video_core: Refactor command_processor.

Inline the WriteReg helper as it is called ~20k times per frame.

src/video_core/command_processor.cpp

@@ -28,51 +28,52 @@ enum class BufferMethods {
     CountBufferMethods = 0x40,
 };
 
-void GPU::WriteReg(u32 method, u32 subchannel, u32 value, u32 remaining_params) {
-    LOG_TRACE(HW_GPU,
-              "Processing method {:08X} on subchannel {} value "
-              "{:08X} remaining params {}",
-              method, subchannel, value, remaining_params);
-
-    ASSERT(subchannel < bound_engines.size());
-
-    if (method == static_cast<u32>(BufferMethods::BindObject)) {
-        // Bind the current subchannel to the desired engine id.
-        LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", subchannel, value);
-        bound_engines[subchannel] = static_cast<EngineID>(value);
-        return;
-    }
-
-    if (method < static_cast<u32>(BufferMethods::CountBufferMethods)) {
-        // TODO(Subv): Research and implement these methods.
-        LOG_ERROR(HW_GPU, "Special buffer methods other than Bind are not implemented");
-        return;
-    }
-
-    const EngineID engine = bound_engines[subchannel];
-
-    switch (engine) {
-    case EngineID::FERMI_TWOD_A:
-        fermi_2d->WriteReg(method, value);
-        break;
-    case EngineID::MAXWELL_B:
-        maxwell_3d->WriteReg(method, value, remaining_params);
-        break;
-    case EngineID::MAXWELL_COMPUTE_B:
-        maxwell_compute->WriteReg(method, value);
-        break;
-    case EngineID::MAXWELL_DMA_COPY_A:
-        maxwell_dma->WriteReg(method, value);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Unimplemented engine");
-    }
-}
-
 MICROPROFILE_DEFINE(ProcessCommandLists, "GPU", "Execute command buffer", MP_RGB(128, 128, 192));
 
 void GPU::ProcessCommandLists(const std::vector<CommandListHeader>& commands) {
     MICROPROFILE_SCOPE(ProcessCommandLists);
+
+    auto WriteReg = [this](u32 method, u32 subchannel, u32 value, u32 remaining_params) {
+        LOG_TRACE(HW_GPU,
+                  "Processing method {:08X} on subchannel {} value "
+                  "{:08X} remaining params {}",
+                  method, subchannel, value, remaining_params);
+
+        ASSERT(subchannel < bound_engines.size());
+
+        if (method == static_cast<u32>(BufferMethods::BindObject)) {
+            // Bind the current subchannel to the desired engine id.
+            LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", subchannel, value);
+            bound_engines[subchannel] = static_cast<EngineID>(value);
+            return;
+        }
+
+        if (method < static_cast<u32>(BufferMethods::CountBufferMethods)) {
+            // TODO(Subv): Research and implement these methods.
+            LOG_ERROR(HW_GPU, "Special buffer methods other than Bind are not implemented");
+            return;
+        }
+
+        const EngineID engine = bound_engines[subchannel];
+
+        switch (engine) {
+        case EngineID::FERMI_TWOD_A:
+            fermi_2d->WriteReg(method, value);
+            break;
+        case EngineID::MAXWELL_B:
+            maxwell_3d->WriteReg(method, value, remaining_params);
+            break;
+        case EngineID::MAXWELL_COMPUTE_B:
+            maxwell_compute->WriteReg(method, value);
+            break;
+        case EngineID::MAXWELL_DMA_COPY_A:
+            maxwell_dma->WriteReg(method, value);
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unimplemented engine");
+        }
+    };
+
     for (auto entry : commands) {
         Tegra::GPUVAddr address = entry.Address();
         u32 size = entry.sz;

src/video_core/gpu.h

@@ -132,9 +132,6 @@ public:
     const Tegra::MemoryManager& MemoryManager() const;
 
 private:
-    /// Writes a single register in the engine bound to the specified subchannel
-    void WriteReg(u32 method, u32 subchannel, u32 value, u32 remaining_params);
-
     std::unique_ptr<Tegra::MemoryManager> memory_manager;
 
     /// Mapping of command subchannels to their bound engine ids.