AMD in a GPUOpen blog post showed off some "super early" performance numbers for a Radeon RX 7900 XTX GPU rendering a DirectX 12 workload using Work Graphs, instead of the traditional ExecuteIndirect method. Work Graphs is method by with GPUs enjoy greater autonomy in executing render and general purpose compute workloads, by vastly reducing the role of the CPU in the rendering pipeline. At the ongoing GDC 2024, AMD showed off a performance demo of a DirectX 12 rendering workload that implements Work Graphs, running in sync with Mesh Nodes, a feature that will process draw calls while the rest of the graph is executing. This is compared its render times to the traditional method. The differences are staggering.

It takes the traditional ExecuteIndirect method 64% longer to render a frame compared to Work Graphs, in other words, the new method is 39% faster. This has a direct impact on frame-rates for applications that implement Work Graphs. Although not part of the demo, AMD RDNA 3 also implement a silicon-level acceleration for Multi-draw indirect, another API-level feature that's underutilized. AMD's demo showcases a 3D scene without the HUD UI and skybox, being rendered on a single work graph dispatch. Work Graphs and Mesh Nodes are the next big feature addition to the DirectX 12 API feature-set, which will begin rolling out later this year. Both AMD and NVIDIA have ongoing implementation efforts to implement it.