From 3920502547aedff9d0699b6f92f65eb0bc7a50c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Sun, 12 Jul 2026 00:00:47 -0700
Subject: [PATCH] VK: Mark BGRA8/RGBA8 as valid backbuffer texture formats when
 in headless mode. (#3824)

---
 src/renderer_vk.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/renderer_vk.cpp b/src/renderer_vk.cpp
index ba43e7b32..aa4bdbb4b 100644
--- a/src/renderer_vk.cpp
+++ b/src/renderer_vk.cpp
@@ -2198,6 +2198,19 @@ VK_IMPORT_DEVICE
 						}
 					}
 				}
+				else
+				{
+					static const TextureFormat::Enum headlessBackbufferFormats[] =
+					{
+						TextureFormat::BGRA8,
+						TextureFormat::RGBA8,
+					};
+
+					for (uint32_t ii = 0; ii < BX_COUNTOF(headlessBackbufferFormats); ++ii)
+					{
+						g_caps.formats[headlessBackbufferFormats[ii] ] |= BGFX_CAPS_FORMAT_TEXTURE_BACKBUFFER;
+					}
+				}
 			}
 
 			errorState = ErrorState::SwapChainCreated;