From 1c30bc92bb49b67631abcccda884bab141f9ccb6 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Fri, 23 Aug 2024 14:39:56 +0200
Subject: [PATCH] [d3d11] Validate viewport parameters

And skip invalid calls. Fixes Senran Kagura Peach Ball.
---
 src/d3d11/d3d11_context.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/d3d11/d3d11_context.cpp b/src/d3d11/d3d11_context.cpp
index b1399b7c120..8107bcb8ab7 100644
--- a/src/d3d11/d3d11_context.cpp
+++ b/src/d3d11/d3d11_context.cpp
@@ -2422,6 +2422,17 @@ namespace dxvk {
     if (unlikely(NumViewports > m_state.rs.viewports.size()))
       return;
 
+    for (uint32_t i = 0; i < NumViewports; i++) {
+      const D3D11_VIEWPORT& vp = pViewports[i];
+
+      bool valid = vp.Width >= 0.0f && vp.Height >= 0.0f
+                && vp.MinDepth >= 0.0f && vp.MaxDepth <= 1.0f
+                && vp.MinDepth <= vp.MaxDepth;
+
+      if (!valid)
+        return;
+    }
+
     bool dirty = m_state.rs.numViewports != NumViewports;
     m_state.rs.numViewports = NumViewports;