C++ ITexture::GetNormalDecodeMode方法代码示例

void DrawLightmappedGeneric_DX9_Internal(CBaseVSShader *pShader, IMaterialVar** params, bool hasFlashlight, 
								 IShaderDynamicAPI *pShaderAPI, IShaderShadow* pShaderShadow, 
								 LightmappedGeneric_DX9_Vars_t &info,
								 CBasePerMaterialContextData **pContextDataPtr
								 )
{
	CLightmappedGeneric_DX9_Context *pContextData = reinterpret_cast< CLightmappedGeneric_DX9_Context *> ( *pContextDataPtr );
	if ( pShaderShadow || ( ! pContextData ) || pContextData->m_bMaterialVarsChanged  || hasFlashlight )
	{
		bool hasBaseTexture = params[info.m_nBaseTexture]->IsTexture();
		int nAlphaChannelTextureVar = hasBaseTexture ? (int)info.m_nBaseTexture : (int)info.m_nEnvmapMask;
		BlendType_t nBlendType = pShader->EvaluateBlendRequirements( nAlphaChannelTextureVar, hasBaseTexture );
		bool bIsAlphaTested = IS_FLAG_SET( MATERIAL_VAR_ALPHATEST ) != 0;
		bool bFullyOpaqueWithoutAlphaTest = (nBlendType != BT_BLENDADD) && (nBlendType != BT_BLEND) && (!hasFlashlight || IsX360()); //dest alpha is free for special use
		bool bFullyOpaque = bFullyOpaqueWithoutAlphaTest && !bIsAlphaTested;
		bool bNeedRegenStaticCmds = (! pContextData ) || pShaderShadow;

		if ( ! pContextData )								// make sure allocated
		{
			pContextData = new CLightmappedGeneric_DX9_Context;
			*pContextDataPtr = pContextData;
		}

		bool hasBump = ( params[info.m_nBumpmap]->IsTexture() ) && ( !g_pHardwareConfig->PreferReducedFillrate() );
		bool hasSSBump = hasBump && (info.m_nSelfShadowedBumpFlag != -1) &&	( params[info.m_nSelfShadowedBumpFlag]->GetIntValue() );
		bool hasBaseTexture2 = hasBaseTexture && params[info.m_nBaseTexture2]->IsTexture();
		bool hasLightWarpTexture = params[info.m_nLightWarpTexture]->IsTexture();
		bool hasBump2 = hasBump && params[info.m_nBumpmap2]->IsTexture();
		bool hasDetailTexture = params[info.m_nDetail]->IsTexture();
		bool hasSelfIllum = IS_FLAG_SET( MATERIAL_VAR_SELFILLUM );
		bool hasBumpMask = hasBump && hasBump2 && params[info.m_nBumpMask]->IsTexture() && !hasSelfIllum &&
			!hasDetailTexture && !hasBaseTexture2 && (params[info.m_nBaseTextureNoEnvmap]->GetIntValue() == 0);
		bool bHasBlendModulateTexture = 
			(info.m_nBlendModulateTexture != -1) &&
			(params[info.m_nBlendModulateTexture]->IsTexture() );
		bool hasNormalMapAlphaEnvmapMask = IS_FLAG_SET( MATERIAL_VAR_NORMALMAPALPHAENVMAPMASK );

        // Parallax cubemaps
        bool hasParallaxCorrection = params[info.m_nEnvmapParallaxObb1]->IsDefined();

		if ( hasFlashlight && !IsX360() )				
		{
			// !!speed!! do this in the caller so we don't build struct every time
			CBaseVSShader::DrawFlashlight_dx90_Vars_t vars;
			vars.m_bBump = hasBump;
			vars.m_nBumpmapVar = info.m_nBumpmap;
			vars.m_nBumpmapFrame = info.m_nBumpFrame;
			vars.m_nBumpTransform = info.m_nBumpTransform;
			vars.m_nFlashlightTextureVar = info.m_nFlashlightTexture;
			vars.m_nFlashlightTextureFrameVar = info.m_nFlashlightTextureFrame;
			vars.m_bLightmappedGeneric = true;
			vars.m_bWorldVertexTransition = hasBaseTexture2;
			vars.m_nBaseTexture2Var = info.m_nBaseTexture2;
			vars.m_nBaseTexture2FrameVar = info.m_nBaseTexture2Frame;
			vars.m_nBumpmap2Var = info.m_nBumpmap2;
			vars.m_nBumpmap2Frame = info.m_nBumpFrame2;
			vars.m_nBump2Transform = info.m_nBumpTransform2;
			vars.m_nAlphaTestReference = info.m_nAlphaTestReference;
			vars.m_bSSBump = hasSSBump;
			vars.m_nDetailVar = info.m_nDetail;
			vars.m_nDetailScale = info.m_nDetailScale;
			vars.m_nDetailTextureCombineMode = info.m_nDetailTextureCombineMode;
			vars.m_nDetailTextureBlendFactor = info.m_nDetailTextureBlendFactor;
			vars.m_nDetailTint = info.m_nDetailTint;

			if ( ( info.m_nSeamlessMappingScale != -1 ) )
				vars.m_fSeamlessScale = params[info.m_nSeamlessMappingScale]->GetFloatValue();
			else
				vars.m_fSeamlessScale = 0.0;
			pShader->DrawFlashlight_dx90( params, pShaderAPI, pShaderShadow, vars );
			return;
		}

		pContextData->m_bFullyOpaque = bFullyOpaque;
		pContextData->m_bFullyOpaqueWithoutAlphaTest = bFullyOpaqueWithoutAlphaTest;

		NormalDecodeMode_t nNormalDecodeMode = NORMAL_DECODE_NONE;
		if ( hasBump && g_pHardwareConfig->SupportsNormalMapCompression() && g_pHardwareConfig->SupportsPixelShaders_2_b() )
		{
			ITexture *pBumpTex = params[info.m_nBumpmap]->GetTextureValue();
			if ( pBumpTex )
			{
				nNormalDecodeMode = pBumpTex->GetNormalDecodeMode();

				if ( hasBump2 )			// Check encoding of secondary normal if there is oneg
				{
					ITexture *pBumpTex2 = params[info.m_nBumpmap]->GetTextureValue();
					if ( pBumpTex2 && ( pBumpTex2->GetNormalDecodeMode() != nNormalDecodeMode ) )
					{
						DevMsg("LightmappedGeneric: Primary and Secondary normal map compression formats don't match.  This is unsupported!\n");
						Assert(0);
					}
				}
			}
		}

		int nNormalMaskDecodeMode = 0;
		if ( hasBumpMask && g_pHardwareConfig->SupportsNormalMapCompression() && g_pHardwareConfig->SupportsPixelShaders_2_b() )
		{
			ITexture *pBumpMaskTex = params[info.m_nBumpMask]->GetTextureValue();
//.........这里部分代码省略.........

void DrawRefract_DX9( CBaseVSShader *pShader, IMaterialVar** params, IShaderDynamicAPI *pShaderAPI,
					 IShaderShadow* pShaderShadow, Refract_DX9_Vars_t &info, VertexCompressionType_t vertexCompression )
{
	bool bIsModel = IS_FLAG_SET( MATERIAL_VAR_MODEL );
	bool bHasEnvmap = params[info.m_nEnvmap]->IsTexture();
	bool bRefractTintTexture = params[info.m_nRefractTintTexture]->IsTexture();
	bool bFadeOutOnSilhouette = params[info.m_nFadeOutOnSilhouette]->GetIntValue() != 0;
	int blurAmount = params[info.m_nBlurAmount]->GetIntValue();
	bool bMasked = (params[info.m_nMasked]->GetIntValue() != 0);
	bool bSecondaryNormal = ( ( info.m_nNormalMap2 != -1 ) && ( params[info.m_nNormalMap2]->IsTexture() ) );
	bool bColorModulate = ( ( info.m_nVertexColorModulate != -1 ) && ( params[info.m_nVertexColorModulate]->GetIntValue() ) );
	bool bWriteZ = params[info.m_nNoWriteZ]->GetIntValue() == 0;

	if( blurAmount < 0 )
	{
		blurAmount = 0;
	}
	else if( blurAmount > MAXBLUR )
	{
		blurAmount = MAXBLUR;
	}

	BlendType_t nBlendType = pShader->EvaluateBlendRequirements( BASETEXTURE, true );
	bool bFullyOpaque = (nBlendType != BT_BLENDADD) && (nBlendType != BT_BLEND) && !IS_FLAG_SET(MATERIAL_VAR_ALPHATEST); //dest alpha is free for special use
	bFullyOpaque &= !bMasked;

	bool bTranslucentNormal = pShader->TextureIsTranslucent( info.m_nNormalMap, false );
	bFullyOpaque &= (! bTranslucentNormal );

	NormalDecodeMode_t nNormalDecodeMode = NORMAL_DECODE_NONE;
	if ( g_pHardwareConfig->SupportsNormalMapCompression() )
	{
		ITexture *pBumpTex = params[info.m_nNormalMap]->GetTextureValue();
		if ( pBumpTex )
		{
			nNormalDecodeMode = pBumpTex->GetNormalDecodeMode();

			if ( bSecondaryNormal )			// Check encoding of secondary normal if there is one
			{
				ITexture *pBumpTex2 = params[info.m_nNormalMap2]->GetTextureValue();
				if ( pBumpTex2 && ( pBumpTex2->GetNormalDecodeMode() != nNormalDecodeMode ) )
				{
					DevMsg("Refract: Primary and Secondary normal map compression formats don't match.  This is unsupported!\n");
					Assert(0);
				}
			}
		}
	}

	SHADOW_STATE
	{
		pShader->SetInitialShadowState( );

		pShaderShadow->EnableDepthWrites( bWriteZ );

		// Alpha test: FIXME: shouldn't this be handled in Shader_t::SetInitialShadowState
		pShaderShadow->EnableAlphaTest( IS_FLAG_SET(MATERIAL_VAR_ALPHATEST) );

		// If envmap is not specified, the alpha channel is the translucency
		// (If envmap *is* specified, alpha channel is the reflection amount)
		if ( params[info.m_nNormalMap]->IsTexture() && !bHasEnvmap )
		{
			pShader->SetDefaultBlendingShadowState( info.m_nNormalMap, false );
		}

		// source render target that contains the image that we are warping.
		pShaderShadow->EnableTexture( SHADER_SAMPLER2, true );
		pShaderShadow->EnableSRGBRead( SHADER_SAMPLER2, true );

		// normal map
		pShaderShadow->EnableTexture( SHADER_SAMPLER3, true );
		if ( nNormalDecodeMode == NORMAL_DECODE_ATI2N_ALPHA )
		{
			pShaderShadow->EnableTexture( SHADER_SAMPLER6, true );	// Normal map alpha, in the compressed normal case
		}

		if ( bSecondaryNormal )
		{
			pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );

			if ( nNormalDecodeMode == NORMAL_DECODE_ATI2N_ALPHA )
			{
				pShaderShadow->EnableTexture( SHADER_SAMPLER7, true );	// Secondary normal map alpha, in the compressed normal case
			}
		}

		if( bHasEnvmap )
		{
			// envmap
			pShaderShadow->EnableTexture( SHADER_SAMPLER4, true );
			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER4, true );
		}
		if( bRefractTintTexture )
		{
			// refract tint texture
			pShaderShadow->EnableTexture( SHADER_SAMPLER5, true );
			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER5, true );
		}

		pShaderShadow->EnableSRGBWrite( true );
//.........这里部分代码省略.........