From 2f8fbf91146621dda43bfce9d216d94bf8e743a3 Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Fri, 7 Feb 2020 18:53:47 +0000
Subject: [PATCH] [d3d9] Use linear sampler for upscaling if extents don't
 match on Present

---
 src/d3d9/d3d9_swapchain.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/d3d9/d3d9_swapchain.cpp b/src/d3d9/d3d9_swapchain.cpp
index 65bcaccfe..60ea67e2f 100644
--- a/src/d3d9/d3d9_swapchain.cpp
+++ b/src/d3d9/d3d9_swapchain.cpp
@@ -698,6 +698,11 @@ namespace dxvk {
 
       m_context->setViewports(1, &viewport, &scissor);
 
+      // Use an appropriate texture filter depending on whether
+      // the back buffer size matches the swap image size
+      bool fitSize = swapImage->info().extent.width  == info.imageExtent.width
+                  && swapImage->info().extent.height == info.imageExtent.height;
+
       D3D9PresentInfo presentInfoConsts;
       presentInfoConsts.scale[0]  = float(m_srcRect.right  - m_srcRect.left) / float(swapImage->info().extent.width);
       presentInfoConsts.scale[1]  = float(m_srcRect.bottom - m_srcRect.top)  / float(swapImage->info().extent.height);
@@ -716,7 +721,7 @@ namespace dxvk {
       m_context->setInputAssemblyState(m_iaState);
       m_context->setInputLayout(0, nullptr, 0, nullptr);
 
-      m_context->bindResourceSampler(BindingIds::Image, m_samplerFitting);
+      m_context->bindResourceSampler(BindingIds::Image, fitSize ? m_samplerFitting : m_samplerScaling);
       m_context->bindResourceSampler(BindingIds::Gamma, m_gammaSampler);
 
       m_context->bindResourceView(BindingIds::Image, swapImageView, nullptr);