核心模板架构

Core/flow/explicit/Explicit_Renderable_Runtime.cpp

@@ -92,7 +92,7 @@ struct Explicit_Input_Frame_Handle final : Render_Input_Frame_Handle {
             runtime->committed_update_states.push_back(std::move(runtime->input.completion_state));
         }
         if (input)
-            input->clear();
+            input->consume();
         runtime->input.pending = false;
     }
     Explicit_Renderable_Runtime_Data* runtime{};
@@ -192,6 +192,13 @@ Render_Input_Write_Guard Explicit_Renderable_Runtime::acquire_edit_input(bool no
     return Render_Input_Write_Guard(d->input.data, std::make_unique<Explicit_Input_Write_Handle>(d.get(), std::move(lock), notify_render));
 }
 
+Render_Input_Frame_Guard Explicit_Renderable_Runtime::acquire_input_read(Renderable_Input_Role) {
+    std::unique_lock<std::mutex> lock(d->input_mutex, std::try_to_lock);
+    if (!lock || !d->input.data)
+        return {};
+    return Render_Input_Frame_Guard(d->input.data, std::make_unique<Explicit_Input_Frame_Handle>(d.get(), std::move(lock)));
+}
+
 Renderable_Frame_View Explicit_Renderable_Runtime::capture_frame_view() {
     std::unique_lock<std::mutex> state_lock(d->state_mutex);
     if (!d->state)

Core/flow/explicit/Explicit_Renderable_Runtime.h

@@ -21,6 +21,7 @@ public:
     Render_State_Read_Guard acquire_edit_state_read() override;
     Render_State_Write_Guard acquire_edit_state() override;
     Render_Input_Write_Guard acquire_edit_input(bool notify_render) override;
+    Render_Input_Frame_Guard acquire_input_read(Renderable_Input_Role role) override;
     Renderable_Frame_View capture_frame_view() override;
     Render_State* state(Renderable_State_Role role) override;
     Input_Data* input_data(Renderable_Input_Role role) override;

Core/flow/low_latency/Low_Latency_Renderable_Runtime.h

@@ -21,6 +21,7 @@ public:
     Render_State_Read_Guard acquire_edit_state_read() override;
     Render_State_Write_Guard acquire_edit_state() override;
     Render_Input_Write_Guard acquire_edit_input(bool notify_render) override;
+    Render_Input_Frame_Guard acquire_input_read(Renderable_Input_Role role) override;
     Renderable_Frame_View capture_frame_view() override;
     Render_State* state(Renderable_State_Role role) override;
     Input_Data* input_data(Renderable_Input_Role role) override;

Core/flow/low_latency/Render_Data.cpp

@@ -240,7 +240,7 @@ struct Low_Latency_Renderable_Runtime_Data {
             committed_update_states.push_back(std::move(slot.completion_state));
         }
         if (slot.data)
-            slot.data->clear();
+            slot.data->consume();
         slot.pending = false;
     }
 };
@@ -379,6 +379,18 @@ Render_Input_Write_Guard Low_Latency_Renderable_Runtime::acquire_edit_input(bool
     return Render_Input_Write_Guard(input, std::make_unique<Low_Latency_Input_Write_Handle>(d.get(), record.lease, notify_render));
 }
 
+Render_Input_Frame_Guard Low_Latency_Renderable_Runtime::acquire_input_read(Renderable_Input_Role role) {
+    Triple_Buffer_Lease lease = d->try_mark_input_role(input_role_index(role));
+    if (!lease)
+        return {};
+    Input_Data* input = d->input_data_by_index(lease.index);
+    if (!input) {
+        d->input_control.unmark_use(lease);
+        return {};
+    }
+    return Render_Input_Frame_Guard(input, std::make_unique<Low_Latency_Input_Frame_Handle>(d.get(), lease));
+}
+
 Renderable_Frame_View Low_Latency_Renderable_Runtime::capture_frame_view() {
     d->sync_state_pipeline();
     Triple_Buffer_Lease state_lease = d->try_mark_state_role(State_Render);