source/texture.cpp

   1 #include "texture.h"
   2
   3 namespace Msp {
   4 namespace GL {
   5
   6 void Texture::bind() const
   7 {
   8         if(!target) return;
   9
  10         glEnable(target);
  11         glBindTexture(target, id);
  12         bound=this;
  13 }
  14
  15 void Texture::parameter(GLenum param, int value)
  16 {
  17         if(bound!=this) bind();
  18
  19         glTexParameteri(target, param, value);
  20 }
  21
  22 void Texture::parameter(GLenum param, float value)
  23 {
  24         if(bound!=this) bind();
  25
  26         glTexParameterf(target, param, value);
  27 }
  28
  29 sizei Texture::get_width(int level) const
  30 {
  31         if(bound!=this) bind();
  32
  33         int width;
  34         glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
  35         return width;
  36 }
  37
  38 sizei Texture::get_height(int level) const
  39 {
  40         if(bound!=this) bind();
  41
  42         int height;
  43         glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
  44         return height;
  45 }
  46
  47 sizei Texture::get_depth(int level) const
  48 {
  49         if(bound!=this) bind();
  50
  51         int depth;
  52         glGetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);
  53         return depth;
  54 }
  55
  56 Texture::~Texture()
  57 {
  58         glDeleteTextures(1, &id);
  59 }
  60
  61 Texture::Texture():
  62         target(0)
  63 {
  64         glGenTextures(1, &id);
  65 }
  66
  67 const Texture *Texture::bound=0;
  68
  69 } // namespace GL
  70 } // namespace Msp