From 33f16ca26eb6c69715eae0e41d8175942b5cac86 Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Thu, 29 Sep 2022 21:04:20 +0100
Subject: [PATCH] Handle unmapped blocks in CachedMappedBufferView

---
 .../main/cpp/skyline/gpu/interconnect/maxwell_3d/common.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/common.cpp b/app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/common.cpp
index e548a564..04943d38 100644
--- a/app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/common.cpp
+++ b/app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/common.cpp
@@ -12,6 +12,12 @@ namespace skyline::gpu::interconnect::maxwell3d {
         if (address < blockMappingStartAddr || address >= blockMappingEndAddr) {
             u64 blockOffset{};
             std::tie(blockMapping, blockOffset) = ctx.channelCtx.asCtx->gmmu.LookupBlock(address);
+            if (!blockMapping.valid()) {
+                view = {};
+                blockMappingEndAddr = 0;
+                return;
+            }
+
             blockMappingStartAddr = address - blockOffset;
             blockMappingEndAddr = blockMappingStartAddr + blockMapping.size();
         }