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Deprioritize the Nvidia VAAPI driver if Vulkan or CUDA are available

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This commit is contained in:
Cameron Gutman 2025-12-11 20:12:59 -06:00
commit de844f2a0c
1 changed files with 12 additions and 3 deletions
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15
app/streaming/video/ffmpeg-renderers/vaapi.cpp
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@ -442,10 +442,19 @@ VAAPIRenderer::initialize(PDECODER_PARAMETERS params)
return false;
}
// Prefer CUDA for XWayland and VDPAU for regular X11.
if (m_WindowSystem == SDL_SYSWM_X11 && vendorStr.contains("VA-API NVDEC", Qt::CaseInsensitive)) {
// Prefer Vulkan Video for Nvidia GPUs (and VDPAU for regular X11).
//
// We avoid the Nvidia VAAPI driver because:
// - It can hang in vaSyncSurface() during buffer import (older versions in particular)
// - The 16-bpc planar types cannot be imported into Vulkan due to incompatible DRM modifiers
// - EGL is broken in their driver, so we're stuck using the slow copy path in SDL renderer
if (
#if !defined(HAVE_LIBPLACEBO_VULKAN) && !defined(HAVE_CUDA)
m_WindowSystem == SDL_SYSWM_X11 &&
#endif
vendorStr.contains("VA-API NVDEC", Qt::CaseInsensitive)) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Deprioritizing VAAPI for NVIDIA driver on X11/XWayland. Set FORCE_VAAPI=1 to override.");
"Deprioritizing VAAPI for NVIDIA driver. Set FORCE_VAAPI=1 to override.");
return false;
}
}