SDL: GPU: Request sampleRateShading feature on Vulkan

SDL Commits
1 
From 6f456da63f398a16be17f72a0898b59835cbe386 Mon Sep 17 00:00:00 2001
From: Eri the Switch <[EMAIL REDACTED]>
Date: Wed, 19 Mar 2025 04:12:43 +0300
Subject: [PATCH] GPU: Request sampleRateShading feature on Vulkan

---
 include/SDL3/SDL_gpu.h          | 1 +
 src/gpu/vulkan/SDL_gpu_vulkan.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/SDL3/SDL_gpu.h b/include/SDL3/SDL_gpu.h
index 26901c8edb1c8..dd922cd39ca51 100644
--- a/include/SDL3/SDL_gpu.h
+++ b/include/SDL3/SDL_gpu.h
@@ -222,6 +222,7 @@
  * - `depthClamp`
  * - `shaderClipDistance`
  * - `drawIndirectFirstInstance`
+ * - `sampleRateShading`
  *
  * **D3D12:** Supported on Windows 10 or newer, Xbox One (GDK), and Xbox
  * Series X|S (GDK). Requires a GPU that supports DirectX 12 Feature Level
diff --git a/src/gpu/vulkan/SDL_gpu_vulkan.c b/src/gpu/vulkan/SDL_gpu_vulkan.c
index 5803a7aedc7d9..c63c4884b3cfc 100644
--- a/src/gpu/vulkan/SDL_gpu_vulkan.c
+++ b/src/gpu/vulkan/SDL_gpu_vulkan.c
@@ -11132,7 +11132,8 @@ static Uint8 VULKAN_INTERNAL_IsDeviceSuitable(
         !deviceFeatures.imageCubeArray ||
         !deviceFeatures.depthClamp ||
         !deviceFeatures.shaderClipDistance ||
-        !deviceFeatures.drawIndirectFirstInstance) {
+        !deviceFeatures.drawIndirectFirstInstance ||
+        !deviceFeatures.sampleRateShading) {
         return 0;
     }
 
@@ -11379,6 +11380,7 @@ static Uint8 VULKAN_INTERNAL_CreateLogicalDevice(
     desiredDeviceFeatures.depthClamp = VK_TRUE;
     desiredDeviceFeatures.shaderClipDistance = VK_TRUE;
     desiredDeviceFeatures.drawIndirectFirstInstance = VK_TRUE;
+    desiredDeviceFeatures.sampleRateShading = VK_TRUE;
 
     if (haveDeviceFeatures.fillModeNonSolid) {
         desiredDeviceFeatures.fillModeNonSolid = VK_TRUE;