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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "citra_qt/debugger/graphics_vertex_shader.h"
#include <iomanip>
#include <sstream>
#include <QBoxLayout>
#include <QFileDialog>
#include <QFormLayout>
#include <QGroupBox>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QSignalMapper>
#include <QSpinBox>
#include <QTreeView>
#include "citra_qt/util/util.h"
#include "video_core/pica.h"
#include "video_core/pica_state.h"
#include "video_core/shader/shader.h"
using nihstro::OpCode;
using nihstro::Instruction;
using nihstro::SourceRegister;
using nihstro::SwizzlePattern;
GraphicsVertexShaderModel::GraphicsVertexShaderModel(GraphicsVertexShaderWidget* parent)
: QAbstractTableModel(parent), par(parent) {}
int GraphicsVertexShaderModel::columnCount(const QModelIndex& parent) const {
return 3;
}
int GraphicsVertexShaderModel::rowCount(const QModelIndex& parent) const {
return static_cast<int>(par->info.code.size());
}
QVariant GraphicsVertexShaderModel::headerData(int section, Qt::Orientation orientation,
int role) const {
switch (role) {
case Qt::DisplayRole: {
if (section == 0) {
return tr("Offset");
} else if (section == 1) {
return tr("Raw");
} else if (section == 2) {
return tr("Disassembly");
}
break;
}
}
return QVariant();
}
static std::string SelectorToString(u32 selector) {
std::string ret;
for (int i = 0; i < 4; ++i) {
int component = (selector >> ((3 - i) * 2)) & 3;
ret += "xyzw"[component];
}
return ret;
}
// e.g. "-c92[a0.x].xyzw"
static void print_input(std::ostringstream& output, const SourceRegister& input, bool negate,
const std::string& swizzle_mask, bool align = true,
const std::string& address_register_name = std::string()) {
if (align)
output << std::setw(4) << std::right;
output << ((negate ? "-" : "") + input.GetName());
if (!address_register_name.empty())
output << '[' << address_register_name << ']';
output << '.' << swizzle_mask;
};
QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) const {
switch (role) {
case Qt::DisplayRole: {
switch (index.column()) {
case 0:
if (par->info.HasLabel(index.row()))
return QString::fromStdString(par->info.GetLabel(index.row()));
return QString("%1").arg(4 * index.row(), 4, 16, QLatin1Char('0'));
case 1:
return QString("%1").arg(par->info.code[index.row()].hex, 8, 16, QLatin1Char('0'));
case 2: {
std::ostringstream output;
output.flags(std::ios::uppercase);
// To make the code aligning columns of assembly easier to keep track of, this function
// keeps track of the start of the start of the previous column, allowing alignment
// based on desired field widths.
int current_column = 0;
auto AlignToColumn = [&](int col_width) {
// Prints spaces to the output to pad previous column to size and advances the
// column marker.
current_column += col_width;
int to_add = std::max(1, current_column - (int)output.tellp());
for (int i = 0; i < to_add; ++i) {
output << ' ';
}
};
const Instruction instr = par->info.code[index.row()];
const OpCode opcode = instr.opcode;
const OpCode::Info opcode_info = opcode.GetInfo();
const u32 operand_desc_id = opcode_info.type == OpCode::Type::MultiplyAdd
? instr.mad.operand_desc_id.Value()
: instr.common.operand_desc_id.Value();
const SwizzlePattern swizzle = par->info.swizzle_info[operand_desc_id].pattern;
// longest known instruction name: "setemit "
int kOpcodeColumnWidth = 8;
// "rXX.xyzw "
int kOutputColumnWidth = 10;
// "-rXX.xyzw ", no attempt is made to align indexed inputs
int kInputOperandColumnWidth = 11;
output << opcode_info.name;
switch (opcode_info.type) {
case OpCode::Type::Trivial:
// Nothing to do here
break;
case OpCode::Type::Arithmetic:
case OpCode::Type::MultiplyAdd: {
// Use custom code for special instructions
switch (opcode.EffectiveOpCode()) {
case OpCode::Id::CMP: {
AlignToColumn(kOpcodeColumnWidth);
// NOTE: CMP always writes both cc components, so we do not consider the dest
// mask here.
output << " cc.xy";
AlignToColumn(kOutputColumnWidth);
SourceRegister src1 = instr.common.GetSrc1(false);
SourceRegister src2 = instr.common.GetSrc2(false);
output << ' ';
print_input(output, src1, swizzle.negate_src1,
swizzle.SelectorToString(false).substr(0, 1), false,
instr.common.AddressRegisterName());
output << ' ' << instr.common.compare_op.ToString(instr.common.compare_op.x)
<< ' ';
print_input(output, src2, swizzle.negate_src2,
swizzle.SelectorToString(true).substr(0, 1), false);
output << ", ";
print_input(output, src1, swizzle.negate_src1,
swizzle.SelectorToString(false).substr(1, 1), false,
instr.common.AddressRegisterName());
output << ' ' << instr.common.compare_op.ToString(instr.common.compare_op.y)
<< ' ';
print_input(output, src2, swizzle.negate_src2,
swizzle.SelectorToString(true).substr(1, 1), false);
break;
}
case OpCode::Id::MAD:
case OpCode::Id::MADI: {
AlignToColumn(kOpcodeColumnWidth);
bool src_is_inverted = 0 != (opcode_info.subtype & OpCode::Info::SrcInversed);
SourceRegister src1 = instr.mad.GetSrc1(src_is_inverted);
SourceRegister src2 = instr.mad.GetSrc2(src_is_inverted);
SourceRegister src3 = instr.mad.GetSrc3(src_is_inverted);
output << std::setw(3) << std::right << instr.mad.dest.Value().GetName() << '.'
<< swizzle.DestMaskToString();
AlignToColumn(kOutputColumnWidth);
print_input(output, src1, swizzle.negate_src1,
SelectorToString(swizzle.src1_selector));
AlignToColumn(kInputOperandColumnWidth);
if (src_is_inverted) {
print_input(output, src2, swizzle.negate_src2,
SelectorToString(swizzle.src2_selector));
} else {
print_input(output, src2, swizzle.negate_src2,
SelectorToString(swizzle.src2_selector), true,
instr.mad.AddressRegisterName());
}
AlignToColumn(kInputOperandColumnWidth);
if (src_is_inverted) {
print_input(output, src3, swizzle.negate_src3,
SelectorToString(swizzle.src3_selector), true,
instr.mad.AddressRegisterName());
} else {
print_input(output, src3, swizzle.negate_src3,
SelectorToString(swizzle.src3_selector));
}
AlignToColumn(kInputOperandColumnWidth);
break;
}
default: {
AlignToColumn(kOpcodeColumnWidth);
bool src_is_inverted = 0 != (opcode_info.subtype & OpCode::Info::SrcInversed);
if (opcode_info.subtype & OpCode::Info::Dest) {
// e.g. "r12.xy__"
output << std::setw(3) << std::right << instr.common.dest.Value().GetName()
<< '.' << swizzle.DestMaskToString();
} else if (opcode_info.subtype == OpCode::Info::MOVA) {
output << " a0." << swizzle.DestMaskToString();
}
AlignToColumn(kOutputColumnWidth);
if (opcode_info.subtype & OpCode::Info::Src1) {
SourceRegister src1 = instr.common.GetSrc1(src_is_inverted);
print_input(output, src1, swizzle.negate_src1,
swizzle.SelectorToString(false), true,
instr.common.AddressRegisterName());
AlignToColumn(kInputOperandColumnWidth);
}
// TODO: In some cases, the Address Register is used as an index for SRC2
// instead of SRC1
if (opcode_info.subtype & OpCode::Info::Src2) {
SourceRegister src2 = instr.common.GetSrc2(src_is_inverted);
print_input(output, src2, swizzle.negate_src2,
swizzle.SelectorToString(true));
AlignToColumn(kInputOperandColumnWidth);
}
break;
}
}
break;
}
case OpCode::Type::Conditional:
case OpCode::Type::UniformFlowControl: {
output << ' ';
switch (opcode.EffectiveOpCode()) {
case OpCode::Id::LOOP:
output << "(unknown instruction format)";
break;
default:
if (opcode_info.subtype & OpCode::Info::HasCondition) {
output << '(';
if (instr.flow_control.op != instr.flow_control.JustY) {
if (instr.flow_control.refx)
output << '!';
output << "cc.x";
}
if (instr.flow_control.op == instr.flow_control.Or) {
output << " || ";
} else if (instr.flow_control.op == instr.flow_control.And) {
output << " && ";
}
if (instr.flow_control.op != instr.flow_control.JustX) {
if (instr.flow_control.refy)
output << '!';
output << "cc.y";
}
output << ") ";
} else if (opcode_info.subtype & OpCode::Info::HasUniformIndex) {
output << 'b' << instr.flow_control.bool_uniform_id << ' ';
}
u32 target_addr = instr.flow_control.dest_offset;
u32 target_addr_else = instr.flow_control.dest_offset;
if (opcode_info.subtype & OpCode::Info::HasAlternative) {
output << "else jump to 0x" << std::setw(4) << std::right
<< std::setfill('0') << std::hex
<< (4 * instr.flow_control.dest_offset);
} else if (opcode_info.subtype & OpCode::Info::HasExplicitDest) {
output << "jump to 0x" << std::setw(4) << std::right << std::setfill('0')
<< std::hex << (4 * instr.flow_control.dest_offset);
} else {
// TODO: Handle other cases
output << "(unknown destination)";
}
if (opcode_info.subtype & OpCode::Info::HasFinishPoint) {
output << " (return on 0x" << std::setw(4) << std::right
<< std::setfill('0') << std::hex
<< (4 * instr.flow_control.dest_offset +
4 * instr.flow_control.num_instructions)
<< ')';
}
break;
}
break;
}
default:
output << " (unknown instruction format)";
break;
}
return QString::fromLatin1(output.str().c_str());
}
default:
break;
}
}
case Qt::FontRole:
return GetMonospaceFont();
case Qt::BackgroundRole: {
// Highlight current instruction
int current_record_index = par->cycle_index->value();
if (current_record_index < static_cast<int>(par->debug_data.records.size())) {
const auto& current_record = par->debug_data.records[current_record_index];
if (index.row() == static_cast<int>(current_record.instruction_offset)) {
return QColor(255, 255, 63);
}
}
// Use a grey background for instructions which have no debug data associated to them
for (const auto& record : par->debug_data.records)
if (index.row() == static_cast<int>(record.instruction_offset))
return QVariant();
return QBrush(QColor(192, 192, 192));
}
// TODO: Draw arrows for each "reachable" instruction to visualize control flow
default:
break;
}
return QVariant();
}
void GraphicsVertexShaderWidget::DumpShader() {
QString filename = QFileDialog::getSaveFileName(
this, tr("Save Shader Dump"), "shader_dump.shbin", tr("Shader Binary (*.shbin)"));
if (filename.isEmpty()) {
// If the user canceled the dialog, don't dump anything.
return;
}
auto& setup = Pica::g_state.vs;
auto& config = Pica::g_state.regs.vs;
Pica::DebugUtils::DumpShader(filename.toStdString(), config, setup,
Pica::g_state.regs.vs_output_attributes);
}
GraphicsVertexShaderWidget::GraphicsVertexShaderWidget(
std::shared_ptr<Pica::DebugContext> debug_context, QWidget* parent)
: BreakPointObserverDock(debug_context, "Pica Vertex Shader", parent) {
setObjectName("PicaVertexShader");
// Clear input vertex data so that it contains valid float values in case a debug shader
// execution happens before the first Vertex Loaded breakpoint.
// TODO: This makes a crash in the interpreter much less likely, but not impossible. The
// interpreter should guard against out-of-bounds accesses to ensure crashes in it aren't
// possible.
std::memset(&input_vertex, 0, sizeof(input_vertex));
auto input_data_mapper = new QSignalMapper(this);
// TODO: Support inputting data in hexadecimal raw format
for (unsigned i = 0; i < ARRAY_SIZE(input_data); ++i) {
input_data[i] = new QLineEdit;
input_data[i]->setValidator(new QDoubleValidator(input_data[i]));
}
breakpoint_warning =
new QLabel(tr("(data only available at vertex shader invocation breakpoints)"));
// TODO: Add some button for jumping to the shader entry point
model = new GraphicsVertexShaderModel(this);
binary_list = new QTreeView;
binary_list->setModel(model);
binary_list->setRootIsDecorated(false);
binary_list->setAlternatingRowColors(true);
auto dump_shader = new QPushButton(QIcon::fromTheme("document-save"), tr("Dump"));
instruction_description = new QLabel;
cycle_index = new QSpinBox;
connect(dump_shader, SIGNAL(clicked()), this, SLOT(DumpShader()));
connect(cycle_index, SIGNAL(valueChanged(int)), this, SLOT(OnCycleIndexChanged(int)));
for (unsigned i = 0; i < ARRAY_SIZE(input_data); ++i) {
connect(input_data[i], SIGNAL(textEdited(const QString&)), input_data_mapper, SLOT(map()));
input_data_mapper->setMapping(input_data[i], i);
}
connect(input_data_mapper, SIGNAL(mapped(int)), this, SLOT(OnInputAttributeChanged(int)));
auto main_widget = new QWidget;
auto main_layout = new QVBoxLayout;
{
auto input_data_group = new QGroupBox(tr("Input Data"));
// For each vertex attribute, add a QHBoxLayout consisting of:
// - A QLabel denoting the source attribute index
// - Four QLineEdits for showing and manipulating attribute data
// - A QLabel denoting the shader input attribute index
auto sub_layout = new QVBoxLayout;
for (unsigned i = 0; i < 16; ++i) {
// Create an HBoxLayout to store the widgets used to specify a particular attribute
// and store it in a QWidget to allow for easy hiding and unhiding.
auto row_layout = new QHBoxLayout;
// Remove unecessary padding between rows
row_layout->setContentsMargins(0, 0, 0, 0);
row_layout->addWidget(new QLabel(tr("Attribute %1").arg(i, 2)));
for (unsigned comp = 0; comp < 4; ++comp)
row_layout->addWidget(input_data[4 * i + comp]);
row_layout->addWidget(input_data_mapping[i] = new QLabel);
input_data_container[i] = new QWidget;
input_data_container[i]->setLayout(row_layout);
input_data_container[i]->hide();
sub_layout->addWidget(input_data_container[i]);
}
sub_layout->addWidget(breakpoint_warning);
breakpoint_warning->hide();
input_data_group->setLayout(sub_layout);
main_layout->addWidget(input_data_group);
}
// Make program listing expand to fill available space in the dialog
binary_list->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::MinimumExpanding);
main_layout->addWidget(binary_list);
main_layout->addWidget(dump_shader);
{
auto sub_layout = new QFormLayout;
sub_layout->addRow(tr("Cycle Index:"), cycle_index);
main_layout->addLayout(sub_layout);
}
// Set a minimum height so that the size of this label doesn't cause the rest of the bottom
// part of the UI to keep jumping up and down when cycling through instructions.
instruction_description->setMinimumHeight(instruction_description->fontMetrics().lineSpacing() *
6);
instruction_description->setAlignment(Qt::AlignLeft | Qt::AlignTop);
main_layout->addWidget(instruction_description);
main_widget->setLayout(main_layout);
setWidget(main_widget);
widget()->setEnabled(false);
}
void GraphicsVertexShaderWidget::OnBreakPointHit(Pica::DebugContext::Event event, void* data) {
auto input = static_cast<Pica::Shader::InputVertex*>(data);
if (event == Pica::DebugContext::Event::VertexShaderInvocation) {
Reload(true, data);
} else {
// No vertex data is retrievable => invalidate currently stored vertex data
Reload(true, nullptr);
}
widget()->setEnabled(true);
}
void GraphicsVertexShaderWidget::Reload(bool replace_vertex_data, void* vertex_data) {
model->beginResetModel();
if (replace_vertex_data) {
if (vertex_data) {
memcpy(&input_vertex, vertex_data, sizeof(input_vertex));
for (unsigned attr = 0; attr < 16; ++attr) {
for (unsigned comp = 0; comp < 4; ++comp) {
input_data[4 * attr + comp]->setText(
QString("%1").arg(input_vertex.attr[attr][comp].ToFloat32()));
}
}
breakpoint_warning->hide();
} else {
for (unsigned attr = 0; attr < 16; ++attr) {
for (unsigned comp = 0; comp < 4; ++comp) {
input_data[4 * attr + comp]->setText(QString("???"));
}
}
breakpoint_warning->show();
}
}
// Reload shader code
info.Clear();
auto& shader_setup = Pica::g_state.vs;
auto& shader_config = Pica::g_state.regs.vs;
for (auto instr : shader_setup.program_code)
info.code.push_back({instr});
int num_attributes = Pica::g_state.regs.vertex_attributes.GetNumTotalAttributes();
for (auto pattern : shader_setup.swizzle_data)
info.swizzle_info.push_back({pattern});
u32 entry_point = Pica::g_state.regs.vs.main_offset;
info.labels.insert({entry_point, "main"});
// Generate debug information
debug_data = Pica::g_state.vs.ProduceDebugInfo(input_vertex, num_attributes, shader_config,
shader_setup);
// Reload widget state
for (int attr = 0; attr < num_attributes; ++attr) {
unsigned source_attr = shader_config.input_register_map.GetRegisterForAttribute(attr);
input_data_mapping[attr]->setText(QString("-> v%1").arg(source_attr));
input_data_container[attr]->setVisible(true);
}
// Only show input attributes which are used as input to the shader
for (unsigned int attr = num_attributes; attr < 16; ++attr) {
input_data_container[attr]->setVisible(false);
}
// Initialize debug info text for current cycle count
cycle_index->setMaximum(static_cast<int>(debug_data.records.size() - 1));
OnCycleIndexChanged(cycle_index->value());
model->endResetModel();
}
void GraphicsVertexShaderWidget::OnResumed() {
widget()->setEnabled(false);
}
void GraphicsVertexShaderWidget::OnInputAttributeChanged(int index) {
float value = input_data[index]->text().toFloat();
input_vertex.attr[index / 4][index % 4] = Pica::float24::FromFloat32(value);
// Re-execute shader with updated value
Reload();
}
void GraphicsVertexShaderWidget::OnCycleIndexChanged(int index) {
QString text;
auto& record = debug_data.records[index];
if (record.mask & Pica::Shader::DebugDataRecord::SRC1)
text += tr("SRC1: %1, %2, %3, %4\n")
.arg(record.src1.x.ToFloat32())
.arg(record.src1.y.ToFloat32())
.arg(record.src1.z.ToFloat32())
.arg(record.src1.w.ToFloat32());
if (record.mask & Pica::Shader::DebugDataRecord::SRC2)
text += tr("SRC2: %1, %2, %3, %4\n")
.arg(record.src2.x.ToFloat32())
.arg(record.src2.y.ToFloat32())
.arg(record.src2.z.ToFloat32())
.arg(record.src2.w.ToFloat32());
if (record.mask & Pica::Shader::DebugDataRecord::SRC3)
text += tr("SRC3: %1, %2, %3, %4\n")
.arg(record.src3.x.ToFloat32())
.arg(record.src3.y.ToFloat32())
.arg(record.src3.z.ToFloat32())
.arg(record.src3.w.ToFloat32());
if (record.mask & Pica::Shader::DebugDataRecord::DEST_IN)
text += tr("DEST_IN: %1, %2, %3, %4\n")
.arg(record.dest_in.x.ToFloat32())
.arg(record.dest_in.y.ToFloat32())
.arg(record.dest_in.z.ToFloat32())
.arg(record.dest_in.w.ToFloat32());
if (record.mask & Pica::Shader::DebugDataRecord::DEST_OUT)
text += tr("DEST_OUT: %1, %2, %3, %4\n")
.arg(record.dest_out.x.ToFloat32())
.arg(record.dest_out.y.ToFloat32())
.arg(record.dest_out.z.ToFloat32())
.arg(record.dest_out.w.ToFloat32());
if (record.mask & Pica::Shader::DebugDataRecord::ADDR_REG_OUT)
text += tr("Addres Registers: %1, %2\n")
.arg(record.address_registers[0])
.arg(record.address_registers[1]);
if (record.mask & Pica::Shader::DebugDataRecord::CMP_RESULT)
text += tr("Compare Result: %1, %2\n")
.arg(record.conditional_code[0] ? "true" : "false")
.arg(record.conditional_code[1] ? "true" : "false");
if (record.mask & Pica::Shader::DebugDataRecord::COND_BOOL_IN)
text += tr("Static Condition: %1\n").arg(record.cond_bool ? "true" : "false");
if (record.mask & Pica::Shader::DebugDataRecord::COND_CMP_IN)
text += tr("Dynamic Conditions: %1, %2\n")
.arg(record.cond_cmp[0] ? "true" : "false")
.arg(record.cond_cmp[1] ? "true" : "false");
if (record.mask & Pica::Shader::DebugDataRecord::LOOP_INT_IN)
text += tr("Loop Parameters: %1 (repeats), %2 (initializer), %3 (increment), %4\n")
.arg(record.loop_int.x)
.arg(record.loop_int.y)
.arg(record.loop_int.z)
.arg(record.loop_int.w);
text +=
tr("Instruction offset: 0x%1").arg(4 * record.instruction_offset, 4, 16, QLatin1Char('0'));
if (record.mask & Pica::Shader::DebugDataRecord::NEXT_INSTR) {
text += tr(" -> 0x%2").arg(4 * record.next_instruction, 4, 16, QLatin1Char('0'));
} else {
text += tr(" (last instruction)");
}
instruction_description->setText(text);
// Emit model update notification and scroll to current instruction
QModelIndex instr_index = model->index(record.instruction_offset, 0);
emit model->dataChanged(instr_index,
model->index(record.instruction_offset, model->columnCount()));
binary_list->scrollTo(instr_index, QAbstractItemView::EnsureVisible);
}
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