From dd80702913e1b75d81af4192a709c9f02209a962 Mon Sep 17 00:00:00 2001
From: Yamagi <yamagi@yamagi.org>
Date: Fri, 23 Apr 2021 13:47:39 +0200
Subject: [PATCH] Add a function `QVk_CheckExtent()` to query the extent state.

This will be used to detect if we've got an extent size of 0x0 because
the window has been maximized.
---
 src/client/refresh/vk/header/qvk.h   |  1 +
 src/client/refresh/vk/vk_swapchain.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/src/client/refresh/vk/header/qvk.h b/src/client/refresh/vk/header/qvk.h
index 7c163c60..fb58d286 100644
--- a/src/client/refresh/vk/header/qvk.h
+++ b/src/client/refresh/vk/header/qvk.h
@@ -315,6 +315,7 @@ void		QVk_DrawTexRect(const float *ubo, VkDeviceSize uboSize, qvktexture_t *text
 void		QVk_BindPipeline(qvkpipeline_t *pipeline);
 void		QVk_SubmitStagingBuffers(void);
 void		Qvk_MemoryBarrier(VkCommandBuffer cmdBuffer, VkPipelineStageFlags srcStageMask, VkPipelineStageFlags dstStageMask, VkAccessFlags srcAccessMask, VkAccessFlags dstAccessMask);
+qboolean	QVk_CheckExtent(void);
 
 // debug label related functions
 void		QVk_DebugSetObjectName(uint64_t obj, VkObjectType objType, const char *objName);
diff --git a/src/client/refresh/vk/vk_swapchain.c b/src/client/refresh/vk/vk_swapchain.c
index 65c7436f..2ee91dec 100644
--- a/src/client/refresh/vk/vk_swapchain.c
+++ b/src/client/refresh/vk/vk_swapchain.c
@@ -127,6 +127,19 @@ static VkCompositeAlphaFlagBitsKHR getSupportedCompositeAlpha(VkCompositeAlphaFl
 	return VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR;
 }
 
+qboolean QVk_CheckExtent(void)
+{
+	VkSurfaceCapabilitiesKHR surfaceCaps;
+	VK_VERIFY(vkGetPhysicalDeviceSurfaceCapabilitiesKHR(vk_device.physical, vk_surface, &surfaceCaps));
+
+	if (surfaceCaps.currentExtent.width == 0 || surfaceCaps.currentExtent.height == 0)
+	{
+		return false;
+	}
+
+	return true;
+}
+
 VkResult QVk_CreateSwapchain()
 {
 	VkSurfaceCapabilitiesKHR surfaceCaps;