hello world

neo/renderer/ModelOverlay.h

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+/*
+===========================================================================
+
+Doom 3 GPL Source Code
+Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  
+
+Doom 3 Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Doom 3 Source Code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#ifndef __MODELOVERLAY_H__
+#define __MODELOVERLAY_H__
+
+/*
+===============================================================================
+
+	Render model overlay for adding decals on top of dynamic models.
+
+===============================================================================
+*/
+
+const int MAX_OVERLAY_SURFACES	= 16;
+
+typedef struct overlayVertex_s {
+	int							vertexNum;
+	float						st[2];
+} overlayVertex_t;
+
+typedef struct overlaySurface_s {
+	int							surfaceNum;
+	int							surfaceId;
+	int							numIndexes;
+	glIndex_t *					indexes;
+	int							numVerts;
+	overlayVertex_t *			verts;
+} overlaySurface_t;
+
+typedef struct overlayMaterial_s {
+	const idMaterial *			material;
+	idList<overlaySurface_t *>	surfaces;
+} overlayMaterial_t;
+
+
+class idRenderModelOverlay {
+public:
+								idRenderModelOverlay();
+								~idRenderModelOverlay();
+
+	static idRenderModelOverlay *Alloc( void );
+	static void					Free( idRenderModelOverlay *overlay );
+
+	// Projects an overlay onto deformable geometry and can be added to
+	// a render entity to allow decals on top of dynamic models.
+	// This does not generate tangent vectors, so it can't be used with
+	// light interaction shaders. Materials for overlays should always
+	// be clamped, because the projected texcoords can run well off the
+	// texture since no new clip vertexes are generated.
+	void						CreateOverlay( const idRenderModel *model, const idPlane localTextureAxis[2], const idMaterial *material );
+
+	// Creates new model surfaces for baseModel, which should be a static instantiation of a dynamic model.
+	void						AddOverlaySurfacesToModel( idRenderModel *baseModel );
+
+	// Removes overlay surfaces from the model.
+	static void					RemoveOverlaySurfacesFromModel( idRenderModel *baseModel );
+
+	void						ReadFromDemoFile( class idDemoFile *f );
+	void						WriteToDemoFile( class idDemoFile *f ) const;
+
+private:
+	idList<overlayMaterial_t *>	materials;
+
+	void						FreeSurface( overlaySurface_t *surface );
+};
+
+#endif /* !__MODELOVERLAY_H__ */