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316 行
12 KiB

using System;
using UnityEngine;
using UnityEngine.Rendering;
namespace UnityEditor.Experimental.ScriptableRenderLoop
{
internal class UnlitGUI : ShaderGUI
{
public enum SurfaceType
{
Opaque,
Transparent
}
public enum BlendMode
{
Lerp,
Add,
SoftAdd,
Multiply,
Premultiply
}
public enum DoubleSidedMode
{
None,
DoubleSided
}
private static class Styles
{
public static string OptionText = "Options";
public static string SurfaceTypeText = "Surface Type";
public static string BlendModeText = "Blend Mode";
public static GUIContent alphaCutoffEnableText = new GUIContent("Alpha Cutoff Enable", "Threshold for alpha cutoff");
public static GUIContent alphaCutoffText = new GUIContent("Alpha Cutoff", "Threshold for alpha cutoff");
public static GUIContent doubleSidedModeText = new GUIContent("Double Sided", "This will render the two face of the objects (disable backface culling)");
public static readonly string[] surfaceTypeNames = Enum.GetNames(typeof(SurfaceType));
public static readonly string[] blendModeNames = Enum.GetNames(typeof(BlendMode));
public static string InputsOptionsText = "Inputs options";
public static string InputsText = "Inputs";
public static string InputsMapText = "";
public static GUIContent colorText = new GUIContent("Color + Opacity", "Albedo (RGB) and Opacity (A)");
public static GUIContent emissiveText = new GUIContent("Emissive Color", "Emissive");
public static GUIContent emissiveIntensityText = new GUIContent("Emissive Intensity", "Emissive");
}
MaterialProperty surfaceType = null;
MaterialProperty blendMode = null;
MaterialProperty alphaCutoff = null;
MaterialProperty alphaCutoffEnable = null;
MaterialProperty doubleSidedMode = null;
MaterialProperty color = null;
MaterialProperty colorMap = null;
MaterialProperty emissiveColor = null;
MaterialProperty emissiveColorMap = null;
MaterialProperty emissiveIntensity = null;
protected MaterialEditor m_MaterialEditor;
protected const string kSurfaceType = "_SurfaceType";
protected const string kBlendMode = "_BlendMode";
protected const string kAlphaCutoff = "_AlphaCutoff";
protected const string kAlphaCutoffEnabled = "_AlphaCutoffEnable";
protected const string kDoubleSidedMode = "_DoubleSidedMode";
protected const string kEmissiveColorMap = "_EmissiveColorMap";
public void FindOptionProperties(MaterialProperty[] props)
{
surfaceType = FindProperty(kSurfaceType, props);
blendMode = FindProperty(kBlendMode, props);
alphaCutoff = FindProperty(kAlphaCutoff, props);
alphaCutoffEnable = FindProperty(kAlphaCutoffEnabled, props);
doubleSidedMode = FindProperty(kDoubleSidedMode, props);
}
public void FindInputProperties(MaterialProperty[] props)
{
color = FindProperty("_Color", props);
colorMap = FindProperty("_ColorMap", props);
emissiveColor = FindProperty("_EmissiveColor", props);
emissiveColorMap = FindProperty(kEmissiveColorMap, props);
emissiveIntensity = FindProperty("_EmissiveIntensity", props);
}
public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] props)
{
FindOptionProperties(props); // MaterialProperties can be animated so we do not cache them but fetch them every event to ensure animated values are updated correctly
FindInputProperties(props);
m_MaterialEditor = materialEditor;
Material material = materialEditor.target as Material;
ShaderPropertiesGUI(material);
}
protected void ShaderOptionsGUI()
{
EditorGUI.indentLevel++;
GUILayout.Label(Styles.OptionText, EditorStyles.boldLabel);
SurfaceTypePopup();
if ((SurfaceType)surfaceType.floatValue == SurfaceType.Transparent)
{
BlendModePopup();
}
m_MaterialEditor.ShaderProperty(alphaCutoffEnable, Styles.alphaCutoffEnableText.text);
if (alphaCutoffEnable.floatValue == 1.0)
{
m_MaterialEditor.ShaderProperty(alphaCutoff, Styles.alphaCutoffText.text);
}
m_MaterialEditor.ShaderProperty(doubleSidedMode, Styles.doubleSidedModeText.text);
EditorGUI.indentLevel--;
}
protected void ShaderInputOptionsGUI()
{
EditorGUI.indentLevel++;
EditorGUI.indentLevel--;
}
protected void ShaderInputGUI()
{
EditorGUI.indentLevel++;
GUILayout.Label(Styles.InputsText, EditorStyles.boldLabel);
m_MaterialEditor.TexturePropertySingleLine(Styles.colorText, colorMap, color);
m_MaterialEditor.TexturePropertySingleLine(Styles.emissiveText, emissiveColorMap, emissiveColor);
m_MaterialEditor.ShaderProperty(emissiveIntensity, Styles.emissiveIntensityText);
m_MaterialEditor.LightmapEmissionProperty(MaterialEditor.kMiniTextureFieldLabelIndentLevel + 1);
EditorGUI.indentLevel--;
}
public void ShaderPropertiesGUI(Material material)
{
// Use default labelWidth
EditorGUIUtility.labelWidth = 0f;
// Detect any changes to the material
EditorGUI.BeginChangeCheck();
{
ShaderOptionsGUI();
EditorGUILayout.Space();
ShaderInputOptionsGUI();
EditorGUILayout.Space();
ShaderInputGUI();
}
if (EditorGUI.EndChangeCheck())
{
foreach (var obj in m_MaterialEditor.targets)
SetupMaterial((Material)obj);
}
}
// TODO: try to setup minimun value to fall back to standard shaders and reverse
public override void AssignNewShaderToMaterial(Material material, Shader oldShader, Shader newShader)
{
base.AssignNewShaderToMaterial(material, oldShader, newShader);
}
void SurfaceTypePopup()
{
EditorGUI.showMixedValue = surfaceType.hasMixedValue;
var mode = (SurfaceType)surfaceType.floatValue;
EditorGUI.BeginChangeCheck();
mode = (SurfaceType)EditorGUILayout.Popup(Styles.SurfaceTypeText, (int)mode, Styles.surfaceTypeNames);
if (EditorGUI.EndChangeCheck())
{
m_MaterialEditor.RegisterPropertyChangeUndo("Surface Type");
surfaceType.floatValue = (float)mode;
}
EditorGUI.showMixedValue = false;
}
void BlendModePopup()
{
EditorGUI.showMixedValue = blendMode.hasMixedValue;
var mode = (BlendMode)blendMode.floatValue;
EditorGUI.BeginChangeCheck();
mode = (BlendMode)EditorGUILayout.Popup(Styles.BlendModeText, (int)mode, Styles.blendModeNames);
if (EditorGUI.EndChangeCheck())
{
m_MaterialEditor.RegisterPropertyChangeUndo("Blend Mode");
blendMode.floatValue = (float)mode;
}
EditorGUI.showMixedValue = false;
}
protected virtual void SetupKeywordsForInputMaps(Material material)
{
SetKeyword(material, "_EMISSIVE_COLOR_MAP", material.GetTexture(kEmissiveColorMap));
}
protected void SetupMaterial(Material material)
{
// Note: keywords must be based on Material value not on MaterialProperty due to multi-edit & material animation
// (MaterialProperty value might come from renderer material property block)
bool alphaTestEnable = material.GetFloat(kAlphaCutoffEnabled) == 1.0;
SurfaceType surfaceType = (SurfaceType)material.GetFloat(kSurfaceType);
BlendMode blendMode = (BlendMode)material.GetFloat(kBlendMode);
DoubleSidedMode doubleSidedMode = (DoubleSidedMode)material.GetFloat(kDoubleSidedMode);
if (surfaceType == SurfaceType.Opaque)
{
material.SetOverrideTag("RenderType", alphaTestEnable ? "TransparentCutout" : "");
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
material.SetInt("_ZWrite", 1);
material.renderQueue = alphaTestEnable ? (int)UnityEngine.Rendering.RenderQueue.AlphaTest : -1;
}
else
{
material.SetOverrideTag("RenderType", "Transparent");
material.SetInt("_ZWrite", 0);
material.renderQueue = (int)UnityEngine.Rendering.RenderQueue.Transparent;
switch (blendMode)
{
case BlendMode.Lerp:
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
break;
case BlendMode.Add:
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
break;
case BlendMode.SoftAdd:
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusDstColor);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
break;
case BlendMode.Multiply:
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.DstColor);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
break;
case BlendMode.Premultiply:
material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
break;
}
}
if (doubleSidedMode == DoubleSidedMode.None)
{
material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Back);
}
else
{
material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Off);
}
SetKeyword(material, "_ALPHATEST_ON", alphaTestEnable);
SetupKeywordsForInputMaps(material);
// Setup lightmap emissive flags
MaterialGlobalIlluminationFlags flags = material.globalIlluminationFlags;
if ((flags & (MaterialGlobalIlluminationFlags.BakedEmissive | MaterialGlobalIlluminationFlags.RealtimeEmissive)) != 0)
{
if (LitGUI.ShouldEmissionBeEnabled(material))
flags &= ~MaterialGlobalIlluminationFlags.EmissiveIsBlack;
else
flags |= MaterialGlobalIlluminationFlags.EmissiveIsBlack;
material.globalIlluminationFlags = flags;
}
}
bool HasValidEmissiveKeyword(Material material)
{
/*
// Material animation might be out of sync with the material keyword.
// So if the emission support is disabled on the material, but the property blocks have a value that requires it, then we need to show a warning.
// (note: (Renderer MaterialPropertyBlock applies its values to emissionColorForRendering))
bool hasEmissionKeyword = material.IsKeywordEnabled ("_EMISSION");
if (!hasEmissionKeyword && ShouldEmissionBeEnabled (material, emissionColorForRendering.colorValue))
return false;
else
return true;
*/
return true;
}
protected void SetKeyword(Material m, string keyword, bool state)
{
if (state)
m.EnableKeyword(keyword);
else
m.DisableKeyword(keyword);
}
}
} // namespace UnityEditor