From 6e0799580f0d1b473a79471c5d365c6524d97a86 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 11 Jan 2022 16:15:17 -0300
Subject: Fix render target clear when sizes mismatch (#2994)

---
 Ryujinx.Graphics.Gpu/Image/Texture.cs        | 14 ++++++++-
 Ryujinx.Graphics.Gpu/Image/TextureManager.cs | 43 ++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletion(-)

(limited to 'Ryujinx.Graphics.Gpu/Image')

diff --git a/Ryujinx.Graphics.Gpu/Image/Texture.cs b/Ryujinx.Graphics.Gpu/Image/Texture.cs
index eacfa4f5..b2fa15a2 100644
--- a/Ryujinx.Graphics.Gpu/Image/Texture.cs
+++ b/Ryujinx.Graphics.Gpu/Image/Texture.cs
@@ -47,6 +47,16 @@ namespace Ryujinx.Graphics.Gpu.Image
         /// </summary>
         public Target Target { get; private set; }
 
+        /// <summary>
+        /// Texture width.
+        /// </summary>
+        public int Width { get; private set; }
+
+        /// <summary>
+        /// Texture height.
+        /// </summary>
+        public int Height { get; private set; }
+
         /// <summary>
         /// Texture information.
         /// </summary>
@@ -926,7 +936,7 @@ namespace Ryujinx.Graphics.Gpu.Image
                 FlushTextureDataToGuest(tracked);
             }
         }
-        
+
         /// <summary>
         /// Gets a host texture to use for flushing the texture, at 1x resolution.
         /// If the HostTexture is already at 1x resolution, it is returned directly.
@@ -1322,6 +1332,8 @@ namespace Ryujinx.Graphics.Gpu.Image
         {
             Info = info;
             Target = info.Target;
+            Width = info.Width;
+            Height = info.Height;
             CanForceAnisotropy = CanTextureForceAnisotropy();
 
             _depth  = info.GetDepth();
diff --git a/Ryujinx.Graphics.Gpu/Image/TextureManager.cs b/Ryujinx.Graphics.Gpu/Image/TextureManager.cs
index 70cb57d0..90e26442 100644
--- a/Ryujinx.Graphics.Gpu/Image/TextureManager.cs
+++ b/Ryujinx.Graphics.Gpu/Image/TextureManager.cs
@@ -19,6 +19,9 @@ namespace Ryujinx.Graphics.Gpu.Image
         private Texture _rtDepthStencil;
         private ITexture _rtHostDs;
 
+        public int ClipRegionWidth { get; private set; }
+        public int ClipRegionHeight { get; private set; }
+
         /// <summary>
         /// The scaling factor applied to all currently bound render targets.
         /// </summary>
@@ -210,6 +213,17 @@ namespace Ryujinx.Graphics.Gpu.Image
             return changesScale || ScaleNeedsUpdated(depthStencil);
         }
 
+        /// <summary>
+        /// Sets the host clip region, which should be the intersection of all render target texture sizes.
+        /// </summary>
+        /// <param name="width">Width of the clip region, defined as the minimum width across all bound textures</param>
+        /// <param name="height">Height of the clip region, defined as the minimum height across all bound textures</param>
+        public void SetClipRegion(int width, int height)
+        {
+            ClipRegionWidth = width;
+            ClipRegionHeight = height;
+        }
+
         /// <summary>
         /// Gets the first available bound colour target, or the depth stencil target if not present.
         /// </summary>
@@ -409,6 +423,35 @@ namespace Ryujinx.Graphics.Gpu.Image
             }
         }
 
+        /// <summary>
+        /// Update host framebuffer attachments based on currently bound render target buffers.
+        /// </summary>
+        /// <remarks>
+        /// All attachments other than <paramref name="index"/> will be unbound.
+        /// </remarks>
+        /// <param name="index">Index of the render target color to be updated</param>
+        public void UpdateRenderTarget(int index)
+        {
+            new Span<ITexture>(_rtHostColors).Fill(null);
+            _rtHostColors[index] = _rtColors[index]?.HostTexture;
+
+            _context.Renderer.Pipeline.SetRenderTargets(_rtHostColors, null);
+        }
+
+        /// <summary>
+        /// Update host framebuffer attachments based on currently bound render target buffers.
+        /// </summary>
+        /// <remarks>
+        /// All color attachments will be unbound.
+        /// </remarks>
+        public void UpdateRenderTargetDepthStencil()
+        {
+            new Span<ITexture>(_rtHostColors).Fill(null);
+            _rtHostDs = _rtDepthStencil?.HostTexture;
+
+            _context.Renderer.Pipeline.SetRenderTargets(_rtHostColors, _rtHostDs);
+        }
+
         /// <summary>
         /// Forces all textures, samplers, images and render targets to be rebound the next time
         /// CommitGraphicsBindings is called.
-- 
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