dagon.resource.texture source code

1 /*
2 Copyright (c) 2017-2022 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.texture;
29 
30 import std.stdio;
31 import std.path;
32 
33 import dlib.core.memory;
34 import dlib.core.ownership;
35 import dlib.core.stream;
36 import dlib.core.compound;
37 import dlib.image.image;
38 import dlib.image.io;
39 import dlib.image.unmanaged;
40 import dlib.filesystem.filesystem;
41 
42 import dagon.graphics.texture;
43 import dagon.resource.asset;
44 import dagon.resource.dds;
45 
46 class TextureAsset: Asset
47 {
48     Texture texture;
49     SuperImage image;
50     protected TextureBuffer buffer;
51 
52     this(Owner o)
53     {
54         super(o);
55         texture = New!Texture(this);
56     }
57 
58     ~this()
59     {
60         release();
61     }
62 
63     override bool loadThreadSafePart(string filename, InputStream istrm, ReadOnlyFileSystem fs, AssetManager assetManager)
64     {
65         string format = filename.extension;
66         if (format == ".dds" || format == ".DDS")
67         {
68             // Load to TextureBuffer
69             loadDDS(istrm, &buffer);
70             return true;
71         }
72         // TODO: KTX support
73         else
74         {
75             // Load to SuperImage
76             auto res = assetManager.loadImage(filename.extension, istrm);
77             image = res[0];
78             string errMsg = res[1];
79             if (image !is null)
80             {
81                 return true;
82             }
83             else
84             {
85                 writeln(errMsg);
86                 return false;
87             }
88         }
89     }
90 
91     override bool loadThreadUnsafePart()
92     {
93         if (texture.valid)
94             return true;
95         
96         if (image !is null)
97         {
98             texture.createFromImage(image, true);
99             if (texture.valid)
100                 return true;
101             else
102                 return false;
103         }
104         else if (buffer.data.length)
105         {
106             texture.createFromBuffer(buffer, true);
107             Delete(buffer.data);
108             return true;
109         }
110         else
111             return false;
112     }
113 
114     override void release()
115     {
116         if (texture)
117             texture.release();
118         if (image)
119             Delete(image);
120         if (buffer.data.length)
121             Delete(buffer.data);
122     }
123 }
124 
125 TextureAsset textureAsset(AssetManager assetManager, string filename)
126 {
127     TextureAsset asset;
128     if (assetManager.assetExists(filename))
129     {
130         asset = cast(TextureAsset)assetManager.getAsset(filename);
131     }
132     else
133     {
134         asset = New!TextureAsset(assetManager);
135         assetManager.preloadAsset(asset, filename);
136     }
137     return asset;
138 }