WIP metal tests

Author: bghgary

Apps/UnitTests/Source/App_Apple.cpp

@@ -0,0 +1,18 @@
+#include "App.h"
+#include <Babylon/DebugTrace.h>
+#include <Metal/Metal.h>
+
+int main()
+{
+    Babylon::DebugTrace::EnableDebugTrace(true);
+    Babylon::DebugTrace::SetTraceOutput([](const char* trace) { NSLog(@"%s", trace); });
+
+    id<MTLDevice> device = MTLCreateSystemDefaultDevice();
+
+    Babylon::Graphics::Configuration config{};
+    config.Device = device;
+    config.Width = 600;
+    config.Height = 400;
+
+    return RunTests(config);
+}

Apps/UnitTests/Source/App_macOS.mm

@@ -1,5 +1,5 @@
 #include <gtest/gtest.h>
-#include <Babylon/Graphics/Device.h>
+#include "Utils.h"
 
 Babylon::Graphics::TextureT CreateTestTexture(Babylon::Graphics::DeviceT device, uint32_t width, uint32_t height)
 {

Apps/UnitTests/Source/Utils_D3D11.cpp

@@ -0,0 +1,23 @@
+#include <gtest/gtest.h>
+#include "Utils.h"
+#import <Metal/Metal.h>
+
+Babylon::Graphics::TextureT CreateTestTexture(Babylon::Graphics::DeviceT device, uint32_t width, uint32_t height)
+{
+    MTLTextureDescriptor* descriptor = [MTLTextureDescriptor
+        texture2DDescriptorWithPixelFormat:MTLPixelFormatRGBA8Unorm
+            width:width
+            height:height
+            mipmapped:NO];
+
+    id<MTLTexture> texture = [device newTextureWithDescriptor:descriptor];
+    EXPECT_NE(texture, nil);
+
+    return texture;
+}
+
+void DestroyTestTexture(Babylon::Graphics::TextureT texture)
+{
+    // ARC will handle the release automatically
+    (void)texture;
+}

Apps/UnitTests/Source/Utils_Metal.mm

@@ -0,0 +1,12 @@
+#include <gtest/gtest.h>
+#include "Utils.h"
+
+Babylon::Graphics::TextureT CreateTestTexture(Babylon::Graphics::DeviceT device, uint32_t width, uint32_t height)
+{
+    throw std::runtime_error{"not implemented"};
+}
+
+void DestroyTestTexture(Babylon::Graphics::TextureT texture)
+{
+    throw std::runtime_error{"not implemented"};
+}

Apps/UnitTests/Source/Utils_OpenGL.cpp

@@ -16,7 +16,7 @@ namespace Babylon::Graphics
 
     struct PlatformInfo
     {
-        struct MTLDevice* Device;
-        struct MTLCommandQueue* CommandQueue;
+        id<MTLDevice> Device;
+        id<MTLCommandQueue> CommandQueue;
     };
 }

Core/Graphics/Include/RendererType/Metal/Babylon/Graphics/RendererType.h

@@ -7,10 +7,9 @@ namespace Babylon::Graphics
 
     PlatformInfo DeviceImpl::GetPlatformInfo() const
     {
-        return
-        {
-            static_cast<struct MTLDevice*>(bgfx::getInternalData()->context),
-            static_cast<struct MTLCommandQueue*>(bgfx::getInternalData()->commandQueue)
-        };
+        auto internalData = bgfx::getInternalData();
+        id<MTLDevice> device = (id<MTLDevice>)internalData->context;
+        id<MTLCommandQueue> commandQueue = (id<MTLCommandQueue>)internalData->commandQueue;
+        return {std::move(device), std::move(commandQueue)};
     }
 }