From 6ce5f3120be6a65a798d3abc6fda0fe6171d0296 Mon Sep 17 00:00:00 2001
From: David Marcec <dmarcecguzman@gmail.com>
Date: Fri, 5 Jun 2020 01:42:19 +1000
Subject: Macro HLE support

---
 src/video_core/macro/macro_hle.cpp | 108 +++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 src/video_core/macro/macro_hle.cpp

(limited to 'src/video_core/macro/macro_hle.cpp')

diff --git a/src/video_core/macro/macro_hle.cpp b/src/video_core/macro/macro_hle.cpp
new file mode 100644
index 000000000..51827c822
--- /dev/null
+++ b/src/video_core/macro/macro_hle.cpp
@@ -0,0 +1,108 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <unordered_map>
+#include <vector>
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/macro/macro_hle.h"
+#include "video_core/rasterizer_interface.h"
+
+namespace Tegra {
+
+// HLE'd functions
+static void HLE_771BB18C62444DA0(Engines::Maxwell3D& maxwell3d,
+                                 const std::vector<u32>& parameters) {
+    const u32 instance_count = parameters[2] & maxwell3d.GetRegisterValue(0xD1B);
+
+    maxwell3d.regs.draw.topology.Assign(
+        static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0] &
+                                                                        ~(0x3ffffff << 26)));
+    maxwell3d.regs.vb_base_instance = parameters[5];
+    maxwell3d.mme_draw.instance_count = instance_count;
+    maxwell3d.regs.vb_element_base = parameters[3];
+    maxwell3d.regs.index_array.count = parameters[1];
+    maxwell3d.regs.index_array.first = parameters[4];
+
+    if (maxwell3d.ShouldExecute()) {
+        maxwell3d.GetRasterizer().Draw(true, true);
+    }
+    maxwell3d.regs.index_array.count = 0;
+    maxwell3d.mme_draw.instance_count = 0;
+}
+
+static void HLE_0D61FC9FAAC9FCAD(Engines::Maxwell3D& maxwell3d,
+                                 const std::vector<u32>& parameters) {
+    const u32 count = (maxwell3d.GetRegisterValue(0xD1B) & parameters[2]);
+
+    maxwell3d.regs.vertex_buffer.first = parameters[3];
+    maxwell3d.regs.vertex_buffer.count = parameters[1];
+    maxwell3d.regs.vb_base_instance = parameters[4];
+    maxwell3d.regs.draw.topology.Assign(
+        static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0]));
+    maxwell3d.mme_draw.instance_count = count;
+
+    if (maxwell3d.ShouldExecute()) {
+        maxwell3d.GetRasterizer().Draw(false, true);
+    }
+    maxwell3d.regs.vertex_buffer.count = 0;
+    maxwell3d.mme_draw.instance_count = 0;
+}
+
+static void HLE_0217920100488FF7(Engines::Maxwell3D& maxwell3d,
+                                 const std::vector<u32>& parameters) {
+    const u32 instance_count = (maxwell3d.GetRegisterValue(0xD1B) & parameters[2]);
+    const u32 element_base = parameters[4];
+    const u32 base_instance = parameters[5];
+    maxwell3d.regs.index_array.first = parameters[3];
+    maxwell3d.regs.reg_array[0x446] = element_base; // vertex id base?
+    maxwell3d.regs.index_array.count = parameters[1];
+    maxwell3d.regs.vb_element_base = element_base;
+    maxwell3d.regs.vb_base_instance = base_instance;
+    maxwell3d.regs.const_buffer.cb_pos = 0x640;
+    maxwell3d.mme_draw.instance_count = instance_count;
+    maxwell3d.regs.const_buffer.cb_data[0] = element_base;
+    maxwell3d.regs.const_buffer.cb_data[1] = base_instance;
+    maxwell3d.regs.draw.topology.Assign(
+        static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0]));
+    if (maxwell3d.ShouldExecute()) {
+        maxwell3d.GetRasterizer().Draw(true, true);
+    }
+    maxwell3d.regs.reg_array[0x446] = 0x0; // vertex id base?
+    maxwell3d.regs.index_array.count = 0;
+    maxwell3d.regs.vb_element_base = 0x0;
+    maxwell3d.regs.vb_base_instance = 0x0;
+    maxwell3d.regs.const_buffer.cb_pos = 0x640;
+    maxwell3d.regs.const_buffer.cb_data[0] = 0;
+    maxwell3d.regs.const_buffer.cb_data[1] = 0;
+    maxwell3d.mme_draw.instance_count = 0;
+}
+
+static const std::unordered_map<u64, HLEFunction> hle_funcs{
+    {0x771BB18C62444DA0, &HLE_771BB18C62444DA0},
+    {0x0D61FC9FAAC9FCAD, &HLE_0D61FC9FAAC9FCAD},
+    {0x0217920100488FF7, &HLE_0217920100488FF7},
+};
+
+HLEMacro::HLEMacro(Engines::Maxwell3D& maxwell3d) : maxwell3d(maxwell3d) {}
+HLEMacro::~HLEMacro() = default;
+
+std::optional<std::unique_ptr<CachedMacro>> HLEMacro::GetHLEProgram(u64 hash) const {
+    auto it = hle_funcs.find(hash);
+    if (it != hle_funcs.end()) {
+        return std::make_unique<HLEMacroImpl>(maxwell3d, it->second);
+    } else {
+        return {};
+    }
+}
+
+HLEMacroImpl::~HLEMacroImpl() = default;
+
+HLEMacroImpl::HLEMacroImpl(Engines::Maxwell3D& maxwell3d, HLEFunction func)
+    : maxwell3d(maxwell3d), func(func) {}
+
+void HLEMacroImpl::Execute(const std::vector<u32>& parameters, u32 method) {
+    func(maxwell3d, parameters);
+}
+
+} // namespace Tegra
-- 
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