---
title: Why Vulkan — renderer rationale | Meridian
description: Why Meridian renders only through Vulkan 1.3: explicit pipelines map RDNA2 behavior with no fallback to maintain.
canonical: https://ps5emulatorwindows.com/diff/why-vulkan
updated: 2026-10-13
---

# Why Vulkan

One explicit renderer: RDNA2 maps cleanly, pipelines cache well, maintenance stays honest.

## Facts (2026-10-13)

- **Renderer:** Vulkan 1.3 only, no fallback
- **Mapping:** RDNA2 → SPIR-V pipelines
- **Cache:** Explicit pipelines persist per title
- **Cost:** One renderer maintained well

## The argument

Vulkan's explicit pipeline model matches how RDNA2 work is structured, so translation is mechanical rather than interpretive — [RDNA2 and SPIR-V](/lexicon/rdna2-spir-v). Explicit pipelines also persist cleanly, which is the entire [Shader cache](/reference/shader-cache) design.

A single renderer means every fix improves every title. A second renderer would halve maintenance and double the untested configurations behind each [Compat](/compat) rating.

## The trade-off, stated

- Vulkan 1.3 with current drivers is mandatory. Older GPUs cannot pass [Vulkan check](/reference/vulkan-check) by design.

- No DirectX or OpenGL fallback exists or is planned. The floor is the floor.

- The payoff: one well-tested path from your owned dump to a warmed cache. Own your library; 400+ titles indexed. Build: [Download Meridian](/download).

## FAQ

### Will Meridian add DirectX?

No. One explicit renderer is the design; a second would halve quality for no rating gain.

### Does Vulkan choice affect ratings?

Yes, positively: every rating run uses the same tested renderer, so results compare.

### What if my GPU lacks Vulkan 1.3?

It cannot run Meridian. The Vulkan floor is load-bearing — see [Hardware](/hardware).

## Related

- [Diff](https://ps5emulatorwindows.com/diff)
- [PS4 generation vs PS5](https://ps5emulatorwindows.com/diff/ps5-emulator-vs-ps4)
- [Vulkan check](https://ps5emulatorwindows.com/reference/vulkan-check)
- [How it works](https://ps5emulatorwindows.com/reference/how-ps5-emulator-works)
- [RDNA2 and SPIR-V](https://ps5emulatorwindows.com/lexicon/rdna2-spir-v)

## Download

Free Windows app: [Download Meridian](https://ps5emulatorwindows.com/download)

Markdown mirror: https://ps5emulatorwindows.com/diff/why-vulkan.md