingMode.Off;
+        skinnedMeshRenderer.receiveShadows = false;
+        skinnedMeshRenderer.lightProbeUsage = LightProbeUsage.Off;
+        skinnedMeshRenderer.reflectionProbeUsage = ReflectionProbeUsage.Off;
+    }
+
+    public virtual void SetupBrushModelRenderer(MeshRenderer meshRenderer)
+    {
+        meshRenderer.material = new Material(brushModelMaterial);
+        meshRenderer.shadowCastingMode = ShadowCastingMode.Off;
+        meshRenderer.receiveShadows = false;
+        meshRenderer.lightProbeUsage = LightProbeUsage.Off;
+        meshRenderer.reflectionProbeUsage = ReflectionProbeUsage.Off;
+    }
+
+    public virtual void SetupWorldModelRenderer(MeshRenderer meshRenderer)
+    {
+        meshRenderer.material = new Material(worldModelMaterial);
+        meshRenderer.shadowCastingMode = ShadowCastingMode.Off;
+        meshRenderer.receiveShadows = false;
+        meshRenderer.lightProbeUsage = LightProbeUsage.Off;
+        meshRenderer.reflectionProbeUsage = ReflectionProbeUsage.Off;
+    }
+
+    public virtual void SetAliasModelTextures(Material material, Texture2D mainTexture, Texture2D fullBright)
+    {
+        material.mainTexture = mainTexture;
+
+        material.SetTexture("_EmissionMap", fullBright);
+        material.SetColor("_EmissionColor", Color.white);
+        
+        if (fullBright != null)
+            material.EnableKeyword("_EMISSION");
+        else
+            material.DisableKeyword("_EMISSION");
+    }
+
+    public virtual void SetBrushModelTextures(Material material, Texture2D mainTexture, Texture2D fullBright)
+    {
+        material.mainTexture = mainTexture;
+
+        material.SetTexture("_EmissionMap", fullBright);
+        material.SetColor("_EmissionColor", Color.white);
+        
+        if (fullBright != null)
+            material.EnableKeyword("_EMISSION");
+        else
+            material.DisableKeyword("_EMISSION");
+    }
+
+    public virtual void SetWorldModelTextures(Material material, Texture2D mainTexture, Texture2D fullBright, Texture2D lightmap)
+    {
+        material.mainTexture = mainTexture;
+
+        material.SetTexture("_EmissionMap", fullBright);
+        material.SetColor("_EmissionColor", Color.white);
+        
+        if (fullBright != null)
+            material.EnableKeyword("_EMISSION");
+        else
+            material.DisableKeyword("_EMISSION");
+        
+        // TODO: lightmap texture
+    }
+}

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