From 47794b661e38703e25562d588091089b74548749 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Sat, 30 Jul 2022 16:00:28 +0200
Subject: [PATCH] [dxvk] Only pass requried spec constants when compiling
 compute pipelines

---
 src/dxvk/dxvk_compute.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/dxvk/dxvk_compute.cpp b/src/dxvk/dxvk_compute.cpp
index bbf8a27f2..02249771e 100644
--- a/src/dxvk/dxvk_compute.cpp
+++ b/src/dxvk/dxvk_compute.cpp
@@ -106,10 +106,16 @@ namespace dxvk {
       Logger::debug(str::format("  cs  : ", m_shaders.cs->debugName()));
     }
     
+    uint32_t specConstantMask = m_shaders.cs->getSpecConstantMask();
     DxvkSpecConstants specData;
-    
-    for (uint32_t i = 0; i < MaxNumSpecConstants; i++)
-      specData.set(i, state.sc.specConstants[i], 0u);
+
+    for (uint32_t i = 0; i < MaxNumSpecConstants; i++) {
+      if (specConstantMask & (1u << i))
+        specData.set(i, state.sc.specConstants[i], 0u);
+    }
+
+    if (specConstantMask & (1u << MaxNumSpecConstants))
+      specData.set(MaxNumSpecConstants, 1u, 0u);
 
     VkSpecializationInfo specInfo = specData.getSpecInfo();