VertexArray.cpp

#include "VertexArray.h"
#include "Common.h"

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

VertexArray::~VertexArray() {
	GLCall(glDeleteVertexArrays(1, &m_RendererID))
}

void VertexArray::AddBuffer(const VertexBuffer& vb, const 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);
		}
	}

}

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

void VertexArray::UnBind() const {
	GLCall(glBindVertexArray(0))
}