| title | description | ms.assetid | ms.topic | ms.date | topic_type | api_name | api_type | api_location | |
|---|---|---|---|---|---|---|---|---|---|
dcl_globalFlags (sm4 - asm) |
dcl\_globalFlags (sm4 - asm) |
7289db9e-f0cd-4849-854f-34aa38ec2c2d |
reference |
05/31/2018 |
|
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.
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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.
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 |