a command buffer.
an array of texture subresources with corresponding clear values and load/store ops.
the number of color targets in the color_target_infos array.
a texture subresource with corresponding clear value and load/store ops, may be NULL.
A render pass handle.
Begins a render pass on a command buffer.
A render pass consists of a set of texture subresources (or depth slices in the 3D texture case) which will be rendered to during the render pass, along with corresponding clear values and load/store operations. All operations related to graphics pipelines must take place inside of a render pass. A default viewport and scissor state are automatically set when this is called. You cannot begin another render pass, or begin a compute pass or copy pass until you have ended the render pass.