[dxbc] More sophisticated component mask/swizzle classes

src/dxbc/dxbc_type.cpp

@@ -0,0 +1,25 @@
+#include "dxbc_type.h"
+
+namespace dxvk {
+  
+  DxbcComponentSwizzle DxbcComponentSwizzle::extract(DxbcComponentMask mask) const {
+    DxbcComponentSwizzle result;
+    
+    uint32_t j = 0;
+    for (uint32_t i = 0; i < m_components.size(); i++) {
+      if (mask.test(i))
+        result[j++] = m_components.at(i);
+    }
+    
+    return result;
+  }
+  
+  
+  DxbcComponentMask DxbcComponentSwizzle::mask(uint32_t n) const {
+    DxbcComponentMask mask;
+    for (uint32_t i = 0; i < n; i++)
+      mask.set(m_components.at(i));
+    return mask;
+  }
+  
+}