72 lines
1.6 KiB
Markdown
72 lines
1.6 KiB
Markdown
## BRDF
|
||
案例中使用了迪士尼模型。
|
||
|
||
## 混合模式
|
||
`SrcBlend`为`One`，`DetBlend`为`OneMinusSrc`
|
||
|
||
## Shader GUI
|
||
在`Shader`{}内添加`CustomEditor“ CustomShaderGUI”`。之后添加脚本：
|
||
```c#
|
||
using UnityEditor;
|
||
using UnityEngine;
|
||
using UnityEngine.Rendering;
|
||
|
||
public class CustomShaderGUI : ShaderGUI {
|
||
MaterialEditor editor;
|
||
Object[] materials;
|
||
MaterialProperty[] properties;
|
||
|
||
public override void OnGUI (
|
||
MaterialEditor materialEditor, MaterialProperty[] properties
|
||
) {
|
||
base.OnGUI(materialEditor, properties);
|
||
editor = materialEditor;
|
||
materials = materialEditor.targets;
|
||
this.properties = properties;
|
||
}
|
||
}
|
||
```
|
||
之后实现
|
||
```c#
|
||
bool HasProperty (string name) =>
|
||
FindProperty(name, properties, false) != null;
|
||
|
||
void SetProperty (string name, string keyword, bool value) {
|
||
if (SetProperty(name, value ? 1f : 0f)) {
|
||
SetKeyword(keyword, value);
|
||
}
|
||
}
|
||
|
||
bool SetProperty (string name, float value) {
|
||
MaterialProperty property = FindProperty(name, properties, false);
|
||
if (property != null) {
|
||
property.floatValue = value;
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
void SetKeyword (string keyword, bool enabled) {
|
||
if (enabled) {
|
||
foreach (Material m in materials) {
|
||
m.EnableKeyword(keyword);
|
||
}
|
||
}
|
||
else {
|
||
foreach (Material m in materials) {
|
||
m.DisableKeyword(keyword);
|
||
}
|
||
}
|
||
}
|
||
```
|
||
就可以添加若干自定义Shader属性的`Set`函数了。添加按钮逻辑如下：
|
||
```c#
|
||
bool PresetButton (string name) {
|
||
if (GUILayout.Button(name)) {
|
||
editor.RegisterPropertyChangeUndo(name);
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
```
|