From c9a782f8d65cc8009ede36153bda33274d42167d Mon Sep 17 00:00:00 2001
From: Gordon-F <ishaposhnik@icloud.com>
Date: Wed, 23 Jun 2021 20:09:48 +0300
Subject: [PATCH] [hlsl-out] Fix panic with shader with multiple entry points
 without argument

---
 src/back/hlsl/writer.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/back/hlsl/writer.rs b/src/back/hlsl/writer.rs
index f924435ec0..c452542e42 100644
--- a/src/back/hlsl/writer.rs
+++ b/src/back/hlsl/writer.rs
@@ -542,7 +542,15 @@ impl<'a, W: Write> Writer<'a, W> {
             }
             back::FunctionType::EntryPoint(index) => {
                 // EntryPoint arguments wrapped into structure
-                if !self.ep_inputs.is_empty() {
+                // We need to ensure that entry points have arguments too.
+                // For the case when we working with multiple entry points
+                // for example vertex shader with arguments and fragment shader without arguments.
+                if !self.ep_inputs.is_empty()
+                    && !module.entry_points[index as usize]
+                        .function
+                        .arguments
+                        .is_empty()
+                {
                     if let Some(ref ep_input) = self.ep_inputs[index as usize] {
                         write!(
                             self.out,