---
title: "VKD3D-Proton Merges Vulkan Descriptor Heap Support"
url: https://daily.dev/posts/vkd3d-proton-merges-vulkan-descriptor-heap-support-p0ceaiuc6
source_url: https://www.phoronix.com/news/VKD3D-Proton-Descriptor-Heaps
type: article
source: "Phoronix"
published: 2026-05-27T17:11:20.986Z
updated: 2026-05-27T17:22:11.899Z
tags: ["gaming", "vulkan"]
reading_time: 2
upvotes: 0
comments: 0
language: en
---

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# VKD3D-Proton Merges Vulkan Descriptor Heap Support

**[Phoronix](https://daily.dev/sources/phoronix)** · 2 min read · 0 upvotes · 0 comments

## Summary

VKD3D-Proton, Valve's Direct3D 12 over Vulkan translation layer for Steam Play (Proton), has merged support for the VK_EXT_descriptor_heap Vulkan extension. This extension, introduced in Vulkan 1.4.340 in January, enables explicit management of descriptor heaps and addresses limitations of the older VK_EXT_descriptor_buffer. The merge follows GPU driver support landing in NVIDIA's Linux driver, RADV (Mesa 26.1), and experimentally in Intel's ANV driver. The feature is currently hidden behind a VKD3D_CONFIG=descriptor_heap flag due to remaining NVIDIA bugs, but its inclusion signals a significant upcoming improvement to Proton gaming performance. Legacy code paths are retained for now, with plans to remove them once heap support is stable across all GPUs.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.phoronix.com/news/VKD3D-Proton-Descriptor-Heaps>

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Tags: [#gaming](https://daily.dev/tags/gaming), [#vulkan](https://daily.dev/tags/vulkan)

[View this post on daily.dev](https://daily.dev/posts/vkd3d-proton-merges-vulkan-descriptor-heap-support-p0ceaiuc6)