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Fix Vulkan decoder probing on Nvidia using KMSDRM

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This commit is contained in:
Cameron Gutman
2026-04-09 22:11:08 -05:00
parent 1fc1122c65
commit af03f57e08
1 changed files with 17 additions and 2 deletions
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19
app/streaming/streamutils.cpp
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@@ -87,15 +87,30 @@ Uint32 StreamUtils::getPlatformWindowFlags()
SDL_Window* StreamUtils::createTestWindow()
{
SDL_Window* testWindow;
Uint32 baseFlags = 0;
// Test windows are always hidden
baseFlags |= SDL_WINDOW_HIDDEN;
// Creating a Vulkan surface with KMSDRM requires finding a display mode
// that exactly matches the window size. This is not always possible,
// particularly with drivers (Nvidia) that only expose modes matching
// the current resolution (only differing by refresh rate). Fullscreen
// desktop mode ensures the window size exactly matches the display mode
// which prevents false Vulkan renderer failures during decoder probing.
if (QString(SDL_GetCurrentVideoDriver()) == "KMSDRM") {
baseFlags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
}
// Try to add the platform-specific flags first and fall back if that fails
testWindow = SDL_CreateWindow("", 0, 0, 1280, 720,
SDL_WINDOW_HIDDEN | StreamUtils::getPlatformWindowFlags());
baseFlags | StreamUtils::getPlatformWindowFlags());
if (!testWindow) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Failed to create test window with platform flags: %s",
SDL_GetError());
testWindow = SDL_CreateWindow("", 0, 0, 1280, 720, SDL_WINDOW_HIDDEN);
testWindow = SDL_CreateWindow("", 0, 0, 1280, 720, baseFlags);
if (!testWindow) {
return nullptr;
}