Heavy buffer update, window update, object tracking

engine/NBGraphics/src/Mesh.cpp

@@ -0,0 +1,73 @@
+#pragma clang diagnostic ignored "-Wint-to-pointer-cast"
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
+
+#include <NBGraphics/Mesh.hpp>
+
+namespace nb{
+
+// class Mesh
+Mesh::Mesh(
+    VertexDataPointerList vertexdata_,
+    unsigned int count_,
+    GLenum primitive_
+) : 
+    _primitive(primitive_),
+    _count(count_),
+    _vao(std::make_shared<VAO>(vertexdata_))
+{}
+
+Mesh::Mesh(
+    GLenum primitive_,
+    const std::shared_ptr<VAO>& vao_,
+    unsigned int count_
+) :
+    _primitive(primitive_),
+    _count(count_),
+    _vao(vao_)
+{}
+
+Mesh::Mesh(
+    GLenum primitive_,
+    const VertexData& vertex_data_,
+    unsigned int count_
+) : Mesh(primitive_, std::make_shared<VAO>(), count_) {
+    _vao->attributes({vertex_data_});
+}
+
+Mesh::Mesh(
+    GLenum primitive_,
+    const ByteVector& data_,
+    unsigned int count_,
+    const std::vector<VertexAttribute>& attributes_
+) : Mesh(
+    primitive_,
+    VertexData(data_, attributes_),  
+    count_
+) {}
+
+void Mesh::draw(unsigned int offset, unsigned int count) const {
+    _vao->bind();
+    OPENGL_CALL(
+        glDrawArrays(_primitive, offset, count);
+    );
+}
+
+// class InstancedMesh
+
+void InstancedMesh::draw(unsigned int offset, unsigned instancecount) const {
+    _vao->bind();
+    OPENGL_CALL(
+        glDrawArraysInstanced(_primitive, 0, _count, instancecount);
+    );
+}
+
+// class IndexMeshes
+
+void IndexedMesh::draw(unsigned int offset, unsigned numindices) const {
+    _vao->bind();
+    OPENGL_CALL(
+        glDrawElements(Mesh::_primitive, _count, _ebo->datatype(), (void*)offset)
+    );
+} 
+
+} // namespace nb