public static void UpdateShader(ref StripShader shader)
{
if (shader.isReadOnly)
{
EditorUtility.DisplayDialog("Locked file", "Shader file " + shader.name + " is read-only.", "Ok");
return;
}
try
{
// Create backup
string backupPath = shader.path + BACKUP_SUFFIX;
if (!File.Exists(backupPath))
{
AssetDatabase.CopyAsset(shader.path, backupPath);
shader.hasBackup = true;
}
// Reads and updates shader from disk
// string[] shaderLines = File.ReadAllLines(shader.path);
//string[] separator = new string[] { " " };
// Writes modified shader
//File.WriteAllText(shader.path, sb.ToString());
AssetDatabase.Refresh();
}
catch (Exception ex)
{
Debug.LogError("Unexpected exception caught while updating shader: " + ex.Message);
}
}
public static void RestoreShader(ref StripShader shader)
{
try
{
string shaderBackupPath = shader.path + BACKUP_SUFFIX;
if (!File.Exists(shaderBackupPath))
{
EditorUtility.DisplayDialog("Restore shader", "Shader backup is missing!", "OK");
return;
}
File.Copy(shaderBackupPath, shader.path, true);
File.Delete(shaderBackupPath);
if (File.Exists(shaderBackupPath + ".meta"))
{
File.Delete(shaderBackupPath + ".meta");
}
AssetDatabase.Refresh();
}
catch (Exception ex)
{
Debug.LogError("Unexpected exception caught while restoring shader: " + ex.Message);
}
}
public static void ScanShader(ref StripShader shader)
{
//重置shader
shader.passes.Clear();
shader.keywords.Clear();
shader.hasBackup = File.Exists(shader.path + BACKUP_SUFFIX);
shader.pendingChanges = false;
shader.editedByShaderControl = false;
//读取shader文本
string[] shaderLines = File.ReadAllLines(shader.path);
string[] separator = new string[] { " " };
StripShaderPass currentPass = new StripShaderPass();
StripShaderPass basePass = null;
int pragmaControl = 0;
int pass = -1;
bool blockComment = false;
StripKeywordLine keywordLine = new StripKeywordLine();
for (int k = 0; k < shaderLines.Length; k++)
{
string line = shaderLines [k].Trim();
if (line.Length == 0)
{
continue;
}
int lineCommentIndex = line.IndexOf("//");
int blocCommentIndex = line.IndexOf("/*");
int endCommentIndex = line.IndexOf("*/");
if (blocCommentIndex > 0 && (lineCommentIndex > blocCommentIndex || lineCommentIndex < 0))
{
blockComment = true;
}
if (endCommentIndex > blocCommentIndex && (lineCommentIndex > endCommentIndex || lineCommentIndex < 0))
{
blockComment = false;
}
if (blockComment)
{
continue;
}
string lineUPPER = line.ToUpper();
if (lineUPPER.Equals("PASS") || lineUPPER.StartsWith("PASS "))
{
if (pass >= 0)
{
currentPass.pass = pass;
if (basePass != null)
{
currentPass.Add(basePass.keywordLines);
}
shader.Add(currentPass);
}
else if (currentPass.keywordCount > 0)
{
basePass = currentPass;
}
currentPass = new StripShaderPass();
pass++;
continue;
}
int j = line.IndexOf(PRAGMA_COMMENT_MARK);
if (j >= 0)
{
pragmaControl = 1;
}
else
{
j = line.IndexOf(PRAGMA_DISABLED_MARK);
if (j >= 0)
{
pragmaControl = 3;
}
}
if (lineCommentIndex == 0 && pragmaControl != 1 && pragmaControl != 3)
{
continue; // 跳过注释
}
//添加 multicompile
bool isShaderFeature = false;
j = line.IndexOf(PRAGMA_MULTICOMPILE);
if (j < 0)
{
j = line.IndexOf(PRAGMA_SHADER_FEATURE);
isShaderFeature = (j >= 0);
}
if (j >= 0)
{
if (pragmaControl != 2)
{
keywordLine = new StripKeywordLine();
}
keywordLine.isFeature = isShaderFeature;
// 处理在#pragram行中潜在的注释
int lastStringPos = line.IndexOf("//", j + 22);
if (lastStringPos < 0)
{
lastStringPos = line.Length;
}
int length = lastStringPos - j - 22;
string[] kk = line.Substring(j + 22, length).Split(separator, StringSplitOptions.RemoveEmptyEntries);
// 清理关键字 trim
for (int i = 0; i < kk.Length; i++)
{
kk [i] = kk [i].Trim();
}
// 操作关键字
switch (pragmaControl)
{
case 1: // 如果是被编辑器修改的
shader.editedByShaderControl = true;
// 在这行添加原始关键字
for (int s = 0; s < kk.Length; s++)
{
keywordLine.Add(shader.GetKeyword(kk [s]));
}
pragmaControl = 2;
break;
case 2:
// 检查使用的关键字
keywordLine.DisableKeywords();
for (int s = 0; s < kk.Length; s++)
{
StripKeyword keyword = keywordLine.GetKeyword(kk [s]);
if (keyword != null)
{
keyword.enabled = true;
}
}
currentPass.Add(keywordLine);
pragmaControl = 0;
break;
case 3: // 被编辑器关闭的关键字
shader.editedByShaderControl = true;
// // 在这行添加原始的关键字
for (int s = 0; s < kk.Length; s++)
{
StripKeyword keyword = shader.GetKeyword(kk [s]);
keyword.enabled = false;
keywordLine.Add(keyword);
}
currentPass.Add(keywordLine);
pragmaControl = 0;
break;
case 0:
// 在这行添加关键字
for (int s = 0; s < kk.Length; s++)
{
keywordLine.Add(shader.GetKeyword(kk [s]));
}
currentPass.Add(keywordLine);
break;
}
}
//PRAGMA_MULTI_COMPILE_FWDBASE
j = line.IndexOf(PRAGMA_MULTI_COMPILE_FWDBASE_FULLSHADOWS);
if (j >= 0)
{
}
}
currentPass.pass = Mathf.Max(pass, 0);
if (basePass != null)
{
currentPass.Add(basePass.keywordLines);
}
shader.Add(currentPass);
shader.UpdateVariantCount();
}
//解析shader文本
public static void ScanShader(ref StripShader shader)
{
//重置shader
shader.passes.Clear();
shader.keywords.Clear();
shader.hasBackup = File.Exists(shader.path + BACKUP_SUFFIX);
shader.pendingChanges = false;
shader.editedByShaderControl = false;
//读取shader文本
string[] shaderLines = File.ReadAllLines(shader.path);
string[] separator = new string[] { " " };
StripShaderPass currentPass = new StripShaderPass();
StripShaderPass basePass = null;
int pass = -1;
bool blockComment = false;
StripKeywordLine keywordLine = new StripKeywordLine();
for (int k = 0; k < shaderLines.Length; k++)
{
//删除字符串头部和尾部的空格
string line = shaderLines[k].Trim();
if (line.Length == 0)
{
continue;
}
//是否是注释行
IsBlockCommentLine(line, ref blockComment);
if (blockComment)
{
continue;
}
string lineUPPER = line.ToUpper();
if (lineUPPER.Equals("PASS") || lineUPPER.StartsWith("PASS "))
{
if (pass >= 0)
{
currentPass.pass = pass;
if (basePass != null)
{
currentPass.Add(basePass.keywordLines);
}
shader.Add(currentPass);
}
else if (currentPass.keywordCount > 0)
{
basePass = currentPass;
}
currentPass = new StripShaderPass();
pass++;
continue;
}
//第一个注释符号 //的位置
int lineCommentIndex = CommentLineIndex(line);
//编辑器添加的语句行信息
EditorLineType editorLine = EditorLineType.NONE;
int editorStartIndex = -1;
int editorEndIndex = -1;
ParseEditorLineType(line, ref editorLine, ref editorStartIndex, ref editorEndIndex);
//该行是注释行 并且不是被主动编辑的 跳过
if (lineCommentIndex == 0 && editorLine == EditorLineType.NONE)
{
continue; // 跳过注释
}
//shader关键字语句行信息
ShaderLineType shaderLine = ShaderLineType.NONE;
int keyStartIndex = -1;
int keyEndIndex = -1;
ParseShaderLineType(line, ref shaderLine, ref keyStartIndex, ref keyEndIndex);
//并非是被程序编辑过的
if (editorLine == EditorLineType.NONE)
{
//如果是手写输入的关键字
if (IsInputShortcut(shaderLine))
{
keyStartIndex = Mathf.Max(0, keyStartIndex);
keyEndIndex = Mathf.Max(0, keyEndIndex);
//检查PRAGMA 关键字之后的字符串是否包含注释
int commentindex = CommentLineIndex(line, keyStartIndex + keyEndIndex);
if (commentindex < 0)
{
commentindex = line.Length;
}
int length = commentindex - (keyStartIndex + keyEndIndex);
//用空格分割 PRAGMA语句到//注释符号之间的语句
string[] splitedKeys = line.Substring(keyStartIndex + keyEndIndex, length).Split(separator, StringSplitOptions.RemoveEmptyEntries);
if (splitedKeys.Length > 0)
{
keywordLine = new StripKeywordLine();
//是剔除字段
bool isSkip = shaderLine == ShaderLineType.SKIP_VARIANTS;
currentPass.hasSkipKeyword = isSkip?isSkip:currentPass.hasSkipKeyword;
//添加手写关键字
for (int i = 0; i < splitedKeys.Length; i++)
{
splitedKeys[i] = splitedKeys[i].Trim();
StripKeyword keyword = keywordLine.GetKeyword(splitedKeys[i]);
if (keyword == null)
{
keyword = new StripKeyword(splitedKeys[i]);
}
keyword.enabled = true;
keyword.isSkip = isSkip;
keywordLine.Add(keyword);
}
keywordLine.editorLineType = editorLine;
keywordLine.shaderLineType = shaderLine;
currentPass.Add(keywordLine);
}
}
else //添加缩写marco的内置关键字
if (IsBuiltinShortcut(shaderLine))
{
keywordLine = new StripKeywordLine();
string[] buildinkeys = GetShortcutKeywords(shaderLine);
for (int i = 0; i < buildinkeys.Length; i++)
{
StripKeyword keyword = keywordLine.GetKeyword(buildinkeys[i]);
if (keyword == null)
{
keyword = new StripKeyword(buildinkeys[i]);
}
keyword.enabled = true;
keyword.isSkip = false;
keywordLine.Add(keyword);
}
keywordLine.editorLineType = editorLine;
keywordLine.shaderLineType = shaderLine;
currentPass.Add(keywordLine);
}
}
}
currentPass.pass = Mathf.Max(pass, 0);
if (basePass != null)
{
currentPass.Add(basePass.keywordLines);
}
shader.Add(currentPass);
shader.UpdateVariantCount();
}