From df820a72def62319fe97236a2006c64bfb7c065a Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 12 Jan 2021 18:50:54 -0300
Subject: Implement clear buffer (fast path) (#1902)

* Implement clear buffer (fast path)

* Remove blank line
---
 Ryujinx.Graphics.Gpu/Memory/BufferManager.cs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

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

diff --git a/Ryujinx.Graphics.Gpu/Memory/BufferManager.cs b/Ryujinx.Graphics.Gpu/Memory/BufferManager.cs
index 1d48b38c..0c643191 100644
--- a/Ryujinx.Graphics.Gpu/Memory/BufferManager.cs
+++ b/Ryujinx.Graphics.Gpu/Memory/BufferManager.cs
@@ -821,6 +821,28 @@ namespace Ryujinx.Graphics.Gpu.Memory
             dstBuffer.Flush(dstAddress, size);
         }
 
+        /// <summary>
+        /// Clears a buffer at a given address with the specified value.
+        /// </summary>
+        /// <remarks>
+        /// Both the address and size must be aligned to 4 bytes.
+        /// </remarks>
+        /// <param name="gpuVa">GPU virtual address of the region to clear</param>
+        /// <param name="size">Number of bytes to clear</param>
+        /// <param name="value">Value to be written into the buffer</param>
+        public void ClearBuffer(GpuVa gpuVa, ulong size, uint value)
+        {
+            ulong address = TranslateAndCreateBuffer(gpuVa.Pack(), size);
+
+            Buffer buffer = GetBuffer(address, size);
+
+            int offset = (int)(address - buffer.Address);
+
+            _context.Renderer.Pipeline.ClearBuffer(buffer.Handle, offset, (int)size, value);
+
+            buffer.Flush(address, size);
+        }
+
         /// <summary>
         /// Gets a buffer sub-range for a given memory range.
         /// </summary>
-- 
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