citra-qt: Add pica framebuffer widget.

1 files changed, 282 insertions, 0 deletions

diff --git a/src/citra_qt/debugger/graphics_framebuffer.cpp b/src/citra_qt/debugger/graphics_framebuffer.cpp
new file mode 100644
index 00000000..b91db543
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_framebuffer.cpp
@@ -0,0 +1,282 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <QBoxLayout>
+#include <QComboBox>
+#include <QDebug>
+#include <QLabel>
+#include <QMetaType>
+#include <QPushButton>
+#include <QSpinBox>
+
+#include "video_core/pica.h"
+
+#include "graphics_framebuffer.hxx"
+
+#include "util/spinbox.hxx"
+
+BreakPointObserverDock::BreakPointObserverDock(std::shared_ptr<Pica::DebugContext> debug_context,
+                                               const QString& title, QWidget* parent)
+    : QDockWidget(title, parent), BreakPointObserver(debug_context)
+{
+    qRegisterMetaType<Pica::DebugContext::Event>("Pica::DebugContext::Event");
+
+    connect(this, SIGNAL(Resumed()), this, SLOT(OnResumed()));
+
+    // NOTE: This signal is emitted from a non-GUI thread, but connect() takes
+    //       care of delaying its handling to the GUI thread.
+    connect(this, SIGNAL(BreakPointHit(Pica::DebugContext::Event,void*)),
+            this, SLOT(OnBreakPointHit(Pica::DebugContext::Event,void*)),
+            Qt::BlockingQueuedConnection);
+}
+
+void BreakPointObserverDock::OnPicaBreakPointHit(Pica::DebugContext::Event event, void* data)
+{
+    emit BreakPointHit(event, data);
+}
+
+void BreakPointObserverDock::OnPicaResume()
+{
+    emit Resumed();
+}
+
+
+GraphicsFramebufferWidget::GraphicsFramebufferWidget(std::shared_ptr<Pica::DebugContext> debug_context,
+                                                     QWidget* parent)
+    : BreakPointObserverDock(debug_context, tr("Pica Framebuffer"), parent),
+      framebuffer_source(Source::PicaTarget)
+{
+    setObjectName("PicaFramebuffer");
+
+    framebuffer_source_list = new QComboBox;
+    framebuffer_source_list->addItem(tr("Active Render Target"));
+    framebuffer_source_list->addItem(tr("Custom"));
+    framebuffer_source_list->setCurrentIndex(static_cast<int>(framebuffer_source));
+
+    framebuffer_address_control = new CSpinBox;
+    framebuffer_address_control->SetBase(16);
+    framebuffer_address_control->SetRange(0, 0xFFFFFFFF);
+    framebuffer_address_control->SetPrefix("0x");
+
+    framebuffer_width_control = new QSpinBox;
+    framebuffer_width_control->setMinimum(1);
+    framebuffer_width_control->setMaximum(std::numeric_limits<int>::max()); // TODO: Find actual maximum
+
+    framebuffer_height_control = new QSpinBox;
+    framebuffer_height_control->setMinimum(1);
+    framebuffer_height_control->setMaximum(std::numeric_limits<int>::max()); // TODO: Find actual maximum
+
+    framebuffer_format_control = new QComboBox;
+    framebuffer_format_control->addItem(tr("RGBA8"));
+    framebuffer_format_control->addItem(tr("RGB8"));
+    framebuffer_format_control->addItem(tr("RGBA5551"));
+    framebuffer_format_control->addItem(tr("RGB565"));
+    framebuffer_format_control->addItem(tr("RGBA4"));
+
+    // TODO: This QLabel should shrink the image to the available space rather than just expanding...
+    framebuffer_picture_label = new QLabel;
+
+    auto enlarge_button = new QPushButton(tr("Enlarge"));
+
+    // Connections
+    connect(this, SIGNAL(Update()), this, SLOT(OnUpdate()));
+    connect(framebuffer_source_list, SIGNAL(currentIndexChanged(int)), this, SLOT(OnFramebufferSourceChanged(int)));
+    connect(framebuffer_address_control, SIGNAL(ValueChanged(qint64)), this, SLOT(OnFramebufferAddressChanged(qint64)));
+    connect(framebuffer_width_control, SIGNAL(valueChanged(int)), this, SLOT(OnFramebufferWidthChanged(int)));
+    connect(framebuffer_height_control, SIGNAL(valueChanged(int)), this, SLOT(OnFramebufferHeightChanged(int)));
+    connect(framebuffer_format_control, SIGNAL(currentIndexChanged(int)), this, SLOT(OnFramebufferFormatChanged(int)));
+
+    auto main_widget = new QWidget;
+    auto main_layout = new QVBoxLayout;
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Source:")));
+        sub_layout->addWidget(framebuffer_source_list);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Virtual Address:")));
+        sub_layout->addWidget(framebuffer_address_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Width:")));
+        sub_layout->addWidget(framebuffer_width_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Height:")));
+        sub_layout->addWidget(framebuffer_height_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Format:")));
+        sub_layout->addWidget(framebuffer_format_control);
+        main_layout->addLayout(sub_layout);
+    }
+    main_layout->addWidget(framebuffer_picture_label);
+    main_layout->addWidget(enlarge_button);
+    main_widget->setLayout(main_layout);
+    setWidget(main_widget);
+
+    // Load current data - TODO: Make sure this works when emulation is not running
+    emit Update();
+    widget()->setEnabled(false); // TODO: Only enable if currently at breakpoint
+}
+
+void GraphicsFramebufferWidget::OnBreakPointHit(Pica::DebugContext::Event event, void* data)
+{
+    emit Update();
+    widget()->setEnabled(true);
+}
+
+void GraphicsFramebufferWidget::OnResumed()
+{
+    widget()->setEnabled(false);
+}
+
+void GraphicsFramebufferWidget::OnFramebufferSourceChanged(int new_value)
+{
+    framebuffer_source = static_cast<Source>(new_value);
+    emit Update();
+}
+
+void GraphicsFramebufferWidget::OnFramebufferAddressChanged(qint64 new_value)
+{
+    if (framebuffer_address != new_value) {
+        framebuffer_address = static_cast<unsigned>(new_value);
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferWidthChanged(int new_value)
+{
+    if (framebuffer_width != new_value) {
+        framebuffer_width = new_value;
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferHeightChanged(int new_value)
+{
+    if (framebuffer_height != new_value) {
+        framebuffer_height = new_value;
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferFormatChanged(int new_value)
+{
+    if (framebuffer_format != static_cast<Format>(new_value)) {
+        framebuffer_format = static_cast<Format>(new_value);
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnUpdate()
+{
+    QPixmap pixmap;
+
+    switch (framebuffer_source) {
+    case Source::PicaTarget:
+    {
+        // TODO: Store a reference to the registers in the debug context instead of accessing them directly...
+
+        auto framebuffer = Pica::registers.framebuffer;
+        using Framebuffer = decltype(framebuffer);
+
+        framebuffer_address = framebuffer.GetColorBufferAddress();
+        framebuffer_width = framebuffer.GetWidth();
+        framebuffer_height = framebuffer.GetHeight();
+        framebuffer_format = static_cast<Format>(framebuffer.color_format);
+
+        break;
+    }
+
+    case Source::Custom:
+    {
+        // Keep user-specified values
+        break;
+    }
+
+    default:
+        qDebug() << "Unknown framebuffer source " << static_cast<int>(framebuffer_source);
+        break;
+    }
+
+    switch (framebuffer_format) {
+    case Format::RGBA8:
+    {
+        // TODO: Implement a good way to visualize the alpha component
+
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u32* color_buffer = (u32*)Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u32 value = *(color_buffer + x + y * framebuffer_width);
+
+                decoded_image.setPixel(x, y, qRgba((value >> 16) & 0xFF, (value >> 8) & 0xFF, value & 0xFF, 255/*value >> 24*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    case Format::RGB8:
+    {
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u8* color_buffer = Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u8* pixel_pointer = color_buffer + x * 3 + y * 3 * framebuffer_width;
+
+                decoded_image.setPixel(x, y, qRgba(pixel_pointer[0], pixel_pointer[1], pixel_pointer[2], 255/*value >> 24*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    case Format::RGBA5551:
+    {
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u32* color_buffer = (u32*)Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u16 value = *(u16*)(((u8*)color_buffer) + x * 2 + y * framebuffer_width * 2);
+                u8 r = (value >> 11) & 0x1F;
+                u8 g = (value >> 6) & 0x1F;
+                u8 b = (value >> 1) & 0x1F;
+                u8 a = value & 1;
+
+                decoded_image.setPixel(x, y, qRgba(r, g, b, 255/*a*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    default:
+        qDebug() << "Unknown fb color format " << static_cast<int>(framebuffer_format);
+        break;
+    }
+
+    framebuffer_address_control->SetValue(framebuffer_address);
+    framebuffer_width_control->setValue(framebuffer_width);
+    framebuffer_height_control->setValue(framebuffer_height);
+    framebuffer_format_control->setCurrentIndex(static_cast<int>(framebuffer_format));
+    framebuffer_picture_label->setPixmap(pixmap);
+}