SDL: Only use VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR on Android

SDL Commits
1 
From 2c7c3d4d7b86921fa03b071e7f9082779480dac3 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sun, 2 Mar 2025 09:12:48 -0800
Subject: [PATCH] Only use VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR on Android

This fixes Nintendo Switch where the identity bit isn't available. We only needed this on Android to automatically handle device user orientation.
---
 src/gpu/vulkan/SDL_gpu_vulkan.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gpu/vulkan/SDL_gpu_vulkan.c b/src/gpu/vulkan/SDL_gpu_vulkan.c
index 3014b4b3bb3e3..ad08cf352e6bc 100644
--- a/src/gpu/vulkan/SDL_gpu_vulkan.c
+++ b/src/gpu/vulkan/SDL_gpu_vulkan.c
@@ -4634,7 +4634,11 @@ static Uint32 VULKAN_INTERNAL_CreateSwapchain(
     swapchainCreateInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
     swapchainCreateInfo.queueFamilyIndexCount = 0;
     swapchainCreateInfo.pQueueFamilyIndices = NULL;
+#ifdef SDL_PLATFORM_ANDROID
     swapchainCreateInfo.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+#else
+    swapchainCreateInfo.preTransform = swapchainSupportDetails.capabilities.currentTransform;
+#endif
     swapchainCreateInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
     swapchainCreateInfo.presentMode = SDLToVK_PresentMode[windowData->presentMode];
     swapchainCreateInfo.clipped = VK_TRUE;