From efea99b87c312a225b57f7d9fe8b47898933e10d Mon Sep 17 00:00:00 2001
From: Magnus Norddahl <dpjudas@users.noreply.github.com>
Date: Mon, 4 Sep 2023 14:47:55 +0200
Subject: [PATCH] Only recreate lightmap texture if its size changes

---
 src/common/rendering/vulkan/textures/vk_texture.cpp | 8 +++++++-
 src/common/rendering/vulkan/textures/vk_texture.h   | 2 ++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/common/rendering/vulkan/textures/vk_texture.cpp b/src/common/rendering/vulkan/textures/vk_texture.cpp
index 13b5cb37b8..b37f53197a 100644
--- a/src/common/rendering/vulkan/textures/vk_texture.cpp
+++ b/src/common/rendering/vulkan/textures/vk_texture.cpp
@@ -189,8 +189,14 @@ void VkTextureManager::CreateLightmap()
 	SetLightmap(1, 1, data);
 }
 
-void VkTextureManager::CreateLightmap(int LMTextureSize, int LMTextureCount)
+void VkTextureManager::CreateLightmap(int newLMTextureSize, int newLMTextureCount)
 {
+	if (LMTextureSize == newLMTextureSize && LMTextureCount == newLMTextureCount)
+		return;
+
+	LMTextureSize = newLMTextureSize;
+	LMTextureCount = newLMTextureCount;
+
 	int w = LMTextureSize;
 	int h = LMTextureSize;
 	int count = LMTextureCount;
diff --git a/src/common/rendering/vulkan/textures/vk_texture.h b/src/common/rendering/vulkan/textures/vk_texture.h
index a2aa04bd87..da609b5b1d 100644
--- a/src/common/rendering/vulkan/textures/vk_texture.h
+++ b/src/common/rendering/vulkan/textures/vk_texture.h
@@ -40,6 +40,8 @@ public:
 
 	VkTextureImage Shadowmap;
 	VkTextureImage Lightmap;
+	int LMTextureSize = 0;
+	int LMTextureCount = 0;
 
 private:
 	void CreateNullTexture();