dagon.resource.textureasset source code

1 /*
2 Copyright (c) 2017-2018 Timur Gafarov
3 
4 Boost Software License - Version 1.0 - August 17th, 2003
5 Permission is hereby granted, free of charge, to any person or organization
6 obtaining a copy of the software and accompanying documentation covered by
7 this license (the "Software") to use, reproduce, display, distribute,
8 execute, and transmit the Software, and to prepare derivative works of the
9 Software, and to permit third-parties to whom the Software is furnished to
10 do so, all subject to the following:
11 
12 The copyright notices in the Software and this entire statement, including
13 the above license grant, this restriction and the following disclaimer,
14 must be included in all copies of the Software, in whole or in part, and
15 all derivative works of the Software, unless such copies or derivative
16 works are solely in the form of machine-executable object code generated by
17 a source language processor.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
22 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
23 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
24 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 DEALINGS IN THE SOFTWARE.
26 */
27 
28 module dagon.resource.textureasset;
29 
30 import std.stdio;
31 import std.path;
32 
33 import dlib.core.memory;
34 import dlib.core.stream;
35 import dlib.core.compound;
36 import dlib.image.image;
37 import dlib.image.io.bmp;
38 import dlib.image.io.png;
39 import dlib.image.io.tga;
40 import dlib.image.io.jpeg;
41 import dlib.image.io.hdr;
42 import dlib.image.unmanaged;
43 import dlib.image.hdri;
44 import dlib.filesystem.filesystem;
45 
46 import dagon.core.ownership;
47 import dagon.resource.asset;
48 import dagon.graphics.texture;
49 
50 class TextureAsset: Asset
51 {
52     UnmanagedImageFactory imageFactory;
53     UnmanagedHDRImageFactory hdrImageFactory;
54     Texture texture;
55 
56     this(UnmanagedImageFactory imgfac, UnmanagedHDRImageFactory hdrImgFac, Owner o)
57     {
58         super(o);
59         imageFactory = imgfac;
60         hdrImageFactory = hdrImgFac;
61         texture = New!Texture(this);
62     }
63 
64     ~this()
65     {
66         release();
67     }
68 
69     override bool loadThreadSafePart(string filename, InputStream istrm, ReadOnlyFileSystem fs, AssetManager mngr)
70     {
71         string errMsg;
72 
73         if (filename.extension == ".hdr" ||
74             filename.extension == ".HDR")
75         {
76             Compound!(SuperHDRImage, string) res;
77             res = loadHDR(istrm, hdrImageFactory);
78             texture.image = res[0];
79             errMsg = res[1];
80         }
81         else
82         {
83             Compound!(SuperImage, string) res;
84 
85             switch(filename.extension)
86             {
87                 case ".bmp", ".BMP":
88                     res = loadBMP(istrm, imageFactory);
89                     break;
90                 case ".jpg", ".JPG", ".jpeg", ".JPEG":
91                     res = loadJPEG(istrm, imageFactory);
92                     break;
93                 case ".png", ".PNG":
94                     res = loadPNG(istrm, imageFactory);
95                     break;
96                 case ".tga", ".TGA":
97                     res = loadTGA(istrm, imageFactory);
98                     break;
99                 default:
100                     return false;
101             }
102 
103             texture.image = res[0];
104             errMsg = res[1];
105         }
106 
107         if (texture.image !is null)
108         {
109             return true;
110         }
111         else
112         {
113             writeln(errMsg);
114             return false;
115         }
116     }
117 
118     override bool loadThreadUnsafePart()
119     {
120         if (texture.image !is null)
121         {
122             texture.createFromImage(texture.image);
123             if (texture.valid)
124             {
125                 return true;
126             }
127             else
128                 return false;
129         }
130         else
131         {
132             return false;
133         }
134     }
135 
136     override void release()
137     {
138         if (texture)
139             texture.release();
140     }
141 }
142 
143 TextureAsset textureAsset(AssetManager assetManager, string filename)
144 {
145     TextureAsset asset;
146     if (assetManager.assetExists(filename))
147     {
148         asset = cast(TextureAsset)assetManager.getAsset(filename);
149     }
150     else
151     {
152         asset = New!TextureAsset(assetManager.imageFactory, assetManager.hdrImageFactory, assetManager);
153         assetManager.preloadAsset(asset, filename);
154     }
155     return asset;
156 }