[util] Flag class

src/util/util_flags.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <type_traits>
+
+namespace dxvk {
+  
+  template<typename T>
+  class Flags {
+    
+  public:
+    
+    using IntType = std::underlying_type_t<T>;
+    
+    Flags() { }
+    
+    template<typename... Tx>
+    Flags(T f, Tx... fx) {
+      this->set(f, fx...);
+    }
+    
+    template<typename... Tx>
+    void set(Tx... fx) {
+      m_bits |= bits(fx...);
+    }
+    
+    template<typename... Tx>
+    void clr(Tx... fx) {
+      m_bits &= ~bits(fx...);
+    }
+    
+    template<typename... Tx>
+    bool any(Tx... fx) const {
+      return (m_bits & bits(fx...)) != 0;
+    }
+    
+    template<typename... Tx>
+    bool all(Tx... fx) const {
+      const IntType mask = bits(fx...);
+      return (m_bits & mask) == mask;
+    }
+    
+    bool test(T f) const {
+      return this->any(f);
+    }
+    
+    bool isClear() const {
+      return m_bits == 0;
+    }
+    
+    void clrAll() {
+      m_bits = 0;
+    }
+    
+  private:
+    
+    IntType m_bits = 0;
+    
+    static IntType bit(T f) {
+      return IntType(1) << static_cast<IntType>(f);
+    }
+    
+    template<typename... Tx>
+    static IntType bits(T f, Tx... fx) {
+      return bit(f) | bits(fx...);
+    }
+    
+    static IntType bits() {
+      return 0;
+    }
+    
+  };
+  
+}