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Adds an option to destroy Vulkan old swapchain before

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Now it's possible to destroy the old swapchain before creating a new
one. It might make the swapchain creation a bit slower but with a
lower memory peak.
This commit is contained in:
Vladislav Belov 2025-11-10 00:06:52 +01:00
parent 8a64182ca2
commit c4bc6c9627
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GPG key ID: 353545E45DB9CCB3
2 changed files with 8 additions and 0 deletions
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1
binaries/data/config/default.cfg
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@ -138,6 +138,7 @@ renderer.backend.gl.enableframebufferinvalidating = false
renderer.backend.vulkan.disabledescriptorindexing = false
renderer.backend.vulkan.deviceindexoverride = -1
renderer.backend.vulkan.destroyoldswapchainbefore = false
renderer.backend.vulkan.debugbarrierafterframebufferpass = false
renderer.backend.vulkan.debugwaitidlebeforeacquire = false

7
source/renderer/backend/vulkan/Device.cpp
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@ -1039,6 +1039,13 @@ void CDevice::RecreateSwapChain()
{
vkDeviceWaitIdle(m_Device);
// It seems some drivers might not reuse the same swapchain memory. So
// to avoid higher memory peaks destroy the old swapchain before.
const bool destroyOldSwapchainBefore{
g_ConfigDB.Get("renderer.backend.vulkan.destroyoldswapchainbefore", false)};
if (destroyOldSwapchainBefore)
m_SwapChain.reset();
m_BackbufferReadbackTexture.reset();
// Since we know there is no GPU work in progress we can free resources