gfm.opengl.vao source code

1 module gfm.opengl.vao;
2 
3 import std..string;
4 
5 import bindbc.opengl;
6 
7 import gfm.opengl.opengl;
8 
9 /// OpenGL Vertex Array Object wrapper.
10 final class GLVAO
11 {
12     public
13     {
14         /// Creates a VAO.
15         /// Throws: $(D OpenGLException) on error.
16         this()
17         {
18             glGenVertexArrays(1, &_handle);
19             runtimeCheck();
20             _initialized = true;
21         }
22 
23         /// Releases the OpenGL VAO resource.
24         ~this()
25         {
26             if (_initialized)
27             {
28                 debug ensureNotInGC("GLVAO");
29                 glDeleteVertexArrays(1, &_handle);
30                 _initialized = false;
31             }
32         }
33 
34         /// Uses this VAO.
35         /// Throws: $(D OpenGLException) on error.
36         void bind()
37         {
38             glBindVertexArray(_handle);
39             runtimeCheck();
40         }
41 
42         /// Unuses this VAO.
43         /// Throws: $(D OpenGLException) on error.
44         void unbind()
45         {
46             glBindVertexArray(0);
47             runtimeCheck();
48         }
49 
50         /// Returns: Wrapped OpenGL resource handle.
51         GLuint handle() pure const nothrow
52         {
53             return _handle;
54         }
55     }
56 
57     private
58     {
59         GLuint _handle;
60         bool _initialized;
61     }
62 }