Binding vertex buffers

When we draw a geometry, we need to specify data for vertices. At the very least, vertex positions are required, but we can specify other attributes such as normal, tangent or bitangent vectors, colors, or texture coordinates. This data comes from buffers created with a vertex buffer usage. We need to bind these buffers to specified bindings before we can issue drawing commands.

Getting ready

In this recipe, a custom VertexBufferParameters type is introduced. It has the following definition:

struct VertexBufferParameters { 
  VkBuffer      Buffer; 
  VkDeviceSize  MemoryOffset; 
};

This type is used to specify the buffer's parameters: its handle (in the Buffer member) and an offset from the start of the buffer's memory from which data should be taken (in the MemoryOffset member).

How to do it...

1. Take the handle of a command buffer that is in a recording state and use it to initialize a variable of type VkCommandBuffer named command_buffer.
2. Create a variable of type std::vector...