From 49e7df96ec54be4afc1a78a511cebf71f6c0f334 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 28 Nov 2019 00:27:11 +0100
Subject: [PATCH] [dxbc] Emit a spec constant for uniform buffers

This partially reverts commit fd547b666e5324f29eff47f2838832f273bb0fed.

For some reason, not doing so breaks Overwatch (because of course it does).
---
 src/dxbc/dxbc_compiler.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/dxbc/dxbc_compiler.cpp b/src/dxbc/dxbc_compiler.cpp
index 9a65e9e0d..68de83209 100644
--- a/src/dxbc/dxbc_compiler.cpp
+++ b/src/dxbc/dxbc_compiler.cpp
@@ -806,6 +806,13 @@ namespace dxvk {
     if (asSsbo)
       m_module.decorate(varId, spv::DecorationNonWritable);
 
+    // Declare a specialization constant which will
+    // store whether or not the resource is bound.
+    const uint32_t specConstId = m_module.specConstBool(true);
+    m_module.decorateSpecId(specConstId, bindingId);
+    m_module.setDebugName(specConstId,
+      str::format(name, "_bound").c_str());
+    
     DxbcConstantBuffer buf;
     buf.varId  = varId;
     buf.size   = numConstants;