ShaderLab: commands

This page contains information on using commands in the ShaderLab language.

ShaderLab commands fall into these categories:

• Commands for setting the render state on the GPU.
• Commands that create a Pass with a specific purpose.
• Legacy “fixed function style” commands that allow you to create shader programs without writing HLSL.

You can group ShaderLab commands together with the Category block.

Commands for setting render state

Use these commands within a Pass block to set the render state for that Pass, or within a SubShader block to set the render state for that SubShader and any Passes that it contains.

• AlphaToMask: sets the alpha-to-coverage mode.
• Blend: enables and configures alpha blending.
• BlendOp: sets the operation used by the Blend command.
• ColorMask: sets the color channel writing mask.
• Conservative: enables and disables conservative rasterization.
• Cull: sets the polygon culling mode.
• Offset: sets the polygon depth offset.
• Stencil: configures the stencil test, and what to write to the stencil buffer.
• ZClip: sets the depth clip mode.
• ZTest: sets the depth testing mode.
• ZWrite: sets the depth buffer writing mode.

Pass commands

Use these commands in a SubShader to define a Pass with a specific purpose.

• UsePass defines a Pass that imports the contents of a named Pass from another Shader object.
• GrabPass creates a Pass that grabs the contents of the screen into a texture, for use in a subsequent Pass.

Legacy “fixed function style” commands

These are documented on the page ShaderLab legacy functionality.