#include <blah/graphics/mesh.h>
#include "../internal/graphics_backend.h"

using namespace Blah;


MeshRef Mesh::create()
{
	return GraphicsBackend::create_mesh();
}

VertexFormat::VertexFormat(std::initializer_list<VertexAttribute> attributes, int stride)
{
	for (auto& it : attributes)
		this->attributes.push_back(it);

	if (stride <= 0)
	{
		stride = 0;

		for (auto& it : attributes)
		{
			switch (it.type)
			{
			case VertexType::Float: stride += 4; break;
			case VertexType::Float2: stride += 8; break;
			case VertexType::Float3: stride += 12; break;
			case VertexType::Float4: stride += 16; break;
			case VertexType::Byte4: stride += 4; break;
			case VertexType::UByte4: stride += 4; break;
			case VertexType::Short2: stride += 4; break;
			case VertexType::UShort2: stride += 4; break;
			case VertexType::Short4: stride += 8; break;
			case VertexType::UShort4: stride += 8; break;
			}
		}
	}

	this->stride = stride;
}