Fix mipmap base level being ignored for sampled textures and images (#1911)

* Fix mipmap base level being ignored for sampled textures and images

* Fix layer size and max level for textures

* Missing XML doc + reorder comments

1 files changed, 25 insertions, 11 deletions

diff --git a/Ryujinx.Graphics.Texture/SizeCalculator.cs b/Ryujinx.Graphics.Texture/SizeCalculator.cs
index 9339ba12..2dc60869 100644
--- a/Ryujinx.Graphics.Texture/SizeCalculator.cs
+++ b/Ryujinx.Graphics.Texture/SizeCalculator.cs
@@ -20,7 +20,8 @@ namespace Ryujinx.Graphics.Texture
             int bytesPerPixel,
             int gobBlocksInY,
             int gobBlocksInZ,
-            int gobBlocksInTileX)
+            int gobBlocksInTileX,
+            int gpuLayerSize = 0)
         {
             bool is3D = depth > 1;
 
@@ -94,14 +95,29 @@ namespace Ryujinx.Graphics.Texture
                 layerSize += totalBlocksOfGobsInZ * totalBlocksOfGobsInY * robSize;
             }
 
-            layerSize = AlignLayerSize(
-                layerSize,
-                height,
-                depth,
-                blockHeight,
-                gobBlocksInY,
-                gobBlocksInZ,
-                gobBlocksInTileX);
+            if (layers > 1)
+            {
+                layerSize = AlignLayerSize(
+                    layerSize,
+                    height,
+                    depth,
+                    blockHeight,
+                    gobBlocksInY,
+                    gobBlocksInZ,
+                    gobBlocksInTileX);
+            }
+
+            int totalSize;
+
+            if (layerSize < gpuLayerSize)
+            {
+                totalSize = (layers - 1) * gpuLayerSize + layerSize;
+                layerSize = gpuLayerSize;
+            }
+            else
+            {
+                totalSize = layerSize * layers;
+            }
 
             if (!is3D)
             {
@@ -117,8 +133,6 @@ namespace Ryujinx.Graphics.Texture
                 }
             }
 
-            int totalSize = layerSize * layers;
-
             return new SizeInfo(mipOffsets, allOffsets, levels, layerSize, totalSize);
         }