Initial Display Helper Work

Sources/Plasma/Apps/plClient/Mac-Cocoa/main.mm

@@ -73,6 +73,7 @@
 #include "pfGLPipeline/plGLPipeline.h"
 #endif
 #include "plInputCore/plInputDevice.h"
+#include "plMacDisplayHelper.h"
 #ifdef PLASMA_PIPELINE_METAL
 #include "pfMetalPipeline/plMetalPipeline.h"
 #endif
@@ -105,6 +106,7 @@ @interface AppDelegate : NSWindowController <NSApplicationDelegate,
    @public
     plClientLoader gClient;
     dispatch_source_t _displaySource;
+    std::shared_ptr<plMacDisplayHelper> _displayHelper;
 }
 
 @property(retain) PLSKeyboardEventMonitor* eventMonitor;
@@ -196,6 +198,9 @@ - (id)init
     window.contentView = view;
     [window setDelegate:self];
 
+    _displayHelper = std::make_shared<plMacDisplayHelper>();
+    _displayHelper->SetCurrentScreen([window screen]);
+
     gClient.SetClientWindow((__bridge void *)view.layer);
     gClient.SetClientDisplay((hsWindowHndl)NULL);
 
@@ -231,6 +236,7 @@ - (void)startRunLoop
                             object:self.window
                              queue:[NSOperationQueue mainQueue]
                         usingBlock:^(NSNotification* _Nonnull note) {
+                            _displayHelper->SetCurrentScreen(self.window.screen);
                             // if we change displays, setup a new draw loop. The new display might
                             // have a different or variable refresh rate.
                             [self setupRunLoop];
@@ -390,6 +396,8 @@ - (void)initializeClient
     while (!gClient.IsInited()) {
         [NSRunLoop.mainRunLoop runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
     }
+
+    gClient->GetPipeline()->SetDisplayHelper(_displayHelper);
 
     if (!gClient || gClient->GetDone()) {
         [NSApp terminate:self];

Sources/Plasma/Apps/plClient/Mac-Cocoa/plMacDisplayHelper.h

@@ -0,0 +1,77 @@
+/*==LICENSE==*
+
+CyanWorlds.com Engine - MMOG client, server and tools
+Copyright (C) 2011  Cyan Worlds, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Additional permissions under GNU GPL version 3 section 7
+
+If you modify this Program, or any covered work, by linking or
+combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
+NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
+JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
+(or a modified version of those libraries),
+containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
+PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
+JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
+licensors of this Program grant you additional
+permission to convey the resulting work. Corresponding Source for a
+non-source form of such a combination shall include the source code for
+the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
+work.
+
+You can contact Cyan Worlds, Inc. by email [email protected]
+ or by snail mail at:
+      Cyan Worlds, Inc.
+      14617 N Newport Hwy
+      Mead, WA   99021
+
+*==LICENSE==*/
+
+#ifndef plMacDisplayHelper_hpp
+#define plMacDisplayHelper_hpp
+
+#include <stdio.h>
+// Currently requires Metal to query attached GPU capabilities
+// Capability check will also work for GL - but will need something
+// different for older GPUs.
+#include <AppKit/AppKit.h>
+#include <Metal/Metal.hpp>
+#include <QuartzCore/QuartzCore.h>
+
+#include "plPipeline.h"
+
+class plMacDisplayHelper: public plDisplayHelper
+{
+public:
+    CGDirectDisplayID CurrentDisplay() { return fCurrentDisplay; }
+    // we need NSScreen to query for non rectangular screen geometry
+    void SetCurrentScreen(NSScreen* screen);
+
+    plDisplayMode DefaultDisplayMode() override { return fDefaultDisplayMode; };
+    void GetSupportedDisplayModes(std::vector<plDisplayMode> *res, int ColorDepth = 32) override;
+
+    MTL::Device* RenderDevice() { return fRenderDevice; }
+
+    plMacDisplayHelper();
+    ~plMacDisplayHelper();
+private:
+    CGDirectDisplayID fCurrentDisplay;
+    MTL::Device* fRenderDevice = nullptr;
+    plDisplayMode fDefaultDisplayMode;
+    std::vector<plDisplayMode> fDisplayModes;
+};
+
+#endif /* plMacDisplayHelper_hpp */

Sources/Plasma/Apps/plClient/Mac-Cocoa/plMacDisplayHelper.mm

@@ -0,0 +1,149 @@
+/*==LICENSE==*
+
+CyanWorlds.com Engine - MMOG client, server and tools
+Copyright (C) 2011  Cyan Worlds, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Additional permissions under GNU GPL version 3 section 7
+
+If you modify this Program, or any covered work, by linking or
+combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
+NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
+JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
+(or a modified version of those libraries),
+containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
+PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
+JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
+licensors of this Program grant you additional
+permission to convey the resulting work. Corresponding Source for a
+non-source form of such a combination shall include the source code for
+the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
+work.
+
+You can contact Cyan Worlds, Inc. by email [email protected]
+ or by snail mail at:
+      Cyan Worlds, Inc.
+      14617 N Newport Hwy
+      Mead, WA   99021
+
+*==LICENSE==*/
+
+#include "plMacDisplayHelper.h"
+
+// CGDirectDisplayCopyCurrentMetalDevice only declared in Metal.h?
+#include <Metal/Metal.h>
+
+void plMacDisplayHelper::SetCurrentScreen(NSScreen* screen)
+{
+    fCurrentDisplay = [screen.deviceDescription[@"NSScreenNumber"] intValue];
+
+    // Calculate the region actually available for full screen
+    NSRect currentResolution = [screen frame];
+    if (@available(macOS 12.0, *)) {
+        NSEdgeInsets currentSafeAreaInsets = [screen safeAreaInsets];
+        // Sigh... Origin doesn't matter but lets do it for inspectability
+        currentResolution.origin.x += currentSafeAreaInsets.left;
+        currentResolution.origin.y += currentSafeAreaInsets.top;
+        currentResolution.size.width -= currentSafeAreaInsets.left + currentSafeAreaInsets.right;
+        currentResolution.size.height -= currentSafeAreaInsets.top + currentSafeAreaInsets.bottom;
+    }
+
+    float safeAspectRatio = currentResolution.size.width / currentResolution.size.height;
+
+    fDisplayModes.clear();
+
+    CFArrayRef displayModes = CGDisplayCopyAllDisplayModes(fCurrentDisplay, nullptr);
+    for(int i=0; i< CFArrayGetCount(displayModes); i++)
+    {
+        // Now filter out the ones that are taller than the safe area aspect ratio
+        // This could break in interesting ways if Apple ships displays that have unsafe
+        // areas along the side - but will prevent us stripping any aspect ratios that don't
+        // match the display entirely.
+        // Asked for better guidance here from Apple - FB13375033
+        CGDisplayModeRef mode = (CGDisplayModeRef)CFArrayGetValueAtIndex(displayModes, i);
+
+        float modeAspectRatio = float(CGDisplayModeGetWidth(mode)) / float(CGDisplayModeGetHeight(mode));
+        if(modeAspectRatio < safeAspectRatio)
+        {
+            continue;
+        }
+
+        // aspect ratio is good - add the mode to the list
+        plDisplayMode plasmaMode;
+        plasmaMode.ColorDepth = 32;
+        plasmaMode.Width = int(CGDisplayModeGetWidth(mode));
+        plasmaMode.Height = int(CGDisplayModeGetHeight(mode));
+
+        fDisplayModes.push_back(plasmaMode);
+    }
+    CFRelease(displayModes);
+
+    // we're going to look for a good default mode, but
+    // in case we somehow don't match at least pick one.
+
+    fDefaultDisplayMode = fDisplayModes.front();
+
+    fRenderDevice->release();
+    fRenderDevice = (__bridge MTL::Device *)(CGDirectDisplayCopyCurrentMetalDevice(fCurrentDisplay));
+
+    // now inspect the GPU and figure out a good default resolution
+    // This code is in Metal (for now) - but it should also work
+    // under OpenGL/Mac as long as the GPU also supports Metal.
+    if(fRenderDevice->supportsFamily(MTL::GPUFamilyMetal3))
+    {
+        // if it's a Metal 3 GPU - it should be good
+        // Pick the native display resolution
+        // (Re-picking the first one here for clarity)
+        fDefaultDisplayMode = fDisplayModes.front();
+    }
+    else
+    {
+        // time to go down the rabit hole
+        int maxWidth = INT_MAX;
+        if(fRenderDevice->lowPower())
+        {
+            // integrated - not Apple Silicon, we know it's not very good
+            maxWidth = 1080;
+        }
+        else if(fRenderDevice->recommendedMaxWorkingSetSize() < 4000000000)
+        {
+            // if it has less than around 4 gigs of VRAM it might still be performance
+            // limited
+            maxWidth = 1400;
+        }
+
+        for (auto & mode : fDisplayModes) {
+            if(mode.Width <= maxWidth) {
+                fDefaultDisplayMode = mode;
+                abort();
+            }
+        }
+    }
+}
+
+void plMacDisplayHelper::GetSupportedDisplayModes(std::vector<plDisplayMode> *res, int ColorDepth)
+{
+    *res = fDisplayModes;
+}
+
+plMacDisplayHelper::plMacDisplayHelper()
+{
+
+};
+
+plMacDisplayHelper::~plMacDisplayHelper()
+{
+    fRenderDevice->release();
+}

Sources/Plasma/FeatureLib/pfMetalPipeline/plMetalPipeline.cpp

@@ -970,35 +970,7 @@ plMipmap* plMetalPipeline::ExtractMipMap(plRenderTarget* targ)
 
 void plMetalPipeline::GetSupportedDisplayModes(std::vector<plDisplayMode>* res, int ColorDepth)
 {
-    /*
-     There are decisions to make here.
-
-     Modern macOS does not support "display modes." You panel runs at native resolution at all times, 
-     and you can over-render or under-render. But you never set the display mode of the panel, or get
-     the display mode of the panel. Most games have a "scale slider."
-
-     Note: There are legacy APIs for display modes for compatibility with older software. In since 
-     we're here writing a new renderer, lets do things the right way. The display mode APIs also have
-     trouble with density. I.E. a 4k display might be reported as a 2k display if the window manager is
-     running in a higher DPI mode.
-
-     The basic approach should be to render at whatever the resolution of our output surface is. We're 
-     mostly doing that now (aspect ratio doesn't adjust.)
-
-     Ideally we should support some sort of scaling/semi dynamic renderbuffer resolution thing. But don't 
-     mess with the window servers framebuffer size. macOS has accelerated resolution scaling like consoles
-     do. Use that.
-     */
-
-    std::vector<plDisplayMode> supported;
-    CA::MetalLayer* layer = fDevice.GetOutputLayer();
-    CGSize drawableSize = layer->drawableSize();
-    supported.emplace_back();
-    supported[0].Width = drawableSize.width;
-    supported[0].Height = drawableSize.height;
-    supported[0].ColorDepth = 32;
-
-    *res = supported;
+    fDisplayHelper->GetSupportedDisplayModes(res);
 }
 
 int plMetalPipeline::GetMaxAnisotropicSamples()

Sources/Plasma/NucleusLib/inc/plPipeline.h

@@ -138,6 +138,16 @@ class plDisplayMode
     int ColorDepth;
 };
 
+class plDisplayHelper
+{
+public:
+    virtual plDisplayMode DefaultDisplayMode() = 0;
+    virtual void GetSupportedDisplayModes(std::vector<plDisplayMode> *res, int ColorDepth = 32) = 0;
+
+    plDisplayHelper() = default;
+    virtual ~plDisplayHelper() = default;
+};
+
 class plPipeline : public plCreatable
 {
 public:
@@ -357,6 +367,9 @@ class plPipeline : public plCreatable
 
     float fBackingScale = 1.0f;
     void SetBackingScale(float scale) { fBackingScale = scale; };
+
+    std::shared_ptr<plDisplayHelper> fDisplayHelper;
+    void SetDisplayHelper(std::shared_ptr<plDisplayHelper> helper) { fDisplayHelper = helper; };
 };
 
 #endif // plPipeline_inc