add engine version

1 files changed, 42 insertions, 0 deletions

diff --git a/engine-ocean/Graphics/GLWrappers/vao.h b/engine-ocean/Graphics/GLWrappers/vao.h
new file mode 100644
index 0000000..8f9bc6a
--- /dev/null
+++ b/engine-ocean/Graphics/GLWrappers/vao.h
@@ -0,0 +1,42 @@
+#pragma once
+
+#include "vbo.h"
+#include <memory>
+
+enum class VAOAttrib{
+    POS = 1,
+    NORM = 2,
+    UV = 4,
+    COLOR = 8
+};
+
+inline VAOAttrib operator|(VAOAttrib lhs, VAOAttrib rhs){
+    using VAOAttribType = std::underlying_type<VAOAttrib>::type;
+    return VAOAttrib(static_cast<VAOAttribType>(lhs) | static_cast<VAOAttribType>(rhs));
+}
+
+inline bool operator&(VAOAttrib lhs, VAOAttrib rhs){
+    using VAOAttribType = std::underlying_type<VAOAttrib>::type;
+    return static_cast<bool>(VAOAttrib(static_cast<VAOAttribType>(lhs) & static_cast<VAOAttribType>(rhs)));
+}
+
+class VAO
+{
+public:
+    VAO(std::shared_ptr<VBO> vbo, VAOAttrib attribs);
+    ~VAO();
+
+    void bind();
+    void unbind();
+    
+    void draw();
+
+private:
+    void addAttribute(GLuint attrib_index, GLint attrib_size);
+
+    std::shared_ptr<VBO> m_vbo; 
+    GLuint m_handle;
+    GLint m_curr_offset;
+    GLuint m_vert_size;
+
+};
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