dcl_globalFlags (sm4 - asm)

Declares shader global flags.

dcl_globalFlags flags

flags

[in] A global shader flag. There is currently one flag defined.

REFACTORING_ALLOWED - Permits the driver to reorder arithmetic operations for optimization, as shown here.

// Original code
a = b*c + b*d + b*e + b*f

// Reordered code
a = b*(c + d + e + f)
// or 
a = dot4((b,b,b,b), (c,d,e,f))

Note

Reordering arithmetic operations may generate different results.

This optional 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.

Minimum Shader Model

This function is supported in the following shader models.