c++ - Texture not showing up with SOIL and OpenGL 3.2 -

i using soil load textures, , trying "display" them on triangle using opengl 3.2. having problem, though: nothing showing up.

this code:

#include <iostream>  #include "gl/soil.h"  #include "math/vec3.hpp" #include "math/mat3.hpp" #include "setup.hpp" #include "graphics/shader.hpp" #include "graphics/texture.hpp"  int main() {     if(!setup::initopengl())         return -1;      if(!setup::openwindow("testing", 800, 600))         return -1;      glfloat vertices[] =     {         0.0f,  0.5f, -1.0f,         0.5f, -0.5f, -1.0f,        -0.5f, -0.5f, -1.0f     };      glfloat uv[] =     {         0.5f, 0.0f,         1.0f, 1.0f,         0.0f, 1.0f     };      shader shader("", "");     shader.compile("#version 330\nlayout(location = 0) in vec3 vertexposition_modelspace;\nlayout(location = 1) in vec2 vertexuv;\nout vec2 uv;\nvoid main() { gl_position.xyz = vertexposition_modelspace;gl_position.w = 1.0;\nuv = vertexuv; }",                    "#version 330 core\nout vec3 color;\nin vec2 uv;\nuniform sampler2d tex_sampler;\nvoid main() { color = texture(tex_sampler, uv).rgb; }");      gluint vertexbuffer;     glgenbuffers(1, &vertexbuffer);     glbindbuffer(gl_array_buffer, vertexbuffer);     glbufferdata(gl_array_buffer, sizeof(vertices), vertices, gl_static_draw);      gluint texbuffer;     glgenbuffers(1, &texbuffer);     glbindbuffer(gl_array_buffer, texbuffer);     glbufferdata(gl_array_buffer, sizeof(uv), uv, gl_static_draw);       gluint _tex = soil_load_ogl_texture("test.jpg", soil_load_auto, soil_create_new_id, soil_flag_ntsc_safe_rgb | soil_flag_mipmaps);      std::cout << "tex = " << _tex << std::endl;      glbindtexture(gl_texture_2d, _tex);     gltexparameteri(gl_texture_2d, gl_texture_mag_filter, gl_nearest);     gltexparameteri(gl_texture_2d, gl_texture_min_filter, gl_nearest);          {         glclear(gl_color_buffer_bit | gl_depth_buffer_bit);          shader.bind();         glenablevertexattribarray(0);         glenablevertexattribarray(1);          glbindbuffer(gl_array_buffer, vertexbuffer);         glvertexattribpointer(0, 3, gl_float, gl_false, 0, (void*) 0);          glbindbuffer(gl_array_buffer, texbuffer);         glvertexattribpointer(1, 2, gl_float, gl_false, 0, (void*) 0);          glactivetexture(gl_texture0);         glbindtexture(gl_texture_2d, _tex);         gluniform1i(glgetuniformlocation(shader.getid(), "tex_sampler"), 0);          gldrawarrays(gl_triangles, 0, 3);          gldisablevertexattribarray(0);         gldisablevertexattribarray(1);          shader.unbind();          glfwswapbuffers();     } while(glfwgetkey(glfw_key_esc) != glfw_press && glfwgetwindowparam(glfw_opened));      setup::done();      return 0; } 

and readable version of shaders:

// vertex shader: #version 330  layout(location = 0) in vec3 vertexposition_modelspace; layout(location = 1) in vec2 vertexuv;  out vec2 uv;  void main()  {     gl_position.xyz = vertexposition_modelspace;     gl_position.w = 1.0;     uv = vertexuv;  }  //////////////////// // fragment shader: #version 330 core  out vec3 color;  in vec2 uv; uniform sampler2d tex_sampler;  void main() {     color = texture(tex_sampler, uv).rgb; } 

when code used, nothing shows up. when use constant colour in fragment shader, color = vec3(1.0, 0.0, 0.0);, works perfectly.