video_core: defensively program around unmapped device pointers

1 files changed, 5 insertions, 3 deletions

diff --git a/src/video_core/renderer_vulkan/present/layer.cpp b/src/video_core/renderer_vulkan/present/layer.cpp
index cfc04be44..550955d4d 100644
--- a/src/video_core/renderer_vulkan/present/layer.cpp
+++ b/src/video_core/renderer_vulkan/present/layer.cpp
@@ -270,9 +270,11 @@ void Layer::UpdateRawImage(const Tegra::FramebufferConfig& framebuffer, size_t i
     const u64 linear_size{GetSizeInBytes(framebuffer)};
     const u64 tiled_size{Tegra::Texture::CalculateSize(
         true, bytes_per_pixel, framebuffer.stride, framebuffer.height, 1, block_height_log2, 0)};
-    Tegra::Texture::UnswizzleTexture(
-        mapped_span.subspan(image_offset, linear_size), std::span(host_ptr, tiled_size),
-        bytes_per_pixel, framebuffer.width, framebuffer.height, 1, block_height_log2, 0);
+    if (host_ptr) {
+        Tegra::Texture::UnswizzleTexture(
+            mapped_span.subspan(image_offset, linear_size), std::span(host_ptr, tiled_size),
+            bytes_per_pixel, framebuffer.width, framebuffer.height, 1, block_height_log2, 0);
+    }
 
     const VkBufferImageCopy copy{
         .bufferOffset = image_offset,