From 219e7d0c20ea162f74e123bba5a856809a9d6ac8 Mon Sep 17 00:00:00 2001
From: Shotaro Uchida <fantom@xmaker.mx>
Date: Tue, 25 Feb 2020 22:57:25 -0800
Subject: [PATCH] Fix shader warning for macOS Catalina (#30)

In Catalina, shader creation will fail because of the following issue:

```
Compilation succeeded with:

program_source:22:21: warning: writable resources in non-void vertex function
vertex VertexOutput vertFunc2(unsigned int vID[[vertex_id]], device Vertex *pos [[buffer(0)]])
                    ^
program_source:22:77: note: writable buffer defined here
vertex VertexOutput vertFunc2(unsigned int vID[[vertex_id]], device Vertex *pos [[buffer(0)]])
                                                                            ^
```

Adding const to ensure the buffer is read-only.
---
 src/macosx/MacMiniFB.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/macosx/MacMiniFB.m b/src/macosx/MacMiniFB.m
index 3f3c334..933f095 100644
--- a/src/macosx/MacMiniFB.m
+++ b/src/macosx/MacMiniFB.m
@@ -55,7 +55,7 @@ NSString* g_shadersSrc = @
         "float4 position [[position]];\n"
     "};\n"
 
-    "vertex VertexOutput vertFunc2(unsigned int vID[[vertex_id]], device Vertex *pos [[buffer(0)]])\n"
+    "vertex VertexOutput vertFunc2(unsigned int vID[[vertex_id]], const device Vertex *pos [[buffer(0)]])\n"
     "{\n"
         "VertexOutput out;\n"