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vulkan: Set VK_SWAPCHAIN_CREATE_DEFERRED_MEMORY_ALLOCATION_BIT_EXT

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It seems Mesa doesn't support that yet, but having it doesn't hurt.

And it allows drivers to allocate less memory for the swapchains,
because we don't need all the 4 images we request in minImageCount.
But drivers tend to take that minimum image count as gospel, so we need
to use a higher number to not cause lag in corner cases.
This commit is contained in:
Benjamin Otte 2024-09-04 21:12:57 +02:00
parent 6c72a223f5
commit ffae0010c4
1 changed files with 3 additions and 2 deletions
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5
gdk/gdkvulkancontext.c
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@ -467,8 +467,9 @@ gdk_vulkan_context_check_swapchain (GdkVulkanContext *context,
res = GDK_VK_CHECK (vkCreateSwapchainKHR, device,
&(VkSwapchainCreateInfoKHR) {
.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
.pNext = NULL,
.flags = 0,
.flags =
(gdk_vulkan_context_has_feature (context, GDK_VULKAN_FEATURE_SWAPCHAIN_MAINTENANCE) ?
VK_SWAPCHAIN_CREATE_DEFERRED_MEMORY_ALLOCATION_BIT_EXT : 0),
.surface = priv->surface,
.minImageCount = CLAMP (4,
capabilities.minImageCount,