Realtime Waterfall Shader

This material provides a semi-realistic waterfall shader designed primarily for the EEVEE render engine. It includes both a 3D and a 2D version to suit different scene requirements. The 3D version utilizes a specific form of shader displacement optimized for EEVEE, allowing for dynamic real-time waterfalls without deforming the underlying geometry. Because this version relies heavily on transparency layers, it is restricted to EEVEE. The 2D version is compatible with both EEVEE and Cycles. The shader has been updated to support EEVEE Next.