polyplex.core.content.gl.textures source code

1 module polyplex.core.content.gl.textures;
2 import polyplex.core.content.textures;
3 import polyplex.utils.logging;
4 import polyplex.core.render;
5 import polyplex.core.render.gl.gloo;
6 import polyplex.core.render.gl.shader;
7 import polyplex.core.color;
8 import std.stdio;
9 
10 
11 public class GlTexture2D : Texture2D {
12 private:
13 	Texture tex;
14 
15 	static int MAX_TEX_UNITS = -1;
16 	
17 protected:
18 	override void rebuffer() {
19 		int mode = GL_RGBA;
20 
21 		if (tex !is null) destroy(tex);
22 		tex = new Texture();
23 
24 		Bind();
25 		tex.Image2D(TextureType.Tex2D, 0, mode, image.Width, image.Height, 0, mode, GL_UNSIGNED_BYTE, image.Pixels.ptr);
26 		Unbind();
27 
28 		// Set max texture units.
29 		if (MAX_TEX_UNITS == -1) {
30 			glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &MAX_TEX_UNITS);
31 			Logger.Info("Set max texture units to: {0}", MAX_TEX_UNITS);
32 		}
33 	}
34 public:
35 	override uint Id() {
36 		return tex.Id;
37 	}
38 
39 	Texture GLTexture() {
40 		return tex;
41 	}
42 
43 	this(TextureImg img) {
44 		Logger.VerboseDebug("Created GL Texture from image: {0}", img.InternalName);
45 		super(img);
46 	}
47 
48 	this(Color[][] colors) {
49 		super(colors);
50 	}
51 
52 	~this() {
53 		destroy(tex);
54 	}
55 
56 	/**
57 		Binds the texture.	
58 	*/
59 	override void Bind(int attachPos = 0, Shader s = null) {
60 		if (s is null) {
61 			tex.Bind(TextureType.Tex2D);
62 			return;
63 		}
64 		if (!s.HasUniform("ppTexture")) throw new Exception("Texture2D requires ppTexture sampler2d uniform to attach to!");
65 		if (attachPos > MAX_TEX_UNITS) attachPos = MAX_TEX_UNITS;
66 		if (attachPos < 0) attachPos = 0;
67 
68 		tex.Bind(TextureType.Tex2D);
69 		tex.AttachTo(attachPos);
70 	}
71 
72 	/**
73 		Unbinds the texture.
74 	*/
75 	override void Unbind() {
76 		tex.Unbind();
77 	}
78 }