1 files changed, 112 insertions, 0 deletions
diff --git a/materialsystem/stdshaders/BufferClearObeyStencil_dx9.cpp b/materialsystem/stdshaders/BufferClearObeyStencil_dx9.cpp
new file mode 100644
index 0000000..ed871a9
--- /dev/null
+++ b/materialsystem/stdshaders/BufferClearObeyStencil_dx9.cpp
@@ -0,0 +1,112 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Clears color/depth, but obeys stencil while doing so
+//
+//=============================================================================//
+
+#include "BaseVSShader.h"
+
+#include "bufferclearobeystencil_vs20.inc"
+#include "bufferclearobeystencil_ps20.inc"
+#include "bufferclearobeystencil_ps20b.inc"
+
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+DEFINE_FALLBACK_SHADER( BufferClearObeyStencil, BufferClearObeyStencil_DX9 )
+
+BEGIN_VS_SHADER_FLAGS( BufferClearObeyStencil_DX9, "", SHADER_NOT_EDITABLE )
+
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( CLEARCOLOR, SHADER_PARAM_TYPE_INTEGER, "1", "activates clearing of color" )
+		SHADER_PARAM( CLEARALPHA, SHADER_PARAM_TYPE_INTEGER, "-1", "activates clearing of alpha. -1 == copy CLEARCOLOR setting" )
+		SHADER_PARAM( CLEARDEPTH, SHADER_PARAM_TYPE_INTEGER, "1", "activates clearing of depth" )		
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+	}
+
+	SHADER_FALLBACK
+	{
+		if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
+		{
+			return "BufferClearObeyStencil_DX8";
+		}
+		return 0;
+	}
+
+	SHADER_INIT
+	{
+		if ( !params[CLEARALPHA]->IsDefined() )
+			params[CLEARALPHA]->SetIntValue( -1 );
+	}
+
+	SHADER_DRAW
+	{
+		bool bEnableColorWrites = params[CLEARCOLOR]->GetIntValue() != 0;
+		bool bEnableAlphaWrites = (params[CLEARALPHA]->GetIntValue() >= 0) ? (params[CLEARALPHA]->GetIntValue() != 0) : bEnableColorWrites;
+
+		bool bUsesColor = bEnableColorWrites || bEnableAlphaWrites;
+		SHADOW_STATE
+		{
+			pShaderShadow->DepthFunc( SHADER_DEPTHFUNC_ALWAYS );
+			bool bEnableDepthWrites = params[CLEARDEPTH]->GetIntValue() != 0;
+			pShaderShadow->EnableDepthWrites( bEnableDepthWrites );
+
+			pShaderShadow->EnableColorWrites( bEnableColorWrites );
+			pShaderShadow->EnableAlphaWrites( bEnableAlphaWrites );
+
+			pShaderShadow->VertexShaderVertexFormat( VERTEX_POSITION | VERTEX_COLOR, 1, NULL, 0 );
+
+			DECLARE_STATIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
+			SET_STATIC_VERTEX_SHADER_COMBO( USESCOLOR, bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() );
+			SET_STATIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
+
+			//avoid setting a pixel shader when only doing depth/stencil operations, as recommended by PIX
+			if( bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() )
+			{
+				if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+				{
+					DECLARE_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
+					SET_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
+				}
+				else
+				{
+					DECLARE_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
+					SET_STATIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
+				}
+			}
+
+			pShaderShadow->EnableBlending( true );
+			pShaderShadow->BlendFunc( SHADER_BLEND_ONE, SHADER_BLEND_ZERO );
+			pShaderShadow->EnableAlphaTest( true );
+			pShaderShadow->AlphaFunc( SHADER_ALPHAFUNC_ALWAYS, 0 );
+		}
+
+		DYNAMIC_STATE
+		{
+			DECLARE_DYNAMIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER( bufferclearobeystencil_vs20 );
+
+			//avoid setting a pixel shader when only doing depth/stencil operations, as recommended by PIX
+			if( bUsesColor || g_pHardwareConfig->PlatformRequiresNonNullPixelShaders() )
+			{
+				if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+				{
+					DECLARE_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
+					SET_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20b );
+				}
+				else
+				{
+					DECLARE_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
+					SET_DYNAMIC_PIXEL_SHADER( bufferclearobeystencil_ps20 );
+				}
+			}
+		}
+
+		Draw( );
+	}
+
+END_SHADER