D3DXGetPixelShaderProfile function

Returns the name of the highest high-level shader language (HLSL) profile supported by a given device.

Syntax

LPCSTR D3DXGetPixelShaderProfile(
  _In_ LPDIRECT3DDEVICE9 pDevice
);

Parameters

pDevice [in]

Type: LPDIRECT3DDEVICE9

Pointer to the device. See IDirect3DDevice9.

Return value

Type: LPCSTR

The HLSL profile name.

If the device does not support pixel shaders then the function returns NULL.

Remarks

A shader profile specifies the assembly shader version to use and the capabilities available to the HLSL compiler when compiling a shader. The following table lists the pixel shader profiles that are supported.

Shader Profile	Description
ps_1_1	Compile to ps_1_1 version.
ps_1_2	Compile to ps_1_2 version.
ps_1_3	Compile to ps_1_3 version.
ps_1_4	Compile to ps_1_4 version.
ps_2_0	Compile to ps_2_0 version.
ps_2_a	Same as the ps_2_0 profile, with the following additional capabilities available for the compiler to target: Number of Temporary Registers (r#) is greater than or equal to 22. Arbitrary source swizzle. Gradient instructions: dsx, dsy. Predication. No dependent texture read limit. No limit for the number of texture instructions.
ps_2_b	Same as the ps_2_0 profile, with the following additional capabilities available for the compiler to target: Number of Temporary Registers (r#) is greater than or equal to 32. No limit for the number of texture instructions.
ps_3_0	Compile to ps_3_0 version.

 

For more information about the differences between shader versions, see Pixel Shader Differences.

Requirements

Requirement	Value
Header	D3DX9Shader.h
Library	D3dx9.lib

See also

Shader Functions