feat(VAO): add VAO config

inc/VAO.hpp

@@ -0,0 +1,23 @@
+#ifndef VAO_HPP
+#define VAO_HPP
+
+#include <gl/glew.h>
+
+class VAO
+{
+private:
+    unsigned int id;
+
+public:
+    VAO();
+    ~VAO();
+
+    void bind();
+    void unbind();
+
+    void setAttributePointer(GLuint index, GLuint size, GLenum type, GLsizei stride, const void* offset);
+    void drawElement(GLenum mode, GLsizei count, GLenum type, const void *indices);
+    void drawArray(GLenum mode, GLint first, GLsizei count);
+};
+
+#endif

src/VAO.cpp

@@ -0,0 +1,40 @@
+#include "VAO.hpp"
+
+VAO::VAO()
+{
+    glGenVertexArrays(1, &id);
+}
+
+VAO::~VAO()
+{
+    glDeleteVertexArrays(1, &id);
+}
+
+void VAO::bind()
+{
+    glBindVertexArray(id);
+}
+
+void VAO::unbind()
+{
+    glBindVertexArray(0);
+}
+
+void VAO::setAttributePointer(GLuint index, GLuint size, GLenum type, GLsizei stride, const void* offset)
+{
+    bind();
+    glEnableVertexAttribArray(index);
+    glVertexAttribPointer(index, size, type, GL_FALSE, stride, offset);
+}
+
+void VAO::drawElement(GLenum mode, GLsizei count, GLenum type, const void* indices)
+{
+    bind();
+    glDrawElements(mode, count, type, indices);
+}
+
+void VAO::drawArray(GLenum mode, GLint first, GLsizei count)
+{
+    bind();
+    glDrawArrays(mode, first, count);
+}