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annotate src/texture.cc @ 1:cfe68befb7cc

find changesets by author, revision, files, or words in the commit message
some progress
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 15 Dec 2012 23:43:03 +0200
parents
children a39c301cdcce
rev   line source
nuclear@1 1 #include "opengl.h"
nuclear@1 2 #include "texture.h"
nuclear@1 3
nuclear@1 4 void bind_texture(const Texture *tex, int texunit)
nuclear@1 5 {
nuclear@1 6 static const Texture *curr_tex[8];
nuclear@1 7
nuclear@1 8 if(tex == curr_tex[texunit]) {
nuclear@1 9 return;
nuclear@1 10 }
nuclear@1 11
nuclear@1 12 glActiveTexture(GL_TEXTURE0 + texunit);
nuclear@1 13 if(tex) {
nuclear@1 14 glEnable(tex->type);
nuclear@1 15 glBindTexture(tex->type, tex->tex);
nuclear@1 16 } else {
nuclear@1 17 glDisable(tex->type);
nuclear@1 18 }
nuclear@1 19 glActiveTexture(GL_TEXTURE0);
nuclear@1 20
nuclear@1 21 curr_tex[texunit] = tex;
nuclear@1 22 }
nuclear@1 23
nuclear@1 24
nuclear@1 25 Texture::Texture()
nuclear@1 26 {
nuclear@1 27 type = 0;
nuclear@1 28
nuclear@1 29 size[0] = size[1] = size[2] = 0;
nuclear@1 30
nuclear@1 31 glGenTextures(1, &tex);
nuclear@1 32 }
nuclear@1 33
nuclear@1 34 Texture::~Texture()
nuclear@1 35 {
nuclear@1 36 if(tex) {
nuclear@1 37 glDeleteTextures(1, &tex);
nuclear@1 38 }
nuclear@1 39 }
nuclear@1 40
nuclear@1 41 int Texture::get_size(int idx) const
nuclear@1 42 {
nuclear@1 43 return idx >= 0 && idx < 3 ? size[idx] : 0;
nuclear@1 44 }
nuclear@1 45
nuclear@1 46 Texture2D::Texture2D()
nuclear@1 47 {
nuclear@1 48 type = GL_TEXTURE_2D;
nuclear@1 49
nuclear@1 50 glBindTexture(type, tex);
nuclear@1 51 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@1 52 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@1 53 }
nuclear@1 54
nuclear@1 55 void Texture2D::create(int xsz, int ysz, float *data)
nuclear@1 56 {
nuclear@1 57 glBindTexture(type, tex);
nuclear@1 58 glTexImage2D(type, 0, GL_RGBA, xsz, ysz, 0, GL_RGBA, GL_FLOAT, data);
nuclear@1 59
nuclear@1 60 size[0] = xsz;
nuclear@1 61 size[1] = ysz;
nuclear@1 62 }
nuclear@1 63
nuclear@1 64 Texture3D::Texture3D()
nuclear@1 65 {
nuclear@1 66 type = GL_TEXTURE_3D;
nuclear@1 67
nuclear@1 68 glBindTexture(type, tex);
nuclear@1 69 glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
nuclear@1 70 glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@1 71 }
nuclear@1 72
nuclear@1 73 void Texture3D::create(int xsz, int ysz, int zsz, float *data)
nuclear@1 74 {
nuclear@1 75 glBindTexture(type, tex);
nuclear@1 76 glTexImage3D(type, 0, GL_RGBA, xsz, ysz, zsz, 0, GL_RGBA, GL_FLOAT, data);
nuclear@1 77
nuclear@1 78 size[0] = xsz;
nuclear@1 79 size[1] = ysz;
nuclear@1 80 size[2] = zsz;
nuclear@1 81 }