1 /** 2 Copyright: Copyright (c) 2013-2016 Andrey Penechko. 3 License: $(WEB boost.org/LICENSE_1_0.txt, Boost License 1.0). 4 Authors: Andrey Penechko. 5 */ 6 7 module anchovy.texture; 8 9 import std.conv, std.file; 10 import std.stdio; 11 import std.string; 12 13 import derelict.opengl3.gl3; 14 import dlib.image.image : SuperImage; 15 import anchovy.glerrors; 16 17 //version = debugTexture; 18 19 enum TextureTarget : uint 20 { 21 target1d = GL_TEXTURE_1D, 22 target2d = GL_TEXTURE_2D, 23 target3d = GL_TEXTURE_3D, 24 targetRectangle = GL_TEXTURE_RECTANGLE, 25 targetBuffer = GL_TEXTURE_BUFFER, 26 targetCubeMap = GL_TEXTURE_CUBE_MAP, 27 target1dArray = GL_TEXTURE_1D_ARRAY, 28 target2dArray = GL_TEXTURE_2D_ARRAY, 29 targetCubeMapArray = GL_TEXTURE_CUBE_MAP_ARRAY, 30 target2dMultisample = GL_TEXTURE_2D_MULTISAMPLE, 31 target2dMultisampleArray = GL_TEXTURE_2D_MULTISAMPLE_ARRAY, 32 } 33 34 enum TextureFormat : uint 35 { 36 r = GL_RED, 37 rg = GL_RG, 38 rgb = GL_RGB, 39 rgba = GL_RGBA, 40 } 41 42 class Texture 43 { 44 private: 45 TextureFormat texFormat; 46 uint glTextureHandle; 47 TextureTarget texTarget; 48 49 public: 50 this(SuperImage image, TextureTarget target, TextureFormat format) 51 { 52 texTarget = target; 53 texFormat = format; 54 checkgl!glGenTextures(1, &glTextureHandle); 55 loadFromImage(image); 56 } 57 58 void bind(uint textureUnit = 0) 59 { 60 checkgl!glBindTexture(texTarget, glTextureHandle); 61 } 62 63 void unbind() 64 { 65 checkgl!glBindTexture(texTarget, 0); 66 } 67 68 void loadFromImage(SuperImage img) 69 { 70 bind(); 71 checkgl!glTexImage2D(texTarget, 0, texFormat, img.width, img.height, 0, texFormat, GL_UNSIGNED_BYTE, img.data.ptr); 72 checkgl!glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 73 checkgl!glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 74 unbind(); 75 } 76 77 void unload() 78 { 79 glDeleteTextures(1, &glTextureHandle); 80 } 81 }