From d9ac276a957034bba99d71c1ecbfb53c3d2d1c87 Mon Sep 17 00:00:00 2001
From: Joe Ludwig <joe@valvesoftware.com>
Date: Tue, 30 Jul 2013 15:10:15 -0700
Subject: Added bloom shader and screenspace effect helpers as examples for the
 SDK.

---
 sp/src/materialsystem/stdshaders/Bloom.cpp | 90 ++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 sp/src/materialsystem/stdshaders/Bloom.cpp

(limited to 'sp/src/materialsystem/stdshaders/Bloom.cpp')

diff --git a/sp/src/materialsystem/stdshaders/Bloom.cpp b/sp/src/materialsystem/stdshaders/Bloom.cpp
new file mode 100644
index 00000000..620a6edb
--- /dev/null
+++ b/sp/src/materialsystem/stdshaders/Bloom.cpp
@@ -0,0 +1,90 @@
+//===== Copyright © 1996-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//===========================================================================//
+
+#include "BaseVSShader.h"
+
+#include "SDK_screenspaceeffect_vs20.inc"
+#include "SDK_Bloom_ps20.inc"
+#include "SDK_Bloom_ps20b.inc"
+
+BEGIN_VS_SHADER_FLAGS( SDK_Bloom, "Help for Bloom", SHADER_NOT_EDITABLE )
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( FBTEXTURE, SHADER_PARAM_TYPE_TEXTURE, "_rt_FullFrameFB", "" )
+		SHADER_PARAM( BLURTEXTURE, SHADER_PARAM_TYPE_TEXTURE, "_rt_SmallHDR0", "" )
+	END_SHADER_PARAMS
+
+	SHADER_INIT
+	{
+		if( params[FBTEXTURE]->IsDefined() )
+		{
+			LoadTexture( FBTEXTURE );
+		}
+		if( params[BLURTEXTURE]->IsDefined() )
+		{
+			LoadTexture( BLURTEXTURE );
+		}
+	}
+	
+	SHADER_FALLBACK
+	{
+		// Requires DX9 + above
+		if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
+		{
+			Assert( 0 );
+			return "Wireframe";
+		}
+		return 0;
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableDepthWrites( false );
+
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableTexture( SHADER_SAMPLER1, true );
+			int fmt = VERTEX_POSITION;
+			pShaderShadow->VertexShaderVertexFormat( fmt, 1, 0, 0 );
+
+			// Pre-cache shaders
+			DECLARE_STATIC_VERTEX_SHADER( sdk_screenspaceeffect_vs20 );
+			SET_STATIC_VERTEX_SHADER( sdk_screenspaceeffect_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( sdk_bloom_ps20b );
+				SET_STATIC_PIXEL_SHADER( sdk_bloom_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( sdk_bloom_ps20 );
+				SET_STATIC_PIXEL_SHADER( sdk_bloom_ps20 );
+			}
+		}
+
+		DYNAMIC_STATE
+		{
+			BindTexture( SHADER_SAMPLER0, FBTEXTURE, -1 );
+			BindTexture( SHADER_SAMPLER1, BLURTEXTURE, -1 );
+			DECLARE_DYNAMIC_VERTEX_SHADER( sdk_screenspaceeffect_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER( sdk_screenspaceeffect_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( sdk_bloom_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER( sdk_bloom_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( sdk_bloom_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER( sdk_bloom_ps20 );
+			}
+		}
+		Draw();
+	}
+END_SHADER
-- 
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