This is my example shader: (play with index of refraction to achieve a different ratio of refraction to reflection depending on the angle of viewing) And this is the resulting water: To separate the refraction and reflection parts, you use a standard fresnel factor connected to a mix shader node. Light travels at a different speed in air than in water. This took about a week or so since I'm new to shader graph. The refraction shaders are just the light shaders re-written with a clip plane. This is a tutorial on creating a refractive shader by using the color scene node which gets the camera texture, this method is good for things like rivers because … Different materials have different refraction amount, and the angle and effect is more pronounced. Refraction has one more adjustable parameter than reflection. Water refraction and normal mapping is still WIP. Vertex Shader A vertex shader is used to approximate sine and cosine waves to generate rippling water geometry as well as perturbing the tangent space vectors per vertex. It is the ratio of the refraction indexes of two mediums. As the refraction renders the scene normally but only renders what is underneath the water we use the clip plane with the light shader to achieve this effect. Because refraction is in essence a distortion of background behind a refracting object it makes sense to focus on creating a convincing distortion shader. For example when it passes through water in a glass, it slows down and changes direction causing a distorted appearance to anyone looking through the glass. Without refraction, her foot would not be visible. In simple terms light bends and changes direction as it goes from one medium to another. Water is such a complex material, with specific features like reflection and refraction and building a water shader in 3d programs is not a trivial task. There are many well-known techniques for simulating light reflection (such as There is a good mathematical representation of refraction Snell’s law which can be implemented to get physically accurate directional vectors … The original MGE XE water shader would have let you ... - added chromatic abberation effect to refraction - reworked water colors - made normals stronger - lots of little tweaks here and there ===== =Credits= ===== vtastek for his peak fix, improved caustics, optimized sewer waves, bits and pieces of code here and there and general help. Shaders are one of the best ways to completely overhaul Minecraft's gameplay experience by tweaking light, fog, shadows, water, and even trees and grass. With new shaders … Rippling Reflective and Refractive Water Figure 3 – Example of a refraction map created by drawing only the geometry below the water’s surface. Chapter 19. 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