dcl_immediateConstantBuffer (sm4 - asm)

Declares a shader immediate-constant buffer.

dcl_immediateConstantBuffer value(s)



[in] The buffer must contain at least one value, but not more than 4096 values.


A shader is allowed one immediate-constant buffer. An immediate-constant buffer is accessed just like a constant buffer with dynamic indexing.

This instruction applies to the following shader stages:

Vertex ShaderGeometry ShaderPixel Shader


This instruction is included to aid in debugging a shader in assembly; you cannot author a shader in assembly language using Shader Model 4.

Minimum Shader Model

This function is supported in the following shader models.

Shader ModelSupported
Shader Model 5 yes
Shader Model 4.1 yes
Shader Model 4 yes
Shader Model 3 (DirectX HLSL) no
Shader Model 2 (DirectX HLSL) no
Shader Model 1 (DirectX HLSL) no


Related topics

Shader Model 4 Assembly (DirectX HLSL)