Renderer: rewrite render scheduling (#8683)

This rewrites renderer scheduling. Occlusion is now unified in a new Pass type.

src/render/pass/SurfacePassElement.hpp

@@ -0,0 +1,82 @@
+#pragma once
+#include "PassElement.hpp"
+#include <optional>
+
+class CWLSurfaceResource;
+class CTexture;
+class CSyncTimeline;
+
+class CSurfacePassElement : public IPassElement {
+  public:
+    struct SRenderData {
+        PHLMONITORREF pMonitor;
+        timespec*     when = nullptr;
+        Vector2D      pos, localPos;
+
+        // for iters
+        void*                  data        = nullptr;
+        SP<CWLSurfaceResource> surface     = nullptr;
+        SP<CTexture>           texture     = nullptr;
+        bool                   mainSurface = true;
+        double                 w = 0, h = 0;
+
+        // for rounding
+        bool dontRound = true;
+
+        // for fade
+        float fadeAlpha = 1.f;
+
+        // for alpha settings
+        float alpha = 1.f;
+
+        // for decorations (border)
+        bool decorate = false;
+
+        // for custom round values
+        int rounding = -1; // -1 means not set
+
+        // for blurring
+        bool blur                  = false;
+        bool blockBlurOptimization = false;
+
+        // only for windows, not popups
+        bool squishOversized = true;
+
+        // for calculating UV
+        PHLWINDOW pWindow;
+        PHLLS     pLS;
+
+        bool      popup = false;
+
+        // counts how many surfaces this pass has rendered
+        int      surfaceCounter = 0;
+
+        CBox     clipBox = {}; // scaled coordinates
+
+        uint32_t discardMode    = 0;
+        float    discardOpacity = 0.f;
+
+        bool     useNearestNeighbor = false;
+
+        bool     flipEndFrame = false;
+    };
+
+    CSurfacePassElement(const SRenderData& data);
+    virtual ~CSurfacePassElement() = default;
+
+    virtual void                draw(const CRegion& damage);
+    virtual bool                needsLiveBlur();
+    virtual bool                needsPrecomputeBlur();
+    virtual std::optional<CBox> boundingBox();
+    virtual CRegion             opaqueRegion();
+    virtual void                discard();
+
+    virtual const char*         passName() {
+        return "CSurfacePassElement";
+    }
+
+  private:
+    SRenderData data;
+
+    CBox        getTexBox();
+};