DX12Part4.txt

Fences:

Fences (and resource barriers) are the only sync primitives.
You can't discard resources if the GPU is using them.
Fences are required for frame buffering
You can only signal a fence at command list boundaries (not within).


sgnal fence:
 fence object, fence value
 
Windows event handle for CPU side synchronization.
Use cases:
GPU -> GPU
CPU -> GPU
GPU -> CPU

A fence is waited on by the GPU using the CommandQueue::Wait method.

For a matrix:
D3D12_INPUT_ELEMENT_DESC input_layout[] = {
	{"MATRIX", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
	{"MATRIX", 1, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
	{"MATRIX", 2, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
	{"MATRIX", 3, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0},
};