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materialsystem/stdshaders/downsample_nohdr.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//============================================================================//
+
+#include "BaseVSShader.h"
+#include "common_hlsl_cpp_consts.h"
+#include "convar.h"
+
+#include "Downsample_nohdr_ps20.inc"
+#include "Downsample_nohdr_ps20b.inc"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+static ConVar r_bloomtintr( "r_bloomtintr", "0.3" );
+static ConVar r_bloomtintg( "r_bloomtintg", "0.59" );
+static ConVar r_bloomtintb( "r_bloomtintb", "0.11" );
+static ConVar r_bloomtintexponent( "r_bloomtintexponent", "2.2" );
+
+BEGIN_VS_SHADER_FLAGS( Downsample_nohdr, "Help for Downsample_nohdr", SHADER_NOT_EDITABLE )
+
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( BLOOMTINTENABLE, SHADER_PARAM_TYPE_INTEGER, "1", "" )
+		SHADER_PARAM( CSTRIKE, SHADER_PARAM_TYPE_INTEGER, "0", "" )
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+		if ( !params[ BLOOMTINTENABLE ]->IsDefined() )
+		{
+			params[ BLOOMTINTENABLE ]->SetIntValue( 1 );
+		}
+	}
+
+	SHADER_INIT
+	{
+		LoadTexture( BASETEXTURE );
+	}
+
+	SHADER_FALLBACK
+	{
+		if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
+		{
+			return "Downsample_nohdr_DX80";
+		}
+		return 0;
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableDepthWrites( false );
+			pShaderShadow->EnableAlphaWrites( true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+
+			// Render targets are pegged as sRGB on OSX, so just force these reads and writes
+			bool bForceSRGBReadAndWrite = IsOSX() && g_pHardwareConfig->CanDoSRGBReadFromRTs();
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, bForceSRGBReadAndWrite );
+			pShaderShadow->EnableSRGBWrite( bForceSRGBReadAndWrite );
+
+			pShaderShadow->VertexShaderVertexFormat( VERTEX_POSITION, 1, 0, 0 );
+
+			pShaderShadow->SetVertexShader( "Downsample_vs20", 0 );
+			
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() || g_pHardwareConfig->ShouldAlwaysUseShaderModel2bShaders() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( downsample_nohdr_ps20b );
+				SET_STATIC_PIXEL_SHADER_COMBO( CSTRIKE, params[CSTRIKE]->GetIntValue() ? 1 : 0 );
+#ifndef _X360
+				SET_STATIC_PIXEL_SHADER_COMBO( SRGB_ADAPTER, bForceSRGBReadAndWrite );
+#endif
+				SET_STATIC_PIXEL_SHADER( downsample_nohdr_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( downsample_nohdr_ps20 );
+				SET_STATIC_PIXEL_SHADER_COMBO( CSTRIKE, params[CSTRIKE]->GetIntValue() ? 1 : 0 );
+				SET_STATIC_PIXEL_SHADER( downsample_nohdr_ps20 );
+			}
+		}
+
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, BASETEXTURE, -1 );
+
+			int width, height;
+			pShaderAPI->GetBackBufferDimensions( width, height );
+
+			float v[4][4];
+			float dX = 1.0f/width;
+			float dY = 1.0f/height;
+
+			v[0][0] = .5*dX;
+			v[0][1] = .5*dY;
+			v[1][0] = 2.5*dX;
+			v[1][1] = .5*dY;
+			v[2][0] = .5*dX;
+			v[2][1] = 2.5*dY;
+			v[3][0] = 2.5*dX;
+			v[3][1] = 2.5*dY;
+			pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, &v[0][0], 4 );
+
+			pShaderAPI->SetVertexShaderIndex( 0 );
+
+			float flPixelShaderParams[4] = { r_bloomtintr.GetFloat(),
+											 r_bloomtintg.GetFloat(),
+											 r_bloomtintb.GetFloat(),
+											 r_bloomtintexponent.GetFloat() };
+			if ( params[ BLOOMTINTENABLE ]->GetIntValue() == 0 )
+			{
+				flPixelShaderParams[0] = 0.333f;
+				flPixelShaderParams[1] = 0.333f;
+				flPixelShaderParams[2] = 0.333f;
+				flPixelShaderParams[3] = 1.0f;
+			}
+			pShaderAPI->SetPixelShaderConstant( 0, flPixelShaderParams, 1 );
+						
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() || g_pHardwareConfig->ShouldAlwaysUseShaderModel2bShaders() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( downsample_nohdr_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER( downsample_nohdr_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( downsample_nohdr_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER( downsample_nohdr_ps20 );
+			}
+		}
+		Draw();
+	}
+END_SHADER