From 2e073288785ce231bfb9b880bddc116b319c0d38 Mon Sep 17 00:00:00 2001
From: Stenzek <stenzek@gmail.com>
Date: Mon, 8 Jan 2024 22:39:01 +1000
Subject: [PATCH] GS: Skip vertex append for GS_INVALID PRIM

---
 pcsx2/GS/GSState.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/pcsx2/GS/GSState.cpp b/pcsx2/GS/GSState.cpp
index fe1356d8c2..8d7149fae3 100644
--- a/pcsx2/GS/GSState.cpp
+++ b/pcsx2/GS/GSState.cpp
@@ -3337,6 +3337,12 @@ __forceinline void GSState::VertexKick(u32 skip)
 
 	pxAssert(m_vertex.tail < m_vertex.maxcount + 3);
 
+	if constexpr (prim == GS_INVALID)
+	{
+		m_vertex.tail = m_vertex.head;
+		return;
+	}
+
 	if (auto_flush && skip == 0 && m_index.tail > 0 && ((m_vertex.tail + 1) - m_vertex.head) >= n)
 	{
 		HandleAutoFlush<prim, index_swap>();
@@ -3454,7 +3460,6 @@ __forceinline void GSState::VertexKick(u32 skip)
 			case GS_LINELIST:
 			case GS_TRIANGLELIST:
 			case GS_SPRITE:
-			case GS_INVALID:
 				m_vertex.tail = head; // no need to check or grow the buffer length
 				break;
 			case GS_LINESTRIP:
@@ -3561,9 +3566,6 @@ __forceinline void GSState::VertexKick(u32 skip)
 			m_vertex.next = head + 2;
 			m_index.tail += 2;
 			break;
-		case GS_INVALID:
-			m_vertex.tail = head;
-			return;
 		default:
 			ASSUME(0);
 	}