1 /*
2  Copyright (c) 2013 yvt
3 
4  This file is part of OpenSpades.
5 
6  OpenSpades is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10 
11  OpenSpades is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  GNU General Public License for more details.
15 
16  You should have received a copy of the GNU General Public License
17  along with OpenSpades.  If not, see <http://www.gnu.org/licenses/>.
18 
19  */
20 
21 #pragma once
22 
23 #include <cstdint>
24 #include <vector>
25 
26 #include "IGLDevice.h"
27 
28 namespace spades {
29 	namespace client {
30 		class GameMap;
31 	}
32 	namespace draw {
33 		class GLRenderer;
34 		class GLRadiosityRenderer;
35 		/** Generates a shadow map of the game map. */
36 		class GLMapShadowRenderer {
37 			friend class GLRadiosityRenderer;
38 
39 			enum { CoarseSize = 8, CoarseBits = 3 };
40 
41 			GLRenderer *renderer;
42 			IGLDevice *device;
43 			client::GameMap *map;
44 			IGLDevice::UInteger texture;
45 			IGLDevice::UInteger coarseTexture;
46 
47 			int w, h, d;
48 
49 			size_t updateBitmapPitch;
50 			std::vector<uint32_t> updateBitmap;
51 
52 			std::vector<uint32_t> bitmap;
53 			std::vector<uint32_t> coarseBitmap;
54 
55 			uint32_t GeneratePixel(int x, int y);
56 			void MarkUpdate(int x, int y);
57 
58 		public:
59 			GLMapShadowRenderer(GLRenderer *renderer, client::GameMap *map);
60 			~GLMapShadowRenderer();
61 
62 			void GameMapChanged(int x, int y, int z, client::GameMap *);
63 
64 			void Update();
65 
GetTexture()66 			IGLDevice::UInteger GetTexture() { return texture; }
GetCoarseTexture()67 			IGLDevice::UInteger GetCoarseTexture() { return coarseTexture; }
68 		};
69 	}
70 }