[surface, vk, pipeline, texture_cache] Texture Sampling Fix

src/video_core/renderer_vulkan/pipeline_helper.h

@@ -192,7 +192,7 @@ inline void PushImageDescriptors(TextureCache& texture_cache,
             const VideoCommon::ImageViewId image_view_id{(views++)->id};
             const VideoCommon::SamplerId sampler_id{*(samplers++)};
             ImageView& image_view{texture_cache.GetImageView(image_view_id)};
-            const VkImageView vk_image_view{image_view.SampledHandle(desc.type)};
+            const VkImageView vk_image_view{image_view.SampledHandle(desc.type, desc.is_integer)};
             const Sampler& sampler{texture_cache.GetSampler(sampler_id)};
             const bool use_fallback_sampler{sampler.HasAddedAnisotropy() &&
                                             !image_view.SupportsAnisotropy()};

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -45,6 +45,7 @@ using VideoCore::Surface::BytesPerBlock;
 using VideoCore::Surface::HasAlpha;
 using VideoCore::Surface::IsPixelFormatASTC;
 using VideoCore::Surface::IsPixelFormatInteger;
+using VideoCore::Surface::IntegerCompatibleFormat;
 using VideoCore::Surface::NormalizedCompatibleFormat;
 using VideoCore::Surface::SurfaceType;
 
@@ -2223,22 +2224,40 @@ VkImageView ImageView::StorageView(Shader::TextureType texture_type,
     return *view;
 }
 
-VkImageView ImageView::SampledHandle(Shader::TextureType texture_type) {
-    if (!IsPixelFormatInteger(format)) {
-        return Handle(texture_type);
+VkImageView ImageView::SampledHandle(Shader::TextureType texture_type, bool use_integer_view) {
+    const auto type_index = static_cast<size_t>(texture_type);
+
+    if (use_integer_view || !IsPixelFormatInteger(format)) {
+        if (!use_integer_view || IsPixelFormatInteger(format)) {
+            return Handle(texture_type);
+        }
+
+        const auto compatible_integer = IntegerCompatibleFormat(format);
+        if (!compatible_integer) {
+            return Handle(texture_type);
+        }
+        auto& int_view = sampled_integer_views[type_index];
+        if (int_view) {
+            return *int_view;
+        }
+        const auto format_info =
+            MaxwellToVK::SurfaceFormat(*device, FormatType::Optimal, true, *compatible_integer);
+        int_view = CreateSampledView(texture_type, format_info.format);
+        return *int_view;
     }
+
     const auto compatible_format = NormalizedCompatibleFormat(format);
     if (!compatible_format) {
         return Handle(texture_type);
     }
-    auto& view = sampled_float_views[static_cast<size_t>(texture_type)];
-    if (view) {
-        return *view;
+    auto& float_view = sampled_float_views[type_index];
+    if (float_view) {
+        return *float_view;
     }
     const auto format_info =
         MaxwellToVK::SurfaceFormat(*device, FormatType::Optimal, true, *compatible_format);
-    view = CreateSampledView(texture_type, format_info.format);
-    return *view;
+    float_view = CreateSampledView(texture_type, format_info.format);
+    return *float_view;
 }
 
 bool ImageView::IsRescaled() const noexcept {

src/video_core/renderer_vulkan/vk_texture_cache.h

@@ -247,7 +247,8 @@ public:
         return *image_views[static_cast<size_t>(texture_type)];
     }
 
-    [[nodiscard]] VkImageView SampledHandle(Shader::TextureType texture_type);
+    [[nodiscard]] VkImageView SampledHandle(Shader::TextureType texture_type,
+                                            bool use_integer_view);
 
     [[nodiscard]] VkImage ImageHandle() const noexcept {
         return image_handle;
@@ -284,6 +285,7 @@ private:
 
     std::array<vk::ImageView, Shader::NUM_TEXTURE_TYPES> image_views;
     std::array<vk::ImageView, Shader::NUM_TEXTURE_TYPES> sampled_float_views;
+    std::array<vk::ImageView, Shader::NUM_TEXTURE_TYPES> sampled_integer_views;
     std::array<std::optional<u32>, Shader::NUM_TEXTURE_TYPES> view_layer_counts{};
     std::unique_ptr<StorageViews> storage_views;
     vk::ImageView depth_view;

src/video_core/surface.cpp

@@ -443,6 +443,39 @@ std::optional<PixelFormat> NormalizedCompatibleFormat(PixelFormat format) {
     }
 }
 
+std::optional<PixelFormat> IntegerCompatibleFormat(PixelFormat format) {
+    switch (format) {
+    case PixelFormat::A8B8G8R8_UNORM:
+        return PixelFormat::A8B8G8R8_UINT;
+    case PixelFormat::A8B8G8R8_SNORM:
+        return PixelFormat::A8B8G8R8_SINT;
+    case PixelFormat::A2B10G10R10_UNORM:
+        return PixelFormat::A2B10G10R10_UINT;
+    case PixelFormat::R8_UNORM:
+        return PixelFormat::R8_UINT;
+    case PixelFormat::R8_SNORM:
+        return PixelFormat::R8_SINT;
+    case PixelFormat::R8G8_UNORM:
+        return PixelFormat::R8G8_UINT;
+    case PixelFormat::R8G8_SNORM:
+        return PixelFormat::R8G8_SINT;
+    case PixelFormat::R16_UNORM:
+        return PixelFormat::R16_UINT;
+    case PixelFormat::R16_SNORM:
+        return PixelFormat::R16_SINT;
+    case PixelFormat::R16G16_UNORM:
+        return PixelFormat::R16G16_UINT;
+    case PixelFormat::R16G16_SNORM:
+        return PixelFormat::R16G16_SINT;
+    case PixelFormat::R16G16B16A16_UNORM:
+        return PixelFormat::R16G16B16A16_UINT;
+    case PixelFormat::R16G16B16A16_SNORM:
+        return PixelFormat::R16G16B16A16_SINT;
+    default:
+        return std::nullopt;
+    }
+}
+
 size_t PixelComponentSizeBitsInteger(PixelFormat format) {
     switch (format) {
     case PixelFormat::A8B8G8R8_SINT:

src/video_core/surface.h

@@ -520,6 +520,7 @@ bool IsPixelFormatInteger(PixelFormat format);
 bool IsPixelFormatSignedInteger(PixelFormat format);
 
 std::optional<PixelFormat> NormalizedCompatibleFormat(PixelFormat format);
+std::optional<PixelFormat> IntegerCompatibleFormat(PixelFormat format);
 
 size_t PixelComponentSizeBitsInteger(PixelFormat format);