1 files changed, 114 insertions, 0 deletions
diff --git a/materialsystem/stdshaders/AccumBuff4Sample.cpp b/materialsystem/stdshaders/AccumBuff4Sample.cpp
new file mode 100644
index 0000000..d20ca3c
--- /dev/null
+++ b/materialsystem/stdshaders/AccumBuff4Sample.cpp
@@ -0,0 +1,114 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================
+
+#include "BaseVSShader.h"
+#include "common_hlsl_cpp_consts.h"
+#include "screenspaceeffect_vs20.inc"
+#include "accumbuff4sample_ps20.inc"
+#include "accumbuff4sample_ps20b.inc"
+#include "convar.h"
+
+BEGIN_VS_SHADER_FLAGS( accumbuff4sample, "Help for AccumBuff4Sample", SHADER_NOT_EDITABLE )
+	BEGIN_SHADER_PARAMS
+
+		// Four textures to sample
+		SHADER_PARAM( TEXTURE0, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+		SHADER_PARAM( TEXTURE1, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+		SHADER_PARAM( TEXTURE2, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+		SHADER_PARAM( TEXTURE3, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+
+		// Corresponding weights for the four input textures
+		SHADER_PARAM( WEIGHTS, SHADER_PARAM_TYPE_VEC4, "", "Weight for Samples" )
+
+	END_SHADER_PARAMS
+
+	SHADER_INIT
+	{
+		LoadTexture( TEXTURE0 );
+		LoadTexture( TEXTURE1 );
+		LoadTexture( TEXTURE2 );
+		LoadTexture( TEXTURE3 );
+	}
+	
+	SHADER_FALLBACK
+	{
+		// Requires DX9 + above
+		if (!g_pHardwareConfig->SupportsVertexAndPixelShaders())
+		{
+			Assert( 0 );
+			return "Wireframe";
+		}
+		return 0;
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableDepthWrites( false );
+			pShaderShadow->EnableDepthTest( false );
+			pShaderShadow->EnableAlphaWrites( false );
+			pShaderShadow->EnableBlending( false );
+			pShaderShadow->EnableCulling( false );
+//			pShaderShadow->PolyMode( SHADER_POLYMODEFACE_FRONT_AND_BACK, SHADER_POLYMODE_LINE );
+
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER2, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER3, true );
+			int fmt = VERTEX_POSITION;
+			pShaderShadow->VertexShaderVertexFormat( fmt, 1, 0, 0 );
+
+			// Render targets are pegged as sRGB on OSX togl, so just force these reads and writes
+			bool bForceSRGBReadAndWrite = IsOSX() && g_pHardwareConfig->CanDoSRGBReadFromRTs();
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, bForceSRGBReadAndWrite );
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER1, bForceSRGBReadAndWrite );
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER2, bForceSRGBReadAndWrite );
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER3, bForceSRGBReadAndWrite );
+			pShaderShadow->EnableSRGBWrite( bForceSRGBReadAndWrite );
+
+			DECLARE_STATIC_VERTEX_SHADER( screenspaceeffect_vs20 );
+			SET_STATIC_VERTEX_SHADER( screenspaceeffect_vs20 );
+			
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( accumbuff4sample_ps20b );
+				SET_STATIC_PIXEL_SHADER( accumbuff4sample_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( accumbuff4sample_ps20 );
+				SET_STATIC_PIXEL_SHADER( accumbuff4sample_ps20 );
+			}
+		}
+
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, TEXTURE0, -1 );
+			BindTexture( SHADER_SAMPLER1, TEXTURE1, -1 );
+			BindTexture( SHADER_SAMPLER2, TEXTURE2, -1 );
+			BindTexture( SHADER_SAMPLER3, TEXTURE3, -1 );
+
+			SetPixelShaderConstant( 0, WEIGHTS );
+
+			DECLARE_DYNAMIC_VERTEX_SHADER( screenspaceeffect_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER( screenspaceeffect_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( accumbuff4sample_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER( accumbuff4sample_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( accumbuff4sample_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER( accumbuff4sample_ps20 );
+			}
+		}
+		Draw();
+	}
+END_SHADER