The engine can now import models with textures but bugs.

More complex models have a bug where the same textures are potentially
being loaded too many times.

src/Mesh.cpp

@@ -55,6 +55,8 @@ void Mesh::draw(ShaderLoader &shader) {
 
     shader.setFloat(("material." + name + number).c_str(), i);
     glBindTexture(GL_TEXTURE_2D, textures[i].id);
+    error.log(std::to_string(textures[i].id));
+    error.log(std::to_string(GL_TEXTURE0 + i));
   }
   glActiveTexture(GL_TEXTURE0);
 

src/Model.cpp

@@ -130,8 +130,19 @@ unsigned int Model::loadTextureFromFile(std::string file,
   if (image == nullptr) {
     error.crash("SDL2_image was unable to load a texture", IMG_GetError());
   }
+
   // Generate the texture and put its reference id in the texture variable
   glGenTextures(1, &texture);
+  glBindTexture(GL_TEXTURE_2D, texture);
+
+  // set some textue defaults
+  float borderColor[] = {1.0f, 1.0f, 0.0f, 1.0f};
+  glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
+  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_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+                  GL_LINEAR_MIPMAP_LINEAR);
 
   // Handle different SDL Surface data types
   int mode = GL_RGB;
@@ -148,5 +159,6 @@ unsigned int Model::loadTextureFromFile(std::string file,
   SDL_FreeSurface(image);
   image = nullptr;
 
+  error.log("loaded texture: " + std::to_string(texture));
   return texture;
 }

src/main.cpp

@@ -77,30 +77,30 @@ int main(int argc, char **argv) {
                       ROOT_DIR "data/shaders/fragment.glsl");
 
   // Load texture image
-  SDL_Surface *image = IMG_Load(ROOT_DIR "data/container.jpg");
-  if (image == nullptr) {
-    error.crash("SDL2_image was unable to load a texture", IMG_GetError());
-  }
+  // SDL_Surface *image = IMG_Load(ROOT_DIR "data/container.jpg");
+  // if (image == nullptr) {
+  //  error.crash("SDL2_image was unable to load a texture", IMG_GetError());
+  //}
 
   // create and bind texture object
-  unsigned int texture;
-  glGenTextures(1, &texture);
-  // glBindTexture(GL_TEXTURE_2D, texture);
+  // unsigned int texture;
+  // glGenTextures(1, &texture);
+  //// glBindTexture(GL_TEXTURE_2D, texture);
 
-  // Handle different SDL Surface data types
-  int mode = GL_RGB;
-  if (image->format->BytesPerPixel == 4) {
-    mode = GL_RGBA;
-  }
+  //// Handle different SDL Surface data types
+  // int mode = GL_RGB;
+  // if (image->format->BytesPerPixel == 4) {
+  //  mode = GL_RGBA;
+  //}
 
-  // Generate texture and mipmap from image
-  glTexImage2D(GL_TEXTURE_2D, 0, mode, image->w, image->h, 0, mode,
-               GL_UNSIGNED_BYTE, image->pixels);
-  glGenerateMipmap(GL_TEXTURE_2D);
+  //// Generate texture and mipmap from image
+  // glTexImage2D(GL_TEXTURE_2D, 0, mode, image->w, image->h, 0, mode,
+  //             GL_UNSIGNED_BYTE, image->pixels);
+  // glGenerateMipmap(GL_TEXTURE_2D);
 
   // remove image surface now it's no longer needed to create texture
-  SDL_FreeSurface(image);
-  image = nullptr;
+  // SDL_FreeSurface(image);
+  // image = nullptr;
 
   // Generate Mesh
   // Define some useful structures to be used in the mesh object
@@ -121,70 +121,70 @@ int main(int argc, char **argv) {
       -0.5f, 0.5f,  0.0f, 0.0f, 1.0f  // top left
   };
 
-  unsigned int indices[] = {
-      0, 1, 3, // First triangle
-      1, 2, 3  // Second triangle
-  };
+  // unsigned int indices[] = {
+  //    0, 1, 3, // First triangle
+  //    1, 2, 3  // Second triangle
+  //};
 
-  std::vector<Vertex> mvertices;
-  Vertex vertex;
-  vertex.Position = glm::vec3(0.5f, 0.5f, 0.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(1.0f, 1.0f);
-  mvertices.push_back(vertex);
-  vertex.Position = glm::vec3(0.5f, -0.5f, 0.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(1.0f, 0.0f);
-  mvertices.push_back(vertex);
-  vertex.Position = glm::vec3(-0.5f, -0.5f, 0.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(0.0f, 0.0f);
-  mvertices.push_back(vertex);
-  vertex.Position = glm::vec3(-0.5f, 0.5f, 0.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(0.0f, 1.0f);
-  mvertices.push_back(vertex);
+  // std::vector<Vertex> mvertices;
+  // Vertex vertex;
+  // vertex.Position = glm::vec3(0.5f, 0.5f, 0.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(1.0f, 1.0f);
+  // mvertices.push_back(vertex);
+  // vertex.Position = glm::vec3(0.5f, -0.5f, 0.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(1.0f, 0.0f);
+  // mvertices.push_back(vertex);
+  // vertex.Position = glm::vec3(-0.5f, -0.5f, 0.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(0.0f, 0.0f);
+  // mvertices.push_back(vertex);
+  // vertex.Position = glm::vec3(-0.5f, 0.5f, 0.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(0.0f, 1.0f);
+  // mvertices.push_back(vertex);
 
-  std::vector<unsigned int> mindices{
-      0, 3, 1, // First triangle
-      1, 3, 2  // Second triangle
-  };
+  // std::vector<unsigned int> mindices{
+  //    0, 3, 1, // First triangle
+  //    1, 3, 2  // Second triangle
+  //};
 
-  std::vector<Texture> mtextures;
-  Texture mtexture;
-  mtexture.id = texture;
-  mtexture.type = "texture_diffuse";
+  // std::vector<Texture> mtextures;
+  // Texture mtexture;
+  // mtexture.id = texture;
+  // mtexture.type = "texture_diffuse";
 
-  Mesh mesh(mvertices, mindices, mtextures);
+  // Mesh mesh(mvertices, mindices, mtextures);
 
-  std::vector<Vertex> mvertices2;
-  vertex.Position = glm::vec3(0.5f, 0.5f, 1.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(1.0f, 1.0f);
-  mvertices2.push_back(vertex);
-  vertex.Position = glm::vec3(0.5f, -0.5f, 1.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(1.0f, 0.0f);
-  mvertices2.push_back(vertex);
-  vertex.Position = glm::vec3(-0.5f, -0.5f, 1.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(0.0f, 0.0f);
-  mvertices2.push_back(vertex);
-  vertex.Position = glm::vec3(-0.5f, 0.5f, 1.0f);
-  vertex.Normal = glm::vec3();
-  vertex.TexCoords = glm::vec2(0.0f, 1.0f);
-  mvertices2.push_back(vertex);
+  // std::vector<Vertex> mvertices2;
+  // vertex.Position = glm::vec3(0.5f, 0.5f, 1.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(1.0f, 1.0f);
+  // mvertices2.push_back(vertex);
+  // vertex.Position = glm::vec3(0.5f, -0.5f, 1.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(1.0f, 0.0f);
+  // mvertices2.push_back(vertex);
+  // vertex.Position = glm::vec3(-0.5f, -0.5f, 1.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(0.0f, 0.0f);
+  // mvertices2.push_back(vertex);
+  // vertex.Position = glm::vec3(-0.5f, 0.5f, 1.0f);
+  // vertex.Normal = glm::vec3();
+  // vertex.TexCoords = glm::vec2(0.0f, 1.0f);
+  // mvertices2.push_back(vertex);
 
-  Mesh mesh2(mvertices2, mindices, mtextures);
+  // Mesh mesh2(mvertices2, mindices, mtextures);
 
-  std::vector<Mesh> modelMeshes;
-  modelMeshes.push_back(mesh);
-  modelMeshes.push_back(mesh2);
-  Model model(modelMeshes);
+  // std::vector<Mesh> modelMeshes;
+  // modelMeshes.push_back(mesh);
+  // modelMeshes.push_back(mesh2);
+  // Model model(modelMeshes);
 
-  Model model2(mesh);
+  // Model model2(mesh);
 
-  model.translate(glm::vec3(1.0f, 0.0f, 0.0f));
+  // model.translate(glm::vec3(1.0f, 0.0f, 0.0f));
 
   // Model backpack(ROOT_DIR "data/models/backpack/backpack.obj");
   Model cube(ROOT_DIR "data/models/cube/cube.obj");
@@ -231,6 +231,7 @@ int main(int argc, char **argv) {
     // model2.draw(shader);
     // model.draw(shader);
     cube.draw(shader);
+    // backpack.draw(shader);
 
     // Finally render everything
     shader.use();