+void Texture::set_max_anisotropy(float a)
+{
+ if(a<1.0f)
+ throw invalid_argument("Texture::set_max_anisotropy");
+ else if(a>1.0f)
+ static Require _req(EXT_texture_filter_anisotropic);
+ max_anisotropy = a;
+ update_parameter(MAX_ANISOTROPY);
+}
+
+void Texture::set_wrap(TextureWrap w)
+{
+ set_wrap_s(w);
+ set_wrap_t(w);
+ if(EXT_texture3D)
+ set_wrap_r(w);
+}
+
+void Texture::set_wrap_s(TextureWrap w)
+{
+ wrap_s = w;
+ update_parameter(WRAP_S);
+}
+
+void Texture::set_wrap_t(TextureWrap w)
+{
+ wrap_t = w;
+ update_parameter(WRAP_T);
+}
+
+void Texture::set_wrap_r(TextureWrap w)
+{
+ static Require _req(EXT_texture3D);
+ wrap_r = w;
+ update_parameter(WRAP_R);
+}
+
+bool Texture::can_generate_mipmap()
+{
+ return (EXT_framebuffer_object || SGIS_generate_mipmap);
+}
+
+void Texture::set_generate_mipmap(bool gm)
+{
+ if(gm && !EXT_framebuffer_object)
+ static Require _req(SGIS_generate_mipmap);
+ gen_mipmap = gm;
+ if(!EXT_framebuffer_object)
+ update_parameter(GENERATE_MIPMAP);
+}
+
+void Texture::auto_generate_mipmap()
+{
+ // glGenerateMipmap is defined here
+ if(EXT_framebuffer_object)
+ {
+ if(ARB_direct_state_access)
+ glGenerateTextureMipmap(id);
+ else
+ glGenerateMipmap(target);
+ }
+}
+
+void Texture::set_compare_enabled(bool c)
+{
+ if(c)
+ static Require _req(ARB_shadow);
+ compare = c;
+ update_parameter(COMPARE);
+}
+
+void Texture::set_compare_func(Predicate f)