public static Texture2D ImportConnectedTexture <T>(Scene scene,
Connectable <T> connection,
bool isNormalMap,
SceneImportOptions options,
out string uvPrimvar)
{
uvPrimvar = null;
// TODO: look for the expected texture/primvar reader pair.
var textureSample = new TextureReaderSample();
var connectedPrimPath = scene.GetSdfPath(connection.connectedPath).GetPrimPath();
Texture2D result = null;
scene.Read(connectedPrimPath, textureSample);
if (textureSample.file.defaultValue != null &&
!string.IsNullOrEmpty(textureSample.file.defaultValue.GetResolvedPath()))
{
if (OnResolveTexture != null)
{
result = OnResolveTexture(textureSample.file.defaultValue, isNormalMap, options);
}
else
{
result = DefaultTextureResolver(textureSample.file.defaultValue, isNormalMap, options);
}
}
Connectable <Vector2> st = textureSample.st;
if (st != null && st.IsConnected() && !string.IsNullOrEmpty(st.connectedPath))
{
var pvSrc = new PrimvarReaderSample <Vector2>();
scene.Read(new pxr.SdfPath(textureSample.st.connectedPath).GetPrimPath(), pvSrc);
if (pvSrc.varname != null &&
pvSrc.varname.defaultValue != null)
{
// Ask the mesh importer to load the specified texcoord.
// This must be a callback, since materials-to-meshes are one-to-many.
uvPrimvar = pvSrc.varname.defaultValue;
}
}
return(result);
}
protected void ImportValueOrMap <T>(Scene scene,
Connectable <T> usdParam,
bool isNormalMap,
SceneImportOptions options,
ref Texture2D map,
ref T?value,
out string uvPrimvar) where T : struct
{
uvPrimvar = null;
if (usdParam.IsConnected())
{
map = MaterialImporter.ImportConnectedTexture(scene, usdParam, isNormalMap, options, out uvPrimvar);
}
else
{
value = usdParam.defaultValue;
}
}
protected void ImportColorOrMap(Scene scene,
Connectable <Vector3> usdParam,
bool isNormalMap,
SceneImportOptions options,
ref Texture2D map,
ref Color?value,
out string uvPrimvar)
{
uvPrimvar = null;
if (usdParam.IsConnected())
{
map = MaterialImporter.ImportConnectedTexture(scene, usdParam, isNormalMap, options, out uvPrimvar);
}
else
{
var rgb = usdParam.defaultValue;
value = new Color(rgb.x, rgb.y, rgb.z).gamma;
}
}
public static Texture2D ImportConnectedTexture <T>(Scene scene,
Connectable <T> connection,
bool isNormalMap,
SceneImportOptions options,
out string uvPrimvar)
{
uvPrimvar = null;
// TODO: look for the expected texture/primvar reader pair.
var textureSample = new TextureReaderSample();
var connectedPrimPath = scene.GetSdfPath(connection.connectedPath).GetPrimPath();
Texture2D result = null;
scene.Read(connectedPrimPath, textureSample);
if (textureSample.file.defaultValue != null &&
!string.IsNullOrEmpty(textureSample.file.defaultValue.GetResolvedPath()))
{
if (OnResolveTexture != null)
{
result = OnResolveTexture(textureSample.file.defaultValue, isNormalMap, options);
}
else
{
result = DefaultTextureResolver(textureSample.file.defaultValue, isNormalMap, options);
}
}
Connectable <Vector2> st = textureSample.st;
if (st != null && st.IsConnected() && !string.IsNullOrEmpty(st.connectedPath))
{
var pvSrc = new PrimvarReaderSample <Vector2>();
scene.Read(new pxr.SdfPath(textureSample.st.connectedPath).GetPrimPath(), pvSrc);
if (pvSrc.varname != null)
{
if (pvSrc.varname.IsConnected())
{
var connPath = new pxr.SdfPath(pvSrc.varname.GetConnectedPath());
var attr = scene.GetAttributeAtPath(connPath);
if (attr != null)
{
var value = attr.Get(scene.Time);
uvPrimvar = pxr.UsdCs.VtValueToTfToken(value).ToString();
}
else
{
Debug.LogWarning("No primvar name was provided at the connected path: " + connPath);
uvPrimvar = "";
}
}
else if (pvSrc.varname.defaultValue != null)
{
// Ask the mesh importer to load the specified texcoord.
// This must be a callback, since materials-to-meshes are one-to-many.
uvPrimvar = pvSrc.varname.defaultValue;
}
}
}
return(result);
}
