1 files changed, 103 insertions, 0 deletions
diff --git a/materialsystem/stdshaders/hsl_filmgrain_pass1.cpp b/materialsystem/stdshaders/hsl_filmgrain_pass1.cpp
new file mode 100644
index 0000000..e2a3527
--- /dev/null
+++ b/materialsystem/stdshaders/hsl_filmgrain_pass1.cpp
@@ -0,0 +1,103 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================
+
+#include "BaseVSShader.h"
+#include "convar.h"
+#include "filmgrain_vs20.inc"
+#include "hsl_filmgrain_pass1_ps20.inc"
+#include "hsl_filmgrain_pass1_ps20b.inc"
+
+//
+// First pass converts from RGB to HSL and tweaks with noise similar to After Effects
+//
+
+BEGIN_VS_SHADER( hsl_filmgrain_pass1, "Help for Film Grain" )
+	BEGIN_SHADER_PARAMS
+		// Input textures
+		SHADER_PARAM( INPUT, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+		SHADER_PARAM( GRAIN, SHADER_PARAM_TYPE_TEXTURE, "", "" )
+
+		// Grain parameters to control positioning and noise params
+		SHADER_PARAM( SCALEBIAS, SHADER_PARAM_TYPE_VEC4, "", "Scale and bias for grain placement" )
+		SHADER_PARAM( HSLNOISESCALE, SHADER_PARAM_TYPE_VEC4, "", "Strength of film grain" )
+
+	END_SHADER_PARAMS
+
+	SHADER_INIT
+	{
+		LoadTexture( INPUT );
+		LoadTexture( GRAIN );
+	}
+
+	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 );
+			int fmt = VERTEX_POSITION;
+			pShaderShadow->VertexShaderVertexFormat( fmt, 1, 0, 0 );
+
+			DECLARE_STATIC_VERTEX_SHADER( filmgrain_vs20 );
+			SET_STATIC_VERTEX_SHADER( filmgrain_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20b );
+				SET_STATIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20 );
+				SET_STATIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20 );
+			}
+		}
+
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, INPUT, -1 );
+			BindTexture( SHADER_SAMPLER1, GRAIN, -1 );
+
+			SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, SCALEBIAS );
+
+			SetPixelShaderConstant( 0, HSLNOISESCALE );
+
+			DECLARE_DYNAMIC_VERTEX_SHADER( filmgrain_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER( filmgrain_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER( hsl_filmgrain_pass1_ps20 );
+			}
+		}
+		Draw();
+	}
+END_SHADER