From 3b1187398f3410b0ec82d3fbd8ce564ace4d02f7 Mon Sep 17 00:00:00 2001
From: Rhys Mainwaring <rhys.mainwaring@me.com>
Date: Sun, 17 Oct 2021 16:19:54 +0100
Subject: [PATCH] [Metal] implement override for
 MetalTextureGpu::getCustomAttribute

- Implement method getCustomAttribute for MetalTextureGpu
- The caller takes ownership of the object via CFBridgingRetain.

Signed-off-by: Rhys Mainwaring <rhys.mainwaring@me.com>
---
 RenderSystems/Metal/include/OgreMetalTextureGpu.h |  2 ++
 RenderSystems/Metal/src/OgreMetalTextureGpu.mm    | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/RenderSystems/Metal/include/OgreMetalTextureGpu.h b/RenderSystems/Metal/include/OgreMetalTextureGpu.h
index 86381fa355a..ffc43f25f93 100644
--- a/RenderSystems/Metal/include/OgreMetalTextureGpu.h
+++ b/RenderSystems/Metal/include/OgreMetalTextureGpu.h
@@ -106,6 +106,8 @@ namespace Ogre
         id<MTLTexture> getDisplayTextureName(void) const    { return mDisplayTextureName; }
         id<MTLTexture> getFinalTextureName(void) const      { return mFinalTextureName; }
         id<MTLTexture> getMsaaFramebufferName(void) const   { return mMsaaFramebufferName; }
+
+        virtual void getCustomAttribute( IdString name, void *pData ) override;
     };
 
     class _OgreMetalExport MetalTextureGpuRenderTarget : public MetalTextureGpu
diff --git a/RenderSystems/Metal/src/OgreMetalTextureGpu.mm b/RenderSystems/Metal/src/OgreMetalTextureGpu.mm
index f587faac229..7eb57a5e589 100644
--- a/RenderSystems/Metal/src/OgreMetalTextureGpu.mm
+++ b/RenderSystems/Metal/src/OgreMetalTextureGpu.mm
@@ -398,6 +398,20 @@ of this software and associated documentation files (the "Software"), to deal
             //TODO
         }
     }
+
+    //-----------------------------------------------------------------------------------
+    void MetalTextureGpu::getCustomAttribute( IdString name, void *pData )
+    {
+        if( name == msFinalTextureBuffer )
+        {
+            *static_cast<void**>(pData) = (void*)CFBridgingRetain(mFinalTextureName);
+        }
+        else if( name == msMsaaTextureBuffer )
+        {
+            *static_cast<void**>(pData) = (void*)CFBridgingRetain(mMsaaFramebufferName);
+        }
+    }
+
     //-----------------------------------------------------------------------------------
     //-----------------------------------------------------------------------------------
     //-----------------------------------------------------------------------------------