Renderer: rewrite render scheduling (#8683)

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

src/render/pass/RectPassElement.cpp

@@ -0,0 +1,29 @@
+#include "RectPassElement.hpp"
+#include "../OpenGL.hpp"
+
+CRectPassElement::CRectPassElement(const CRectPassElement::SRectData& data_) : data(data_) {
+    ;
+}
+
+void CRectPassElement::draw(const CRegion& damage) {
+    if (data.color.a == 1.F || !data.blur)
+        g_pHyprOpenGL->renderRectWithDamage(&data.box, data.color, damage, data.round);
+    else
+        g_pHyprOpenGL->renderRectWithBlur(&data.box, data.color, data.round, data.blurA, data.xray);
+}
+
+bool CRectPassElement::needsLiveBlur() {
+    return data.color.a < 1.F && !data.xray && data.blur;
+}
+
+bool CRectPassElement::needsPrecomputeBlur() {
+    return data.color.a < 1.F && data.xray && data.blur;
+}
+
+std::optional<CBox> CRectPassElement::boundingBox() {
+    return data.box.expand(-data.round);
+}
+
+CRegion CRectPassElement::opaqueRegion() {
+    return data.color.a >= 1.F ? *boundingBox() : CRegion{};
+}