From 02de3f2e2a1ac8914b5b314c2b503e98ed081114 Mon Sep 17 00:00:00 2001
From: Ben Doherty <bendoherty@google.com>
Date: Mon, 29 Mar 2021 14:20:40 -0700
Subject: [PATCH] Fix, regression with Metal buffers (#3715)

---
 filament/backend/src/metal/MetalHandles.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/filament/backend/src/metal/MetalHandles.mm b/filament/backend/src/metal/MetalHandles.mm
index 6b471a24a4..5a2c67961f 100644
--- a/filament/backend/src/metal/MetalHandles.mm
+++ b/filament/backend/src/metal/MetalHandles.mm
@@ -320,7 +320,7 @@ void MetalRenderPrimitive::setBuffers(MetalVertexBuffer* vertexBuffer, MetalInde
     uint32_t bufferIndex = 0;
     for (uint32_t attributeIndex = 0; attributeIndex < attributeCount; attributeIndex++) {
         const auto& attribute = vertexBuffer->attributes[attributeIndex];
-        if (attribute.buffer != Attribute::BUFFER_UNUSED) {
+        if (attribute.buffer == Attribute::BUFFER_UNUSED) {
             const uint8_t flags = attribute.flags;
             const MTLVertexFormat format = (flags & Attribute::FLAG_INTEGER_TARGET) ?
                     MTLVertexFormatUInt4 : MTLVertexFormatFloat4;