remove layer usage to reduce vram consumption

Plugins/ZShell/Blobs/blobmaterial.hpp

@@ -32,12 +32,17 @@ class BlobMaterial : public QSGMaterial {
 	float m_paddedH = 0;
 	float m_smoothFactor = 32.0f;
 	int m_rectCount = 0;
+	// -2 means no owner test: the single group draw writes every pixel it covers.
 	int m_myIndex = -2;
 	QColor m_color{0x44, 0x88, 0xff};
 	int m_hasInverted = 0;
 	float m_invertedRadius = 0;
 	float m_invertedOuter[4] = {};
 	float m_invertedInner[4] = {};
+	// Phase 2: shadow around the material edges. Matches the uniform block, which
+	// puts these after rectData.
+	float m_shadowRadius = 0.0f;
+	float m_shadowColor[4] = {0.0f, 0.0f, 0.0f, 0.5f};
 	BlobRectData m_rects[16] = {};
 };