| public GetTextureCount ( aiTextureType type ) : uint | ||
| type | aiTextureType | |
| return | uint | |
private static void FromAssimpAlphaTexture(Module.Import.Assimp.Context context, Material material, aiMaterial material_data, aiScene scene, string unity_property, aiTextureType texture_type, Color default_color, Func <Color, float> op)
{
if (material_data.GetTextureCount(texture_type) > 0)
{
using (aiString texture_name = new aiString())
{
if (material_data.GetTexturePath(texture_type, 0, texture_name))
{
Texture alpha = new Texture(context, texture_name.ToString(), scene);
Texture base_tex = null;
Material.TextureParams param = material.GetTextureParams(unity_property);
if (param != null)
{
CLARTE.Backport.Tuple <Texture, uint> res = context.scene.GetAssimpTexture(param.index);
if (res != null)
{
base_tex = res.Item1;
}
else
{
Debug.LogErrorFormat("Invalid texture index. '{0}' was registered for material '{1}' as texture with index '{2}'. However no texture was found with this index.", unity_property, material.Name, param.index);
}
}
else
{
CLARTE.Backport.Tuple <Texture, uint> assimp_tex = context.scene.GetAssimpTexture(Guid.NewGuid().ToString(), () => new Texture("**E", alpha.width, alpha.height, default_color));
material.AddTextureParams(unity_property, new Material.TextureParams(assimp_tex.Item2));
base_tex = assimp_tex.Item1;
}
if (base_tex != null)
{
base_tex.AddToAlpha(alpha, op);
base_tex.filename = string.Format("**A{0}|{1}", base_tex.filename, texture_name.C_Str());
}
}
}
}
}
private static void FromAssimpNormalsFromHeightmap(Module.Import.Assimp.Context context, Material material, aiMaterial material_data, aiScene scene)
{
if (material_data.GetTextureCount(Assimp.Convert.textureTypes[Assimp.Convert.unityBumpName]) <= 0)
{
using (aiString texture_name = new aiString())
{
if (material_data.GetTexturePath(aiTextureType.aiTextureType_HEIGHT, 0, texture_name))
{
string filename = string.Format("**N{0}", texture_name.C_Str());
material.AddTextureParams(Assimp.Convert.unityBumpName, new Material.TextureParams(context.scene.GetAssimpTexture(filename, () =>
{
Texture texture = new Texture(context, texture_name.C_Str(), scene).HeightmapToNormals(0.5).Blur(0.5);
texture.filename = filename;
return(texture);
}).Item2));
}
}
}
}
public static void FromAssimp(Module.Import.Assimp.Context context, Material material, aiScene scene, aiMaterial material_data, string texture_key, aiTextureType texture_type, float reflectivity)
{
if (texture_type != aiTextureType.aiTextureType_NONE && material_data.GetTextureCount(texture_type) > 0)
{
using (aiString texture_name = new aiString())
{
if (material_data.GetTexturePath(texture_type, 0, texture_name))
{
string filename = texture_name.C_Str();
uint index = context.scene.GetAssimpTexture(filename, () => new Texture(context, filename, scene)).Item2;
material.AddTextureParams(texture_key, new Material.TextureParams(index));
context.progress.Update(ASSIMP_PROGRESS_FACTOR);
}
}
}
Color default_color;
// Add textures as alpha channel of existing textures, or compute normal map from heightmap if not defined.
switch (texture_key)
{
case Assimp.Convert.unityMainTexName:
default_color = Color.white;
Color?diffuse = material.GetColor(Assimp.Convert.unityDiffuseColorName);
if (diffuse.HasValue)
{
default_color = diffuse.Value;
}
// Opacity as main texture alpha channel
FromAssimpAlphaTexture(context, material, material_data, scene, Assimp.Convert.unityMainTexName, aiTextureType.aiTextureType_OPACITY, default_color, c => c.grayscale);
break;
case Assimp.Convert.unityMetallicGlossName:
default_color = Color.black;
float?metallic = material.GetFloat(Assimp.Convert.unityMetallicValueName);
if (metallic.HasValue)
{
default_color = new Color(metallic.Value, metallic.Value, metallic.Value, 1f);
}
// Shininess as alpha channel of metallic gloss map
FromAssimpAlphaTexture(context, material, material_data, scene, Assimp.Convert.unityMetallicGlossName, aiTextureType.aiTextureType_SHININESS, default_color, c => Material.Smoothness(c.grayscale, reflectivity));
break;
case Assimp.Convert.unitySpecGlossName:
default_color = Color.black;
Color?specular = material.GetColor(Assimp.Convert.unitySpecularColorName);
if (specular.HasValue)
{
default_color = specular.Value;
}
// Shininess as alpha channel of specular gloss map
FromAssimpAlphaTexture(context, material, material_data, scene, Assimp.Convert.unitySpecGlossName, aiTextureType.aiTextureType_SHININESS, default_color, c => Material.Smoothness(c.grayscale, reflectivity));
break;
case Assimp.Convert.unityBumpName:
// Bump mapping from heightmap if not defined from normals
FromAssimpNormalsFromHeightmap(context, material, material_data, scene);
break;
}
}