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-rw-r--r--src/video_core/textures/workers.cpp14
1 files changed, 12 insertions, 2 deletions
diff --git a/src/video_core/textures/workers.cpp b/src/video_core/textures/workers.cpp
index a1953c4bf4..e3a0f26cf2 100644
--- a/src/video_core/textures/workers.cpp
+++ b/src/video_core/textures/workers.cpp
@@ -4,13 +4,23 @@
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
+#include <cstdlib>
+
#include "video_core/textures/workers.h"
namespace Tegra::Texture {
Common::ThreadWorker& GetThreadWorkers() {
- static Common::ThreadWorker workers{(std::max)(std::thread::hardware_concurrency(), 2U) / 2,
- "ImageTranscode"};
+ // A quarter of the hardware threads (at least 2). Half took ~3.5 cores from the emulated
+ // CPU cores and the GPU thread on an 8-core laptop when textures were thrashing; with an
+ // eighth (2) both threads stayed saturated and streamed textures arrived seconds late (shown
+ // as placeholders), while 4 cost no frame rate. EDEN_NX2_TRANSCODE_THREADS=<n> overrides.
+ static Common::ThreadWorker workers{[] {
+ if (const char* text = std::getenv("EDEN_NX2_TRANSCODE_THREADS")) {
+ return (std::max)(static_cast<u32>(std::strtoul(text, nullptr, 10)), 1U);
+ }
+ return (std::max)(std::thread::hardware_concurrency() / 4, 2U);
+ }(), "ImageTranscode"};
return workers;
}