Improved efficiency promises even better visuals and a faster gaming performance, overall. The overall effect shouldn’t be noticeable to the gamer, but it makes the computer’s job much more efficient. So, by reducing the shading rate of numerous pixels per frame, GPU workload is decreased, increasing performance.” For example, black pixels in a shadow look no different when the shading rate is reduced. “Developer-made algorithms identify pixels that the player can’t easily see and pixels that infrequently change or update, and use VRS to reduce the rate at which they are rendered (shaded).
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It’s important that you see the car in front of you in full detail, but that tree or fence whipping by doesn’t need the same treatment. Imagine driving a car down the road in Forza Horizon or another racing game, for example. It shades the important parts of a gaming scene at full resolution, while the less important objects use less GPU power for shading. That process can be computationally expensive, however, which is where variable rate shading comes in. Shaders tell the system what each pixel’s coloring, brightness, and contrast should be. Variable Rate Shading is another feature that was already in DX12. RELATED: What Does Real-Time Ray Tracing Mean for Gamers Today? Variable Rate Shading There will also be an option that gives game developers more control over ray tracing, rather than leaving it up to the system.
With DX12 Ultimate, ray-tracing effects are supposed to be more efficient. It shows ray tracing in Minecraft, and the difference is insane. Be sure to check out the video above from NVIDIA. This means more realistic reflections and refraction in water, shafts of sunlight that look more photo-realistic, and shadows with greater visual depth.
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