From ce1d5be212e6f71a7ca32c3bd7b48e32d9f51b9a Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 8 Sep 2018 14:51:50 -0300
Subject: Move GPU emulation from Ryujinx.HLE to Ryujinx.Graphics and misc
 changes (#402)

* Move GPU LLE emulation from HLE to Graphics

* Graphics: Move Gal/Texture to Texture

* Remove Engines/ directory and namespace

* Use tables for image formats

* Abstract OpCode decoding

* Simplify image table

* Do not leak Read* symbols in TextureReader

* Fixups

* Rename IGalFrameBuffer -> IGalRenderTarget

* Remove MaxBpp hardcoded value

* Change yet again texture data and add G8R8 flipping

* Rename GalFrameBufferFormat to GalSurfaceFormat

* Unident EnsureSetup in ImageHandler

* Add IsCompressed

* Address some feedback
---
 Ryujinx.Graphics/Texture/TextureHelper.cs | 45 +++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Ryujinx.Graphics/Texture/TextureHelper.cs

(limited to 'Ryujinx.Graphics/Texture/TextureHelper.cs')

diff --git a/Ryujinx.Graphics/Texture/TextureHelper.cs b/Ryujinx.Graphics/Texture/TextureHelper.cs
new file mode 100644
index 00000000..8130ab41
--- /dev/null
+++ b/Ryujinx.Graphics/Texture/TextureHelper.cs
@@ -0,0 +1,45 @@
+using ChocolArm64.Memory;
+using Ryujinx.Graphics.Gal;
+using Ryujinx.Graphics.Memory;
+using System;
+
+namespace Ryujinx.Graphics.Texture
+{
+    static class TextureHelper
+    {
+        public static ISwizzle GetSwizzle(TextureInfo Texture, int BlockWidth, int Bpp)
+        {
+            int Width = (Texture.Width + (BlockWidth - 1)) / BlockWidth;
+
+            int AlignMask = Texture.TileWidth * (64 / Bpp) - 1;
+
+            Width = (Width + AlignMask) & ~AlignMask;
+
+            switch (Texture.Swizzle)
+            {
+                case TextureSwizzle._1dBuffer:
+                case TextureSwizzle.Pitch:
+                case TextureSwizzle.PitchColorKey:
+                     return new LinearSwizzle(Texture.Pitch, Bpp);
+
+                case TextureSwizzle.BlockLinear:
+                case TextureSwizzle.BlockLinearColorKey:
+                    return new BlockLinearSwizzle(Width, Bpp, Texture.BlockHeight);
+            }
+
+            throw new NotImplementedException(Texture.Swizzle.ToString());
+        }
+
+        public static (AMemory Memory, long Position) GetMemoryAndPosition(
+            IAMemory Memory,
+            long     Position)
+        {
+            if (Memory is NvGpuVmm Vmm)
+            {
+                return (Vmm.Memory, Vmm.GetPhysicalAddress(Position));
+            }
+
+            return ((AMemory)Memory, Position);
+        }
+    }
+}
-- 
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