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1 files changed, 231 insertions, 0 deletions

diff --git a/materialsystem/stdshaders/modulate_dx8.cpp b/materialsystem/stdshaders/modulate_dx8.cpp
new file mode 100644
index 0000000..7a3b2d8
--- /dev/null
+++ b/materialsystem/stdshaders/modulate_dx8.cpp
@@ -0,0 +1,231 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=====================================================================================//
+
+#include "BaseVSShader.h"
+#include "unlitgeneric_vs11.inc"
+#include "cloak_blended_pass_helper.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+DEFINE_FALLBACK_SHADER( Modulate, Modulate_DX8 )
+
+BEGIN_VS_SHADER( Modulate_DX8,
+			  "Help for Modulate" )
+
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( WRITEZ, SHADER_PARAM_TYPE_BOOL, "0", "Forces z to be written if set" )
+		SHADER_PARAM( MOD2X, SHADER_PARAM_TYPE_BOOL, "0", "forces a 2x modulate so that you can brighten and darken things" )
+
+		// Cloak Pass
+		SHADER_PARAM( CLOAKPASSENABLED, SHADER_PARAM_TYPE_BOOL, "0", "Enables cloak render in a second pass" )
+		SHADER_PARAM( CLOAKFACTOR, SHADER_PARAM_TYPE_FLOAT, "0.0", "" )
+		SHADER_PARAM( CLOAKCOLORTINT, SHADER_PARAM_TYPE_COLOR, "[1 1 1]", "Cloak color tint" )
+		SHADER_PARAM( REFRACTAMOUNT, SHADER_PARAM_TYPE_FLOAT, "2", "" )
+	END_SHADER_PARAMS
+
+	SHADER_FALLBACK
+	{	
+		if ( IsPC() && !g_pHardwareConfig->SupportsVertexAndPixelShaders() )
+			return "Modulate_DX6";
+		return 0;
+	}
+
+	// Cloak Pass
+	void SetupVarsCloakBlendedPass( CloakBlendedPassVars_t &info )
+	{
+		info.m_nCloakFactor = CLOAKFACTOR;
+		info.m_nCloakColorTint = CLOAKCOLORTINT;
+		info.m_nRefractAmount = REFRACTAMOUNT;
+	}
+
+	bool NeedsPowerOfTwoFrameBufferTexture( IMaterialVar **params, bool bCheckSpecificToThisFrame ) const 
+	{ 
+		if ( params[CLOAKPASSENABLED]->GetIntValue() ) // If material supports cloaking
+		{
+			if ( bCheckSpecificToThisFrame == false ) // For setting model flag at load time
+				return true;
+			else if ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) // Per-frame check
+				return true;
+			// else, not cloaking this frame, so check flag2 in case the base material still needs it
+		}
+
+		// Check flag2 if not drawing cloak pass
+		return IS_FLAG2_SET( MATERIAL_VAR2_NEEDS_POWER_OF_TWO_FRAME_BUFFER_TEXTURE ); 
+	}
+
+	bool IsTranslucent( IMaterialVar **params ) const
+	{
+		if ( params[CLOAKPASSENABLED]->GetIntValue() ) // If material supports cloaking
+		{
+			if ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) // Per-frame check
+				return true;
+			// else, not cloaking this frame, so check flag in case the base material still needs it
+		}
+
+		// Check flag if not drawing cloak pass
+		return IS_FLAG_SET( MATERIAL_VAR_TRANSLUCENT ); 
+	}
+
+	SHADER_INIT_PARAMS()
+	{
+		SET_FLAGS2( MATERIAL_VAR2_SUPPORTS_HW_SKINNING );
+
+		// Cloak Pass
+		if ( !params[CLOAKPASSENABLED]->IsDefined() )
+		{
+			params[CLOAKPASSENABLED]->SetIntValue( 0 );
+		}
+		else if ( params[CLOAKPASSENABLED]->GetIntValue() )
+		{
+			CloakBlendedPassVars_t info;
+			SetupVarsCloakBlendedPass( info );
+			InitParamsCloakBlendedPass( this, params, pMaterialName, info );
+		}
+	}
+
+	SHADER_INIT
+	{
+		if (params[BASETEXTURE]->IsDefined())
+			LoadTexture( BASETEXTURE );
+
+		// Cloak Pass
+		if ( params[CLOAKPASSENABLED]->GetIntValue() )
+		{
+			CloakBlendedPassVars_t info;
+			SetupVarsCloakBlendedPass( info );
+			InitCloakBlendedPass( this, params, info );
+		}
+	}
+
+	SHADER_DRAW
+	{
+		// Skip the standard rendering if cloak pass is fully opaque
+		bool bDrawStandardPass = true;
+		if ( params[CLOAKPASSENABLED]->GetIntValue() && ( pShaderShadow == NULL ) ) // && not snapshotting
+		{
+			CloakBlendedPassVars_t info;
+			SetupVarsCloakBlendedPass( info );
+			if ( CloakBlendedPassIsFullyOpaque( params, info ) )
+			{
+				// There is some strangeness in DX8 when trying to skip the main pass, so leave this alone for now
+				//bDrawStandardPass = false;
+			}
+		}
+
+		// Standard rendering pass
+		if ( bDrawStandardPass )
+		{
+			bool bMod2X = params[MOD2X]->IsDefined() && params[MOD2X]->GetIntValue();
+			bool bVertexColorOrAlpha = IS_FLAG_SET( MATERIAL_VAR_VERTEXCOLOR ) || IS_FLAG_SET( MATERIAL_VAR_VERTEXALPHA );
+
+			SHADOW_STATE
+			{
+				if( bMod2X )
+				{
+					EnableAlphaBlending( SHADER_BLEND_DST_COLOR, SHADER_BLEND_SRC_COLOR );
+				}
+				else
+				{
+					EnableAlphaBlending( SHADER_BLEND_DST_COLOR, SHADER_BLEND_ZERO );
+				}
+
+				if (params[WRITEZ]->GetIntValue() != 0)
+				{
+					// This overrides the disabling of depth writes performed in
+					// EnableAlphaBlending
+					pShaderShadow->EnableDepthWrites( true );
+				}
+
+				unsigned int flags = VERTEX_POSITION;
+				int numTexCoords = 1;
+
+				if( params[BASETEXTURE]->IsTexture() )
+				{
+					pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+				}
+
+				if( bVertexColorOrAlpha )
+				{
+					flags |= VERTEX_COLOR;
+				}
+
+				pShaderShadow->VertexShaderVertexFormat( flags, numTexCoords, NULL, 0 );
+
+				unlitgeneric_vs11_Static_Index vshIndex;
+				vshIndex.SetDETAIL( false );
+				vshIndex.SetENVMAP( false );
+				vshIndex.SetENVMAPCAMERASPACE( false );
+				vshIndex.SetENVMAPSPHERE( false );
+				vshIndex.SetSEPARATEDETAILUVS( false );
+				vshIndex.SetVERTEXCOLOR( bVertexColorOrAlpha );
+				
+				pShaderShadow->SetVertexShader( "unlitgeneric_vs11", vshIndex.GetIndex() );
+				pShaderShadow->SetPixelShader( "Modulate_ps11" );
+
+				// We need to fog to *white* regardless of overbrighting...
+				if( bMod2X )
+				{
+					FogToGrey();
+				}
+				else
+				{
+					FogToOOOverbright();
+				}
+			}
+			DYNAMIC_STATE
+			{
+				if( params[BASETEXTURE]->IsTexture() )
+				{
+					BindTexture( SHADER_SAMPLER0, BASETEXTURE, FRAME );
+					SetVertexShaderTextureTransform( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, BASETEXTURETRANSFORM );
+				}
+
+				// set constant color for modulation
+				SetModulationVertexShaderDynamicState();
+
+				// We need to fog to *white* regardless of overbrighting...
+				if( bMod2X )
+				{
+					float grey[4] = { 0.5f, 0.5f, 0.5f, 1.0f };
+					pShaderAPI->SetPixelShaderConstant( 0, grey );
+				}
+				else
+				{
+					float white[4] = { 0.5f, 0.5f, 0.5f, 1.0f };
+					pShaderAPI->SetPixelShaderConstant( 0, white );
+				}
+				unlitgeneric_vs11_Dynamic_Index vshIndex;
+				vshIndex.SetDOWATERFOG( pShaderAPI->GetSceneFogMode() == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
+				vshIndex.SetSKINNING( pShaderAPI->GetCurrentNumBones() > 0 );
+				pShaderAPI->SetVertexShaderIndex( vshIndex.GetIndex() );
+			}
+			Draw( );
+		}
+		else
+		{
+			// Skip this pass!
+			Draw( false );
+		}
+
+		// Cloak Pass
+		if ( params[CLOAKPASSENABLED]->GetIntValue() )
+		{
+			// If ( snapshotting ) or ( we need to draw this frame )
+			if ( ( pShaderShadow != NULL ) || ( ( params[CLOAKFACTOR]->GetFloatValue() > 0.0f ) && ( params[CLOAKFACTOR]->GetFloatValue() < 1.0f ) ) )
+			{
+				CloakBlendedPassVars_t info;
+				SetupVarsCloakBlendedPass( info );
+				DrawCloakBlendedPass( this, params, pShaderAPI, pShaderShadow, info, vertexCompression );
+			}
+			else // We're not snapshotting and we don't need to draw this frame
+			{
+				// Skip this pass!
+				Draw( false );
+			}
+		}
+	}
+END_SHADER