static void OnGUI_SelectShader(Material mat)
{
string shaderName = mat.shader.name;
int idx = shaderName.LastIndexOf('/');
if (idx >= 0)
{
shaderName = shaderName.Substring(idx + 1);
}
string nameList = ShaderNative.ShaderGetNameList();
string[] arr = nameList.Split(',');
List <ShaderNameNode> nameNode = new List <ShaderNameNode>();
if (ImGui.BeginCombo($"Shader##Combo#ShaderName#ImporterMaterial#{s_mat_count++}", shaderName))
{
for (int i = 0; i < arr.Length; ++i)
{
string ele = arr[i];
ShaderNameNode root = new ShaderNameNode();
DeepSplitName(ref root, ele);
nameNode.Add(root);
}
foreach (var node in nameNode)
{
IterNode(node, mat.shader.name, ref mat);
}
ImGui.EndCombo();
}
}
static void IterNode(ShaderNameNode node, string oriName, ref Material curMat)
{
if (node.name == null || node.name == "")
{
if (node.child != null)
{
IterNode(node.child, oriName, ref curMat);
}
}
else
{
if (node.child == null)
{
if (ImGui.MenuItem(node.name, "", node.fullname == oriName))
{
OnSelectShader(node, oriName, ref curMat);
}
}
else
{
if (ImGui.BeginMenu(node.name))
{
IterNode(node.child, oriName, ref curMat);
ImGui.EndMenu();
}
}
}
}
static void OnSelectShader(ShaderNameNode node, string oriName, ref Material curMat)
{
if (node.fullname != oriName)
{
curMat.shader = Shader.Find(node.fullname);
Debug.LogFormat("切换了shader {0}", node.fullname);
}
}
static void DeepSplitName(ref ShaderNameNode parent, string name)
{
int idx = name.IndexOf('/');
if (idx < 0)
{
ShaderNameNode node = new ShaderNameNode();
node.name = name;
node.parent = parent;
parent.child = node;
}
else
{
string h = name.Substring(0, idx);
string t = name.Substring(idx + 1);
ShaderNameNode node = new ShaderNameNode();
node.name = h;
node.parent = parent;
parent.child = node;
DeepSplitName(ref node, t);
}
}