Handle window minimize

Source/Mocha.Framework.Rendering/Generic/RenderStatus.cs

@@ -2,14 +2,15 @@
 
 public enum RenderStatus
 {
-	Ok,
-	NotInitialized,
-	AlreadyInitialized,
-	BeginEndMismatch,
-	NoPipelineBound,
-	NoVertexBufferBound,
-	NoIndexBufferBound,
-	InvalidHandle,
-	ShaderCompileFailed,
-	WindowSizeInvalid
+	NotInitialized = -9,
+	AlreadyInitialized = -8,
+	BeginEndMismatch = -7,
+	NoPipelineBound = -6,
+	NoVertexBufferBound = -5,
+	NoIndexBufferBound = -4,
+	InvalidHandle = -3,
+	ShaderCompileFailed = -2,
+	WindowSizeInvalid = -1,
+	Ok = 0,
+	WindowMinimized = 1,
 }

Source/Mocha.Framework.Rendering/Vulkan/VulkanRenderContext.cs

@@ -104,6 +104,8 @@ private void RecreatePipelines()
 		}
 	}
 
+	private bool IsMinimized => _window.FramebufferSize?.X == 0 || _window.FramebufferSize?.Y == 0;
+
 	private uint SwapchainImageIndex = 0;
 	private VulkanRenderTexture SwapchainTarget = null!;
 
@@ -115,6 +117,11 @@ public RenderStatus BeginRendering()
 			return RenderStatus.BeginEndMismatch;
 		}
 
+		if ( IsMinimized )
+		{
+			return RenderStatus.WindowMinimized;
+		}
+
 		if ( _swapchainIsDirty )
 		{
 			var newSize = _window.FramebufferSize ?? new Vector2Int( 1, 1 );
@@ -193,6 +200,11 @@ public RenderStatus EndRendering()
 			return RenderStatus.BeginEndMismatch;
 		}
 
+		if ( IsMinimized )
+		{
+			return RenderStatus.WindowMinimized;
+		}
+
 		var cmd = _mainContext.CommandBuffer;
 
 		if ( IsRenderPassActive )
@@ -946,13 +958,19 @@ public RenderStatus BindIndexBuffer( IndexBuffer ib )
 
 	public RenderStatus Draw( int vertexCount, int indexCount, int instanceCount )
 	{
+		if ( IsMinimized )
+			return RenderStatus.WindowMinimized;
+
 		Vk.CmdDrawIndexed( _mainContext.CommandBuffer, (uint)indexCount, (uint)instanceCount, 0, 0, 0 );
 
 		return RenderStatus.Ok;
 	}
 
 	public RenderStatus BindRenderTarget( RenderTexture rt )
 	{
+		if ( IsMinimized )
+			return RenderStatus.WindowMinimized;
+
 		if ( IsRenderPassActive )
 		{
 			Vk.CmdEndRendering( _mainContext.CommandBuffer );