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Redirect Intel GPUs to Vulkan on auto graphics API mode. #1491

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Merged
blueskythlikesclouds merged 1 commit into from
Mar 30, 2025
Merged

Redirect Intel GPUs to Vulkan on auto graphics API mode. #1491

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24 changes: 19 additions & 5 deletions UnleashedRecomp/gpu/video.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1712,18 +1712,32 @@ bool Video::CreateHostDevice(const char *sdlVideoDriver, bool graphicsApiRetry)
#ifdef UNLEASHED_RECOMP_D3D12
if (interfaceFunction == CreateD3D12Interface)
{
bool redirectToVulkan = false;

if (deviceDescription.vendor == RenderDeviceVendor::AMD)
{
// AMD Drivers before this version have a known issue where MSAA resolve targets will fail to work correctly.
// If no specific graphics API was selected, we silently destroy this one and move to the next option as it'll
// just work incorrectly otherwise and result in visual glitches and 3D rendering not working in general.
constexpr uint64_t MinimumAMDDriverVersion = 0x1F00005DC2005CULL; // 31.0.24002.92
if ((Config::GraphicsAPI == EGraphicsAPI::Auto) && (deviceDescription.driverVersion < MinimumAMDDriverVersion))
{
g_device.reset();
g_interface.reset();
continue;
}
redirectToVulkan = true;
}
else if (deviceDescription.vendor == RenderDeviceVendor::INTEL)
{
// Intel drivers on D3D12 are extremely buggy, introducing various graphical glitches.
// We will redirect users to Vulkan until a workaround can be found.
if (Config::GraphicsAPI == EGraphicsAPI::Auto)
redirectToVulkan = true;
}

// Allow redirection to Vulkan only if we are not retrying after a crash,
// so the user can at least boot the game with D3D12 if Vulkan fails to work.
if (!graphicsApiRetry && redirectToVulkan)
{
g_device.reset();
g_interface.reset();
continue;
}

// Hardware resolve seems to be completely bugged on Intel D3D12 drivers.
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