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tutorial_shader_materials.md

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+# Shader Materials
+
+## Introduction
+
+For the most common cases, [Fixed Materials](tutorial_fixed_materials) are enough to create the desired textures or look and feel. Shader materials are a step beyond that adds a huge amount of flexibility. With them, it is possible to:
+
+*  Create procedural texures.
+*  Create complex texture blendings.
+*  Create animated materials, or materials that change with time.
+*  Create refractive effects or other advanced effects.
+*  Create special lighting shaders for more exotic materials.
+*  Animate vertices, like tree leaves or grass.
+*  And much more!
+
+Traditionally, most engines will ask you to learn GLSL, HLSL or CG, which are pretty complex for the skillset of most artists. Godot uses a simplified version of a shader language that will detect errors as you type, so you can see your edited shaders in real-time. Additionally, it is possible to edit shaders using a visual graph editor (NOTE: Currently disabled! work in progress!).
+
+## Creating a ShaderMaterial
+