From a38a72b0622f89897bdcd01b6d00ea6bc142c34f Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Wed, 25 Apr 2018 23:11:26 -0300
Subject: Some small sync primitive fixes, logging fixes, started to implement
 the 2D engine on the GPU, fixed DrawArrays, implemented a few more shader
 instructions, made a start on nvdrv refactor, etc...

---
 Ryujinx.Graphics/Gpu/TextureWriter.cs | 45 +++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Ryujinx.Graphics/Gpu/TextureWriter.cs

(limited to 'Ryujinx.Graphics/Gpu/TextureWriter.cs')

diff --git a/Ryujinx.Graphics/Gpu/TextureWriter.cs b/Ryujinx.Graphics/Gpu/TextureWriter.cs
new file mode 100644
index 00000000..2f25de73
--- /dev/null
+++ b/Ryujinx.Graphics/Gpu/TextureWriter.cs
@@ -0,0 +1,45 @@
+using ChocolArm64.Memory;
+using Ryujinx.Graphics.Gal;
+using System;
+
+namespace Ryujinx.Graphics.Gpu
+{
+    public static class TextureWriter
+    {
+        public static void Write(AMemory Memory, Texture Texture, byte[] Data)
+        {
+            switch (Texture.Format)
+            {
+                case GalTextureFormat.A8B8G8R8: Write4Bpp(Memory, Texture, Data); break;
+
+                default:
+                    throw new NotImplementedException(Texture.Format.ToString());
+            }
+        }
+
+        private unsafe static void Write4Bpp(AMemory Memory, Texture Texture, byte[] Data)
+        {
+            int Width  = Texture.Width;
+            int Height = Texture.Height;
+
+            ISwizzle Swizzle = TextureHelper.GetSwizzle(Texture, Width, 4);
+
+            fixed (byte* BuffPtr = Data)
+            {
+                long InOffs = 0;
+
+                for (int Y = 0; Y < Height; Y++)
+                for (int X = 0; X < Width;  X++)
+                {
+                    long Offset = (uint)Swizzle.GetSwizzleOffset(X, Y);
+
+                    int Pixel = *(int*)(BuffPtr + InOffs);
+
+                    Memory.WriteInt32Unchecked(Texture.Position + Offset, Pixel);
+
+                    InOffs += 4;
+                }
+            }
+        }
+    }
+}
-- 
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