Set the graphics API or platform for a shader

By default, Unity compiles all shader programs for each graphics API in the list for the current build target. To compile certain shader programs only for certain graphics APIs or platforms, for example if you use features that aren’t supported on all platforms, use a #pragma statement.

Use one of the following in the HLSLPROGRAM block of a shader:

• #pragma only_renderers to compile shaders only for a specific graphics API, for example #pragma only_renderers metal.
• #pragma exclude_renderers to exclude shaders from compilation for a specific graphics API, for example #pragma exclude_renderers metal.

You can pass multiple values by adding a space between each argument, for example #pragma only_renderers metal vulkan.

The supported values are:

Additional resources

• HLSL pragma directives reference
• HLSL pragma target command reference
• HLSL pragma require command reference
• SubShader tags in ShaderLab reference
• Pass tags in ShaderLab reference