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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <array>
#include <vector>
#include "common/scope_exit.h"
#include "video_core/dirty_flags.h"
#include "video_core/engines/draw_manager.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/macro/macro.h"
#include "video_core/macro/macro_hle.h"
#include "video_core/memory_manager.h"
#include "video_core/rasterizer_interface.h"
namespace Tegra {
namespace {
using HLEFunction = void (*)(Engines::Maxwell3D& maxwell3d, const std::vector<u32>& parameters);
// HLE'd functions
void HLE_771BB18C62444DA0(Engines::Maxwell3D& maxwell3d, const std::vector<u32>& parameters) {
const u32 instance_count = parameters[2] & maxwell3d.GetRegisterValue(0xD1B);
maxwell3d.draw_manager->DrawIndex(
static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0] & 0x3ffffff),
parameters[4], parameters[1], parameters[3], parameters[5], instance_count);
}
void HLE_DrawArraysIndirect(Engines::Maxwell3D& maxwell3d, const std::vector<u32>& parameters) {
const u32 instance_count = (maxwell3d.GetRegisterValue(0xD1B) & parameters[2]);
maxwell3d.draw_manager->DrawArray(
static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0]),
parameters[3], parameters[1], parameters[4], instance_count);
}
void HLE_DrawIndexedIndirect(Engines::Maxwell3D& maxwell3d, const std::vector<u32>& parameters) {
const u32 element_base = parameters[4];
const u32 base_instance = parameters[5];
maxwell3d.regs.vertex_id_base = element_base;
maxwell3d.dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
maxwell3d.CallMethod(0x8e3, 0x640, true);
maxwell3d.CallMethod(0x8e4, element_base, true);
maxwell3d.CallMethod(0x8e5, base_instance, true);
auto& params = maxwell3d.draw_manager->GetIndirectParams();
params.is_indexed = true;
params.include_count = false;
params.count_start_address = 0;
params.indirect_start_address = maxwell3d.macro_addresses[1];
params.buffer_size = 5 * sizeof(u32);
params.max_draw_counts = 1;
params.stride = 0;
maxwell3d.draw_manager->DrawIndexedIndirect(
static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[0]), 0,
1U << 18);
maxwell3d.regs.vertex_id_base = 0x0;
maxwell3d.CallMethod(0x8e3, 0x640, true);
maxwell3d.CallMethod(0x8e4, 0x0, true);
maxwell3d.CallMethod(0x8e5, 0x0, true);
}
// Multidraw Indixed Indirect
void HLE_MultiDrawIndexedIndirect(Engines::Maxwell3D& maxwell3d,
const std::vector<u32>& parameters) {
const u32 start_indirect = parameters[0];
const u32 end_indirect = parameters[1];
if (start_indirect >= end_indirect) {
// Nothing to do.
return;
}
const auto topology =
static_cast<Tegra::Engines::Maxwell3D::Regs::PrimitiveTopology>(parameters[2]);
const u32 padding = parameters[3]; // padding is in words
// size of each indirect segment
const u32 indirect_words = 5 + padding;
const u32 stride = indirect_words * sizeof(u32);
const std::size_t draw_count = end_indirect - start_indirect;
u32 lowest_first = std::numeric_limits<u32>::max();
u32 highest_limit = std::numeric_limits<u32>::min();
for (std::size_t index = 0; index < draw_count; index++) {
const std::size_t base = index * indirect_words + 5;
const u32 count = parameters[base];
const u32 first_index = parameters[base + 2];
lowest_first = std::min(lowest_first, first_index);
highest_limit = std::max(highest_limit, first_index + count);
}
const u32 base_vertex = parameters[8];
const u32 base_instance = parameters[9];
maxwell3d.regs.vertex_id_base = base_vertex;
maxwell3d.CallMethod(0x8e3, 0x640, true);
maxwell3d.CallMethod(0x8e4, base_vertex, true);
maxwell3d.CallMethod(0x8e5, base_instance, true);
auto& params = maxwell3d.draw_manager->GetIndirectParams();
params.is_indexed = true;
params.include_count = true;
params.count_start_address = maxwell3d.macro_addresses[4];
params.indirect_start_address = maxwell3d.macro_addresses[5];
params.buffer_size = stride * draw_count;
params.max_draw_counts = draw_count;
params.stride = stride;
maxwell3d.dirty.flags[VideoCommon::Dirty::IndexBuffer] = true;
maxwell3d.draw_manager->DrawIndexedIndirect(topology, 0, highest_limit);
}
// Multi-layer Clear
void HLE_MultiLayerClear(Engines::Maxwell3D& maxwell3d, const std::vector<u32>& parameters) {
ASSERT(parameters.size() == 1);
const Engines::Maxwell3D::Regs::ClearSurface clear_params{parameters[0]};
const u32 rt_index = clear_params.RT;
const u32 num_layers = maxwell3d.regs.rt[rt_index].depth;
ASSERT(clear_params.layer == 0);
maxwell3d.regs.clear_surface.raw = clear_params.raw;
maxwell3d.draw_manager->Clear(num_layers);
}
constexpr std::array<std::pair<u64, HLEFunction>, 5> hle_funcs{{
{0x771BB18C62444DA0, &HLE_771BB18C62444DA0},
{0x0D61FC9FAAC9FCAD, &HLE_DrawArraysIndirect},
{0x0217920100488FF7, &HLE_DrawIndexedIndirect},
{0x3F5E74B9C9A50164, &HLE_MultiDrawIndexedIndirect},
{0xEAD26C3E2109B06B, &HLE_MultiLayerClear},
}};
class HLEMacroImpl final : public CachedMacro {
public:
explicit HLEMacroImpl(Engines::Maxwell3D& maxwell3d_, HLEFunction func_)
: maxwell3d{maxwell3d_}, func{func_} {}
void Execute(const std::vector<u32>& parameters, u32 method) override {
func(maxwell3d, parameters);
}
private:
Engines::Maxwell3D& maxwell3d;
HLEFunction func;
};
} // Anonymous namespace
HLEMacro::HLEMacro(Engines::Maxwell3D& maxwell3d_) : maxwell3d{maxwell3d_} {}
HLEMacro::~HLEMacro() = default;
std::unique_ptr<CachedMacro> HLEMacro::GetHLEProgram(u64 hash) const {
const auto it = std::find_if(hle_funcs.cbegin(), hle_funcs.cend(),
[hash](const auto& pair) { return pair.first == hash; });
if (it == hle_funcs.end()) {
return nullptr;
}
return std::make_unique<HLEMacroImpl>(maxwell3d, it->second);
}
} // namespace Tegra
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