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dcl_indexableTemp (sm4 - asm)

  • Article

Declares an indexable, temporary register.

dcl_indexableTemp xN[size], ComponentCount
Item Description
xN
 [in] A temporary indexable register.
  • N is an integer that identifies the register number.
  • [size] is an optional integer value. The number of elements in the register array.
ComponentCount
 [in] An optional integer value.The number of components in the register array.

A register contains enough space for a 32-bit four-component value; the number of elements in the array of temporary registers (indexable and non-indexable) cannot exceed 4096.

This instruction applies to the following shader stages:

Vertex Shader Geometry Shader Pixel Shader
x x x

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

Example

Here are some examples of the code generated for indexable registers.

dcl_indexableTemp x0[23], 2 ; // An indexable array of 23, 2-component, 32-bit elements
dcl_indexableTemp x1[16], 4 ; // An indexable array of 16, 4-component, 32-bit elements

Minimum Shader Model

This function is supported in the following shader models.

Shader Model Supported
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

Shader Model 4 Assembly (DirectX HLSL)