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libretro: Apply swapchain timing fix suggested in #21627

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See #21627
This commit is contained in:
Henrik Rydgård
2026-05-03 23:58:30 +02:00
parent 17fc029b5a
commit 733f886e98
1 changed files with 5 additions and 1 deletions
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libretro/libretro_vulkan.cpp
+5 -1
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@@ -40,6 +40,7 @@ struct VkSwapchainKHR_T {
std::mutex mutex;
std::condition_variable condVar;
int current_index;
bool ever_presented = false;
};
static VkSwapchainKHR_T chain;
@@ -252,6 +253,7 @@ static VKAPI_ATTR VkResult VKAPI_CALL vkCreateSwapchainKHR_libretro(VkDevice dev
}
chain.current_index = -1;
chain.ever_presented = false;
*pSwapchain = (VkSwapchainKHR)&chain;
return VK_SUCCESS;
@@ -291,6 +293,7 @@ static VKAPI_ATTR VkResult VKAPI_CALL vkQueuePresentKHR_libretro(VkQueue queue,
#else
vulkan->set_image(vulkan->handle, &swapchain->images[pPresentInfo->pImageIndices[0]].retro_image, 0, nullptr, vulkan->queue_index);
#endif
chain.ever_presented = true;
swapchain->condVar.notify_all();
return VK_SUCCESS;
@@ -298,7 +301,7 @@ static VKAPI_ATTR VkResult VKAPI_CALL vkQueuePresentKHR_libretro(VkQueue queue,
void vk_libretro_wait_for_presentation() {
std::unique_lock<std::mutex> lock(chain.mutex);
if (chain.current_index < 0)
if (chain.ever_presented && chain.current_index < 0)
chain.condVar.wait(lock);
#if 0
chain.current_index = -1;
@@ -319,6 +322,7 @@ static VKAPI_ATTR void VKAPI_CALL vkDestroySwapchainKHR_libretro(VkDevice device
memset(&chain.images, 0x00, sizeof(chain.images));
chain.count = 0;
chain.current_index = -1;
chain.ever_presented = false;
}
VKAPI_ATTR VkResult VKAPI_CALL vkQueueSubmit_libretro(VkQueue queue, uint32_t submitCount, const VkSubmitInfo *pSubmits, VkFence fence) {