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| author | Laszlo Agocs <laszlo.agocs@qt.io> | 2021-01-04 14:38:35 +0100 |
|---|---|---|
| committer | Qt Cherry-pick Bot <cherrypick_bot@qt-project.org> | 2021-01-05 09:23:24 +0000 |
| commit | 2c3fabfafd6064e0678e52d211da4364e996ad13 (patch) | |
| tree | e00731b1613a5c07b6fd3b99965255e447775d96 /src/gui | |
| parent | 1176959b47ef81833998d41b822290d2788f9a4b (diff) | |
Handle maxImageCount 0 in QVulkanWindow
Take the logic we use in QRhi's Vulkan backend.
Fixes: QTBUG-85791
Change-Id: Ifdc2b3d351af71fbc86e20abcede902303e41fc4
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
(cherry picked from commit f6cb24f4c0f1f48f9010ba78670577ff5643132f)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Diffstat (limited to 'src/gui')
| -rw-r--r-- | src/gui/vulkan/qvulkanwindow.cpp | 8 | ||||
| -rw-r--r-- | src/gui/vulkan/qvulkanwindow_p.h | 2 |
2 files changed, 6 insertions, 4 deletions
diff --git a/src/gui/vulkan/qvulkanwindow.cpp b/src/gui/vulkan/qvulkanwindow.cpp index 8f6d32b89e..c4316d453b 100644 --- a/src/gui/vulkan/qvulkanwindow.cpp +++ b/src/gui/vulkan/qvulkanwindow.cpp @@ -1043,9 +1043,11 @@ void QVulkanWindowPrivate::recreateSwapChain() VkPhysicalDevice physDev = physDevs.at(physDevIndex); VkSurfaceCapabilitiesKHR surfaceCaps; vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physDev, surface, &surfaceCaps); - uint32_t reqBufferCount = swapChainBufferCount; - if (surfaceCaps.maxImageCount) - reqBufferCount = qBound(surfaceCaps.minImageCount, reqBufferCount, surfaceCaps.maxImageCount); + uint32_t reqBufferCount; + if (surfaceCaps.maxImageCount == 0) + reqBufferCount = qMax<uint32_t>(2, surfaceCaps.minImageCount); + else + reqBufferCount = qMax(qMin<uint32_t>(surfaceCaps.maxImageCount, 3), surfaceCaps.minImageCount); VkExtent2D bufferSize = surfaceCaps.currentExtent; if (bufferSize.width == uint32_t(-1)) { diff --git a/src/gui/vulkan/qvulkanwindow_p.h b/src/gui/vulkan/qvulkanwindow_p.h index da9b5c9ae4..4f0d8f606e 100644 --- a/src/gui/vulkan/qvulkanwindow_p.h +++ b/src/gui/vulkan/qvulkanwindow_p.h @@ -132,7 +132,7 @@ public: // rendering thread will get throttled to the presentation rate (vsync). // This is in effect Example 5 from the VK_KHR_swapchain spec. VkPresentModeKHR presentMode = VK_PRESENT_MODE_FIFO_KHR; - int swapChainBufferCount = 2; + int swapChainBufferCount = 0; int frameLag = 2; QSize swapChainImageSize; |