Function create_block

source/effect_codegen_hlsl.cpp:2106–2115

	}

	id   create_block() override
	{
		const id res = make_id();

		std::string &block = _blocks.emplace(res, std::string()).first->second;
		// Reserve a decently big enough memory block to avoid frequent reallocations
		block.reserve(4096);

		return res;
	}
	id   set_block(id id) override
	{
		_last_block = _current_block;