private static void SetupURPMaterial(int pass, DiggerSystem diggerSystem, List <Texture2D> textures)
{
var material = diggerSystem.Materials[pass];
var expectedShaderName = $"Digger/URP/Mesh-Pass{pass}";
if (!material || material.shader.name != expectedShaderName)
{
material = new Material(Shader.Find(expectedShaderName));
}
var tData = diggerSystem.Terrain.terrainData;
if (tData.terrainLayers.Length <= 4 && diggerSystem.Terrain.materialTemplate.IsKeywordEnabled("_TERRAIN_BLEND_HEIGHT"))
{
material.EnableKeyword("_TERRAIN_BLEND_HEIGHT");
material.SetFloat(EnableHeightBlend, 1);
material.SetFloat(HeightTransition, diggerSystem.Terrain.materialTemplate.GetFloat("_HeightTransition"));
}
else
{
material.DisableKeyword("_TERRAIN_BLEND_HEIGHT");
material.SetFloat(EnableHeightBlend, 0);
}
var normalmap = false;
var maskmap = false;
var offset = pass * TxtCountPerPass;
for (var i = 0; i + offset < tData.terrainLayers.Length && i < TxtCountPerPass; i++)
{
var terrainLayer = tData.terrainLayers[i + offset];
if (terrainLayer == null || terrainLayer.diffuseTexture == null)
{
continue;
}
if (terrainLayer.normalMapTexture)
{
normalmap = true;
}
if (terrainLayer.maskMapTexture)
{
maskmap = true;
}
var importer = (TextureImporter)TextureImporter.GetAtPath(AssetDatabase.GetAssetPath(terrainLayer.diffuseTexture));
material.SetFloat($"_NumLayersCount", tData.terrainLayers.Length);
material.SetFloat($"_NormalScale{i}", terrainLayer.normalScale);
material.SetFloat($"_Metallic{i}", terrainLayer.metallic);
material.SetFloat($"_Smoothness{i}", importer && importer.DoesSourceTextureHaveAlpha() ? 1 : terrainLayer.smoothness);
material.SetFloat($"_LayerHasMask{i}", terrainLayer.maskMapTexture ? 1 : 0);
material.SetVector($"_DiffuseRemapScale{i}", terrainLayer.diffuseRemapMax - terrainLayer.diffuseRemapMin);
material.SetVector($"_MaskMapRemapScale{i}", terrainLayer.maskMapRemapMax);
material.SetVector($"_MaskMapRemapOffset{i}", terrainLayer.maskMapRemapMin);
material.SetTexture(SplatPrefixProperty + i, terrainLayer.diffuseTexture);
material.SetTexture(NormalPrefixProperty + i, terrainLayer.normalMapTexture);
material.SetTexture(MaskPrefixProperty + i, terrainLayer.maskMapTexture);
material.SetTextureScale(SplatPrefixProperty + i,
new Vector2(1f / terrainLayer.tileSize.x, 1f / terrainLayer.tileSize.y));
material.SetTextureOffset(SplatPrefixProperty + i, terrainLayer.tileOffset);
textures.Add(terrainLayer.diffuseTexture);
}
if (normalmap)
{
material.EnableKeyword("_NORMALMAP");
}
else
{
material.DisableKeyword("_NORMALMAP");
}
if (maskmap)
{
material.EnableKeyword("_MASKMAP");
}
else
{
material.DisableKeyword("_MASKMAP");
}
var matPath = Path.Combine(diggerSystem.BasePathData, $"meshMaterialPass{pass}.mat");
material = EditorUtils.CreateOrReplaceAsset(material, matPath);
AssetDatabase.ImportAsset(matPath, ImportAssetOptions.ForceUpdate);
diggerSystem.Materials[pass] = material;
}