260 lines
7.0 KiB
C++
260 lines
7.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: D3DX command implementation.
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#include "shadercompile.h"
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#include "d3dxfxc.h"
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#include "cmdsink.h"
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// Required to compile using D3DX* routines in the same process
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#include <d3dx9shader.h>
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#include "dx_proxy/dx_proxy.h"
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#include <tier0/icommandline.h>
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#include <tier1/strtools.h>
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#define D3DXSHADER_MICROCODE_BACKEND_OLD_DEPRECATED ( 1 << 25 )
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namespace InterceptFxc
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{
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// The command that is intercepted by this namespace routines
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static const char *s_pszCommand = "fxc.exe ";
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static size_t s_uCommandLen = strlen( s_pszCommand );
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namespace Private
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{
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//
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// Response implementation
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//
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class CResponse : public CmdSink::IResponse
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{
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public:
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explicit CResponse( LPD3DXBUFFER pShader, LPD3DXBUFFER pListing, HRESULT hr );
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~CResponse( void );
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public:
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virtual bool Succeeded( void ) { return m_pShader && (m_hr == D3D_OK); }
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virtual size_t GetResultBufferLen( void ) { return ( Succeeded() ? m_pShader->GetBufferSize() : 0 ); }
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virtual const void * GetResultBuffer( void ) { return ( Succeeded() ? m_pShader->GetBufferPointer() : NULL ); }
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virtual const char * GetListing( void ) { return (const char *) ( m_pListing ? m_pListing->GetBufferPointer() : NULL ); }
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protected:
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LPD3DXBUFFER m_pShader;
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LPD3DXBUFFER m_pListing;
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HRESULT m_hr;
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};
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CResponse::CResponse( LPD3DXBUFFER pShader, LPD3DXBUFFER pListing, HRESULT hr ) :
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m_pShader(pShader),
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m_pListing(pListing),
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m_hr(hr)
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{
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NULL;
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}
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CResponse::~CResponse( void )
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{
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if ( m_pShader )
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m_pShader->Release();
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if ( m_pListing )
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m_pListing->Release();
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}
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//
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// Perform a fast shader file compilation.
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// TODO: avoid writing "shader.o" and "output.txt" files to avoid extra filesystem access.
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//
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// @param pszFilename the filename to compile (e.g. "debugdrawenvmapmask_vs20.fxc")
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// @param pMacros null-terminated array of macro-defines
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// @param pszModel shader model for compilation
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//
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void FastShaderCompile( const char *pszFilename, const D3DXMACRO *pMacros, const char *pszModel, CmdSink::IResponse **ppResponse )
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{
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LPD3DXBUFFER pShader = NULL; // NOTE: Must release the COM interface later
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LPD3DXBUFFER pErrorMessages = NULL; // NOTE: Must release COM interface later
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// DxProxyModule
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static DxProxyModule s_dxModule;
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// X360TEMP: This needs to be moved to an external semantic (or fixed)
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bool bIsX360 = false;
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for ( int i=0; ;i++ )
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{
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if ( !pMacros[i].Name )
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{
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break;
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}
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if ( V_stristr( pMacros[i].Name, "_X360" ) && atoi( pMacros[i].Definition ) )
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{
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bIsX360 = true;
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break;
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}
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}
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HRESULT hr = s_dxModule.D3DXCompileShaderFromFile( pszFilename, pMacros, NULL /* LPD3DXINCLUDE */,
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"main", pszModel, 0, &pShader, &pErrorMessages,
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NULL /* LPD3DXCONSTANTTABLE *ppConstantTable */ );
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if ( ppResponse )
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{
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*ppResponse = new CResponse( pShader, pErrorMessages, hr );
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}
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else
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{
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if ( pShader )
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{
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pShader->Release();
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}
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if ( pErrorMessages )
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{
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pErrorMessages->Release();
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}
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}
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}
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}; // namespace Private
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//
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// Completely mimic the behaviour of "fxc.exe" in the specific cases related
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// to shader compilations.
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//
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// @param pCommand the command in form
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// "fxc.exe /DSHADERCOMBO=1 /DTOTALSHADERCOMBOS=4 /DCENTROIDMASK=0 /DNUMDYNAMICCOMBOS=4 /DFLAGS=0x0 /DNUM_BONES=1 /Dmain=main /Emain /Tvs_2_0 /DSHADER_MODEL_VS_2_0=1 /D_X360=1 /nologo /Foshader.o debugdrawenvmapmask_vs20.fxc>output.txt 2>&1"
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//
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void ExecuteCommand( const char *pCommand, CmdSink::IResponse **ppResponse )
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{
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// Expect that the command passed is exactly "fxc.exe"
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Assert( !strncmp( pCommand, s_pszCommand, s_uCommandLen ) );
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pCommand += s_uCommandLen;
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// A duplicate portion of memory for modifications
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void *bufEditableCommand = alloca( strlen( pCommand ) + 1 );
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char *pEditableCommand = strcpy( (char *) bufEditableCommand, pCommand );
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// Macros to be defined for D3DX
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CUtlVector<D3DXMACRO> macros;
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// Shader model (determined when parsing "/D" flags)
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const char *pszShaderModel = NULL;
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// Iterate over the command line and find all "/D...=..." settings
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for ( char *pszFlag = pEditableCommand;
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( pszFlag = strstr( pszFlag, "/D" ) ) != NULL;
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/* advance inside */ )
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{
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// Make sure this is a command-line flag (basic check for preceding space)
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if ( pszFlag > pEditableCommand &&
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pszFlag[-1] &&
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' ' != pszFlag[-1] )
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{
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++ pszFlag;
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continue;
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}
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// Name is immediately after "/D"
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char *pszFlagName = pszFlag + 2; // 2 = length of "/D"
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// Value will be determined later
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char *pszValue = "";
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if ( char *pchEq = strchr( pszFlag, '=' ) )
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{
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// Value is after '=' sign
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*pchEq = 0;
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pszValue = pchEq + 1;
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pszFlag = pszValue;
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}
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if ( char *pchSpace = strchr( pszFlag, ' ' ) )
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{
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// Space is designating the end of the flag
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*pchSpace = 0;
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pszFlag = pchSpace + 1;
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}
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else
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{
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// Reached end of command line
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pszFlag = "";
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}
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// Shader model extraction
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if ( !strncmp(pszFlagName, "SHADER_MODEL_", 13) )
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{
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pszShaderModel = pszFlagName + 13;
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}
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// Add the macro definition to the macros array
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int iMacroIdx = macros.AddToTail();
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D3DXMACRO &m = macros[iMacroIdx];
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// Fill the macro data
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m.Name = pszFlagName;
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m.Definition = pszValue;
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}
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// Add a NULL-terminator
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{
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D3DXMACRO nullTerminatorMacro = { NULL, NULL };
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macros.AddToTail( nullTerminatorMacro );
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}
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// Convert shader model to lowercase
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char chShaderModel[20] = {0};
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if(pszShaderModel)
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{
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Q_strncpy( chShaderModel, pszShaderModel, sizeof(chShaderModel) - 1 );
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}
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Q_strlower( chShaderModel );
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// Determine the file name (at the end of the command line before redirection)
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char const *pszFilename = "";
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if ( const char *pchCmdRedirect = strstr( pCommand, ">output.txt " ) )
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{
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size_t uCmdEndOffset = ( pchCmdRedirect - pCommand );
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pEditableCommand[uCmdEndOffset] = 0;
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pszFilename = &pEditableCommand[uCmdEndOffset];
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while ( pszFilename > pEditableCommand &&
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pszFilename[-1] &&
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' ' != pszFilename[-1] )
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{
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-- pszFilename;
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}
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}
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// Compile the stuff
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Private::FastShaderCompile( pszFilename, macros.Base(), chShaderModel, ppResponse );
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}
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bool TryExecuteCommand( const char *pCommand, CmdSink::IResponse **ppResponse )
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{
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{
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static bool s_bNoIntercept = ( CommandLine()->FindParm("-nointercept") != 0 );
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static int s_dummy = ( Msg( s_bNoIntercept ?
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"[shadercompile] Using old slow technique - runs 'fxc.exe'.\n" :
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"[shadercompile] Using new faster Vitaliy's implementation.\n" ), 1 );
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if ( !s_bNoIntercept && !strncmp(pCommand, InterceptFxc::s_pszCommand, InterceptFxc::s_uCommandLen) )
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{
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// Trap "fxc.exe" so that we did not spawn extra process every time
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InterceptFxc::ExecuteCommand( pCommand, ppResponse );
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return true;
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}
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}
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return false;
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}
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}; // namespace InterceptFxc
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