From 2348eb41f38a6e52e52d121adfc4c605763209a7 Mon Sep 17 00:00:00 2001
From: Morph <39850852+Morph1984@users.noreply.github.com>
Date: Wed, 17 Nov 2021 15:04:38 -0500
Subject: [PATCH] video_core: Add S8_UINT stencil format

---
 src/video_core/gpu.h                     |  1 +
 src/video_core/surface.cpp               |  7 +++++++
 src/video_core/surface.h                 | 14 +++++++++++---
 src/video_core/texture_cache/formatter.h |  2 ++
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/video_core/gpu.h b/src/video_core/gpu.h
index 05e5c94f3d..c89a5d693c 100644
--- a/src/video_core/gpu.h
+++ b/src/video_core/gpu.h
@@ -83,6 +83,7 @@ enum class DepthFormat : u32 {
     S8_UINT_Z24_UNORM = 0x14,
     D24X8_UNORM = 0x15,
     D24S8_UNORM = 0x16,
+    S8_UINT = 0x17,
     D24C8_UNORM = 0x18,
     D32_FLOAT_S8X24_UINT = 0x19,
 };
diff --git a/src/video_core/surface.cpp b/src/video_core/surface.cpp
index 58d262446f..a36015c8c1 100644
--- a/src/video_core/surface.cpp
+++ b/src/video_core/surface.cpp
@@ -82,6 +82,8 @@ PixelFormat PixelFormatFromDepthFormat(Tegra::DepthFormat format) {
         return PixelFormat::D32_FLOAT;
     case Tegra::DepthFormat::D16_UNORM:
         return PixelFormat::D16_UNORM;
+    case Tegra::DepthFormat::S8_UINT:
+        return PixelFormat::S8_UINT;
     case Tegra::DepthFormat::D32_FLOAT_S8X24_UINT:
         return PixelFormat::D32_FLOAT_S8_UINT;
     default:
@@ -213,6 +215,11 @@ SurfaceType GetFormatType(PixelFormat pixel_format) {
         return SurfaceType::Depth;
     }
 
+    if (static_cast<std::size_t>(pixel_format) <
+        static_cast<std::size_t>(PixelFormat::MaxStencilFormat)) {
+        return SurfaceType::Stencil;
+    }
+
     if (static_cast<std::size_t>(pixel_format) <
         static_cast<std::size_t>(PixelFormat::MaxDepthStencilFormat)) {
         return SurfaceType::DepthStencil;
diff --git a/src/video_core/surface.h b/src/video_core/surface.h
index 2ce7c7d338..33e8d24ab1 100644
--- a/src/video_core/surface.h
+++ b/src/video_core/surface.h
@@ -110,8 +110,12 @@ enum class PixelFormat {
 
     MaxDepthFormat,
 
+    // Stencil formats
+    S8_UINT = MaxDepthFormat,
+    MaxStencilFormat,
+
     // DepthStencil formats
-    D24_UNORM_S8_UINT = MaxDepthFormat,
+    D24_UNORM_S8_UINT = MaxStencilFormat,
     S8_UINT_D24_UNORM,
     D32_FLOAT_S8_UINT,
 
@@ -125,8 +129,9 @@ constexpr std::size_t MaxPixelFormat = static_cast<std::size_t>(PixelFormat::Max
 enum class SurfaceType {
     ColorTexture = 0,
     Depth = 1,
-    DepthStencil = 2,
-    Invalid = 3,
+    Stencil = 2,
+    DepthStencil = 3,
+    Invalid = 4,
 };
 
 enum class SurfaceTarget {
@@ -229,6 +234,7 @@ constexpr std::array<u32, MaxPixelFormat> BLOCK_WIDTH_TABLE = {{
     1,  // E5B9G9R9_FLOAT
     1,  // D32_FLOAT
     1,  // D16_UNORM
+    1,  // S8_UINT
     1,  // D24_UNORM_S8_UINT
     1,  // S8_UINT_D24_UNORM
     1,  // D32_FLOAT_S8_UINT
@@ -328,6 +334,7 @@ constexpr std::array<u32, MaxPixelFormat> BLOCK_HEIGHT_TABLE = {{
     1,  // E5B9G9R9_FLOAT
     1,  // D32_FLOAT
     1,  // D16_UNORM
+    1,  // S8_UINT
     1,  // D24_UNORM_S8_UINT
     1,  // S8_UINT_D24_UNORM
     1,  // D32_FLOAT_S8_UINT
@@ -427,6 +434,7 @@ constexpr std::array<u32, MaxPixelFormat> BITS_PER_BLOCK_TABLE = {{
     32,  // E5B9G9R9_FLOAT
     32,  // D32_FLOAT
     16,  // D16_UNORM
+    8,   // S8_UINT
     32,  // D24_UNORM_S8_UINT
     32,  // S8_UINT_D24_UNORM
     64,  // D32_FLOAT_S8_UINT
diff --git a/src/video_core/texture_cache/formatter.h b/src/video_core/texture_cache/formatter.h
index c6cf0583fc..b2c81057ba 100644
--- a/src/video_core/texture_cache/formatter.h
+++ b/src/video_core/texture_cache/formatter.h
@@ -194,6 +194,8 @@ struct fmt::formatter<VideoCore::Surface::PixelFormat> : fmt::formatter<fmt::str
                 return "D32_FLOAT";
             case PixelFormat::D16_UNORM:
                 return "D16_UNORM";
+            case PixelFormat::S8_UINT:
+                return "S8_UINT";
             case PixelFormat::D24_UNORM_S8_UINT:
                 return "D24_UNORM_S8_UINT";
             case PixelFormat::S8_UINT_D24_UNORM: