renderpass: use unique ptr instead of shared ptr

lets use unique ptrs instead of refcounting shared ptr when its not
needed, use rvalue reference to construct in vector directly.

src/render/pass/ClearPassElement.hpp

@@ -22,4 +22,4 @@ class CClearPassElement : public IPassElement {
 
   private:
     SClearData m_data;
-};
+};

src/render/pass/Pass.cpp

@@ -18,8 +18,8 @@ bool CRenderPass::single() const {
     return m_passElements.size() == 1;
 }
 
-void CRenderPass::add(SP<IPassElement> el) {
-    m_passElements.emplace_back(makeShared<SPassElementData>(CRegion{}, el));
+void CRenderPass::add(UP<IPassElement>&& el) {
+    m_passElements.emplace_back(makeUnique<SPassElementData>(CRegion{}, std::move(el)));
 }
 
 void CRenderPass::simplify() {

src/render/pass/Pass.hpp

@@ -11,7 +11,7 @@ class CRenderPass {
     bool    empty() const;
     bool    single() const;
 
-    void    add(SP<IPassElement> elem);
+    void    add(UP<IPassElement>&& elem);
     void    clear();
     void    removeAllOfType(const std::string& type);
 
@@ -24,11 +24,11 @@ class CRenderPass {
 
     struct SPassElementData {
         CRegion          elementDamage;
-        SP<IPassElement> element;
+        UP<IPassElement> element;
         bool             discard = false;
     };
 
-    std::vector<SP<SPassElementData>> m_passElements;
+    std::vector<UP<SPassElementData>> m_passElements;
 
     void                              simplify();
     float                             oneBlurRadius();

src/render/pass/ShadowPassElement.cpp

@@ -16,4 +16,4 @@ bool CShadowPassElement::needsLiveBlur() {
 
 bool CShadowPassElement::needsPrecomputeBlur() {
     return false;
-}
+}

src/render/pass/ShadowPassElement.hpp

@@ -23,4 +23,4 @@ class CShadowPassElement : public IPassElement {
 
   private:
     SShadowData m_data;
-};
+};