D3D11_FEATURE_DATA_DOUBLES Structure

Describes double data type support in the current graphics driver.

Syntax

typedef struct D3D11_FEATURE_DATA_DOUBLES {
    BOOL DoublePrecisionFloatShaderOps;
} D3D11_FEATURE_DATA_DOUBLES;  

Members

DoublePrecisionFloatShaderOps

Specifies whether double types are allowed. If TRUE, double types are allowed; otherwise FALSE. The runtime must set DoublePrecisionFloatShaderOps to TRUE in order for you to use any HLSL shader that is compiled with a double type.

Remarks

If the runtime sets DoublePrecisionFloatShaderOps to TRUE, the hardware and driver support the following Shader Model 5 instructions:

• dadd
• dmax
• dmin
• dmul
• deq
• dge
• dlt
• dne
• dmov
• dmovc
• dtof
• ftod

Note

If DoublePrecisionFloatShaderOps is TRUE, the hardware and driver do not necessarily support double-precision division.

Requirements

Header: Declared in d3d11_x.h (d3d11.h on other Windows platforms).