3d cube

headers/shapes.h

@@ -26,6 +26,51 @@ float sqr_tex_vertices[] = {
     -0.5f, 0.5f,  0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f  /*top left*/
 };
 
+float cube_vertices[] = {
+  /*positions*texture cords*/
+    -0.5f, -0.5f, -0.5f,  0.0f, 0.0f,
+     0.5f, -0.5f, -0.5f,  1.0f, 0.0f,
+     0.5f,  0.5f, -0.5f,  1.0f, 1.0f,
+     0.5f,  0.5f, -0.5f,  1.0f, 1.0f,
+    -0.5f,  0.5f, -0.5f,  0.0f, 1.0f,
+    -0.5f, -0.5f, -0.5f,  0.0f, 0.0f,
+
+    -0.5f, -0.5f,  0.5f,  0.0f, 0.0f,
+     0.5f, -0.5f,  0.5f,  1.0f, 0.0f,
+     0.5f,  0.5f,  0.5f,  1.0f, 1.0f,
+     0.5f,  0.5f,  0.5f,  1.0f, 1.0f,
+    -0.5f,  0.5f,  0.5f,  0.0f, 1.0f,
+    -0.5f, -0.5f,  0.5f,  0.0f, 0.0f,
+
+    -0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+    -0.5f,  0.5f, -0.5f,  1.0f, 1.0f,
+    -0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+    -0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+    -0.5f, -0.5f,  0.5f,  0.0f, 0.0f,
+    -0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+
+     0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+     0.5f,  0.5f, -0.5f,  1.0f, 1.0f,
+     0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+     0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+     0.5f, -0.5f,  0.5f,  0.0f, 0.0f,
+     0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+
+    -0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+     0.5f, -0.5f, -0.5f,  1.0f, 1.0f,
+     0.5f, -0.5f,  0.5f,  1.0f, 0.0f,
+     0.5f, -0.5f,  0.5f,  1.0f, 0.0f,
+    -0.5f, -0.5f,  0.5f,  0.0f, 0.0f,
+    -0.5f, -0.5f, -0.5f,  0.0f, 1.0f,
+
+    -0.5f,  0.5f, -0.5f,  0.0f, 1.0f,
+     0.5f,  0.5f, -0.5f,  1.0f, 1.0f,
+     0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+     0.5f,  0.5f,  0.5f,  1.0f, 0.0f,
+    -0.5f,  0.5f,  0.5f,  0.0f, 0.0f,
+    -0.5f,  0.5f, -0.5f,  0.0f, 1.0f
+};
+
 const char *basicVertexShaderSource =
     "#version 330 core\n"
     "layout (location = 0) in vec3 aPos;\n"

src/main.cpp

@@ -39,22 +39,23 @@ int main(void) {
   glGenBuffers(1, &VBO);
   glBindBuffer(GL_ARRAY_BUFFER, VBO);
 
-  glBufferData(GL_ARRAY_BUFFER, sizeof(sqr_tex_vertices), sqr_tex_vertices,
+  glBufferData(GL_ARRAY_BUFFER, sizeof(cube_vertices),cube_vertices,
                GL_STATIC_DRAW);
-  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void *)0);
+  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *)0);
   glEnableVertexAttribArray(0);
-  glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float),
+
-                        (void *)(3 * sizeof(float)));
+  glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float),
+                        (void *)0);
   glEnableVertexAttribArray(1);
 
-  glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float),
+  glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float),
-                        (void *)(6 * sizeof(float)));
+                        (void *)(3 * sizeof(float)));
   glEnableVertexAttribArray(2);
 
-  glGenBuffers(1, &EBO);
+  // glGenBuffers(1, &EBO);
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
+  // glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
-  glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(sqr_indices), sqr_indices,
+  // glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(sqr_indices), sqr_indices,
-               GL_STATIC_DRAW);
+  //              GL_STATIC_DRAW);
 
   Shader *shaderProgram =
       new Shader("./shaders/MVPTexVert.glsl", "./shaders/TexFrag.glsl");
@@ -86,13 +87,13 @@ int main(void) {
     glm::mat4 model = glm::mat4(1.0f); /*move model*/
     glm::mat4 view = glm::mat4(1.0f); /*move camera*/
     view = glm::translate(view, glm::vec3(0.0f, 0.0f, -3.0f));
-    model = glm::rotate(model, glm::radians(-55.0f), glm::vec3(1.0f, 0.0f, 0.0f));
+    model = glm::rotate(model, (float)glfwGetTime()*glm::radians(55.0f), glm::vec3(1.0f, 0.5f, 0.0f));
     glm::mat4 projection = glm::perspective(glm::radians(45.0f), 800.0f / 600.0f, 0.1f, 100.0f); /*camera settings*/
 
     processInput(window);
 
     glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
-    glClear(GL_COLOR_BUFFER_BIT);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     shaderProgram->use();
     shaderProgram->setInt("Tex0",0);
@@ -104,7 +105,9 @@ int main(void) {
     glBindTexture(GL_TEXTURE_2D, texture);
     glBindVertexArray(VAO);
 
-    glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
+    glEnable(GL_DEPTH_TEST);
+    glDrawArrays(GL_TRIANGLES, 0, 36);
+    //glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
     glfwSwapBuffers(window);
 
     glfwPollEvents();