From bb3b571c90dc5ba98b7250560f6c90d1170d2803 Mon Sep 17 00:00:00 2001
From: Aras Pranckevicius <aras@nesnausk.org>
Date: Thu, 31 Oct 2024 18:29:55 +0200
Subject: [PATCH] EXR: multi-threaded exr image loading

EXR files internally are split into independent "parts", which can
be decoded separately. Tinyexr already supports that via
TINYEXR_USE_THREAD.

Time taken to load 4K video resolution EXR files, on Ryzen 5950X/VS2022:
- FP16 file (27MB): 536ms -> 77ms
- FP32 file (69MB): 793ms -> 118ms
---
 renderdoc/3rdparty/tinyexr/tinyexr.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/renderdoc/3rdparty/tinyexr/tinyexr.cpp b/renderdoc/3rdparty/tinyexr/tinyexr.cpp
index dff424900..4791ce9de 100644
--- a/renderdoc/3rdparty/tinyexr/tinyexr.cpp
+++ b/renderdoc/3rdparty/tinyexr/tinyexr.cpp
@@ -26,5 +26,7 @@
 // compatible functions to be available, which miniz does.
 #define TINYEXR_USE_MINIZ 0
 
+#define TINYEXR_USE_THREAD 1
+
 #define TINYEXR_IMPLEMENTATION
 #include "tinyexr.h"