From b530f0e1104723b894695b2860cf0f568f24cc9a Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Tue, 2 Mar 2021 22:30:54 +0000
Subject: Texture Cache: "Texture Groups" and "Texture Dependencies" (#2001)

* Initial implementation (3d tex mips broken)

This works rather well for most games, just need to fix 3d texture mips.

* Cleanup

* Address feedback

* Copy Dependencies and various other fixes

* Fix layer/level offset for copy from view<->view.

* Remove dirty flag from dependency

The dirty flag behaviour is not needed - DeferredCopy is all we need.

* Fix tracking mip slices.

* Propagate granularity (fix astral chain)

* Address Feedback pt 1

* Save slice sizes as part of SizeInfo

* Fix nits

* Fix disposing multiple dependencies causing a crash

This list is obviously modified when removing dependencies, so create a copy of it.
---
 Ryujinx.Graphics.Texture/SizeCalculator.cs | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

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

diff --git a/Ryujinx.Graphics.Texture/SizeCalculator.cs b/Ryujinx.Graphics.Texture/SizeCalculator.cs
index 2dc60869..7eee13c0 100644
--- a/Ryujinx.Graphics.Texture/SizeCalculator.cs
+++ b/Ryujinx.Graphics.Texture/SizeCalculator.cs
@@ -9,6 +9,19 @@ namespace Ryujinx.Graphics.Texture
     {
         private const int StrideAlignment = 32;
 
+        private static int Calculate3DOffsetCount(int levels, int depth)
+        {
+            int offsetCount = depth;
+
+            while (--levels > 0)
+            {
+                depth = Math.Max(1, depth >> 1);
+                offsetCount += depth;
+            }
+
+            return offsetCount;
+        }
+
         public static SizeInfo GetBlockLinearTextureSize(
             int width,
             int height,
@@ -27,8 +40,9 @@ namespace Ryujinx.Graphics.Texture
 
             int layerSize = 0;
 
-            int[] allOffsets = new int[levels * layers * depth];
+            int[] allOffsets = new int[is3D ? Calculate3DOffsetCount(levels, depth) : levels * layers * depth];
             int[] mipOffsets = new int[levels];
+            int[] sliceSizes = new int[levels];
 
             int mipGobBlocksInY = gobBlocksInY;
             int mipGobBlocksInZ = gobBlocksInZ;
@@ -36,6 +50,8 @@ namespace Ryujinx.Graphics.Texture
             int gobWidth  = (GobStride / bytesPerPixel) * gobBlocksInTileX;
             int gobHeight = gobBlocksInY * GobHeight;
 
+            int depthLevelOffset = 0;
+
             for (int level = 0; level < levels; level++)
             {
                 int w = Math.Max(1, width  >> level);
@@ -86,13 +102,16 @@ namespace Ryujinx.Graphics.Texture
                         int zLow  = z &  mask;
                         int zHigh = z & ~mask;
 
-                        allOffsets[z * levels + level] = baseOffset + zLow * gobSize + zHigh * sliceSize;
+                        allOffsets[z + depthLevelOffset] = baseOffset + zLow * gobSize + zHigh * sliceSize;
                     }
                 }
 
                 mipOffsets[level] = layerSize;
+                sliceSizes[level] = totalBlocksOfGobsInY * robSize;
+
+                layerSize += totalBlocksOfGobsInZ * sliceSizes[level];
 
-                layerSize += totalBlocksOfGobsInZ * totalBlocksOfGobsInY * robSize;
+                depthLevelOffset += d;
             }
 
             if (layers > 1)
@@ -133,7 +152,7 @@ namespace Ryujinx.Graphics.Texture
                 }
             }
 
-            return new SizeInfo(mipOffsets, allOffsets, levels, layerSize, totalSize);
+            return new SizeInfo(mipOffsets, allOffsets, sliceSizes, depth, levels, layerSize, totalSize, is3D);
         }
 
         public static SizeInfo GetLinearTextureSize(int stride, int height, int blockHeight)
@@ -142,7 +161,7 @@ namespace Ryujinx.Graphics.Texture
             // so we only need to handle a single case (2D textures without mipmaps).
             int totalSize = stride * BitUtils.DivRoundUp(height, blockHeight);
 
-            return new SizeInfo(new int[] { 0 }, new int[] { 0 }, 1, totalSize, totalSize);
+            return new SizeInfo(totalSize);
         }
 
         private static int AlignLayerSize(
-- 
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