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HLSL pragma require command reference

Reference for all the valid values for the pragma require directive.
Read time 2 minutesLast updated 7 days ago
Here are all the valid values for the 
#pragma require
directive.

Value

Description

interpolators10
At least 10 vertex-to-fragment interpolators (“varyings”) are available.
interpolators15
At least 15 vertex-to-fragment interpolators (“varyings”) are available.

Note: Internally, this also automatically adds 
integers
to the list of requirements.
interpolators32
At least 32 vertex-to-fragment interpolators (“varyings”) are available.
integers
Integers are a supported data type, including bit/shift operations.

Note: Internally, this also automatically adds 
interpolators15
to the list of requirements.
mrt4
At least 4 render targets are supported.
mrt8
At least 8 render targets are supported.
derivatives
Pixel shader derivative instructions (ddx/ddy) are supported.
samplelod
Explicit texture LOD sampling (tex2Dlod / SampleLevel) is supported.
fragcoord
Pixel location (XY on screen, ZW depth in clip space) input in pixel shader is supported.
2darray
2D texture arrays are a supported data type.
cubearray
Cubemap arrays are a supported data type.
instancing
SV_InstanceID input system value is supported.
geometry
Geometry shader stages are supported.
compute
Compute shaders, structured buffers, and atomic operations are supported.
randomwrite
or 
uav
“Random write” (UAV) textures are supported.
tesshw
Hardware tessellation is supported, but not necessarily tessellation (hull/domain) shader stages. For example, Metal supports tessellation, but not hull or domain stages.
tessellation
Tessellation (hull/domain) shader stages are supported.
msaatex
The ability to access multi-sampled textures (Texture2DMS in HLSL) is supported.
sparsetex
Sparse textures with residency info (“Tier2” support in DirectX terms; 
CheckAccessFullyMapped
HLSL function).
framebufferfetch
or 
fbfetch
The ability to get the current framebuffer from GPU memory is supported. This process is sometimes called framebuffer fetch. For more information, refer to Writing shaders for different graphics APIs.
setrtarrayindexfromanyshader
Setting the render target array index from any shader stage (not just the geometry shader stage) is supported.
inlineraytracing
Inline ray tracing is supported, so you can generate ray queries in the rasterization and compute stages of a shader. Refer to SystemInfo.supportsInlineRayTracing for more information.