VertexArray.cpp

#include"VertexArray.h"

#include"Renderer.h"

VertexArray::VertexArray() {
	GLCall(glGenVertexArrays(1, &m_RendererID));

}

VertexArray::~VertexArray() {
	GLCall(glDeleteVertexArrays(1, 0));

}

void VertexArray::Bind() const {
	GLCall(glBindVertexArray(m_RendererID));
}


void VertexArray::Unbind() const {
	GLCall(glBindVertexArray(0));
}

void VertexArray::AddBuffer(const VertexBuffer& vb, VertexBufferLayout& layout) {
	Bind();
	vb.Bind();
	const auto &elements = layout.GetElements();
	unsigned int offset = 0;
	for (unsigned int i = 0; i < elements.size(); ++i) {
		const auto &element = elements[i];
		GLCall(glEnableVertexAttribArray(i));
		GLCall(glVertexAttribPointer(i, element.count, element.type, 
			element.normalized,layout.GetStride(), (const void*)offset));
		offset += element.count * VertexBufferElement::GetSizeOfType(element.type);
	}
	

}