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D3DDisassemble11Trace function (d3d11shadertracing.h)

  • Article

Disassembles a section of compiled Microsoft High Level Shader Language (HLSL) code that is specified by shader trace steps.

Syntax

HRESULT D3DDisassemble11Trace(
  [in]  LPCVOID           pSrcData,
  [in]  SIZE_T            SrcDataSize,
  [in]  ID3D11ShaderTrace *pTrace,
  [in]  UINT              StartStep,
  [in]  UINT              NumSteps,
  [in]  UINT              Flags,
  [out] ID3D10Blob        **ppDisassembly
);

Parameters

[in] pSrcData

Type: LPCVOID

A pointer to compiled shader data.

[in] SrcDataSize

Type: SIZE_T

The size, in bytes, of the block of memory that pSrcData points to.

[in] pTrace

Type: ID3D11ShaderTrace*

A pointer to the ID3D11ShaderTrace interface for the shader trace information object.

[in] StartStep

Type: UINT

The number of the step in the trace from which D3DDisassemble11Trace starts the disassembly.

[in] NumSteps

Type: UINT

The number of trace steps to disassemble.

[in] Flags

Type: UINT

A combination of zero or more of the following flags that are combined by using a bitwise OR operation. The resulting value specifies how D3DDisassemble11Trace disassembles the compiled shader data.

Flag Description
D3D_DISASM_ENABLE_COLOR_CODE (0x01) Enable the output of color codes.
D3D_DISASM_ENABLE_DEFAULT_VALUE_PRINTS (0x02) Enable the output of default values.
D3D_DISASM_ENABLE_INSTRUCTION_NUMBERING (0x04) Enable instruction numbering.
D3D_DISASM_ENABLE_INSTRUCTION_CYCLE (0x08) No effect.
D3D_DISASM_DISABLE_DEBUG_INFO (0x10) Disable the output of debug information.
D3D_DISASM_ENABLE_INSTRUCTION_OFFSET (0x20) Enable the output of instruction offsets.
D3D_DISASM_INSTRUCTION_ONLY (0x40) Enable the output of the instruction cycle per step in D3DDisassemble11Trace. This flag is similar to the D3D_DISASM_ENABLE_INSTRUCTION_NUMBERING and D3D_DISASM_ENABLE_INSTRUCTION_OFFSET flags.

This flag has no effect in the D3DDisassembleRegion function. Cycle information comes from the trace; therefore, cycle information is available only in the trace disassembly.

[out] ppDisassembly

Type: ID3D10Blob**

A pointer to a buffer that receives the ID3DBlob interface that accesses the disassembled HLSL code.

Return value

Type: HRESULT

This method returns an HRESULT error code.

Remarks

D3DDisassemble11Trace walks the steps of a shader trace and outputs appropriate disassembly for each step that is based on the step's instruction index. The disassembly is annotated with register-value information from the trace. The behavior of D3DDisassemble11Trace differs from D3DDisassemble in that instead of the static disassembly of a compiled shader that D3DDisassemble performs, D3DDisassemble11Trace provides an execution trace that is based on the shader trace information.

Requirements

Requirement Value
Minimum supported client Windows 8 [desktop apps | UWP apps]
Minimum supported server Windows Server 2012 [desktop apps | UWP apps]
Target Platform Windows
Header d3d11shadertracing.h
DLL D3D11SDKLayers.dll; D3D11_1SDKLayers.dll; D3D11_2SDKLayers.dll

See also

Shader Functions