From e457001dced3b86c89e842270c6ed0513e81027f Mon Sep 17 00:00:00 2001 From: Lioncash Date: Tue, 22 Sep 2020 17:31:53 -0400 Subject: General: Make use of std::nullopt where applicable Allows some implementations to avoid completely zeroing out the internal buffer of the optional, and instead only set the validity byte within the structure. This also makes it consistent how we return empty optionals. --- src/video_core/texture_cache/surface_base.cpp | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'src/video_core/texture_cache') diff --git a/src/video_core/texture_cache/surface_base.cpp b/src/video_core/texture_cache/surface_base.cpp index dfcf36e0bd..b44c09d710 100644 --- a/src/video_core/texture_cache/surface_base.cpp +++ b/src/video_core/texture_cache/surface_base.cpp @@ -115,20 +115,24 @@ std::optional> SurfaceBaseImpl::GetLayerMipmap( if (gpu_addr == candidate_gpu_addr) { return {{0, 0}}; } + if (candidate_gpu_addr < gpu_addr) { - return {}; + return std::nullopt; } + const auto relative_address{static_cast(candidate_gpu_addr - gpu_addr)}; const auto layer{static_cast(relative_address / layer_size)}; if (layer >= params.depth) { - return {}; + return std::nullopt; } + const GPUVAddr mipmap_address = relative_address - layer_size * layer; const auto mipmap_it = Common::BinaryFind(mipmap_offsets.begin(), mipmap_offsets.end(), mipmap_address); if (mipmap_it == mipmap_offsets.end()) { - return {}; + return std::nullopt; } + const auto level{static_cast(std::distance(mipmap_offsets.begin(), mipmap_it))}; return std::make_pair(layer, level); } -- cgit v1.2.3