/// <summary>
/// Test a gameObject and it's mesh renderers for compatible shaders, and if one is found
/// load it's attribute data into meshAttributes.
/// </summary>
/// <param name="go">The GameObject being checked for texture blend support</param>
/// <returns></returns>
internal bool CheckForTextureBlendSupport(GameObject go)
{
AttributeLayoutContainer detectedMeshAttributes;
bool supports = false;
var materials = Util.GetMaterials(go);
m_MeshAttributesContainers.Clear();
Material mat;
List <int> indexes = new List <int>();
for (int i = 0; i < materials.Count; i++)
{
mat = materials[i];
if (PolyShaderUtil.GetMeshAttributes(mat, out detectedMeshAttributes))
{
m_MeshAttributesContainers.Add(detectedMeshAttributes);
indexes.Add(i);
supports = true;
}
}
if (supports)
{
m_MeshAttributesContainer = m_MeshAttributesContainers.First();
foreach (int i in indexes)
{
ArrayUtility.Add <string>(ref m_AvailableMaterialsAsString, materials[i].name);
}
}
return(supports);
}
/// <summary>
/// Find a path to the Polybrush metadata for a shader.
/// </summary>
/// <param name="shader">Shader associated with the metadata</param>
/// <returns>The path found, null if not found.</returns>
internal static string FindPolybrushMetaDataForShader(Shader shader)
{
if (shader == null)
{
return(null);
}
string path = AssetDatabase.GetAssetPath(shader);
if (string.IsNullOrEmpty(path))
{
return(null);
}
string filename = Path.GetFileNameWithoutExtension(path);
string directory = Path.GetDirectoryName(path);
string[] paths = new string[]
{
string.Format("{0}/{1}.{2}", directory, PolyShaderUtil.GetMetaDataPath(shader), SHADER_ATTRIB_FILE_EXTENSION),
string.Format("{0}/{1}.{2}", directory, filename, SHADER_ATTRIB_FILE_EXTENSION)
};
// @todo verify that the json is actually valid
foreach (string str in paths)
{
if (File.Exists(str))
{
// remove `..` from path since `AssetDatabase.LoadAssetAtPath` doesn't like 'em
string full = Path.GetFullPath(str).Replace("\\", "/");
string resolved = full.Replace(Application.dataPath, "Assets");
return(resolved);
}
}
return(null);
}
/// <summary>
/// Searches only by looking for a compatibly named file in the same directory.
/// </summary>
/// <param name="shader">Shader associated with the metadata</param>
/// <param name="attributes">result if any metadata found</param>
/// <returns></returns>
internal static bool FindMeshAttributesForShader(Shader shader, out AttributeLayoutContainer attributes)
{
attributes = null;
string path = AssetDatabase.GetAssetPath(shader);
string filename = Path.GetFileNameWithoutExtension(path);
string directory = Path.GetDirectoryName(path);
string[] paths = new string[]
{
string.Format("{0}/{1}.{2}", directory, filename, SHADER_ATTRIB_FILE_EXTENSION),
string.Format("{0}/{1}.{2}", directory, PolyShaderUtil.GetMetaDataPath(shader), SHADER_ATTRIB_FILE_EXTENSION)
};
foreach (string str in paths)
{
if (TryReadAttributeLayoutsFromJsonFile(str, out attributes))
{
return(true);
}
}
return(false);
}
// Called when the mouse begins hovering an editable object.
internal override void OnBrushEnter(EditableObject target, BrushSettings settings)
{
base.OnBrushEnter(target, settings);
if (target.graphicsMesh == null)
{
return;
}
EditableObjectData data;
if (!m_EditableObjectsData.TryGetValue(target, out data))
{
data = new EditableObjectData();
m_EditableObjectsData.Add(target, data);
}
RebuildCaches(target, settings);
data.TriangleLookup = PolyMeshUtility.GetAdjacentTriangles(target.editMesh);
MeshRenderer mr = target.gameObjectAttached.GetComponent <MeshRenderer>();
if (mr != null && mr.sharedMaterials != null)
{
data.LikelySupportsVertexColors = mr.sharedMaterials.Any(x =>
x != null && x.shader != null && PolyShaderUtil.SupportsVertexColors(x.shader));
}
else
{
data.LikelySupportsVertexColors = false;
}
}