Merge pull request #4049 from ReinUsesLisp/separate-samplers

shader/texture: Join separate image and sampler pairs offline

src/video_core/engines/const_buffer_engine_interface.h

@@ -93,6 +93,7 @@ public:
     virtual SamplerDescriptor AccessBoundSampler(ShaderType stage, u64 offset) const = 0;
     virtual SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
                                                     u64 offset) const = 0;
+    virtual SamplerDescriptor AccessSampler(u32 handle) const = 0;
     virtual u32 GetBoundBuffer() const = 0;
 
     virtual VideoCore::GuestDriverProfile& AccessGuestDriverProfile() = 0;

src/video_core/engines/kepler_compute.cpp

@@ -92,8 +92,11 @@ SamplerDescriptor KeplerCompute::AccessBindlessSampler(ShaderType stage, u64 con
     ASSERT(stage == ShaderType::Compute);
     const auto& tex_info_buffer = launch_description.const_buffer_config[const_buffer];
     const GPUVAddr tex_info_address = tex_info_buffer.Address() + offset;
+    return AccessSampler(memory_manager.Read<u32>(tex_info_address));
+}
 
-    const Texture::TextureHandle tex_handle{memory_manager.Read<u32>(tex_info_address)};
+SamplerDescriptor KeplerCompute::AccessSampler(u32 handle) const {
+    const Texture::TextureHandle tex_handle{handle};
     const Texture::FullTextureInfo tex_info = GetTextureInfo(tex_handle);
     SamplerDescriptor result = SamplerDescriptor::FromTIC(tex_info.tic);
     result.is_shadow.Assign(tex_info.tsc.depth_compare_enabled.Value());

src/video_core/engines/kepler_compute.h

@@ -219,6 +219,8 @@ public:
     SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
                                             u64 offset) const override;
 
+    SamplerDescriptor AccessSampler(u32 handle) const override;
+
     u32 GetBoundBuffer() const override {
         return regs.tex_cb_index;
     }

src/video_core/engines/maxwell_3d.cpp

@@ -740,8 +740,11 @@ SamplerDescriptor Maxwell3D::AccessBindlessSampler(ShaderType stage, u64 const_b
     const auto& shader = state.shader_stages[static_cast<std::size_t>(stage)];
     const auto& tex_info_buffer = shader.const_buffers[const_buffer];
     const GPUVAddr tex_info_address = tex_info_buffer.address + offset;
+    return AccessSampler(memory_manager.Read<u32>(tex_info_address));
+}
 
-    const Texture::TextureHandle tex_handle{memory_manager.Read<u32>(tex_info_address)};
+SamplerDescriptor Maxwell3D::AccessSampler(u32 handle) const {
+    const Texture::TextureHandle tex_handle{handle};
     const Texture::FullTextureInfo tex_info = GetTextureInfo(tex_handle);
     SamplerDescriptor result = SamplerDescriptor::FromTIC(tex_info.tic);
     result.is_shadow.Assign(tex_info.tsc.depth_compare_enabled.Value());

src/video_core/engines/maxwell_3d.h

@@ -1404,6 +1404,8 @@ public:
     SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
                                             u64 offset) const override;
 
+    SamplerDescriptor AccessSampler(u32 handle) const override;
+
     u32 GetBoundBuffer() const override {
         return regs.tex_cb_index;
     }

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -66,10 +66,22 @@ constexpr std::size_t NumSupportedVertexAttributes = 16;
 template <typename Engine, typename Entry>
 Tegra::Texture::FullTextureInfo GetTextureInfo(const Engine& engine, const Entry& entry,
                                                ShaderType shader_type, std::size_t index = 0) {
-    if (entry.is_bindless) {
+    if constexpr (std::is_same_v<Entry, SamplerEntry>) {
-        const auto tex_handle = engine.AccessConstBuffer32(shader_type, entry.buffer, entry.offset);
+        if (entry.is_separated) {
-        return engine.GetTextureInfo(tex_handle);
+            const u32 buffer_1 = entry.buffer;
+            const u32 buffer_2 = entry.secondary_buffer;
+            const u32 offset_1 = entry.offset;
+            const u32 offset_2 = entry.secondary_offset;
+            const u32 handle_1 = engine.AccessConstBuffer32(shader_type, buffer_1, offset_1);
+            const u32 handle_2 = engine.AccessConstBuffer32(shader_type, buffer_2, offset_2);
+            return engine.GetTextureInfo(handle_1 | handle_2);
         }
+    }
+    if (entry.is_bindless) {
+        const u32 handle = engine.AccessConstBuffer32(shader_type, entry.buffer, entry.offset);
+        return engine.GetTextureInfo(handle);
+    }
+
     const auto& gpu_profile = engine.AccessGuestDriverProfile();
     const u32 offset = entry.offset + static_cast<u32>(index * gpu_profile.GetTextureHandlerSize());
     if constexpr (std::is_same_v<Engine, Tegra::Engines::Maxwell3D>) {

src/video_core/renderer_opengl/gl_shader_disk_cache.cpp

@@ -29,6 +29,8 @@ using VideoCommon::Shader::KeyMap;
 
 namespace {
 
+using VideoCommon::Shader::SeparateSamplerKey;
+
 using ShaderCacheVersionHash = std::array<u8, 64>;
 
 struct ConstBufferKey {
@@ -37,18 +39,26 @@ struct ConstBufferKey {
     u32 value = 0;
 };
 
-struct BoundSamplerKey {
+struct BoundSamplerEntry {
     u32 offset = 0;
     Tegra::Engines::SamplerDescriptor sampler;
 };
 
-struct BindlessSamplerKey {
+struct SeparateSamplerEntry {
+    u32 cbuf1 = 0;
+    u32 cbuf2 = 0;
+    u32 offset1 = 0;
+    u32 offset2 = 0;
+    Tegra::Engines::SamplerDescriptor sampler;
+};
+
+struct BindlessSamplerEntry {
     u32 cbuf = 0;
     u32 offset = 0;
     Tegra::Engines::SamplerDescriptor sampler;
 };
 
-constexpr u32 NativeVersion = 20;
+constexpr u32 NativeVersion = 21;
 
 ShaderCacheVersionHash GetShaderCacheVersionHash() {
     ShaderCacheVersionHash hash{};
@@ -87,12 +97,14 @@ bool ShaderDiskCacheEntry::Load(FileUtil::IOFile& file) {
     u32 texture_handler_size_value;
     u32 num_keys;
     u32 num_bound_samplers;
+    u32 num_separate_samplers;
     u32 num_bindless_samplers;
     if (file.ReadArray(&unique_identifier, 1) != 1 || file.ReadArray(&bound_buffer, 1) != 1 ||
         file.ReadArray(&is_texture_handler_size_known, 1) != 1 ||
         file.ReadArray(&texture_handler_size_value, 1) != 1 ||
         file.ReadArray(&graphics_info, 1) != 1 || file.ReadArray(&compute_info, 1) != 1 ||
         file.ReadArray(&num_keys, 1) != 1 || file.ReadArray(&num_bound_samplers, 1) != 1 ||
+        file.ReadArray(&num_separate_samplers, 1) != 1 ||
         file.ReadArray(&num_bindless_samplers, 1) != 1) {
         return false;
     }
@@ -101,23 +113,32 @@ bool ShaderDiskCacheEntry::Load(FileUtil::IOFile& file) {
     }
 
     std::vector<ConstBufferKey> flat_keys(num_keys);
-    std::vector<BoundSamplerKey> flat_bound_samplers(num_bound_samplers);
+    std::vector<BoundSamplerEntry> flat_bound_samplers(num_bound_samplers);
-    std::vector<BindlessSamplerKey> flat_bindless_samplers(num_bindless_samplers);
+    std::vector<SeparateSamplerEntry> flat_separate_samplers(num_separate_samplers);
+    std::vector<BindlessSamplerEntry> flat_bindless_samplers(num_bindless_samplers);
     if (file.ReadArray(flat_keys.data(), flat_keys.size()) != flat_keys.size() ||
         file.ReadArray(flat_bound_samplers.data(), flat_bound_samplers.size()) !=
             flat_bound_samplers.size() ||
+        file.ReadArray(flat_separate_samplers.data(), flat_separate_samplers.size()) !=
+            flat_separate_samplers.size() ||
         file.ReadArray(flat_bindless_samplers.data(), flat_bindless_samplers.size()) !=
             flat_bindless_samplers.size()) {
         return false;
     }
-    for (const auto& key : flat_keys) {
+    for (const auto& entry : flat_keys) {
-        keys.insert({{key.cbuf, key.offset}, key.value});
+        keys.insert({{entry.cbuf, entry.offset}, entry.value});
     }
-    for (const auto& key : flat_bound_samplers) {
+    for (const auto& entry : flat_bound_samplers) {
-        bound_samplers.emplace(key.offset, key.sampler);
+        bound_samplers.emplace(entry.offset, entry.sampler);
     }
-    for (const auto& key : flat_bindless_samplers) {
+    for (const auto& entry : flat_separate_samplers) {
-        bindless_samplers.insert({{key.cbuf, key.offset}, key.sampler});
+        SeparateSamplerKey key;
+        key.buffers = {entry.cbuf1, entry.cbuf2};
+        key.offsets = {entry.offset1, entry.offset2};
+        separate_samplers.emplace(key, entry.sampler);
+    }
+    for (const auto& entry : flat_bindless_samplers) {
+        bindless_samplers.insert({{entry.cbuf, entry.offset}, entry.sampler});
     }
 
     return true;
@@ -142,6 +163,7 @@ bool ShaderDiskCacheEntry::Save(FileUtil::IOFile& file) const {
         file.WriteObject(graphics_info) != 1 || file.WriteObject(compute_info) != 1 ||
         file.WriteObject(static_cast<u32>(keys.size())) != 1 ||
         file.WriteObject(static_cast<u32>(bound_samplers.size())) != 1 ||
+        file.WriteObject(static_cast<u32>(separate_samplers.size())) != 1 ||
         file.WriteObject(static_cast<u32>(bindless_samplers.size())) != 1) {
         return false;
     }
@@ -152,22 +174,34 @@ bool ShaderDiskCacheEntry::Save(FileUtil::IOFile& file) const {
         flat_keys.push_back(ConstBufferKey{address.first, address.second, value});
     }
 
-    std::vector<BoundSamplerKey> flat_bound_samplers;
+    std::vector<BoundSamplerEntry> flat_bound_samplers;
     flat_bound_samplers.reserve(bound_samplers.size());
     for (const auto& [address, sampler] : bound_samplers) {
-        flat_bound_samplers.push_back(BoundSamplerKey{address, sampler});
+        flat_bound_samplers.push_back(BoundSamplerEntry{address, sampler});
     }
 
-    std::vector<BindlessSamplerKey> flat_bindless_samplers;
+    std::vector<SeparateSamplerEntry> flat_separate_samplers;
+    flat_separate_samplers.reserve(separate_samplers.size());
+    for (const auto& [key, sampler] : separate_samplers) {
+        SeparateSamplerEntry entry;
+        std::tie(entry.cbuf1, entry.cbuf2) = key.buffers;
+        std::tie(entry.offset1, entry.offset2) = key.offsets;
+        entry.sampler = sampler;
+        flat_separate_samplers.push_back(entry);
+    }
+
+    std::vector<BindlessSamplerEntry> flat_bindless_samplers;
     flat_bindless_samplers.reserve(bindless_samplers.size());
     for (const auto& [address, sampler] : bindless_samplers) {
         flat_bindless_samplers.push_back(
-            BindlessSamplerKey{address.first, address.second, sampler});
+            BindlessSamplerEntry{address.first, address.second, sampler});
     }
 
     return file.WriteArray(flat_keys.data(), flat_keys.size()) == flat_keys.size() &&
            file.WriteArray(flat_bound_samplers.data(), flat_bound_samplers.size()) ==
                flat_bound_samplers.size() &&
+           file.WriteArray(flat_separate_samplers.data(), flat_separate_samplers.size()) ==
+               flat_separate_samplers.size() &&
            file.WriteArray(flat_bindless_samplers.data(), flat_bindless_samplers.size()) ==
                flat_bindless_samplers.size();
 }

src/video_core/renderer_opengl/gl_shader_disk_cache.h

@@ -57,6 +57,7 @@ struct ShaderDiskCacheEntry {
     VideoCommon::Shader::ComputeInfo compute_info;
     VideoCommon::Shader::KeyMap keys;
     VideoCommon::Shader::BoundSamplerMap bound_samplers;
+    VideoCommon::Shader::SeparateSamplerMap separate_samplers;
     VideoCommon::Shader::BindlessSamplerMap bindless_samplers;
 };
 

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -118,6 +118,17 @@ template <typename Engine, typename Entry>
 Tegra::Texture::FullTextureInfo GetTextureInfo(const Engine& engine, const Entry& entry,
                                                std::size_t stage, std::size_t index = 0) {
     const auto stage_type = static_cast<Tegra::Engines::ShaderType>(stage);
+    if constexpr (std::is_same_v<Entry, SamplerEntry>) {
+        if (entry.is_separated) {
+            const u32 buffer_1 = entry.buffer;
+            const u32 buffer_2 = entry.secondary_buffer;
+            const u32 offset_1 = entry.offset;
+            const u32 offset_2 = entry.secondary_offset;
+            const u32 handle_1 = engine.AccessConstBuffer32(stage_type, buffer_1, offset_1);
+            const u32 handle_2 = engine.AccessConstBuffer32(stage_type, buffer_2, offset_2);
+            return engine.GetTextureInfo(handle_1 | handle_2);
+        }
+    }
     if (entry.is_bindless) {
         const auto tex_handle = engine.AccessConstBuffer32(stage_type, entry.buffer, entry.offset);
         return engine.GetTextureInfo(tex_handle);

src/video_core/shader/decode/texture.cpp

@@ -357,13 +357,11 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
     return pc;
 }
 
-ShaderIR::SamplerInfo ShaderIR::GetSamplerInfo(SamplerInfo info, u32 offset,
+ShaderIR::SamplerInfo ShaderIR::GetSamplerInfo(
-                                               std::optional<u32> buffer) {
+    SamplerInfo info, std::optional<Tegra::Engines::SamplerDescriptor> sampler) {
     if (info.IsComplete()) {
         return info;
     }
-    const auto sampler = buffer ? registry.ObtainBindlessSampler(*buffer, offset)
-                                : registry.ObtainBoundSampler(offset);
     if (!sampler) {
         LOG_WARNING(HW_GPU, "Unknown sampler info");
         info.type = info.type.value_or(Tegra::Shader::TextureType::Texture2D);
@@ -381,8 +379,8 @@ ShaderIR::SamplerInfo ShaderIR::GetSamplerInfo(SamplerInfo info, u32 offset,
 
 std::optional<Sampler> ShaderIR::GetSampler(Tegra::Shader::Sampler sampler,
                                             SamplerInfo sampler_info) {
-    const auto offset = static_cast<u32>(sampler.index.Value());
+    const u32 offset = static_cast<u32>(sampler.index.Value());
-    const auto info = GetSamplerInfo(sampler_info, offset);
+    const auto info = GetSamplerInfo(sampler_info, registry.ObtainBoundSampler(offset));
 
     // If this sampler has already been used, return the existing mapping.
     const auto it = std::find_if(used_samplers.begin(), used_samplers.end(),
@@ -404,20 +402,19 @@ std::optional<Sampler> ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg,
     const Node sampler_register = GetRegister(reg);
     const auto [base_node, tracked_sampler_info] =
         TrackBindlessSampler(sampler_register, global_code, static_cast<s64>(global_code.size()));
-    ASSERT(base_node != nullptr);
+    if (!base_node) {
-    if (base_node == nullptr) {
+        UNREACHABLE();
         return std::nullopt;
     }
 
-    if (const auto bindless_sampler_info =
+    if (const auto sampler_info = std::get_if<BindlessSamplerNode>(&*tracked_sampler_info)) {
-            std::get_if<BindlessSamplerNode>(&*tracked_sampler_info)) {
+        const u32 buffer = sampler_info->index;
-        const u32 buffer = bindless_sampler_info->GetIndex();
+        const u32 offset = sampler_info->offset;
-        const u32 offset = bindless_sampler_info->GetOffset();
+        info = GetSamplerInfo(info, registry.ObtainBindlessSampler(buffer, offset));
-        info = GetSamplerInfo(info, offset, buffer);
 
         // If this sampler has already been used, return the existing mapping.
         const auto it = std::find_if(used_samplers.begin(), used_samplers.end(),
-                                     [buffer = buffer, offset = offset](const Sampler& entry) {
+                                     [buffer, offset](const Sampler& entry) {
                                          return entry.buffer == buffer && entry.offset == offset;
                                      });
         if (it != used_samplers.end()) {
@@ -431,10 +428,32 @@ std::optional<Sampler> ShaderIR::GetBindlessSampler(Tegra::Shader::Register reg,
         return used_samplers.emplace_back(next_index, offset, buffer, *info.type, *info.is_array,
                                           *info.is_shadow, *info.is_buffer, false);
     }
-    if (const auto array_sampler_info = std::get_if<ArraySamplerNode>(&*tracked_sampler_info)) {
+    if (const auto sampler_info = std::get_if<SeparateSamplerNode>(&*tracked_sampler_info)) {
-        const u32 base_offset = array_sampler_info->GetBaseOffset() / 4;
+        const std::pair indices = sampler_info->indices;
-        index_var = GetCustomVariable(array_sampler_info->GetIndexVar());
+        const std::pair offsets = sampler_info->offsets;
-        info = GetSamplerInfo(info, base_offset);
+        info = GetSamplerInfo(info, registry.ObtainSeparateSampler(indices, offsets));
+
+        // Try to use an already created sampler if it exists
+        const auto it = std::find_if(
+            used_samplers.begin(), used_samplers.end(), [indices, offsets](const Sampler& entry) {
+                return offsets == std::pair{entry.offset, entry.secondary_offset} &&
+                       indices == std::pair{entry.buffer, entry.secondary_buffer};
+            });
+        if (it != used_samplers.end()) {
+            ASSERT(it->is_separated && it->type == info.type && it->is_array == info.is_array &&
+                   it->is_shadow == info.is_shadow && it->is_buffer == info.is_buffer);
+            return *it;
+        }
+
+        // Otherwise create a new mapping for this sampler
+        const u32 next_index = static_cast<u32>(used_samplers.size());
+        return used_samplers.emplace_back(next_index, offsets, indices, *info.type, *info.is_array,
+                                          *info.is_shadow, *info.is_buffer);
+    }
+    if (const auto sampler_info = std::get_if<ArraySamplerNode>(&*tracked_sampler_info)) {
+        const u32 base_offset = sampler_info->base_offset / 4;
+        index_var = GetCustomVariable(sampler_info->bindless_var);
+        info = GetSamplerInfo(info, registry.ObtainBoundSampler(base_offset));
 
         // If this sampler has already been used, return the existing mapping.
         const auto it = std::find_if(

src/video_core/shader/node.h

@@ -275,10 +275,11 @@ using Node = std::shared_ptr<NodeData>;
 using Node4 = std::array<Node, 4>;
 using NodeBlock = std::vector<Node>;
 
-class BindlessSamplerNode;
+struct ArraySamplerNode;
-class ArraySamplerNode;
+struct BindlessSamplerNode;
+struct SeparateSamplerNode;
 
-using TrackSamplerData = std::variant<BindlessSamplerNode, ArraySamplerNode>;
+using TrackSamplerData = std::variant<BindlessSamplerNode, SeparateSamplerNode, ArraySamplerNode>;
 using TrackSampler = std::shared_ptr<TrackSamplerData>;
 
 struct Sampler {
@@ -288,6 +289,14 @@ struct Sampler {
         : index{index}, offset{offset}, type{type}, is_array{is_array}, is_shadow{is_shadow},
           is_buffer{is_buffer}, is_indexed{is_indexed} {}
 
+    /// Separate sampler constructor
+    constexpr explicit Sampler(u32 index, std::pair<u32, u32> offsets, std::pair<u32, u32> buffers,
+                               Tegra::Shader::TextureType type, bool is_array, bool is_shadow,
+                               bool is_buffer)
+        : index{index}, offset{offsets.first}, secondary_offset{offsets.second},
+          buffer{buffers.first}, secondary_buffer{buffers.second}, type{type}, is_array{is_array},
+          is_shadow{is_shadow}, is_buffer{is_buffer}, is_separated{true} {}
+
     /// Bindless samplers constructor
     constexpr explicit Sampler(u32 index, u32 offset, u32 buffer, Tegra::Shader::TextureType type,
                                bool is_array, bool is_shadow, bool is_buffer, bool is_indexed)
@@ -296,7 +305,9 @@ struct Sampler {
 
     u32 index = 0;            ///< Emulated index given for the this sampler.
     u32 offset = 0;           ///< Offset in the const buffer from where the sampler is being read.
-    u32 buffer = 0; ///< Buffer where the bindless sampler is being read (unused on bound samplers).
+    u32 secondary_offset = 0; ///< Secondary offset in the const buffer.
+    u32 buffer = 0;           ///< Buffer where the bindless sampler is read.
+    u32 secondary_buffer = 0; ///< Secondary buffer where the bindless sampler is read.
     u32 size = 1;             ///< Size of the sampler.
 
     Tegra::Shader::TextureType type{}; ///< The type used to sample this texture (Texture2D, etc)
@@ -305,46 +316,24 @@ struct Sampler {
     bool is_buffer = false;    ///< Whether the texture is a texture buffer without sampler.
     bool is_bindless = false;  ///< Whether this sampler belongs to a bindless texture or not.
     bool is_indexed = false;   ///< Whether this sampler is an indexed array of textures.
+    bool is_separated = false; ///< Whether the image and sampler is separated or not.
 };
 
 /// Represents a tracked bindless sampler into a direct const buffer
-class ArraySamplerNode final {
+struct ArraySamplerNode {
-public:
-    explicit ArraySamplerNode(u32 index, u32 base_offset, u32 bindless_var)
-        : index{index}, base_offset{base_offset}, bindless_var{bindless_var} {}
-
-    constexpr u32 GetIndex() const {
-        return index;
-    }
-
-    constexpr u32 GetBaseOffset() const {
-        return base_offset;
-    }
-
-    constexpr u32 GetIndexVar() const {
-        return bindless_var;
-    }
-
-private:
     u32 index;
     u32 base_offset;
     u32 bindless_var;
 };
 
+/// Represents a tracked separate sampler image pair that was folded statically
+struct SeparateSamplerNode {
+    std::pair<u32, u32> indices;
+    std::pair<u32, u32> offsets;
+};
+
 /// Represents a tracked bindless sampler into a direct const buffer
-class BindlessSamplerNode final {
+struct BindlessSamplerNode {
-public:
-    explicit BindlessSamplerNode(u32 index, u32 offset) : index{index}, offset{offset} {}
-
-    constexpr u32 GetIndex() const {
-        return index;
-    }
-
-    constexpr u32 GetOffset() const {
-        return offset;
-    }
-
-private:
     u32 index;
     u32 offset;
 };

src/video_core/shader/node_helper.h

@@ -48,7 +48,7 @@ Node MakeNode(Args&&... args) {
 template <typename T, typename... Args>
 TrackSampler MakeTrackSampler(Args&&... args) {
     static_assert(std::is_convertible_v<T, TrackSamplerData>);
-    return std::make_shared<TrackSamplerData>(T(std::forward<Args>(args)...));
+    return std::make_shared<TrackSamplerData>(T{std::forward<Args>(args)...});
 }
 
 template <typename... Args>

src/video_core/shader/registry.cpp

@@ -93,6 +93,26 @@ std::optional<SamplerDescriptor> Registry::ObtainBoundSampler(u32 offset) {
     return value;
 }
 
+std::optional<Tegra::Engines::SamplerDescriptor> Registry::ObtainSeparateSampler(
+    std::pair<u32, u32> buffers, std::pair<u32, u32> offsets) {
+    SeparateSamplerKey key;
+    key.buffers = buffers;
+    key.offsets = offsets;
+    const auto iter = separate_samplers.find(key);
+    if (iter != separate_samplers.end()) {
+        return iter->second;
+    }
+    if (!engine) {
+        return std::nullopt;
+    }
+
+    const u32 handle_1 = engine->AccessConstBuffer32(stage, key.buffers.first, key.offsets.first);
+    const u32 handle_2 = engine->AccessConstBuffer32(stage, key.buffers.second, key.offsets.second);
+    const SamplerDescriptor value = engine->AccessSampler(handle_1 | handle_2);
+    separate_samplers.emplace(key, value);
+    return value;
+}
+
 std::optional<Tegra::Engines::SamplerDescriptor> Registry::ObtainBindlessSampler(u32 buffer,
                                                                                  u32 offset) {
     const std::pair key = {buffer, offset};

src/video_core/shader/registry.h

@@ -19,8 +19,39 @@
 
 namespace VideoCommon::Shader {
 
+struct SeparateSamplerKey {
+    std::pair<u32, u32> buffers;
+    std::pair<u32, u32> offsets;
+};
+
+} // namespace VideoCommon::Shader
+
+namespace std {
+
+template <>
+struct hash<VideoCommon::Shader::SeparateSamplerKey> {
+    std::size_t operator()(const VideoCommon::Shader::SeparateSamplerKey& key) const noexcept {
+        return std::hash<u32>{}(key.buffers.first ^ key.buffers.second ^ key.offsets.first ^
+                                key.offsets.second);
+    }
+};
+
+template <>
+struct equal_to<VideoCommon::Shader::SeparateSamplerKey> {
+    bool operator()(const VideoCommon::Shader::SeparateSamplerKey& lhs,
+                    const VideoCommon::Shader::SeparateSamplerKey& rhs) const noexcept {
+        return lhs.buffers == rhs.buffers && lhs.offsets == rhs.offsets;
+    }
+};
+
+} // namespace std
+
+namespace VideoCommon::Shader {
+
 using KeyMap = std::unordered_map<std::pair<u32, u32>, u32, Common::PairHash>;
 using BoundSamplerMap = std::unordered_map<u32, Tegra::Engines::SamplerDescriptor>;
+using SeparateSamplerMap =
+    std::unordered_map<SeparateSamplerKey, Tegra::Engines::SamplerDescriptor>;
 using BindlessSamplerMap =
     std::unordered_map<std::pair<u32, u32>, Tegra::Engines::SamplerDescriptor, Common::PairHash>;
 
@@ -73,6 +104,9 @@ public:
 
     std::optional<Tegra::Engines::SamplerDescriptor> ObtainBoundSampler(u32 offset);
 
+    std::optional<Tegra::Engines::SamplerDescriptor> ObtainSeparateSampler(
+        std::pair<u32, u32> buffers, std::pair<u32, u32> offsets);
+
     std::optional<Tegra::Engines::SamplerDescriptor> ObtainBindlessSampler(u32 buffer, u32 offset);
 
     /// Inserts a key.
@@ -128,6 +162,7 @@ private:
     Tegra::Engines::ConstBufferEngineInterface* engine = nullptr;
     KeyMap keys;
     BoundSamplerMap bound_samplers;
+    SeparateSamplerMap separate_samplers;
     BindlessSamplerMap bindless_samplers;
     u32 bound_buffer;
     GraphicsInfo graphics_info;

src/video_core/shader/shader_ir.h

@@ -330,8 +330,8 @@ private:
     OperationCode GetPredicateCombiner(Tegra::Shader::PredOperation operation);
 
     /// Queries the missing sampler info from the execution context.
-    SamplerInfo GetSamplerInfo(SamplerInfo info, u32 offset,
+    SamplerInfo GetSamplerInfo(SamplerInfo info,
-                               std::optional<u32> buffer = std::nullopt);
+                               std::optional<Tegra::Engines::SamplerDescriptor> sampler);
 
     /// Accesses a texture sampler.
     std::optional<Sampler> GetSampler(Tegra::Shader::Sampler sampler, SamplerInfo info);
@@ -409,7 +409,13 @@ private:
 
     std::tuple<Node, u32, u32> TrackCbuf(Node tracked, const NodeBlock& code, s64 cursor) const;
 
-    std::tuple<Node, TrackSampler> TrackBindlessSampler(Node tracked, const NodeBlock& code,
+    std::pair<Node, TrackSampler> TrackBindlessSampler(Node tracked, const NodeBlock& code,
+                                                       s64 cursor);
+
+    std::pair<Node, TrackSampler> HandleBindlessIndirectRead(const CbufNode& cbuf,
+                                                             const OperationNode& operation,
+                                                             Node gpr, Node base_offset,
+                                                             Node tracked, const NodeBlock& code,
                                                              s64 cursor);
 
     std::optional<u32> TrackImmediate(Node tracked, const NodeBlock& code, s64 cursor) const;

src/video_core/shader/track.cpp

@@ -14,6 +14,7 @@
 namespace VideoCommon::Shader {
 
 namespace {
+
 std::pair<Node, s64> FindOperation(const NodeBlock& code, s64 cursor,
                                    OperationCode operation_code) {
     for (; cursor >= 0; --cursor) {
@@ -63,7 +64,8 @@ bool AmendNodeCv(std::size_t amend_index, Node node) {
     if (const auto operation = std::get_if<OperationNode>(&*node)) {
         operation->SetAmendIndex(amend_index);
         return true;
-    } else if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
+    }
+    if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
         conditional->SetAmendIndex(amend_index);
         return true;
     }
@@ -72,40 +74,27 @@ bool AmendNodeCv(std::size_t amend_index, Node node) {
 
 } // Anonymous namespace
 
-std::tuple<Node, TrackSampler> ShaderIR::TrackBindlessSampler(Node tracked, const NodeBlock& code,
+std::pair<Node, TrackSampler> ShaderIR::TrackBindlessSampler(Node tracked, const NodeBlock& code,
                                                              s64 cursor) {
     if (const auto cbuf = std::get_if<CbufNode>(&*tracked)) {
+        const u32 cbuf_index = cbuf->GetIndex();
+
         // Constant buffer found, test if it's an immediate
         const auto& offset = cbuf->GetOffset();
         if (const auto immediate = std::get_if<ImmediateNode>(&*offset)) {
-            auto track =
+            auto track = MakeTrackSampler<BindlessSamplerNode>(cbuf_index, immediate->GetValue());
-                MakeTrackSampler<BindlessSamplerNode>(cbuf->GetIndex(), immediate->GetValue());
             return {tracked, track};
         }
         if (const auto operation = std::get_if<OperationNode>(&*offset)) {
             const u32 bound_buffer = registry.GetBoundBuffer();
-            if (bound_buffer != cbuf->GetIndex()) {
+            if (bound_buffer != cbuf_index) {
-                return {};
-            }
-            const auto pair = DecoupleIndirectRead(*operation);
-            if (!pair) {
                 return {};
             }
+            if (const std::optional pair = DecoupleIndirectRead(*operation)) {
                 auto [gpr, base_offset] = *pair;
-            const auto offset_inm = std::get_if<ImmediateNode>(&*base_offset);
+                return HandleBindlessIndirectRead(*cbuf, *operation, gpr, base_offset, tracked,
-            const auto& gpu_driver = registry.AccessGuestDriverProfile();
+                                                  code, cursor);
-            const u32 bindless_cv = NewCustomVariable();
+            }
-            Node op =
-                Operation(OperationCode::UDiv, gpr, Immediate(gpu_driver.GetTextureHandlerSize()));
-
-            const Node cv_node = GetCustomVariable(bindless_cv);
-            Node amend_op = Operation(OperationCode::Assign, cv_node, std::move(op));
-            const std::size_t amend_index = DeclareAmend(std::move(amend_op));
-            AmendNodeCv(amend_index, code[cursor]);
-            // TODO Implement Bindless Index custom variable
-            auto track = MakeTrackSampler<ArraySamplerNode>(cbuf->GetIndex(),
-                                                            offset_inm->GetValue(), bindless_cv);
-            return {tracked, track};
         }
         return {};
     }
@@ -122,10 +111,23 @@ std::tuple<Node, TrackSampler> ShaderIR::TrackBindlessSampler(Node tracked, cons
         return TrackBindlessSampler(source, code, new_cursor);
     }
     if (const auto operation = std::get_if<OperationNode>(&*tracked)) {
-        for (std::size_t i = operation->GetOperandsCount(); i > 0; --i) {
+        const OperationNode& op = *operation;
-            if (auto found = TrackBindlessSampler((*operation)[i - 1], code, cursor);
+
-                std::get<0>(found)) {
+        const OperationCode opcode = operation->GetCode();
-                // Cbuf found in operand.
+        if (opcode == OperationCode::IBitwiseOr || opcode == OperationCode::UBitwiseOr) {
+            ASSERT(op.GetOperandsCount() == 2);
+            auto [node_a, index_a, offset_a] = TrackCbuf(op[0], code, cursor);
+            auto [node_b, index_b, offset_b] = TrackCbuf(op[1], code, cursor);
+            if (node_a && node_b) {
+                auto track = MakeTrackSampler<SeparateSamplerNode>(std::pair{index_a, index_b},
+                                                                   std::pair{offset_a, offset_b});
+                return {tracked, std::move(track)};
+            }
+        }
+        std::size_t i = op.GetOperandsCount();
+        while (i--) {
+            if (auto found = TrackBindlessSampler(op[i - 1], code, cursor); std::get<0>(found)) {
+                // Constant buffer found in operand.
                 return found;
             }
         }
@@ -139,6 +141,26 @@ std::tuple<Node, TrackSampler> ShaderIR::TrackBindlessSampler(Node tracked, cons
     return {};
 }
 
+std::pair<Node, TrackSampler> ShaderIR::HandleBindlessIndirectRead(
+    const CbufNode& cbuf, const OperationNode& operation, Node gpr, Node base_offset, Node tracked,
+    const NodeBlock& code, s64 cursor) {
+    const auto offset_imm = std::get<ImmediateNode>(*base_offset);
+    const auto& gpu_driver = registry.AccessGuestDriverProfile();
+    const u32 bindless_cv = NewCustomVariable();
+    const u32 texture_handler_size = gpu_driver.GetTextureHandlerSize();
+    Node op = Operation(OperationCode::UDiv, gpr, Immediate(texture_handler_size));
+
+    Node cv_node = GetCustomVariable(bindless_cv);
+    Node amend_op = Operation(OperationCode::Assign, std::move(cv_node), std::move(op));
+    const std::size_t amend_index = DeclareAmend(std::move(amend_op));
+    AmendNodeCv(amend_index, code[cursor]);
+
+    // TODO: Implement bindless index custom variable
+    auto track =
+        MakeTrackSampler<ArraySamplerNode>(cbuf.GetIndex(), offset_imm.GetValue(), bindless_cv);
+    return {tracked, track};
+}
+
 std::tuple<Node, u32, u32> ShaderIR::TrackCbuf(Node tracked, const NodeBlock& code,
                                                s64 cursor) const {
     if (const auto cbuf = std::get_if<CbufNode>(&*tracked)) {