Add EBO

Controller.cpp

@@ -33,12 +33,25 @@ Controller::~Controller() {
 void Controller::run() {
     glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
 
-    shaderProgram = new ShaderProgram("res/shaders/basic.vs", "res/shaders/basic.fs");
-    shaderProgram->bind();
+    ShaderProgram shaderProgram("res/shaders/basic.vs", "res/shaders/basic.fs");
+    shaderProgram.bind();
+
+    Vertex vertices[] = {
+        Vertex{-0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f},
+        Vertex{0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
+        Vertex{-0.5f, 0.5f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f},
+        Vertex{0.5f, 0.5f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f}
+    };
+
+    uint32_t indices[] = {
+        0, 1, 2,
+        1, 2, 3
+    };
 
     uint32_t numVertices = sizeof(vertices) / sizeof(Vertex);
+    uint32_t numIndices = sizeof(indices) / sizeof(indices[0]);
 
-    vertexBuffer = new VertexBuffer(vertices, numVertices);
+    VertexBuffer vertexBuffer(vertices, indices, numVertices, numIndices);
 
     // This is the game loop
     while(!glfwWindowShouldClose(gameWindow->getGLFWwindow())) {
@@ -56,9 +69,9 @@ void Controller::run() {
         // Render and buffer swap
         glClear(GL_COLOR_BUFFER_BIT);
 
-        vertexBuffer->bind();
-        glDrawArrays(GL_TRIANGLES, 0, 3);
-        vertexBuffer->unbind();
+        vertexBuffer.bind();
+        glDrawElements(GL_TRIANGLES, numIndices, GL_UNSIGNED_INT, 0);
+        vertexBuffer.unbind();
 
         glfwSwapBuffers(gameWindow->getGLFWwindow());
 

Controller.h

@@ -28,13 +28,4 @@ private:
     const uint16_t MAX_FPS = 60;
     double deltaTime;
 
-    ShaderProgram *shaderProgram;
-    VertexBuffer *vertexBuffer;
-
-    Vertex vertices[3] = {
-        Vertex{-0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f},
-        Vertex{0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
-        Vertex{0.0f, 0.5f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f}
-    };
-
 };

VertexBuffer.cpp

@@ -3,14 +3,18 @@
 #include "VertexBuffer.h"
 #include "defines.h"
 
-VertexBuffer::VertexBuffer(void* data, uint32_t numVertices) {
+VertexBuffer::VertexBuffer(void *vertexData, void *indexData, uint32_t numVertices, uint32_t numIndices) {
 
     glGenVertexArrays(1, &VAO);
     glBindVertexArray(VAO);
     
     glGenBuffers(1, &bufferId);
     glBindBuffer(GL_ARRAY_BUFFER, bufferId);
-    glBufferData(GL_ARRAY_BUFFER, numVertices * sizeof(Vertex), data, GL_STATIC_DRAW);
+    glBufferData(GL_ARRAY_BUFFER, numVertices * sizeof(Vertex), vertexData, GL_STATIC_DRAW);
+
+    glGenBuffers(1, &EBO);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, numIndices * sizeof(uint32_t), indexData, GL_STATIC_DRAW);
     
     glEnableVertexAttribArray(0);
     glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*) offsetof(struct Vertex, x));

VertexBuffer.h

@@ -6,7 +6,7 @@ class VertexBuffer {
 
 public:
 
-    VertexBuffer(void* data, uint32_t numVertices);
+    VertexBuffer(void *vertexData, void *indexData, uint32_t numVertices, uint32_t numIndices);
     ~VertexBuffer();
 
     void bind();
@@ -16,5 +16,6 @@ private:
 
     GLuint bufferId;
     GLuint VAO;
+    GLuint EBO;
 
 };