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materialsystem/shaderapidx9/dx9asmtogl.h

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+//------------------------------------------------------------------------------
+// DX9AsmToGL.h
+//------------------------------------------------------------------------------
+
+#ifndef DX9_ASM_TO_GL_H
+#define DX9_ASM_TO_GL_H
+
+#define DISASM_OK      0
+#define DISASM_ERROR   1
+
+#define MAX_SHADER_CONSTANTS	512
+
+// option bits
+#define D3DToGL_OptionUseEnvParams		0x01
+#define D3DToGL_OptionDoFixupZ			0x02			// add insts to put Z in the right interval for GL
+#define D3DToGL_OptionDoFixupY			0x04			// add insts to flip the Y over for GL
+#define D3DToGL_OptionDoUserClipPlanes	0x08			// include OPTION vertex_program_2 and append DP4's to write into oCLP[0] and oCLP[1]
+#define D3DToGL_OptionSpew			0x80000000
+
+class D3DToGL_ASM
+{
+private:
+	// Pointers for dwToken stream management
+	uint32* m_pdwBaseToken;
+	uint32* m_pdwNextToken;
+
+	// Vertex shader or pixel shader, and version (necessary because some opcodes alias)
+	bool m_bVertexShader;
+	uint32 m_dwMinorVersion;
+	uint32 m_dwMajorVersion;
+	
+	// Option flags
+	bool	m_bUseEnvParams;		// set D3DToGL_OptionUseEnvParams in 'options' to use
+	bool	m_bDoFixupZ;			// set D3DToGL_OptionDoFixupZ
+	bool	m_bDoFixupY;			// set D3DToGL_OptionDoFixupZ
+	bool	m_bDoUserClipPlanes;	// set D3DToGL_OptionDoUserClipPlanes
+	bool	m_bSpew;				// set D3DToGL_OptionSpew
+
+	// Various scratch temps needed to handle mis-matches in instruction sets between D3D and OpenGL
+	bool m_bNeedsD2AddTemp;
+	bool m_bNeedsNRMTemp;
+	bool m_bDeclareAddressReg;
+	bool m_bNeedsLerpTemp;
+	bool m_bNeedsSinCosDeclarations;
+
+	// Keep track of which vs outputs are used so we can declare them
+	bool m_bDeclareVSOPos;
+	bool m_bDeclareVSOFog;
+	uint32 m_dwTexCoordOutMask;
+
+	// Keep track of which temps are used so they can be declared
+	uint32 m_dwTempUsageMask;
+	bool m_bOutputColorRegister[2];
+	bool m_bOutputDepthRegister;
+
+	// Track constants so we know how to declare them
+	bool m_bConstantRegisterReferenced[MAX_SHADER_CONSTANTS];
+	bool m_bConstantRegisterDefined[MAX_SHADER_CONSTANTS];
+
+	// Track sampler types when declared so we can properly decorate TEX instructions
+	uint32 m_dwSamplerTypes[32];
+
+	// Track shadow sampler usage
+	int m_nShadowDepthSampler;
+	bool m_bDeclareShadowOption;
+
+	// Track attribute references
+	// init to 0xFFFFFFFF (unhit)
+	// index by (dwRegToken & D3DSP_REGNUM_MASK) in VS DCL insns
+	// fill with (usage<<4) | (usage index).
+	uint32 m_dwAttribMap[16];	
+
+	// GLSL does indentation for readability
+	int m_NumIndentTabs;
+
+	// Utilities to aid in decoding token stream
+	uint32 GetNextToken( void );
+	void SkipTokens( uint32 numToSkip );
+	uint32 Opcode( uint32 dwToken );
+	uint32 OpcodeSpecificData( uint32 dwToken );
+	uint32 TextureType ( uint32 dwToken );
+	uint32 GetRegType( uint32 dwRegToken );
+
+	// Utilities for decoding tokens in to strings according to ASM syntax
+	void PrintOpcode( uint32 inst, char* buff, int nBufLen );
+	void PrintUsageAndIndexToString( uint32 dwToken, char* strUsageUsageIndexName, int nBufLen, bool bGLSL );
+	void PrintParameterToString ( uint32 dwToken, uint32 dwSourceOrDest, char *pRegisterName, int nBufLen, bool bGLSL, int *pARLDestReg );
+	void InsertMoveFromAddressRegister( char *pCode, int nCodeSize, int nARLComp0, int nARLComp1, int nARLComp2 );
+	void InsertMoveInstruction( char *pCode, int nCodeSize, int nARLComponent );
+	void FlagIndirectRegister( uint32 dwToken, int *pARLDestReg );
+
+	// Utilities for decoding tokens in to strings according to GLSL syntax
+	void OpenIntrinsic( uint32 inst, char* buff, int nBufLen );
+	void PrintIndentation( char *pBuf, int nBufLen );
+
+public:
+	int TranslateShader( uint32* code, char *pDisassembledCode, int nBufLen, bool *bVertexShader, uint32 options, int32 nShadowDepthSampler, char *debugLabel );
+};
+
+
+#endif // DX9_ASM_TO_GL_H