From 1209d428f14ffc6f1c8b6049b0431c30b26138d6 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Thu, 22 Dec 2022 17:01:39 -0500
Subject: texture_cache: Use pre-allocated buffer for texture downloads

---
 src/video_core/texture_cache/util.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

(limited to 'src/video_core/texture_cache/util.cpp')

diff --git a/src/video_core/texture_cache/util.cpp b/src/video_core/texture_cache/util.cpp
index 4488fa9da..7999a7f06 100644
--- a/src/video_core/texture_cache/util.cpp
+++ b/src/video_core/texture_cache/util.cpp
@@ -505,7 +505,7 @@ void SwizzlePitchLinearImage(Tegra::MemoryManager& gpu_memory, GPUVAddr gpu_addr
 
 void SwizzleBlockLinearImage(Tegra::MemoryManager& gpu_memory, GPUVAddr gpu_addr,
                              const ImageInfo& info, const BufferImageCopy& copy,
-                             std::span<const u8> input) {
+                             std::span<const u8> input, std::vector<u8>& tmp_buffer) {
     const Extent3D size = info.size;
     const LevelInfo level_info = MakeLevelInfo(info);
     const Extent2D tile_size = DefaultBlockSize(info.format);
@@ -534,8 +534,8 @@ void SwizzleBlockLinearImage(Tegra::MemoryManager& gpu_memory, GPUVAddr gpu_addr
                        tile_size.height, info.tile_width_spacing);
     const size_t subresource_size = sizes[level];
 
-    const auto dst_data = std::make_unique<u8[]>(subresource_size);
-    const std::span<u8> dst(dst_data.get(), subresource_size);
+    tmp_buffer.resize(subresource_size);
+    const std::span<u8> dst(tmp_buffer);
 
     for (s32 layer = 0; layer < info.resources.layers; ++layer) {
         const std::span<const u8> src = input.subspan(host_offset);
@@ -977,13 +977,14 @@ std::vector<SwizzleParameters> FullUploadSwizzles(const ImageInfo& info) {
 }
 
 void SwizzleImage(Tegra::MemoryManager& gpu_memory, GPUVAddr gpu_addr, const ImageInfo& info,
-                  std::span<const BufferImageCopy> copies, std::span<const u8> memory) {
+                  std::span<const BufferImageCopy> copies, std::span<const u8> memory,
+                  std::vector<u8>& tmp_buffer) {
     const bool is_pitch_linear = info.type == ImageType::Linear;
     for (const BufferImageCopy& copy : copies) {
         if (is_pitch_linear) {
             SwizzlePitchLinearImage(gpu_memory, gpu_addr, info, copy, memory);
         } else {
-            SwizzleBlockLinearImage(gpu_memory, gpu_addr, info, copy, memory);
+            SwizzleBlockLinearImage(gpu_memory, gpu_addr, info, copy, memory, tmp_buffer);
         }
     }
 }
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