From 6a8eb26bbafa32ef6561792c52ec72f80007377a Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Fri, 12 Jun 2020 18:00:45 +0200
Subject: rhi: Add a feature flag for readback format support

Indicate that doing a QRhiResourceUpdateBatch::readBackTexture() for
texture formats other than RGBA/BGRA is not necessarily supported at
run time.

Change-Id: Ie9ca9546a3af9bff142b875f1ecf26bf26bcc442
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
---
 src/gui/rhi/qrhimetal.mm | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/gui/rhi/qrhimetal.mm')

diff --git a/src/gui/rhi/qrhimetal.mm b/src/gui/rhi/qrhimetal.mm
index 0c42eaa3e9..46a121c812 100644
--- a/src/gui/rhi/qrhimetal.mm
+++ b/src/gui/rhi/qrhimetal.mm
@@ -570,6 +570,8 @@ bool QRhiMetal::isFeatureSupported(QRhi::Feature feature) const
         return true;
     case QRhi::ScreenSpaceDerivatives:
         return true;
+    case QRhi::ReadBackAnyTextureFormat:
+        return true;
     default:
         Q_UNREACHABLE();
         return false;
-- 
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