From a5a94f52ffcbf3119d272a9369021a213ea6dad2 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Wed, 9 Feb 2022 15:00:05 +0100
Subject: MacroHLE: Add MultidrawIndirect HLE Macro.

---
 src/video_core/engines/draw_manager.cpp   | 21 +++++++++++++++++++++
 src/video_core/engines/draw_manager.h     | 20 ++++++++++++++++++++
 src/video_core/engines/engine_interface.h |  2 ++
 3 files changed, 43 insertions(+)

(limited to 'src/video_core/engines')

diff --git a/src/video_core/engines/draw_manager.cpp b/src/video_core/engines/draw_manager.cpp
index 3a78421f6..4fa77b684 100644
--- a/src/video_core/engines/draw_manager.cpp
+++ b/src/video_core/engines/draw_manager.cpp
@@ -91,6 +91,16 @@ void DrawManager::DrawIndex(PrimitiveTopology topology, u32 index_first, u32 ind
     ProcessDraw(true, num_instances);
 }
 
+void DrawManager::DrawIndexedIndirect(PrimitiveTopology topology, u32 index_first, u32 index_count) {
+    const auto& regs{maxwell3d->regs};
+    draw_state.topology = topology;
+    draw_state.index_buffer = regs.index_buffer;
+    draw_state.index_buffer.first = index_first;
+    draw_state.index_buffer.count = index_count;
+
+    ProcessDrawIndirect(true);
+}
+
 void DrawManager::SetInlineIndexBuffer(u32 index) {
     draw_state.inline_index_draw_indexes.push_back(static_cast<u8>(index & 0x000000ff));
     draw_state.inline_index_draw_indexes.push_back(static_cast<u8>((index & 0x0000ff00) >> 8));
@@ -198,4 +208,15 @@ void DrawManager::ProcessDraw(bool draw_indexed, u32 instance_count) {
         maxwell3d->rasterizer->Draw(draw_indexed, instance_count);
     }
 }
+
+void DrawManager::ProcessDrawIndirect(bool draw_indexed) {
+    LOG_TRACE(HW_GPU, "called, topology={}, count={}", draw_state.topology,
+              draw_indexed ? draw_state.index_buffer.count : draw_state.vertex_buffer.count);
+
+    UpdateTopology();
+
+    if (maxwell3d->ShouldExecute()) {
+        maxwell3d->rasterizer->DrawIndirect(draw_indexed);
+    }
+}
 } // namespace Tegra::Engines
diff --git a/src/video_core/engines/draw_manager.h b/src/video_core/engines/draw_manager.h
index 0e6930a9c..0cdb37f83 100644
--- a/src/video_core/engines/draw_manager.h
+++ b/src/video_core/engines/draw_manager.h
@@ -32,6 +32,13 @@ public:
         std::vector<u8> inline_index_draw_indexes;
     };
 
+    struct IndirectParams {
+        GPUVAddr start_address;
+        size_t buffer_size;
+        size_t max_draw_counts;
+        size_t stride;
+    };
+
     explicit DrawManager(Maxwell3D* maxwell_3d);
 
     void ProcessMethodCall(u32 method, u32 argument);
@@ -46,10 +53,20 @@ public:
     void DrawIndex(PrimitiveTopology topology, u32 index_first, u32 index_count, u32 base_index,
                    u32 base_instance, u32 num_instances);
 
+    void DrawIndexedIndirect(PrimitiveTopology topology, u32 index_first, u32 index_count);
+
     const State& GetDrawState() const {
         return draw_state;
     }
 
+    IndirectParams& GetIndirectParams() {
+        return indirect_state;
+    }
+
+    const IndirectParams& GetIndirectParams() const {
+        return indirect_state;
+    }
+
 private:
     void SetInlineIndexBuffer(u32 index);
 
@@ -63,7 +80,10 @@ private:
 
     void ProcessDraw(bool draw_indexed, u32 instance_count);
 
+    void ProcessDrawIndirect(bool draw_indexed);
+
     Maxwell3D* maxwell3d{};
     State draw_state{};
+    IndirectParams indirect_state{};
 };
 } // namespace Tegra::Engines
diff --git a/src/video_core/engines/engine_interface.h b/src/video_core/engines/engine_interface.h
index 26cde8584..76630272d 100644
--- a/src/video_core/engines/engine_interface.h
+++ b/src/video_core/engines/engine_interface.h
@@ -17,6 +17,8 @@ public:
     /// Write multiple values to the register identified by method.
     virtual void CallMultiMethod(u32 method, const u32* base_start, u32 amount,
                                  u32 methods_pending) = 0;
+
+    GPUVAddr current_dma_segment;
 };
 
 } // namespace Tegra::Engines
-- 
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