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1 files changed, 149 insertions, 0 deletions

diff --git a/materialsystem/stdshaders/shadowbuild_dx9.cpp b/materialsystem/stdshaders/shadowbuild_dx9.cpp
new file mode 100644
index 0000000..57dbd8a
--- /dev/null
+++ b/materialsystem/stdshaders/shadowbuild_dx9.cpp
@@ -0,0 +1,149 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: A shader that builds the shadow using render-to-texture
+//
+// $Header: $
+// $NoKeywords: $
+//=============================================================================//
+
+#include "BaseVSShader.h"
+#include "mathlib/vmatrix.h"
+
+#include "unlitgeneric_vs20.inc"
+#include "shadowbuildtexture_ps20.inc"
+#include "shadowbuildtexture_ps20b.inc"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+DEFINE_FALLBACK_SHADER( ShadowBuild, ShadowBuild_DX9 )
+
+BEGIN_VS_SHADER_FLAGS( ShadowBuild_DX9, "Help for ShadowBuild", SHADER_NOT_EDITABLE )
+
+	BEGIN_SHADER_PARAMS
+		SHADER_PARAM( TRANSLUCENT_MATERIAL, SHADER_PARAM_TYPE_MATERIAL, "", "Points to a material to grab translucency from" )
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+		SET_FLAGS2( MATERIAL_VAR2_SUPPORTS_HW_SKINNING );
+		SET_FLAGS( MATERIAL_VAR_NO_DEBUG_OVERRIDE );
+	}
+
+	SHADER_FALLBACK
+	{
+		if ( !g_pHardwareConfig->SupportsVertexAndPixelShaders() )
+			return "ShadowBuild_DX6";
+
+		if ( g_pHardwareConfig->GetDXSupportLevel() < 90 )
+			return "ShadowBuild_DX8";
+
+		return 0;
+	}
+
+	SHADER_INIT
+	{
+		if ( params[BASETEXTURE]->IsDefined() )
+		{
+			LoadTexture( BASETEXTURE, TEXTUREFLAGS_SRGB );
+		}
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			// Add the alphas into the frame buffer
+			EnableAlphaBlending( SHADER_BLEND_ONE, SHADER_BLEND_ONE );
+
+			// base texture.  We just use this for alpha, but enable SRGB read to make everything consistent.
+			pShaderShadow->EnableTexture( SHADER_SAMPLER0, true );
+			pShaderShadow->EnableSRGBRead( SHADER_SAMPLER0, true );
+
+			pShaderShadow->EnableSRGBWrite( true );
+
+			pShaderShadow->EnableAlphaWrites( true );
+			pShaderShadow->EnableDepthWrites( false );
+			pShaderShadow->DepthFunc( SHADER_DEPTHFUNC_ALWAYS );
+
+			// Specify vertex format (note that this shader supports compression)
+			unsigned int flags = VERTEX_POSITION | VERTEX_FORMAT_COMPRESSED;
+			unsigned int nTexCoordCount = 1;
+			unsigned int userDataSize = 0;
+			pShaderShadow->VertexShaderVertexFormat( flags, nTexCoordCount, NULL, userDataSize );
+
+			DECLARE_STATIC_VERTEX_SHADER( unlitgeneric_vs20 );
+			SET_STATIC_VERTEX_SHADER_COMBO( VERTEXCOLOR, 0  );
+			SET_STATIC_VERTEX_SHADER( unlitgeneric_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_STATIC_PIXEL_SHADER( shadowbuildtexture_ps20b );
+				SET_STATIC_PIXEL_SHADER( shadowbuildtexture_ps20b );
+			}
+			else
+			{
+				DECLARE_STATIC_PIXEL_SHADER( shadowbuildtexture_ps20 );
+				SET_STATIC_PIXEL_SHADER( shadowbuildtexture_ps20 );
+			}
+		}
+		DYNAMIC_STATE
+		{
+			SetModulationVertexShaderDynamicState();
+
+			// Snack important parameters from the original material
+			// FIXME: What about alpha modulation? Need a solution for that
+			ITexture *pTexture = NULL;
+			IMaterialVar **ppTranslucentParams = NULL;
+			if (params[TRANSLUCENT_MATERIAL]->IsDefined())
+			{
+				IMaterial *pMaterial = params[TRANSLUCENT_MATERIAL]->GetMaterialValue();
+				if (pMaterial)
+				{
+					ppTranslucentParams = pMaterial->GetShaderParams();
+					if ( ppTranslucentParams[BASETEXTURE]->IsTexture() )
+					{
+						pTexture = ppTranslucentParams[BASETEXTURE]->GetTextureValue();
+					}
+				}
+			}
+
+			if (pTexture)
+			{
+				BindTexture( SHADER_SAMPLER0, pTexture, ppTranslucentParams[FRAME]->GetIntValue() );
+
+				Vector4D transformation[2];
+				const VMatrix &mat = ppTranslucentParams[BASETEXTURETRANSFORM]->GetMatrixValue();
+				transformation[0].Init( mat[0][0], mat[0][1], mat[0][2], mat[0][3] );
+				transformation[1].Init( mat[1][0], mat[1][1], mat[1][2], mat[1][3] );
+				pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_0, transformation[0].Base(), 2 ); 
+			}
+			else
+			{
+				pShaderAPI->BindStandardTexture( SHADER_SAMPLER0, TEXTURE_LIGHTMAP_FULLBRIGHT );
+			}
+
+			float vVertexColor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
+			pShaderAPI->SetVertexShaderConstant( VERTEX_SHADER_SHADER_SPECIFIC_CONST_6, vVertexColor, 1 );
+
+			// Compute the vertex shader index.
+			DECLARE_DYNAMIC_VERTEX_SHADER( unlitgeneric_vs20 );
+			SET_DYNAMIC_VERTEX_SHADER_COMBO( DOWATERFOG, pShaderAPI->GetSceneFogMode() == MATERIAL_FOG_LINEAR_BELOW_FOG_Z );
+			SET_DYNAMIC_VERTEX_SHADER_COMBO( SKINNING, pShaderAPI->GetCurrentNumBones() > 0 );
+			SET_DYNAMIC_VERTEX_SHADER_COMBO( COMPRESSED_VERTS, (int)vertexCompression );
+			SET_DYNAMIC_VERTEX_SHADER( unlitgeneric_vs20 );
+
+			if( g_pHardwareConfig->SupportsPixelShaders_2_b() )
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( shadowbuildtexture_ps20b );
+				SET_DYNAMIC_PIXEL_SHADER( shadowbuildtexture_ps20b );
+			}
+			else
+			{
+				DECLARE_DYNAMIC_PIXEL_SHADER( shadowbuildtexture_ps20 );
+				SET_DYNAMIC_PIXEL_SHADER( shadowbuildtexture_ps20 );
+			}
+		}
+		Draw( );
+	}
+END_SHADER