fix: imageCubeArray via core features + SRGB swapchain + LUT color conversion

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Three fixes:

1. imageCubeArray: enabled via VkPhysicalDeviceFeatures (core 1.0 feature)
   instead of VkPhysicalDeviceImageCubeArrayFeatures (wrong sType in pNext
   chain was interpreted as VkExternalMemoryImageCreateInfoNV)

2. Swapchain format: reverted to B8G8R8A8_SRGB (was UNORM which driver
   didn't support → fell back to A2B10G10R10 10-bit format=58 → wrong
   pixel layout for capture)

3. Video colors: SRGB→linear conversion via 256-entry LUT in
   ReadCapturedBuffer. SRGB swapchain gives gamma-compressed bytes,
   FFmpeg expects linear. LUT converts each B/G/R channel using
   standard SRGB formula: s<=0.04045 ? s/12.92 : ((s+0.055)/1.055)^2.4

Also: video captures before ImGui (no UI in recording)

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This commit is contained in:

emil28092005

2026-06-19 09:17:35 +03:00

parent d6939e9efa

commit 9531b1e9d5

3 changed files with 36 additions and 13 deletions

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Videos/cortex_20260619_091427.mp4

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