Version: Unity 6.7 Alpha (6000.7)
Language : English
Include a shader pass with the UsePass command
Introduction to HLSL shader programs

Writing HLSL shader programs

Write High-Level Shader Language (HLSL) vertex and fragment shader programs inside a Pass block in a custom ShaderLab shader.

Page Description
Introduction to HLSL shader programs Learn about writing shader programs in HLSL in Unity, and vertex and fragment shaders.
Add an HLSL shader program Use the HLSLPROGRAM directive to add a shader program to a shader pass.
Reuse HLSL code Include or duplicate HLSL in different places, or share #pragma directives across different shaders.
Input data into HLSL Create a struct that declares shader variables and connects them to the vertex data of the mesh.
Sample a texture in HLSL Declare and sample a texture in HLSL using a sampler.
Writing HLSL for different graphics APIs Write HLSL to take into account how graphics rendering differs between different graphics APIs.
Use 16-bit precision in shaders Use 16-bit precision in GPU calculations, so shaders use less memory, bandwidth, and power, and calculations are faster.
Pass information to the shader compiler Use the #define, #pragma, and #define_for_platform_compiler directives to pass information to the shader compiler.

Additional resources

Include a shader pass with the UsePass command
Introduction to HLSL shader programs