.. _program_listing_file_gui_Demeter_Renderer_Texture.cpp:

Program Listing for File Texture.cpp
====================================

|exhale_lsh| :ref:`Return to documentation for file <file_gui_Demeter_Renderer_Texture.cpp>` (``gui/Demeter/Renderer/Texture.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "logging/Logger.hpp"
   
   #include "Texture.hpp"
   
   bool Texture::Init(SDL2 &sdl, const std::string &path)
   {
     surface = std::unique_ptr<SDL_Surface>(sdl.IMGLoad(path));
     if (!surface) {
       Log::failed
         << "Failed to load image: " << path
         << "\nSDL_image error: " << sdl.GetIMGError();
       return false;
     }
   
     switch (surface->format->BytesPerPixel) {
       case 4:
         format = (surface->format->Rmask == 0x000000ff) ? GL_RGBA : GL_BGRA;
         break;
       case 3:
         format = (surface->format->Rmask == 0x000000ff) ? GL_RGB : GL_BGR;
         break;
       default:
         Log::failed
           << "Unsupported image format: " << surface->format->BytesPerPixel
           << " bytes per pixel";
         return false;
     }
   
     GenGLTexture();
     return true;
   }
   
   Texture::~Texture()
   {
     if (surface)
       SDL_FreeSurface(surface.release());
     if (texture)
       glDeleteTextures(1, &texture);
   }
   
   void Texture::GenGLTexture()
   {
     glGenTextures(1, &texture);
     glBindTexture(GL_TEXTURE_2D, texture);
   
     glTexImage2D(
       GL_TEXTURE_2D,
       0,
       GetFormat(),
       surface->w,
       surface->h,
       0,
       format,
       GL_UNSIGNED_BYTE,
       surface->pixels);
   
     glGenerateMipmap(GL_TEXTURE_2D);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
     // glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
     // GL_LINEAR_MIPMAP_LINEAR); glTexParameteri(GL_TEXTURE_2D,
     // GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
   }