From eddbe73ba4d48453d5e277526ba33c0b75e021ad Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Tue, 9 Aug 2022 02:44:05 +0200
Subject: [PATCH] [dxbc] Fix off-by-one error for primitive vertex counts

Not sure if it's even possible to use this, but this was clearly a bug.
---
 src/dxbc/dxbc_util.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/dxbc/dxbc_util.cpp b/src/dxbc/dxbc_util.cpp
index 848f8ad7..3d885fc9 100644
--- a/src/dxbc/dxbc_util.cpp
+++ b/src/dxbc/dxbc_util.cpp
@@ -15,11 +15,11 @@ namespace dxvk {
     };
     
     if (primitive >= DxbcPrimitive::Patch1) {
-      return static_cast<uint32_t>(primitive)
-           - static_cast<uint32_t>(DxbcPrimitive::Patch1);
+      return uint32_t(primitive)
+           - uint32_t(DxbcPrimitive::Patch1)
+           + 1u;
     } else {
-      return s_vertexCounts.at(
-        static_cast<uint32_t>(primitive));
+      return s_vertexCounts.at(uint32_t(primitive));
     }
   }