1HEADmaster

1 files changed, 172 insertions, 0 deletions

diff --git a/engine/r_decal.h b/engine/r_decal.h
new file mode 100644
index 0000000..8883c3a
--- /dev/null
+++ b/engine/r_decal.h
@@ -0,0 +1,172 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef R_DECAL_H
+#define R_DECAL_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "decal_private.h"
+#include "decal_clip.h"
+#include "utllinkedlist.h"
+#include "utlrbtree.h"
+
+#include "tier0/memdbgon.h"
+
+// Initialize and shutdown the decal stuff.
+// R_DecalTerm unlinks all the active decals (which frees their counterparts in displacements).
+void R_DecalInit();
+void R_DecalTerm( worldbrushdata_t *pBrushData, bool term_permanent_decals );
+void R_DecalTermAll();
+float ComputeDecalLightmapOffset( SurfaceHandle_t surfID );
+// get the max vertex/index to lock in a dynamic VB
+void R_DecalsGetMaxMesh( IMatRenderContext *pRenderContext, int &nDecalSortMaxVerts, int &nDecalSortMaxIndices );
+
+// --------------------------------------------------------------- //
+// Decal functions used for displacements.
+// --------------------------------------------------------------- //
+
+// Figure out where the decal maps onto the surface.
+void R_SetupDecalClip( 
+	CDecalVert* &pOutVerts,
+	decal_t *pDecal,
+	Vector &vSurfNormal,
+	IMaterial *pMaterial,
+	Vector textureSpaceBasis[3],
+	float decalWorldScale[2] );
+
+//-----------------------------------------------------------------------------
+// Gets the decal material and radius based on the decal index
+//-----------------------------------------------------------------------------
+void R_DecalGetMaterialAndSize( int decalIndex, IMaterial*& pDecalMaterial, float& w, float& h );
+
+//=============================================================================
+//
+// Decal Sort Structures.
+//
+#define DECALSORT_RBTREE_SIZE	16
+
+enum 
+{
+	PERMANENT_LIGHTMAP = 0,
+	LIGHTMAP,
+	NONLIGHTMAP,
+
+	DECALSORT_TYPE_COUNT,
+};
+
+struct DecalSortVertexFormat_t
+{
+	VertexFormat_t		m_VertexFormat;
+	int					m_iSortTree;			// Sort tree index.
+};
+
+struct DecalMaterialSortData_t
+{
+	IMaterial	*m_pMaterial;
+	int			m_iLightmapPage; 
+	int			m_iBucket;			// Index into the s_aDecalMaterialHead list.
+};
+
+struct DecalMaterialBucket_t
+{
+	int			m_iHead;
+	int			m_nCheckCount;
+};
+
+inline bool DecalSortTreeSortLessFunc( const DecalMaterialSortData_t &decal1, const DecalMaterialSortData_t &decal2 )
+{
+	if ( ( decal1.m_iLightmapPage == -1 ) || ( decal2.m_iLightmapPage == -1 ) )
+	{
+		return ( ( int )decal1.m_pMaterial < ( int )decal2.m_pMaterial );
+	}
+
+	if ( ( int )decal1.m_pMaterial == ( int )decal2.m_pMaterial )
+	{
+		return ( decal1.m_iLightmapPage < decal2.m_iLightmapPage );
+	}
+	else
+	{
+		return ( ( int )decal1.m_pMaterial < ( int )decal2.m_pMaterial );
+	}
+}
+
+struct DecalSortTrees_t
+{
+	CUtlRBTree<DecalMaterialSortData_t, int>	*m_pTrees[DECALSORT_TYPE_COUNT];
+	CUtlVector<DecalMaterialBucket_t>			m_aDecalSortBuckets[MAX_MAT_SORT_GROUPS+1][DECALSORT_TYPE_COUNT];
+
+	DecalSortTrees_t()
+	{
+		for ( int iSort = 0; iSort < DECALSORT_TYPE_COUNT; ++iSort )
+		{
+			m_pTrees[iSort] = new CUtlRBTree<DecalMaterialSortData_t, int>( DECALSORT_RBTREE_SIZE, DECALSORT_RBTREE_SIZE, DecalSortTreeSortLessFunc );
+		}
+	}
+
+	~DecalSortTrees_t()
+	{
+		for ( int iSort = 0; iSort < DECALSORT_TYPE_COUNT; ++iSort )
+		{
+			if ( m_pTrees[iSort] )
+			{
+				m_pTrees[iSort]->RemoveAll();
+				delete m_pTrees[iSort];
+				m_pTrees[iSort] = NULL;
+			}
+		}
+
+		for ( int iGroup = 0; iGroup < ( MAX_MAT_SORT_GROUPS + 1 ); ++iGroup )
+		{
+			for ( int iSort = 0; iSort < DECALSORT_TYPE_COUNT; ++iSort )
+			{
+				m_aDecalSortBuckets[iGroup][iSort].Purge();
+			}
+		}
+	}
+};
+
+extern CUtlVector<DecalSortVertexFormat_t>	g_aDecalFormats;
+
+// Surface decals.
+extern CUtlFixedLinkedList<decal_t*>		g_aDecalSortPool;
+extern CUtlVector<DecalSortTrees_t>			g_aDecalSortTrees;
+extern int									g_nDecalSortCheckCount;
+extern int									g_nBrushModelDecalSortCheckCount;
+
+// Displacement decals.
+extern CUtlFixedLinkedList<decal_t*>		g_aDispDecalSortPool;
+extern CUtlVector<DecalSortTrees_t>			g_aDispDecalSortTrees;
+extern int									g_nDispDecalSortCheckCount;
+
+struct DecalBatchList_t
+{
+	IMaterial		*m_pMaterial;
+	void			*m_pProxy;
+	int				m_iLightmapPage;
+	unsigned short	m_iStartIndex;
+	unsigned short	m_nIndexCount;
+};
+
+struct DecalMeshList_t
+{
+	IMesh									*m_pMesh;
+	CUtlVectorFixed<DecalBatchList_t, 128>	m_aBatches;
+};
+
+void DecalSurfacesInit( bool bBrushModel );
+void DecalSurfaceAdd( SurfaceHandle_t surfID, int renderGroup );
+void DecalSurfaceDraw( IMatRenderContext *pRenderContext, int renderGroup, float flFade = 1.0f );
+void DrawDecalsOnSingleSurface( IMatRenderContext *pRenderContext, SurfaceHandle_t surfID );
+
+void R_DecalReSortMaterials( void );
+void R_DecalFlushDestroyList( void );
+
+extern VMatrix g_BrushToWorldMatrix;
+#include "tier0/memdbgoff.h"
+
+#endif // R_DECAL_H