From b3ba401503802e869b17513b6258841fb0b10763 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 8 Feb 2018 10:26:46 +0100
Subject: [PATCH] [dxbc] Added support for early fragment tests

---
 src/dxbc/dxbc_compiler.cpp | 5 ++++-
 src/dxbc/dxbc_decoder.cpp  | 2 ++
 src/dxbc/dxbc_decoder.h    | 1 +
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/dxbc/dxbc_compiler.cpp b/src/dxbc/dxbc_compiler.cpp
index e7c4a2d5..6e210951 100644
--- a/src/dxbc/dxbc_compiler.cpp
+++ b/src/dxbc/dxbc_compiler.cpp
@@ -256,7 +256,10 @@ namespace dxvk {
   
   
   void DxbcCompiler::emitDclGlobalFlags(const DxbcShaderInstruction& ins) {
-    // TODO implement properly
+    const DxbcGlobalFlags flags = ins.controls.globalFlags;
+    
+    if (flags.test(DxbcGlobalFlag::EarlyFragmentTests))
+      m_module.setExecutionMode(m_entryPointId, spv::ExecutionModeEarlyFragmentTests);
   }
   
   
diff --git a/src/dxbc/dxbc_decoder.cpp b/src/dxbc/dxbc_decoder.cpp
index 496faa71..a0febb66 100644
--- a/src/dxbc/dxbc_decoder.cpp
+++ b/src/dxbc/dxbc_decoder.cpp
@@ -106,6 +106,8 @@ namespace dxvk {
     m_instruction.modifiers.precise  = !!bit::extract(token, 19, 22);
     
     // Opcode controls. It will depend on the opcode itself which ones are valid.
+    m_instruction.controls.globalFlags =
+      static_cast<DxbcGlobalFlag>(bit::extract(token, 11, 14));
     m_instruction.controls.zeroTest =
       static_cast<DxbcZeroTest>(bit::extract(token, 18, 18));
     m_instruction.controls.syncFlags =
diff --git a/src/dxbc/dxbc_decoder.h b/src/dxbc/dxbc_decoder.h
index 131ff729..14095ec5 100644
--- a/src/dxbc/dxbc_decoder.h
+++ b/src/dxbc/dxbc_decoder.h
@@ -242,6 +242,7 @@ namespace dxvk {
    * only one of the members will be valid.
    */
   struct DxbcShaderOpcodeControls {
+    DxbcGlobalFlags       globalFlags;
     DxbcZeroTest          zeroTest;
     DxbcSyncFlags         syncFlags;
     DxbcResourceDim       resourceDim;