From 3641e1de453f2ea5c23830e3b6fb21bdac6fc9da Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sun, 2 Dec 2018 22:57:55 -0300
Subject: [PATCH] Add OpKill

---
 include/sirit/sirit.h     | 3 +++
 src/instructions/flow.cpp | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/include/sirit/sirit.h b/include/sirit/sirit.h
index d2b3ad8..f8646b6 100644
--- a/include/sirit/sirit.h
+++ b/include/sirit/sirit.h
@@ -194,6 +194,9 @@ class Module {
     /// Return a value from a function.
     Id OpReturnValue(Id value);
 
+    /// Fragment-shader discard.
+    Id OpKill();
+
     // Debug
 
     /// Assign a name string to a reference.
diff --git a/src/instructions/flow.cpp b/src/instructions/flow.cpp
index 72a0312..8ff856e 100644
--- a/src/instructions/flow.cpp
+++ b/src/instructions/flow.cpp
@@ -59,4 +59,9 @@ Id Module::OpReturnValue(Id value) {
     return AddCode(std::move(op));
 }
 
+Id Module::OpKill() {
+    AddCapability(spv::Capability::Shader);
+    return AddCode(std::make_unique<Op>(spv::Op::OpKill));
+}
+
 } // namespace Sirit