From 42c944b250d8d5c8147b24b3a453cba29968d46c Mon Sep 17 00:00:00 2001
From: Wollnashorn <Wollnashorn@users.noreply.github.com>
Date: Thu, 15 Jun 2023 18:19:32 +0200
Subject: video_core: Add per-image anisotropy heuristics (format & mip count)

---
 src/video_core/texture_cache/image_view_base.cpp | 39 ++++++++++++++++++++++++
 src/video_core/texture_cache/image_view_base.h   |  2 ++
 2 files changed, 41 insertions(+)

(limited to 'src/video_core/texture_cache')

diff --git a/src/video_core/texture_cache/image_view_base.cpp b/src/video_core/texture_cache/image_view_base.cpp
index d134b6738..26fa6d63e 100644
--- a/src/video_core/texture_cache/image_view_base.cpp
+++ b/src/video_core/texture_cache/image_view_base.cpp
@@ -45,4 +45,43 @@ ImageViewBase::ImageViewBase(const ImageInfo& info, const ImageViewInfo& view_in
 
 ImageViewBase::ImageViewBase(const NullImageViewParams&) : image_id{NULL_IMAGE_ID} {}
 
+bool ImageViewBase::SupportsAnisotropy() const noexcept {
+    using namespace VideoCommon;
+    switch (format) {
+    case PixelFormat::R8_UNORM:
+    case PixelFormat::R8_SNORM:
+    case PixelFormat::R8_SINT:
+    case PixelFormat::R8_UINT:
+    case PixelFormat::BC4_UNORM:
+    case PixelFormat::BC4_SNORM:
+    case PixelFormat::BC5_UNORM:
+    case PixelFormat::BC5_SNORM:
+    case PixelFormat::R32G32_FLOAT:
+    case PixelFormat::R32G32_SINT:
+    case PixelFormat::R32_FLOAT:
+    case PixelFormat::R16_FLOAT:
+    case PixelFormat::R16_UNORM:
+    case PixelFormat::R16_SNORM:
+    case PixelFormat::R16_UINT:
+    case PixelFormat::R16_SINT:
+    case PixelFormat::R16G16_UNORM:
+    case PixelFormat::R16G16_FLOAT:
+    case PixelFormat::R16G16_UINT:
+    case PixelFormat::R16G16_SINT:
+    case PixelFormat::R16G16_SNORM:
+    case PixelFormat::R8G8_UNORM:
+    case PixelFormat::R8G8_SNORM:
+    case PixelFormat::R8G8_SINT:
+    case PixelFormat::R8G8_UINT:
+    case PixelFormat::R32G32_UINT:
+    case PixelFormat::R32_UINT:
+    case PixelFormat::R32_SINT:
+    case PixelFormat::G4R4_UNORM:
+        return false;
+    default:
+        break;
+    }
+    return range.extent.levels > 1;
+}
+
 } // namespace VideoCommon
diff --git a/src/video_core/texture_cache/image_view_base.h b/src/video_core/texture_cache/image_view_base.h
index a25ae1d4a..87549ffff 100644
--- a/src/video_core/texture_cache/image_view_base.h
+++ b/src/video_core/texture_cache/image_view_base.h
@@ -33,6 +33,8 @@ struct ImageViewBase {
         return type == ImageViewType::Buffer;
     }
 
+    [[nodiscard]] bool SupportsAnisotropy() const noexcept;
+
     ImageId image_id{};
     GPUVAddr gpu_addr = 0;
     PixelFormat format{};
-- 
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