2 files changed, 29 insertions, 0 deletions

diff --git a/src/video_core/shader/const_buffer_locker.cpp b/src/video_core/shader/const_buffer_locker.cpp
index a4a0319eb..0638be8cb 100644
--- a/src/video_core/shader/const_buffer_locker.cpp
+++ b/src/video_core/shader/const_buffer_locker.cpp
@@ -66,6 +66,18 @@ std::optional<Tegra::Engines::SamplerDescriptor> ConstBufferLocker::ObtainBindle
     return value;
 }
 
+std::optional<u32> ConstBufferLocker::ObtainBoundBuffer() {
+    if (bound_buffer_saved) {
+        return bound_buffer;
+    }
+    if (!engine) {
+        return std::nullopt;
+    }
+    bound_buffer_saved = true;
+    bound_buffer = engine->GetBoundBuffer();
+    return bound_buffer;
+}
+
 void ConstBufferLocker::InsertKey(u32 buffer, u32 offset, u32 value) {
     keys.insert_or_assign({buffer, offset}, value);
 }
@@ -78,6 +90,11 @@ void ConstBufferLocker::InsertBindlessSampler(u32 buffer, u32 offset, SamplerDes
     bindless_samplers.insert_or_assign({buffer, offset}, sampler);
 }
 
+void ConstBufferLocker::SetBoundBuffer(u32 buffer) {
+    bound_buffer_saved = true;
+    bound_buffer = buffer;
+}
+
 bool ConstBufferLocker::IsConsistent() const {
     if (!engine) {
         return false;
diff --git a/src/video_core/shader/const_buffer_locker.h b/src/video_core/shader/const_buffer_locker.h
index 78d9d7037..f26cce2ce 100644
--- a/src/video_core/shader/const_buffer_locker.h
+++ b/src/video_core/shader/const_buffer_locker.h
@@ -41,6 +41,8 @@ public:
 
     std::optional<Tegra::Engines::SamplerDescriptor> ObtainBindlessSampler(u32 buffer, u32 offset);
 
+    std::optional<u32> ObtainBoundBuffer();
+
     /// Inserts a key.
     void InsertKey(u32 buffer, u32 offset, u32 value);
 
@@ -50,6 +52,10 @@ public:
     /// Inserts a bindless sampler key.
     void InsertBindlessSampler(u32 buffer, u32 offset, Tegra::Engines::SamplerDescriptor sampler);
 
+    /// Set the bound buffer for this locker.
+
+    void SetBoundBuffer(u32 buffer);
+
     /// Checks keys and samplers against engine's current const buffers. Returns true if they are
     /// the same value, false otherwise;
     bool IsConsistent() const;
@@ -72,6 +78,10 @@ public:
         return bindless_samplers;
     }
 
+    u32 GetBoundBuffer() const {
+        return bound_buffer;
+    }
+
     VideoCore::GuestDriverProfile* AccessGuestDriverProfile() {
         if (engine) {
             return &(engine->AccessGuestDriverProfile());
@@ -85,6 +95,8 @@ private:
     KeyMap keys;
     BoundSamplerMap bound_samplers;
     BindlessSamplerMap bindless_samplers;
+    bool bound_buffer_saved{};
+    u32 bound_buffer{};
 };
 
 } // namespace VideoCommon::Shader