From 92a3eaa4266c9cac4bcd4d44da17e5bc1dc01c6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Thu, 25 Mar 2021 16:31:03 +0100
Subject: [PATCH] Added protected function to create Texture2D from raw data

---
 .../src/Platform/DX11/Renderer/Dx11Texture.bf | 48 ++++++++++++++++++-
 GlitchyEngine/src/Renderer/Texture.bf         | 13 +++++
 2 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/GlitchyEngine/src/Platform/DX11/Renderer/Dx11Texture.bf b/GlitchyEngine/src/Platform/DX11/Renderer/Dx11Texture.bf
index 86dbfc6..f23f355 100644
--- a/GlitchyEngine/src/Platform/DX11/Renderer/Dx11Texture.bf
+++ b/GlitchyEngine/src/Platform/DX11/Renderer/Dx11Texture.bf
@@ -5,6 +5,8 @@ using DirectXTK;
 
 using internal GlitchyEngine.Renderer;
 
+typealias NativeTex2DDesc = DirectX.D3D11.Texture2DDescription;
+
 namespace GlitchyEngine.Renderer
 {
 	extension Texture
@@ -18,10 +20,35 @@ namespace GlitchyEngine.Renderer
 		}
 	}
 
+	extension Texture2DDesc
+	{
+		public NativeTex2DDesc ToNative()
+		{
+			NativeTex2DDesc desc;
+
+			desc.Width = Width;
+			desc.Height = Height;
+			desc.MipLevels = MipLevels;
+			desc.ArraySize = ArraySize;
+			desc.Format = Format;
+
+			// TODO: missing options
+			desc.SampleDesc = .(1, 0);
+			desc.Usage = .Immutable;
+			desc.BindFlags = .ShaderResource;
+			desc.CpuAccessFlags = .None;
+			desc.MiscFlags = .None;
+
+			return desc;
+		}
+
+		public static implicit operator NativeTex2DDesc(Self desc) => desc.ToNative();
+	}
+
 	extension Texture2D
 	{
-		internal ID3D11Texture2D* nativeTexture ~ _?.Release();
-		internal Texture2DDescription nativeDesc;
+		protected internal ID3D11Texture2D* nativeTexture ~ _?.Release();
+		protected internal NativeTex2DDesc nativeDesc;
 
 		public override uint32 Width => nativeDesc.Width;
 		public override uint32 Height => nativeDesc.Height;
@@ -48,5 +75,22 @@ namespace GlitchyEngine.Renderer
 
 			nativeTexture.GetDescription(out nativeDesc);
 		}
+
+		protected override void CreateTexturePlatform(Texture2DDesc desc, void* data, uint32 linePitch)
+		{
+			nativeTexture?.Release();
+			nativeView?.Release();
+
+			nativeDesc = desc;
+			SubresourceData resData = .(data, linePitch, 0);
+			
+			var result = _context.[Friend]nativeDevice.CreateTexture2D(ref nativeDesc, &resData, &nativeTexture);
+
+			Log.EngineLogger.Assert(result.Succeeded, scope $"Failed to create texture 2D. Error ({result.Underlying}): {result}");
+
+			result = _context.[Friend]nativeDevice.CreateShaderResourceView(nativeTexture, null, &nativeView);
+			
+			Log.EngineLogger.Assert(result.Succeeded, scope $"Failed to create texture view. Error ({result.Underlying}): {result}");
+		}
 	}
 }
diff --git a/GlitchyEngine/src/Renderer/Texture.bf b/GlitchyEngine/src/Renderer/Texture.bf
index 1c3f649..11cf489 100644
--- a/GlitchyEngine/src/Renderer/Texture.bf
+++ b/GlitchyEngine/src/Renderer/Texture.bf
@@ -46,6 +46,15 @@ namespace GlitchyEngine.Renderer
 		}
 	}
 
+	public struct Texture2DDesc
+	{
+		public uint32 Width;
+		public uint32 Height;
+		public uint32 ArraySize;
+		public uint32 MipLevels;
+		public Format Format;
+	}
+
 	public class Texture2D : Texture
 	{
 		protected String _path ~ delete _;
@@ -55,6 +64,8 @@ namespace GlitchyEngine.Renderer
 		public override uint32 Depth => 1;
 		public override extern uint32 ArraySize {get;}
 		public override extern uint32 MipLevels {get;}
+		
+		protected this(GraphicsContext context) : base(context) {}
 
 		public this(GraphicsContext context, String path) : base(context)
 		{
@@ -63,5 +74,7 @@ namespace GlitchyEngine.Renderer
 		}
 
 		protected extern void LoadTexturePlatform();
+		
+		protected extern void CreateTexturePlatform(Texture2DDesc desc, void* data, uint32 linePitch);
 	}
 }