1 files changed, 7 insertions, 0 deletions

diff --git a/src/video_core/surface.cpp b/src/video_core/surface.cpp
index 6308aef94..eb1746265 100644
--- a/src/video_core/surface.cpp
+++ b/src/video_core/surface.cpp
@@ -283,4 +283,11 @@ std::pair<u32, u32> GetASTCBlockSize(PixelFormat format) {
     return {DefaultBlockWidth(format), DefaultBlockHeight(format)};
 }
 
+u64 EstimatedDecompressedSize(u64 base_size, PixelFormat format) {
+    constexpr u64 RGBA8_PIXEL_SIZE = 4;
+    const u64 base_block_size = static_cast<u64>(DefaultBlockWidth(format)) *
+                                static_cast<u64>(DefaultBlockHeight(format)) * RGBA8_PIXEL_SIZE;
+    return (base_size * base_block_size) / BytesPerBlock(format);
+}
+
 } // namespace VideoCore::Surface