Check for GPU availability on startup, no CPU fallback for now since NCNN VS doesn't support it

CodeLegacy/Forms/Main/Form1.cs

@@ -181,6 +181,7 @@ namespace Flowframes.Forms.Main
             try
             {
                 // Task.Run(() => Updater.UpdateModelList());
+                StartupChecks.GpuCheck();
                 Task.Run(() => Updater.AsyncUpdateCheck());
                 Task.Run(() => GetWebInfo.LoadNews(newsLabel));
                 Task.Run(() => GetWebInfo.LoadPatronListCsv(patronsLabel));

CodeLegacy/Forms/MessageForm.Designer.cs

@@ -37,11 +37,12 @@
             // textLabel
             // 
             this.textLabel.AutoSize = true;
+            this.textLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.textLabel.ForeColor = System.Drawing.Color.White;
             this.textLabel.Location = new System.Drawing.Point(15, 15);
             this.textLabel.Margin = new System.Windows.Forms.Padding(8, 0, 3, 0);
             this.textLabel.Name = "textLabel";
-            this.textLabel.Size = new System.Drawing.Size(0, 13);
+            this.textLabel.Size = new System.Drawing.Size(0, 16);
             this.textLabel.TabIndex = 8;
             // 
             // btn1

CodeLegacy/Os/StartupChecks.cs

@@ -3,6 +3,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using Flowframes.Forms.Main;
 using Flowframes.IO;
 using Flowframes.Ui;
 
@@ -121,5 +122,26 @@ namespace Flowframes.Os
                 IoUtils.TryDeleteIfExists(devmodeBatchPath);
             }
         }
+
+        public static void GpuCheck(bool exit = true)
+        {
+            bool anyGpu = OsUtils.HasGpu();
+
+            if (!anyGpu)
+            {
+                if (exit)
+                {
+                    Form1.CloseAllSplashForms();
+                }
+
+                UiUtils.ShowMessageBox("No GPU detected!\n\nFlowframes requires a GPU (graphics card or integrated) with Vulkan support to run AI interpolation models.\n\nRecommended:" +
+                    "\n- Nvidia GeForce GTX 1000 series or newer\n- AMD Radeon RX 5000 series or newer", UiUtils.MessageType.Error);
+
+                if (exit)
+                {
+                    Application.Exit();
+                }
+            }
+        }
     }
 }

CodeLegacy/Ui/UiUtils.cs

@@ -100,7 +100,7 @@ namespace Flowframes.Ui
             if (type == MessageType.Warning) icon = MessageBoxIcon.Warning;
             else if (type == MessageType.Error) icon = MessageBoxIcon.Error;
 
-            MessageForm form = new MessageForm(text, type.ToString());
+            MessageForm form = new MessageForm(text, type.ToString()) { TopMost = true };
             form.ShowDialog();
             return DialogResult.OK;
         }