如何从 ID3D11ShaderReflection 获取着色器类型(vertex/pixel 等)?

How could I get shader kind (vertex/pixel, etc.) from ID3D11ShaderReflection?

我想从着色器字节码中提取着色器程序类型信息。我先试了D3D11Reflect,发现了_D3D11_SHADER_DESC结构。但是我无法确定哪个字段存储程序类型信息...

如果您查看 d3d11shader.h header,您会看到它被编码到 16 位高位字的版本字段中:

typedef enum D3D11_SHADER_VERSION_TYPE
{
    D3D11_SHVER_PIXEL_SHADER    = 0,
    D3D11_SHVER_VERTEX_SHADER   = 1,
    D3D11_SHVER_GEOMETRY_SHADER = 2,

    // D3D11 Shaders
    D3D11_SHVER_HULL_SHADER     = 3,
    D3D11_SHVER_DOMAIN_SHADER   = 4,
    D3D11_SHVER_COMPUTE_SHADER  = 5,

    D3D11_SHVER_RESERVED0       = 0xFFF0,
} D3D11_SHADER_VERSION_TYPE;

#define D3D11_SHVER_GET_TYPE(_Version) \
(((_Version) >> 16) & 0xffff)
#define D3D11_SHVER_GET_MAJOR(_Version) \
(((_Version) >> 4) & 0xf)
#define D3D11_SHVER_GET_MINOR(_Version) \
(((_Version) >> 0) & 0xf)

typedef struct _D3D11_SHADER_DESC
{
    UINT    Version;  // Shader version
    ...
}  D3D11_SIGNATURE_PARAMETER_DESC;