private static void LoadMaterials(AssetImporterGltfMeshContext context)
{
for (int i = 0; i < context.Model.Materials.Length; i++)
{
glTFLoader.Schema.Material mat = context.Model.Materials[i];
}
}
private void InitMaterials()
{
// default material is always set at index 0;
float grey = 0.8f;
float alpha = 1.0f;
gltf.Material m = CreateMaterial("Default material", grey, grey, grey, alpha);
_materials.Add(m);
}
int CreateSolidColorMaterial(Color4f color)
{
glTFLoader.Schema.Material material = new glTFLoader.Schema.Material()
{
PbrMetallicRoughness = new MaterialPbrMetallicRoughness()
{
BaseColorFactor = color.ToFloatArray(),
}
};
return(dummy.Materials.AddAndReturnIndex(material));
}
void HandleBaseColor(Rhino.DocObjects.Material rhinoMaterial, glTFLoader.Schema.Material gltfMaterial)
{
Rhino.DocObjects.Texture baseColorDoc = rhinoMaterial.GetTexture(TextureType.PBR_BaseColor);
Rhino.DocObjects.Texture alphaTextureDoc = rhinoMaterial.GetTexture(TextureType.PBR_Alpha);
RenderTexture baseColorTexture = rhinoMaterial.RenderMaterial.GetTextureFromUsage(RenderMaterial.StandardChildSlots.PbrBaseColor);
RenderTexture alphaTexture = rhinoMaterial.RenderMaterial.GetTextureFromUsage(RenderMaterial.StandardChildSlots.PbrAlpha);
bool baseColorLinear = baseColorTexture == null ? false : IsLinear(baseColorTexture);
bool hasBaseColorTexture = baseColorDoc == null ? false : baseColorDoc.Enabled;
bool hasAlphaTexture = alphaTextureDoc == null ? false : alphaTextureDoc.Enabled;
bool baseColorDiffuseAlphaForTransparency = rhinoMaterial.PhysicallyBased.UseBaseColorTextureAlphaForObjectAlphaTransparencyTexture;
if (!baseColorDiffuseAlphaForTransparency && !hasAlphaTexture)
{
gltfMaterial.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.OPAQUE;
}
else
{
gltfMaterial.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.BLEND;
}
Color4f baseColor = rhinoMaterial.PhysicallyBased.BaseColor;
if (workflow.PreProcessColors)
{
baseColor = Color4f.ApplyGamma(baseColor, workflow.PreProcessGamma);
}
if (!hasBaseColorTexture && !hasAlphaTexture)
{
gltfMaterial.PbrMetallicRoughness.BaseColorFactor = new float[]
{
baseColor.R,
baseColor.G,
baseColor.B,
(float)rhinoMaterial.PhysicallyBased.Alpha,
};
}
else
{
if (!hasAlphaTexture)
{
float alpha = (float)rhinoMaterial.PhysicallyBased.Alpha;
alphaTexture = CreateSolidColorRhinoTexture(new Color4f(alpha, alpha, alpha, 1.0f), new Size(256, 256));
}
gltfMaterial.PbrMetallicRoughness.BaseColorTexture = CombineBaseColorAndAlphaTexture(baseColorTexture, alphaTexture, baseColorDiffuseAlphaForTransparency, baseColor, baseColorLinear);
}
}
internal static Dictionary <string, int> AddMaterials(this Gltf gltf, IList <Material> materials)
{
var materialDict = new Dictionary <string, int>();
var newMaterials = new List <glTFLoader.Schema.Material>();
var matId = 0;
foreach (var material in materials)
{
if (materialDict.ContainsKey(material.Name))
{
continue;
}
var m = new glTFLoader.Schema.Material();
newMaterials.Add(m);
m.PbrMetallicRoughness = new MaterialPbrMetallicRoughness();
m.PbrMetallicRoughness.BaseColorFactor = new[] { material.Color.Red, material.Color.Green, material.Color.Blue, material.Color.Alpha };
m.PbrMetallicRoughness.MetallicFactor = 1.0f;
m.Name = material.Name;
if (material.Color.Alpha < 1.0)
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.BLEND;
}
else
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.OPAQUE;
}
m.Extensions = new Dictionary <string, object> {
{ "KHR_materials_pbrSpecularGlossiness", new Dictionary <string, object> {
{ "diffuseFactor", new[] { material.Color.Red, material.Color.Green, material.Color.Blue, material.Color.Alpha } },
{ "specularFactor", new[] { material.SpecularFactor, material.SpecularFactor, material.SpecularFactor } },
{ "glossinessFactor", material.GlossinessFactor }
} }
};
materialDict.Add(m.Name, matId);
matId++;
}
gltf.Materials = newMaterials.ToArray();
return(materialDict);
}
private static gltf.Material CreateMaterial(string name, float red, float greeen, float blue, float alpha)
{
gltf.Material m = new glTFLoader.Schema.Material();
m.Name = name;
m.PbrMetallicRoughness = new glTFLoader.Schema.MaterialPbrMetallicRoughness()
{
BaseColorFactor = new Single[] { red, greeen, blue, alpha },
MetallicFactor = 0,
RoughnessFactor = 1
};
m.EmissiveFactor = new Single[] { 0, 0, 0 };
m.AlphaMode = (alpha < 1.0f)
? glTFLoader.Schema.Material.AlphaModeEnum.BLEND
: glTFLoader.Schema.Material.AlphaModeEnum.OPAQUE;
m.AlphaCutoff = 0.5f;
m.DoubleSided = false;
return(m);
}
internal static int AddMaterial(this Gltf gltf, string name, float red, float green, float blue, float alpha, float specularFactor, float glossinessFactor)
{
var m = new glTFLoader.Schema.Material();
m.PbrMetallicRoughness = new MaterialPbrMetallicRoughness();
m.PbrMetallicRoughness.BaseColorFactor = new[] { red, green, blue, alpha };
m.PbrMetallicRoughness.MetallicFactor = 1.0f;
m.Name = name;
if (alpha < 1.0)
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.BLEND;
}
else
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.OPAQUE;
}
m.Extensions = new Dictionary <string, object> {
{ "KHR_materials_pbrSpecularGlossiness", new Dictionary <string, object> {
{ "diffuseFactor", new[] { red, green, blue, alpha } },
{ "specularFactor", new[] { specularFactor, specularFactor, specularFactor } },
{ "glossinessFactor", glossinessFactor }
} }
};
if (gltf.Materials != null)
{
var materials = gltf.Materials.ToList();
materials.Add(m);
gltf.Materials = materials.ToArray();
}
else
{
gltf.Materials = new [] { m };
}
return(gltf.Materials.Length - 1);
}
private UnityEngine.Material LoadMaterial(glTFLoader.Schema.Material material)
{
string techniqueID = material.Technique;
if (techniqueID != null)
{
LoadTechnique(m_model.Techniques[techniqueID]);
}
UnityEngine.Material res = new UnityEngine.Material(UnityEngine.Shader.Find(" Diffuse"));
res.name = material.Name;
if (material.Values != null)
{
if (material.Values.ContainsKey("ambient"))
{
JArray ambientArray = material.Values["ambient"] as JArray;
int[] ambient = ambientArray.ToObject <int[]>();
res.SetColor("_Color", ArrayConverter.ToColor(ambient));
}
if (material.Values.ContainsKey("emission"))
{
JArray emissionArray = material.Values["emission"] as JArray;
int[] emission = emissionArray.ToObject <int[]>();
res.SetColor("_EmissionColor", ArrayConverter.ToColor(emission));
}
if (material.Values.ContainsKey("diffuse"))
{
if (material.Values["diffuse"] is string)
{
string diffuseTextureID = material.Values["diffuse"] as string;
Texture2D texture = LoadTexture(m_model.Textures[diffuseTextureID]);
res.mainTexture = texture;
}
}
}
return(res);
}
internal static Dictionary <string, int> AddMaterials(this Gltf gltf, IList <Material> materials, List <byte> buffer, List <BufferView> bufferViews)
{
var materialDict = new Dictionary <string, int>();
var newMaterials = new List <glTFLoader.Schema.Material>();
var textureDict = new Dictionary <string, int>(); // the name of the texture image, the id of the texture
var textures = new List <glTFLoader.Schema.Texture>();
var images = new List <glTFLoader.Schema.Image>();
var samplers = new List <glTFLoader.Schema.Sampler>();
var matId = 0;
var texId = 0;
var imageId = 0;
var samplerId = 0;
foreach (var material in materials)
{
if (materialDict.ContainsKey(material.Name))
{
continue;
}
var m = new glTFLoader.Schema.Material();
newMaterials.Add(m);
m.PbrMetallicRoughness = new MaterialPbrMetallicRoughness();
m.PbrMetallicRoughness.BaseColorFactor = material.Color.ToArray();
m.PbrMetallicRoughness.MetallicFactor = 1.0f;
m.DoubleSided = material.DoubleSided;
m.Name = material.Name;
if (material.Unlit)
{
m.Extensions = new Dictionary <string, object> {
{ "KHR_materials_unlit", new Dictionary <string, object> {
} }
};
}
else
{
m.Extensions = new Dictionary <string, object> {
{ "KHR_materials_pbrSpecularGlossiness", new Dictionary <string, object> {
{ "diffuseFactor", new[] { material.Color.Red, material.Color.Green, material.Color.Blue, material.Color.Alpha } },
{ "specularFactor", new[] { material.SpecularFactor, material.SpecularFactor, material.SpecularFactor } },
{ "glossinessFactor", material.GlossinessFactor }
} }
};
}
if (material.Texture != null && File.Exists(material.Texture))
{
// Add the texture
var ti = new TextureInfo();
m.PbrMetallicRoughness.BaseColorTexture = ti;
ti.Index = texId;
ti.TexCoord = 0;
((Dictionary <string, object>)m.Extensions["KHR_materials_pbrSpecularGlossiness"])["diffuseTexture"] = ti;
if (textureDict.ContainsKey(material.Texture))
{
ti.Index = textureDict[material.Texture];
}
else
{
var tex = new Texture();
textures.Add(tex);
var image = new glTFLoader.Schema.Image();
using (var ms = new MemoryStream())
{
// Flip the texture image vertically
// to align with OpenGL convention.
// 0,1 1,1
// 0,0 1,0
using (var texImage = SixLabors.ImageSharp.Image.Load(material.Texture))
{
texImage.Mutate(x => x.Flip(FlipMode.Vertical));
texImage.Save(ms, new SixLabors.ImageSharp.Formats.Png.PngEncoder());
}
var imageData = ms.ToArray();
image.BufferView = AddBufferView(bufferViews, 0, buffer.Count, imageData.Length, null, null);
buffer.AddRange(imageData);
}
while (buffer.Count % 4 != 0)
{
// Console.WriteLine("Padding...");
buffer.Add(0);
}
image.MimeType = glTFLoader.Schema.Image.MimeTypeEnum.image_png;
tex.Source = imageId;
images.Add(image);
var sampler = new Sampler();
sampler.MagFilter = Sampler.MagFilterEnum.LINEAR;
sampler.MinFilter = Sampler.MinFilterEnum.LINEAR;
sampler.WrapS = Sampler.WrapSEnum.REPEAT;
sampler.WrapT = Sampler.WrapTEnum.REPEAT;
tex.Sampler = samplerId;
samplers.Add(sampler);
textureDict.Add(material.Texture, texId);
texId++;
imageId++;
samplerId++;
}
}
if (material.Color.Alpha < 1.0)
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.BLEND;
}
else
{
m.AlphaMode = glTFLoader.Schema.Material.AlphaModeEnum.OPAQUE;
}
materialDict.Add(m.Name, matId);
matId++;
}
if (materials.Count > 0)
{
gltf.Materials = newMaterials.ToArray();
}
if (textures.Count > 0)
{
gltf.Textures = textures.ToArray();
}
if (images.Count > 0)
{
gltf.Images = images.ToArray();
}
if (samplers.Count > 0)
{
gltf.Samplers = samplers.ToArray();
}
return(materialDict);
}
public int AddMaterial()
{
// Prep
glTFLoader.Schema.Material material = new glTFLoader.Schema.Material()
{
Name = rhinoMaterial.Name,
PbrMetallicRoughness = new MaterialPbrMetallicRoughness(),
};
if (!rhinoMaterial.IsPhysicallyBased)
{
rhinoMaterial.ToPhysicallyBased();
}
// Textures
Rhino.DocObjects.Texture metallicTexture = rhinoMaterial.PhysicallyBased.GetTexture(TextureType.PBR_Metallic);
Rhino.DocObjects.Texture roughnessTexture = rhinoMaterial.PhysicallyBased.GetTexture(TextureType.PBR_Roughness);
Rhino.DocObjects.Texture normalTexture = rhinoMaterial.PhysicallyBased.GetTexture(TextureType.Bump);
Rhino.DocObjects.Texture occlusionTexture = rhinoMaterial.PhysicallyBased.GetTexture(TextureType.PBR_AmbientOcclusion);
Rhino.DocObjects.Texture emissiveTexture = rhinoMaterial.PhysicallyBased.GetTexture(TextureType.PBR_Emission);
HandleBaseColor(rhinoMaterial, material);
if (metallicTexture != null || roughnessTexture != null)
{
material.PbrMetallicRoughness.MetallicRoughnessTexture = AddMetallicRoughnessTexture(rhinoMaterial);
material.PbrMetallicRoughness.MetallicFactor = 1.0f;
material.PbrMetallicRoughness.RoughnessFactor = 1.0f;
}
else
{
material.PbrMetallicRoughness.MetallicFactor = (float)rhinoMaterial.PhysicallyBased.Metallic;
material.PbrMetallicRoughness.RoughnessFactor = (float)rhinoMaterial.PhysicallyBased.Roughness;
}
if (normalTexture != null && normalTexture.Enabled)
{
material.NormalTexture = AddTextureNormal(normalTexture);
}
if (occlusionTexture != null && occlusionTexture.Enabled)
{
material.OcclusionTexture = AddTextureOcclusion(occlusionTexture.FileReference.FullPath);
}
if (emissiveTexture != null && emissiveTexture.Enabled)
{
material.EmissiveTexture = AddTexture(emissiveTexture.FileReference.FullPath);
float emissionMultiplier = 1.0f;
var param = rhinoMaterial.RenderMaterial.GetParameter("emission-multiplier");
if (param != null)
{
emissionMultiplier = (float)Convert.ToDouble(param);
}
material.EmissiveFactor = new float[]
{
emissionMultiplier,
emissionMultiplier,
emissionMultiplier,
};
}
else
{
material.EmissiveFactor = new float[]
{
rhinoMaterial.PhysicallyBased.Emission.R,
rhinoMaterial.PhysicallyBased.Emission.G,
rhinoMaterial.PhysicallyBased.Emission.B,
};
}
return(dummy.Materials.AddAndReturnIndex(material));
}
