From eb3e731e3a6a669ff4ee719c6350e7f38eacf2cd Mon Sep 17 00:00:00 2001
From: Vinicius Rangel <me@viniciusrangel.dev>
Date: Thu, 13 Mar 2025 12:30:35 -0300
Subject: [PATCH] handle games with abnormal aspect ratios

---
 src/video_core/renderer_vulkan/vk_presenter.cpp | 12 ++++++++----
 src/video_core/renderer_vulkan/vk_presenter.h   |  1 +
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/video_core/renderer_vulkan/vk_presenter.cpp b/src/video_core/renderer_vulkan/vk_presenter.cpp
index b909c8a92..4a6a5c7c2 100644
--- a/src/video_core/renderer_vulkan/vk_presenter.cpp
+++ b/src/video_core/renderer_vulkan/vk_presenter.cpp
@@ -315,6 +315,11 @@ Frame* Presenter::PrepareFrameInternal(VideoCore::ImageId image_id, bool is_eop)
     if (image_id != VideoCore::NULL_IMAGE_ID) {
         auto& image = texture_cache.GetImage(image_id);
         vk::Extent2D image_size = {image.info.size.width, image.info.size.height};
+        float ratio = (float)image_size.width / (float)image_size.height;
+        if (ratio != expected_ratio) {
+            expected_ratio = ratio;
+        }
+
         image.Transit(vk::ImageLayout::eShaderReadOnlyOptimal, vk::AccessFlagBits2::eShaderRead, {},
                       cmdbuf);
 
@@ -636,15 +641,14 @@ Frame* Presenter::GetRenderFrame() {
 }
 
 void Presenter::SetExpectedGameSize(s32 width, s32 height) {
-    constexpr float expectedRatio = 1920.0 / 1080.0f;
     const float ratio = (float)width / (float)height;
 
     expected_frame_height = height;
     expected_frame_width = width;
-    if (ratio > expectedRatio) {
-        expected_frame_width = static_cast<s32>(height * expectedRatio);
+    if (ratio > expected_ratio) {
+        expected_frame_width = static_cast<s32>(height * expected_ratio);
     } else {
-        expected_frame_height = static_cast<s32>(width / expectedRatio);
+        expected_frame_height = static_cast<s32>(width / expected_ratio);
     }
 }
 
diff --git a/src/video_core/renderer_vulkan/vk_presenter.h b/src/video_core/renderer_vulkan/vk_presenter.h
index 8b3bc75a9..ad2708474 100644
--- a/src/video_core/renderer_vulkan/vk_presenter.h
+++ b/src/video_core/renderer_vulkan/vk_presenter.h
@@ -125,6 +125,7 @@ private:
     void SetExpectedGameSize(s32 width, s32 height);
 
 private:
+    float expected_ratio{1920.0 / 1080.0f};
     u32 expected_frame_width{1920};
     u32 expected_frame_height{1080};