Shader_IR: allow lookup of texture samplers within the shader_ir for instructions that don't provide it

src/video_core/engines/const_buffer_engine_interface.h

@@ -4,7 +4,10 @@
 
 #pragma once
 
+#include "common/bit_field.h"
 #include "common/common_types.h"
+#include "video_core/engines/shader_bytecode.h"
+#include "video_core/textures/texture.h"
 
 namespace Tegra::Engines {
 
@@ -17,10 +20,100 @@ enum class ShaderType : u32 {
     Compute = 5,
 };
 
+struct SamplerDescriptor {
+    union {
+        BitField<0, 20, Tegra::Shader::TextureType> texture_type;
+        BitField<20, 1, u32> is_array;
+        BitField<21, 1, u32> is_buffer;
+        BitField<22, 1, u32> is_shadow;
+        u32 raw{};
+    };
+
+    static SamplerDescriptor FromTicTexture(Tegra::Texture::TextureType tic_texture_type) {
+        SamplerDescriptor result{};
+        switch (tic_texture_type) {
+        case Tegra::Texture::TextureType::Texture1D: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture1D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture2D: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture2D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture3D: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture3D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::TextureCubemap: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::TextureCube);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture1DArray: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture1D);
+            result.is_array.Assign(1);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture2DArray: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture2D);
+            result.is_array.Assign(1);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture1DBuffer: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture1D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(1);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::Texture2DNoMipmap: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture2D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        case Tegra::Texture::TextureType::TextureCubeArray: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::TextureCube);
+            result.is_array.Assign(1);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        default: {
+            result.texture_type.Assign(Tegra::Shader::TextureType::Texture2D);
+            result.is_array.Assign(0);
+            result.is_buffer.Assign(0);
+            result.is_shadow.Assign(0);
+            return result;
+        }
+        }
+    }
+};
+
 class ConstBufferEngineInterface {
 public:
     virtual ~ConstBufferEngineInterface() {}
     virtual u32 AccessConstBuffer32(ShaderType stage, u64 const_buffer, u64 offset) const = 0;
+    virtual SamplerDescriptor AccessBoundSampler(ShaderType stage, u64 offset) const = 0;
+    virtual SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
+                                                    u64 offset) const = 0;
+    virtual u32 GetBoundBuffer() const = 0;
 };
 
-}
+} // namespace Tegra::Engines

src/video_core/engines/kepler_compute.cpp

@@ -78,6 +78,24 @@ u32 KeplerCompute::AccessConstBuffer32(ShaderType stage, u64 const_buffer, u64 o
     return result;
 }
 
+SamplerDescriptor KeplerCompute::AccessBoundSampler(ShaderType stage, u64 offset) const {
+    return AccessBindlessSampler(stage, regs.tex_cb_index, offset * sizeof(Texture::TextureHandle));
+}
+
+SamplerDescriptor KeplerCompute::AccessBindlessSampler(ShaderType stage, u64 const_buffer,
+                                                       u64 offset) const {
+    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;
+
+    const Texture::TextureHandle tex_handle{memory_manager.Read<u32>(tex_info_address)};
+    const Texture::FullTextureInfo tex_info = GetTextureInfo(tex_handle, offset);
+    SamplerDescriptor result = SamplerDescriptor::FromTicTexture(tex_info.tic.texture_type.Value());
+    result.is_shadow.Assign(tex_info.tsc.depth_compare_enabled.Value());
+    return result;
+}
+
 void KeplerCompute::ProcessLaunch() {
     const GPUVAddr launch_desc_loc = regs.launch_desc_loc.Address();
     memory_manager.ReadBlockUnsafe(launch_desc_loc, &launch_description,

src/video_core/engines/kepler_compute.h

@@ -10,8 +10,8 @@
 #include "common/bit_field.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
-#include "video_core/engines/engine_upload.h"
 #include "video_core/engines/const_buffer_engine_interface.h"
+#include "video_core/engines/engine_upload.h"
 #include "video_core/gpu.h"
 #include "video_core/textures/texture.h"
 
@@ -204,6 +204,15 @@ public:
 
     u32 AccessConstBuffer32(ShaderType stage, u64 const_buffer, u64 offset) const override;
 
+    SamplerDescriptor AccessBoundSampler(ShaderType stage, u64 offset) const override;
+
+    SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
+                                            u64 offset) const override;
+
+    u32 GetBoundBuffer() const override {
+        return regs.tex_cb_index;
+    }
+
 private:
     Core::System& system;
     VideoCore::RasterizerInterface& rasterizer;

src/video_core/engines/maxwell_3d.cpp

@@ -856,4 +856,22 @@ u32 Maxwell3D::AccessConstBuffer32(ShaderType stage, u64 const_buffer, u64 offse
     return result;
 }
 
+SamplerDescriptor Maxwell3D::AccessBoundSampler(ShaderType stage, u64 offset) const {
+    return AccessBindlessSampler(stage, regs.tex_cb_index, offset * sizeof(Texture::TextureHandle));
+}
+
+SamplerDescriptor Maxwell3D::AccessBindlessSampler(ShaderType stage, u64 const_buffer,
+                                                   u64 offset) const {
+    ASSERT(stage != ShaderType::Compute);
+    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;
+
+    const Texture::TextureHandle tex_handle{memory_manager.Read<u32>(tex_info_address)};
+    const Texture::FullTextureInfo tex_info = GetTextureInfo(tex_handle, offset);
+    SamplerDescriptor result = SamplerDescriptor::FromTicTexture(tex_info.tic.texture_type.Value());
+    result.is_shadow.Assign(tex_info.tsc.depth_compare_enabled.Value());
+    return result;
+}
+
 } // namespace Tegra::Engines

src/video_core/engines/maxwell_3d.h

@@ -15,8 +15,8 @@
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/math_util.h"
-#include "video_core/engines/const_buffer_info.h"
 #include "video_core/engines/const_buffer_engine_interface.h"
+#include "video_core/engines/const_buffer_info.h"
 #include "video_core/engines/engine_upload.h"
 #include "video_core/gpu.h"
 #include "video_core/macro_interpreter.h"
@@ -1260,6 +1260,15 @@ public:
 
     u32 AccessConstBuffer32(ShaderType stage, u64 const_buffer, u64 offset) const override;
 
+    SamplerDescriptor AccessBoundSampler(ShaderType stage, u64 offset) const override;
+
+    SamplerDescriptor AccessBindlessSampler(ShaderType stage, u64 const_buffer,
+                                            u64 offset) const override;
+
+    u32 GetBoundBuffer() const override {
+        return regs.tex_cb_index;
+    }
+
     /// Memory for macro code - it's undetermined how big this is, however 1MB is much larger than
     /// we've seen used.
     using MacroMemory = std::array<u32, 0x40000>;

src/video_core/shader/const_buffer_locker.cpp

@@ -27,45 +27,123 @@ void ConstBufferLocker::SetEngine(Tegra::Engines::ConstBufferEngineInterface* en
 }
 
 std::optional<u32> ConstBufferLocker::ObtainKey(u32 buffer, u32 offset) {
+    if (!keys) {
+        keys = std::make_shared<KeyMap>();
+    }
+    auto& key_map = *keys;
     const std::pair<u32, u32> key = {buffer, offset};
-    const auto iter = keys.find(key);
-    if (iter != keys.end()) {
+    const auto iter = key_map.find(key);
+    if (iter != key_map.end()) {
         return {iter->second};
     }
     if (!IsEngineSet()) {
         return {};
     }
     const u32 value = engine->AccessConstBuffer32(shader_stage, buffer, offset);
-    keys.emplace(key, value);
+    key_map.emplace(key, value);
+    return {value};
+}
+
+std::optional<Tegra::Engines::SamplerDescriptor> ConstBufferLocker::ObtainBoundSampler(u32 offset) {
+    if (!bound_samplers) {
+        bound_samplers = std::make_shared<BoundSamplerMap>();
+    }
+    auto& key_map = *bound_samplers;
+    const u32 key = offset;
+    const auto iter = key_map.find(key);
+    if (iter != key_map.end()) {
+        return {iter->second};
+    }
+    if (!IsEngineSet()) {
+        return {};
+    }
+    const Tegra::Engines::SamplerDescriptor value =
+        engine->AccessBoundSampler(shader_stage, offset);
+    key_map.emplace(key, value);
+    return {value};
+}
+
+std::optional<Tegra::Engines::SamplerDescriptor> ConstBufferLocker::ObtainBindlessSampler(
+    u32 buffer, u32 offset) {
+    if (!bindless_samplers) {
+        bindless_samplers = std::make_shared<BindlessSamplerMap>();
+    }
+    auto& key_map = *bindless_samplers;
+    const std::pair<u32, u32> key = {buffer, offset};
+    const auto iter = key_map.find(key);
+    if (iter != key_map.end()) {
+        return {iter->second};
+    }
+    if (!IsEngineSet()) {
+        return {};
+    }
+    const Tegra::Engines::SamplerDescriptor value =
+        engine->AccessBindlessSampler(shader_stage, buffer, offset);
+    key_map.emplace(key, value);
     return {value};
 }
 
 void ConstBufferLocker::InsertKey(u32 buffer, u32 offset, u32 value) {
+    if (!keys) {
+        keys = std::make_shared<KeyMap>();
+    }
     const std::pair<u32, u32> key = {buffer, offset};
-    keys[key] = value;
+    (*keys)[key] = value;
 }
 
-u32 ConstBufferLocker::NumKeys() const {
-    return keys.size();
+void ConstBufferLocker::InsertBoundSampler(u32 offset, Tegra::Engines::SamplerDescriptor sampler) {
+    if (!bound_samplers) {
+        bound_samplers = std::make_shared<BoundSamplerMap>();
+    }
+    (*bound_samplers)[offset] = sampler;
 }
 
-const std::unordered_map<std::pair<u32, u32>, u32, Common::PairHash>&
-ConstBufferLocker::AccessKeys() const {
-    return keys;
+void ConstBufferLocker::InsertBindlessSampler(u32 buffer, u32 offset,
+                                              Tegra::Engines::SamplerDescriptor sampler) {
+    if (!bindless_samplers) {
+        bindless_samplers = std::make_shared<BindlessSamplerMap>();
+    }
+    const std::pair<u32, u32> key = {buffer, offset};
+    (*bindless_samplers)[key] = sampler;
 }
 
-bool ConstBufferLocker::AreKeysConsistant() const {
+bool ConstBufferLocker::IsConsistant() const {
     if (!IsEngineSet()) {
         return false;
     }
-    for (const auto& key_val : keys) {
+    if (keys) {
+        for (const auto& key_val : *keys) {
             const std::pair<u32, u32> key = key_val.first;
             const u32 value = key_val.second;
-        const u32 other_value = engine->AccessConstBuffer32(shader_stage, key.first, key.second);
+            const u32 other_value =
+                engine->AccessConstBuffer32(shader_stage, key.first, key.second);
             if (other_value != value) {
                 return false;
             }
         }
+    }
+    if (bound_samplers) {
+        for (const auto& sampler_val : *bound_samplers) {
+            const u32 key = sampler_val.first;
+            const Tegra::Engines::SamplerDescriptor value = sampler_val.second;
+            const Tegra::Engines::SamplerDescriptor other_value =
+                engine->AccessBoundSampler(shader_stage, key);
+            if (other_value.raw != value.raw) {
+                return false;
+            }
+        }
+    }
+    if (bindless_samplers) {
+        for (const auto& sampler_val : *bindless_samplers) {
+            const std::pair<u32, u32> key = sampler_val.first;
+            const Tegra::Engines::SamplerDescriptor value = sampler_val.second;
+            const Tegra::Engines::SamplerDescriptor other_value =
+                engine->AccessBindlessSampler(shader_stage, key.first, key.second);
+            if (other_value.raw != value.raw) {
+                return false;
+            }
+        }
+    }
     return true;
 }
 

src/video_core/shader/const_buffer_locker.h

@@ -11,6 +11,11 @@
 
 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 BindlessSamplerMap =
+    std::unordered_map<std::pair<u32, u32>, Tegra::Engines::SamplerDescriptor, Common::PairHash>;
+
 class ConstBufferLocker {
 public:
     explicit ConstBufferLocker(Tegra::Engines::ShaderType shader_stage);
@@ -29,22 +34,67 @@ public:
     // registered value, if not it will obtain it from maxwell3d and register it.
     std::optional<u32> ObtainKey(u32 buffer, u32 offset);
 
+    std::optional<Tegra::Engines::SamplerDescriptor> ObtainBoundSampler(u32 offset);
+
+    std::optional<Tegra::Engines::SamplerDescriptor> ObtainBindlessSampler(u32 buffer, u32 offset);
+
     // Manually inserts a key.
     void InsertKey(u32 buffer, u32 offset, u32 value);
 
+    void InsertBoundSampler(u32 offset, Tegra::Engines::SamplerDescriptor sampler);
+
+    void InsertBindlessSampler(u32 buffer, u32 offset, Tegra::Engines::SamplerDescriptor sampler);
+
     // Retrieves the number of keys registered.
-    u32 NumKeys() const;
+    std::size_t NumKeys() const {
+        if (!keys) {
+            return 0;
+        }
+        return keys->size();
+    }
+
+    std::size_t NumBoundSamplers() const {
+        if (!bound_samplers) {
+            return 0;
+        }
+        return bound_samplers->size();
+    }
+
+    std::size_t NumBindlessSamplers() const {
+        if (!bindless_samplers) {
+            return 0;
+        }
+        return bindless_samplers->size();
+    }
 
     // Gives an accessor to the key's database.
-    const std::unordered_map<std::pair<u32, u32>, u32, Common::PairHash>& AccessKeys() const;
+    // Pre: NumKeys > 0
+    const KeyMap& AccessKeys() const {
+        return *keys;
+    }
 
-    // Checks keys against maxwell3d's current const buffers. Returns true if they
+    // Gives an accessor to the sampler's database.
+    // Pre: NumBindlessSamplers > 0
+    const BoundSamplerMap& AccessBoundSamplers() const {
+        return *bound_samplers;
+    }
+
+    // Gives an accessor to the sampler's database.
+    // Pre: NumBindlessSamplers > 0
+    const BindlessSamplerMap& AccessBindlessSamplers() const {
+        return *bindless_samplers;
+    }
+
+    // Checks keys & samplers against engine's current const buffers. Returns true if they
     // are the same value, false otherwise;
-    bool AreKeysConsistant() const;
+    bool IsConsistant() const;
 
 private:
     Tegra::Engines::ConstBufferEngineInterface* engine;
     Tegra::Engines::ShaderType shader_stage;
-    std::unordered_map<std::pair<u32, u32>, u32, Common::PairHash> keys{};
+    // All containers are lazy initialized as most shaders don't use them.
+    std::shared_ptr<KeyMap> keys{};
+    std::shared_ptr<BoundSamplerMap> bound_samplers{};
+    std::shared_ptr<BindlessSamplerMap> bindless_samplers{};
 };
 } // namespace VideoCommon::Shader

src/video_core/shader/decode/texture.cpp

@@ -141,7 +141,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
         const Node component = Immediate(static_cast<u32>(instr.tld4s.component));
 
         const auto& sampler =
-            GetSampler(instr.sampler, TextureType::Texture2D, false, depth_compare);
+            GetSampler(instr.sampler, {{TextureType::Texture2D, false, depth_compare}});
 
         Node4 values;
         for (u32 element = 0; element < values.size(); ++element) {
@@ -165,10 +165,7 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
         // Sadly, not all texture instructions specify the type of texture their sampler
         // uses. This must be fixed at a later instance.
         const auto& sampler =
-            is_bindless
-                ? GetBindlessSampler(instr.gpr8, Tegra::Shader::TextureType::Texture2D, false,
-                                     false)
-                : GetSampler(instr.sampler, Tegra::Shader::TextureType::Texture2D, false, false);
+            is_bindless ? GetBindlessSampler(instr.gpr8, {}) : GetSampler(instr.sampler, {});
 
         u32 indexer = 0;
         switch (instr.txq.query_type) {
@@ -207,9 +204,9 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
 
         auto texture_type = instr.tmml.texture_type.Value();
         const bool is_array = instr.tmml.array != 0;
-        const auto& sampler = is_bindless
-                                  ? GetBindlessSampler(instr.gpr20, texture_type, is_array, false)
-                                  : GetSampler(instr.sampler, texture_type, is_array, false);
+        const auto& sampler =
+            is_bindless ? GetBindlessSampler(instr.gpr20, {{texture_type, is_array, false}})
+                        : GetSampler(instr.sampler, {{texture_type, is_array, false}});
 
         std::vector<Node> coords;
 
@@ -285,10 +282,30 @@ u32 ShaderIR::DecodeTexture(NodeBlock& bb, u32 pc) {
     return pc;
 }
 
-const Sampler& ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler, TextureType type,
-                                    bool is_array, bool is_shadow) {
+const Sampler& ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler,
+                                    std::optional<SamplerInfo> sampler_info) {
     const auto offset = static_cast<std::size_t>(sampler.index.Value());
 
+    Tegra::Shader::TextureType type;
+    bool is_array;
+    bool is_shadow;
+    if (sampler_info) {
+        type = sampler_info->type;
+        is_array = sampler_info->is_array;
+        is_shadow = sampler_info->is_shadow;
+    } else {
+        auto sampler = locker.ObtainBoundSampler(offset);
+        if (sampler) {
+            type = sampler->texture_type.Value();
+            is_array = sampler->is_array.Value() != 0;
+            is_shadow = sampler->is_shadow.Value() != 0;
+        } else {
+            type = Tegra::Shader::TextureType::Texture2D;
+            is_array = false;
+            is_shadow = false;
+        }
+    }
+
     // If this sampler has already been used, return the existing mapping.
     const auto itr =
         std::find_if(used_samplers.begin(), used_samplers.end(),
@@ -305,13 +322,32 @@ const Sampler& ShaderIR::GetSampler(const Tegra::Shader::Sampler& sampler, Textu
     return *used_samplers.emplace(entry).first;
 }
 
-const Sampler& ShaderIR::GetBindlessSampler(const Tegra::Shader::Register& reg, TextureType type,
-                                            bool is_array, bool is_shadow) {
+const Sampler& ShaderIR::GetBindlessSampler(const Tegra::Shader::Register& reg,
+                                            std::optional<SamplerInfo> sampler_info) {
     const Node sampler_register = GetRegister(reg);
     const auto [base_sampler, cbuf_index, cbuf_offset] =
         TrackCbuf(sampler_register, global_code, static_cast<s64>(global_code.size()));
     ASSERT(base_sampler != nullptr);
     const auto cbuf_key = (static_cast<u64>(cbuf_index) << 32) | static_cast<u64>(cbuf_offset);
+    Tegra::Shader::TextureType type;
+    bool is_array;
+    bool is_shadow;
+    if (sampler_info) {
+        type = sampler_info->type;
+        is_array = sampler_info->is_array;
+        is_shadow = sampler_info->is_shadow;
+    } else {
+        auto sampler = locker.ObtainBindlessSampler(cbuf_index, cbuf_offset);
+        if (sampler) {
+            type = sampler->texture_type.Value();
+            is_array = sampler->is_array.Value() != 0;
+            is_shadow = sampler->is_shadow.Value() != 0;
+        } else {
+            type = Tegra::Shader::TextureType::Texture2D;
+            is_array = false;
+            is_shadow = false;
+        }
+    }
 
     // If this sampler has already been used, return the existing mapping.
     const auto itr =
@@ -411,9 +447,9 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
                              (texture_type == TextureType::TextureCube && is_array && is_shadow),
                          "This method is not supported.");
 
-    const auto& sampler = is_bindless
-                              ? GetBindlessSampler(*bindless_reg, texture_type, is_array, is_shadow)
-                              : GetSampler(instr.sampler, texture_type, is_array, is_shadow);
+    const auto& sampler =
+        is_bindless ? GetBindlessSampler(*bindless_reg, {{texture_type, is_array, is_shadow}})
+                    : GetSampler(instr.sampler, {{texture_type, is_array, is_shadow}});
 
     const bool lod_needed = process_mode == TextureProcessMode::LZ ||
                             process_mode == TextureProcessMode::LL ||
@@ -577,7 +613,7 @@ Node4 ShaderIR::GetTld4Code(Instruction instr, TextureType texture_type, bool de
         dc = GetRegister(parameter_register++);
     }
 
-    const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, depth_compare);
+    const auto& sampler = GetSampler(instr.sampler, {{texture_type, is_array, depth_compare}});
 
     Node4 values;
     for (u32 element = 0; element < values.size(); ++element) {
@@ -610,7 +646,7 @@ Node4 ShaderIR::GetTldCode(Tegra::Shader::Instruction instr) {
     // const Node aoffi_register{is_aoffi ? GetRegister(gpr20_cursor++) : nullptr};
     // const Node multisample{is_multisample ? GetRegister(gpr20_cursor++) : nullptr};
 
-    const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, false);
+    const auto& sampler = GetSampler(instr.sampler, {{texture_type, is_array, false}});
 
     Node4 values;
     for (u32 element = 0; element < values.size(); ++element) {
@@ -646,7 +682,7 @@ Node4 ShaderIR::GetTldsCode(Instruction instr, TextureType texture_type, bool is
     // When lod is used always is in gpr20
     const Node lod = lod_enabled ? GetRegister(instr.gpr20) : Immediate(0);
 
-    const auto& sampler = GetSampler(instr.sampler, texture_type, is_array, false);
+    const auto& sampler = GetSampler(instr.sampler, {{texture_type, is_array, false}});
 
     Node4 values;
     for (u32 element = 0; element < values.size(); ++element) {

src/video_core/shader/shader_ir.h

@@ -173,6 +173,13 @@ public:
 
 private:
     friend class ASTDecoder;
+
+    struct SamplerInfo {
+        Tegra::Shader::TextureType type;
+        bool is_array;
+        bool is_shadow;
+    };
+
     void Decode();
 
     NodeBlock DecodeRange(u32 begin, u32 end);
@@ -297,12 +304,11 @@ private:
 
     /// Accesses a texture sampler
     const Sampler& GetSampler(const Tegra::Shader::Sampler& sampler,
-                              Tegra::Shader::TextureType type, bool is_array, bool is_shadow);
+                              std::optional<SamplerInfo> sampler_info);
 
     // Accesses a texture sampler for a bindless texture.
     const Sampler& GetBindlessSampler(const Tegra::Shader::Register& reg,
-                                      Tegra::Shader::TextureType type, bool is_array,
-                                      bool is_shadow);
+                                      std::optional<SamplerInfo> sampler_info);
 
     /// Accesses an image.
     Image& GetImage(Tegra::Shader::Image image, Tegra::Shader::ImageType type);