D3D12

Overview

The D3D12 driver is a Gallium driver that emits API calls for Microsoft's :abbr:D3D12 (Direct3D 12) API instead of targeting a specific GPU architecture. This can be used to get full desktop OpenGL 3.3 support on devices that only support D3D12.

Debugging

There's a few tools that are useful for debugging D3D12, such as these environment variables:

.. envvar:: D3D12_DEBUG ("")

verbose Enable verbose output to stdout blit Trace blit and copy resource calls experimental Enable experimental shader models feature dxil Dump DXIL during program compile disass Dump disassambly of created DXIL shader res Debug resources debuglayer Enable debug layer_ gpuvalidator Enable GPU validator_

.. envvar:: DXIL_DEBUG ("")

verbose Enable verbose output to stdout dump_blob Write shader blobs trace Trace instruction conversion dump_module dump module tree to stderr

.. _debug layer: https://docs.microsoft.com/en-us/windows/win32/direct3d12/understanding-the-d3d12-debug-layer .. _GPU validator: https://docs.microsoft.com/en-us/windows/win32/direct3d12/using-d3d12-debug-layer-gpu-based-validation