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mirror of https://github.com/Nexoniarz/Fry3DX.git synced 2026-11-03 04:24:26 +00:00
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Phones: sideways only; back from the background the Vulkan surface is made again (it was lost), the work saved on the way out and carried on with on the next start if the phone closed it

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-21 00:16:22 +02:00
commit a79a6c9020
9 changed files with 87 additions and 2 deletions
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24
engine/rhi/vulkan/vk_device.cpp
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@ -263,6 +263,24 @@ bool Device::createSwapchain() {
return true;
}
// A new surface on the window as it is now (Android makes a new one each time the app comes back).
bool Device::recreateSurface() {
vkDeviceWaitIdle(device_);
destroySwapchainViews();
if (swapchain_) vkDestroySwapchainKHR(device_, swapchain_, nullptr), swapchain_ = VK_NULL_HANDLE;
if (surface_) vkDestroySurfaceKHR(instance_, surface_, nullptr), surface_ = VK_NULL_HANDLE;
if (!SDL_Vulkan_CreateSurface(window_->handle(), instance_, nullptr, &surface_)) {
log::warn("SDL_Vulkan_CreateSurface (again): {}", SDL_GetError());
surface_ = VK_NULL_HANDLE;
return false; // (tried again next frame)
}
VkBool32 present = VK_FALSE;
vkGetPhysicalDeviceSurfaceSupportKHR(physical_, queueFamily_, surface_, &present);
if (!present) log::warn("The new surface can't be presented to from this queue");
surfaceLost_ = false;
return createSwapchain();
}
void Device::destroySwapchainViews() {
for (VkImageView v : views_) vkDestroyImageView(device_, v, nullptr);
for (VkSemaphore s : renderDone_) vkDestroySemaphore(device_, s, nullptr);
@ -271,6 +289,7 @@ void Device::destroySwapchainViews() {
}
VkCommandBuffer Device::beginFrame() {
if (surfaceLost_ && !recreateSurface()) return nullptr;
if (swapchainDirty_ && !createSwapchain()) return nullptr;
Frame& f = frames_[frameIndex_];
@ -280,6 +299,10 @@ VkCommandBuffer Device::beginFrame() {
swapchainDirty_ = true;
return nullptr;
}
if (r == VK_ERROR_SURFACE_LOST_KHR) {
surfaceLost_ = true;
return nullptr;
}
if (r != VK_SUBOPTIMAL_KHR) VK_CHECK(r);
VK_CHECK(vkResetFences(device_, 1, &f.inFlight));
@ -328,6 +351,7 @@ void Device::endFrame() {
}
#endif
if (r == VK_ERROR_OUT_OF_DATE_KHR || r == VK_SUBOPTIMAL_KHR) swapchainDirty_ = true;
else if (r == VK_ERROR_SURFACE_LOST_KHR) surfaceLost_ = true;
else VK_CHECK(r);
frameIndex_ = (frameIndex_ + 1) % kFramesInFlight;