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Merge pull request #165 from neobrain/viewport-scaling

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Stretch emulation output to render window and be display density independent
This commit is contained in:
bunnei 2014-11-18 18:32:01 -05:00
commit 40acd63631
11 changed files with 284 additions and 86 deletions
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62
src/citra/emu_window/emu_window_glfw.cpp
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@ -2,6 +2,8 @@
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <GLFW/glfw3.h>
#include "common/common.h"
#include "video_core/video_core.h"
@ -10,22 +12,21 @@
#include "citra/emu_window/emu_window_glfw.h"
EmuWindow_GLFW* EmuWindow_GLFW::GetEmuWindow(GLFWwindow* win) {
return static_cast<EmuWindow_GLFW*>(glfwGetWindowUserPointer(win));
}
/// Called by GLFW when a key event occurs
void EmuWindow_GLFW::OnKeyEvent(GLFWwindow* win, int key, int scancode, int action, int mods) {
if (!VideoCore::g_emu_window) {
return;
}
int keyboard_id = ((EmuWindow_GLFW*)VideoCore::g_emu_window)->keyboard_id;
int keyboard_id = GetEmuWindow(win)->keyboard_id;
if (action == GLFW_PRESS) {
EmuWindow::KeyPressed({key, keyboard_id});
}
if (action == GLFW_RELEASE) {
} else if (action == GLFW_RELEASE) {
EmuWindow::KeyReleased({key, keyboard_id});
}
HID_User::PadUpdateComplete();
}
@ -34,6 +35,23 @@ const bool EmuWindow_GLFW::IsOpen() {
return glfwWindowShouldClose(m_render_window) == 0;
}
void EmuWindow_GLFW::OnFramebufferResizeEvent(GLFWwindow* win, int width, int height) {
_dbg_assert_(GUI, width > 0);
_dbg_assert_(GUI, height > 0);
GetEmuWindow(win)->NotifyFramebufferSizeChanged(std::pair<unsigned,unsigned>(width, height));
}
void EmuWindow_GLFW::OnClientAreaResizeEvent(GLFWwindow* win, int width, int height) {
_dbg_assert_(GUI, width > 0);
_dbg_assert_(GUI, height > 0);
// NOTE: GLFW provides no proper way to set a minimal window size.
// Hence, we just ignore the corresponding EmuWindow hint.
GetEmuWindow(win)->NotifyClientAreaSizeChanged(std::pair<unsigned,unsigned>(width, height));
}
/// EmuWindow_GLFW constructor
EmuWindow_GLFW::EmuWindow_GLFW() {
keyboard_id = KeyMap::NewDeviceId();
@ -51,18 +69,30 @@ EmuWindow_GLFW::EmuWindow_GLFW() {
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
std::string window_title = Common::StringFromFormat("Citra | %s-%s", Common::g_scm_branch, Common::g_scm_desc);
m_render_window = glfwCreateWindow(VideoCore::kScreenTopWidth,
(VideoCore::kScreenTopHeight + VideoCore::kScreenBottomHeight),
m_window_title.c_str(), NULL, NULL);
window_title.c_str(), NULL, NULL);
if (m_render_window == NULL) {
printf("Failed to create GLFW window! Exiting...");
exit(1);
}
// Setup callbacks
glfwSetWindowUserPointer(m_render_window, this);
// Notify base interface about window state
int width, height;
glfwGetFramebufferSize(m_render_window, &width, &height);
OnFramebufferResizeEvent(m_render_window, width, height);
glfwGetWindowSize(m_render_window, &width, &height);
OnClientAreaResizeEvent(m_render_window, width, height);
// Setup callbacks
glfwSetKeyCallback(m_render_window, OnKeyEvent);
glfwSetFramebufferSizeCallback(m_render_window, OnFramebufferResizeEvent);
glfwSetWindowSizeCallback(m_render_window, OnClientAreaResizeEvent);
DoneCurrent();
}
@ -110,3 +140,15 @@ void EmuWindow_GLFW::ReloadSetKeymaps() {
KeyMap::SetKeyMapping({Settings::values.pad_sup_key, keyboard_id}, HID_User::PAD_CIRCLE_UP);
KeyMap::SetKeyMapping({Settings::values.pad_sdown_key, keyboard_id}, HID_User::PAD_CIRCLE_DOWN);
}
void EmuWindow_GLFW::OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
std::pair<int,int> current_size;
glfwGetWindowSize(m_render_window, &current_size.first, &current_size.second);
_dbg_assert_(GUI, (int)minimal_size.first > 0 && (int)minimal_size.second > 0);
int new_width = std::max(current_size.first, (int)minimal_size.first);
int new_height = std::max(current_size.second, (int)minimal_size.second);
if (current_size != std::make_pair(new_width, new_height))
glfwSetWindowSize(m_render_window, new_width, new_height);
}

12
src/citra/emu_window/emu_window_glfw.h
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@ -4,10 +4,10 @@
#pragma once
#include <GLFW/glfw3.h>
#include "common/emu_window.h"
struct GLFWwindow;
class EmuWindow_GLFW : public EmuWindow {
public:
EmuWindow_GLFW();
@ -30,9 +30,17 @@ public:
/// Whether the window is still open, and a close request hasn't yet been sent
const bool IsOpen();
static void OnClientAreaResizeEvent(GLFWwindow* win, int width, int height);
static void OnFramebufferResizeEvent(GLFWwindow* win, int width, int height);
void ReloadSetKeymaps() override;
private:
void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) override;
static EmuWindow_GLFW* GetEmuWindow(GLFWwindow* win);
GLFWwindow* m_render_window; ///< Internal GLFW render window
/// Device id of keyboard for use with KeyMap

74
src/citra_qt/bootmanager.cpp
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@ -2,6 +2,12 @@
#include <QKeyEvent>
#include <QApplication>
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
// Required for screen DPI information
#include <QScreen>
#include <QWindow>
#endif
#include "common/common.h"
#include "bootmanager.hxx"
@ -82,20 +88,20 @@ void EmuThread::Stop()
class GGLWidgetInternal : public QGLWidget
{
public:
GGLWidgetInternal(QGLFormat fmt, GRenderWindow* parent) : QGLWidget(fmt, parent)
{
parent_ = parent;
GGLWidgetInternal(QGLFormat fmt, GRenderWindow* parent)
: QGLWidget(fmt, parent), parent(parent) {
}
void paintEvent(QPaintEvent* ev) override
{
void paintEvent(QPaintEvent* ev) override {
}
void resizeEvent(QResizeEvent* ev) override {
parent_->SetClientAreaWidth(size().width());
parent_->SetClientAreaHeight(size().height());
parent->OnClientAreaResized(ev->size().width(), ev->size().height());
parent->OnFramebufferSizeChanged();
}
private:
GRenderWindow* parent_;
GRenderWindow* parent;
};
EmuThread& GRenderWindow::GetEmuThread()
@ -105,6 +111,9 @@ EmuThread& GRenderWindow::GetEmuThread()
GRenderWindow::GRenderWindow(QWidget* parent) : QWidget(parent), emu_thread(this), keyboard_id(0)
{
std::string window_title = Common::StringFromFormat("Citra | %s-%s", Common::g_scm_branch, Common::g_scm_desc);
setWindowTitle(QString::fromStdString(window_title));
keyboard_id = KeyMap::NewDeviceId();
ReloadSetKeymaps();
@ -121,9 +130,18 @@ GRenderWindow::GRenderWindow(QWidget* parent) : QWidget(parent), emu_thread(this
layout->addWidget(child);
layout->setMargin(0);
setLayout(layout);
QObject::connect(&emu_thread, SIGNAL(started()), this, SLOT(moveContext()));
connect(&emu_thread, SIGNAL(started()), this, SLOT(moveContext()));
OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
OnFramebufferSizeChanged();
NotifyClientAreaSizeChanged(std::pair<unsigned,unsigned>(child->width(), child->height()));
BackupGeometry();
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
connect(this->windowHandle(), SIGNAL(screenChanged(QScreen*)), this, SLOT(OnFramebufferSizeChanged()));
#endif
}
void GRenderWindow::moveContext()
@ -166,14 +184,28 @@ void GRenderWindow::DoneCurrent()
}
void GRenderWindow::PollEvents() {
// TODO(ShizZy): Does this belong here? This is a reasonable place to update the window title
// from the main thread, but this should probably be in an event handler...
/*
static char title[128];
sprintf(title, "%s (FPS: %02.02f)", window_title_.c_str(),
video_core::g_renderer->current_fps());
setWindowTitle(title);
*/
}
// On Qt 5.0+, this correctly gets the size of the framebuffer (pixels).
//
// Older versions get the window size (density independent pixels),
// and hence, do not support DPI scaling ("retina" displays).
// The result will be a viewport that is smaller than the extent of the window.
void GRenderWindow::OnFramebufferSizeChanged()
{
// Screen changes potentially incur a change in screen DPI, hence we should update the framebuffer size
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
// windowHandle() might not be accessible until the window is displayed to screen.
auto pixel_ratio = windowHandle() ? (windowHandle()->screen()->devicePixelRatio()) : 1.0;
unsigned width = child->QPaintDevice::width() * pixel_ratio;
unsigned height = child->QPaintDevice::height() * pixel_ratio;
#else
unsigned width = child->QPaintDevice::width();
unsigned height = child->QPaintDevice::height();
#endif
NotifyFramebufferSizeChanged(std::make_pair(width, height));
}
void GRenderWindow::BackupGeometry()
@ -236,3 +268,11 @@ void GRenderWindow::ReloadSetKeymaps()
KeyMap::SetKeyMapping({Settings::values.pad_sdown_key, keyboard_id}, HID_User::PAD_CIRCLE_DOWN);
}
void GRenderWindow::OnClientAreaResized(unsigned width, unsigned height)
{
NotifyClientAreaSizeChanged(std::make_pair(width, height));
}
void GRenderWindow::OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
setMinimumSize(minimal_size.first, minimal_size.second);
}

18
src/citra_qt/bootmanager.hxx
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@ -1,12 +1,16 @@
#include <atomic>
#include <QThread>
#include <QGLWidget>
#include <atomic>
#include "common/common.h"
#include "common/emu_window.h"
class GRenderWindow;
class QScreen;
class QKeyEvent;
class GRenderWindow;
class EmuThread : public QThread
{
Q_OBJECT
@ -100,7 +104,7 @@ public:
void BackupGeometry();
void RestoreGeometry();
void restoreGeometry(const QByteArray& geometry); // overridden
QByteArray saveGeometry(); // overridden
QByteArray saveGeometry(); // overridden
EmuThread& GetEmuThread();
@ -109,10 +113,16 @@ public:
void ReloadSetKeymaps() override;
void OnClientAreaResized(unsigned width, unsigned height);
void OnFramebufferSizeChanged();
public slots:
void moveContext();
void moveContext(); // overridden
private:
void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) override;
QGLWidget* child;
EmuThread emu_thread;

3
src/citra_qt/main.cpp
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@ -117,7 +117,8 @@ GMainWindow::GMainWindow()
connect(GetHotkey("Main Window", "Load File", this), SIGNAL(activated()), this, SLOT(OnMenuLoadFile()));
connect(GetHotkey("Main Window", "Start Emulation", this), SIGNAL(activated()), this, SLOT(OnStartGame()));
setWindowTitle(render_window->GetWindowTitle().c_str());
std::string window_title = Common::StringFromFormat("Citra | %s-%s", Common::g_scm_branch, Common::g_scm_desc);
setWindowTitle(window_title.c_str());
show();

132
src/common/emu_window.h
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@ -9,17 +9,33 @@
#include "common/string_util.h"
#include "common/key_map.h"
// Abstraction class used to provide an interface between emulation code and the frontend (e.g. SDL,
// QGLWidget, GLFW, etc...)
/**
* Abstraction class used to provide an interface between emulation code and the frontend
* (e.g. SDL, QGLWidget, GLFW, etc...).
*
* Design notes on the interaction between EmuWindow and the emulation core:
* - Generally, decisions on anything visible to the user should be left up to the GUI.
* For example, the emulation core should not try to dictate some window title or size.
* This stuff is not the core's business and only causes problems with regards to thread-safety
* anyway.
* - Under certain circumstances, it may be desirable for the core to politely request the GUI
* to set e.g. a minimum window size. However, the GUI should always be free to ignore any
* such hints.
* - EmuWindow may expose some of its state as read-only to the emulation core, however care
* should be taken to make sure the provided information is self-consistent. This requires
* some sort of synchronization (most of this is still a TODO).
* - DO NOT TREAT THIS CLASS AS A GUI TOOLKIT ABSTRACTION LAYER. That's not what it is. Please
* re-read the upper points again and think about it if you don't see this.
*/
class EmuWindow
{
public:
/// Data structure to store an emuwindow configuration
/// Data structure to store emuwindow configuration
struct WindowConfig {
bool fullscreen;
int res_width;
int res_height;
std::pair<unsigned,unsigned> min_client_area_size;
};
/// Swap buffers to display the next frame
@ -42,52 +58,96 @@ public:
/// Signals a key release action to the HID module
static void KeyReleased(KeyMap::HostDeviceKey key);
WindowConfig GetConfig() const {
return m_config;
/**
* Returns currently active configuration.
* @note Accesses to the returned object need not be consistent because it may be modified in another thread
*/
const WindowConfig& GetActiveConfig() const {
return active_config;
}
/**
* Requests the internal configuration to be replaced by the specified argument at some point in the future.
* @note This method is thread-safe, because it delays configuration changes to the GUI event loop. Hence there is no guarantee on when the requested configuration will be active.
*/
void SetConfig(const WindowConfig& val) {
m_config = val;
config = val;
}
int GetClientAreaWidth() const {
return m_client_area_width;
/**
* Gets the framebuffer size in pixels.
* @note This method is thread-safe
*/
const std::pair<unsigned,unsigned> GetFramebufferSize() const {
return framebuffer_size;
}
void SetClientAreaWidth(const int val) {
m_client_area_width = val;
}
int GetClientAreaHeight() const {
return m_client_area_height;
}
void SetClientAreaHeight(const int val) {
m_client_area_height = val;
}
std::string GetWindowTitle() const {
return m_window_title;
}
void SetWindowTitle(std::string val) {
m_window_title = val;
/**
* Gets window client area width in logical coordinates.
* @note For high-DPI systems, this is smaller than the framebuffer size.
* @note This method is thread-safe
*/
std::pair<unsigned,unsigned> GetClientAreaSize() const {
return std::make_pair(client_area_width, client_area_height);
}
protected:
EmuWindow():
m_window_title(Common::StringFromFormat("Citra | %s-%s", Common::g_scm_branch, Common::g_scm_desc)),
m_client_area_width(640),
m_client_area_height(480)
{}
EmuWindow()
{
// TODO: Find a better place to set this.
config.min_client_area_size = std::make_pair(400u, 480u);
active_config = config;
}
virtual ~EmuWindow() {}
std::string m_window_title; ///< Current window title, should be used by window impl.
/**
* Processes any pending configuration changes from the last SetConfig call.
* This method invokes OnMinimalClientAreaChangeRequest if the corresponding configuration
* field changed.
* @note Implementations will usually want to call this from the GUI thread.
* @todo Actually call this in existing implementations.
*/
void ProcessConfigurationChanges() {
// TODO: For proper thread safety, we should eventually implement a proper
// multiple-writer/single-reader queue...
int m_client_area_width; ///< Current client width, should be set by window impl.
int m_client_area_height; ///< Current client height, should be set by window impl.
if (config.min_client_area_size != active_config.min_client_area_size) {
OnMinimalClientAreaChangeRequest(config.min_client_area_size);
config.min_client_area_size = active_config.min_client_area_size;
}
}
/**
* Update internal framebuffer size with the given parameter.
* @note EmuWindow implementations will usually use this in window resize event handlers.
*/
void NotifyFramebufferSizeChanged(const std::pair<unsigned,unsigned>& size) {
framebuffer_size = size;
}
/**
* Update internal client area size with the given parameter.
* @note EmuWindow implementations will usually use this in window resize event handlers.
*/
void NotifyClientAreaSizeChanged(const std::pair<unsigned,unsigned>& size) {
client_area_width = size.first;
client_area_height = size.second;
}
private:
WindowConfig m_config; ///< Internal configuration
/**
* Handler called when the minimal client area was requested to be changed via SetConfig.
* For the request to be honored, EmuWindow implementations will usually reimplement this function.
*/
virtual void OnMinimalClientAreaChangeRequest(const std::pair<unsigned,unsigned>& minimal_size) {
// By default, ignore this request and do nothing.
}
std::pair<unsigned,unsigned> framebuffer_size;
unsigned client_area_width; ///< Current client width, should be set by window impl.
unsigned client_area_height; ///< Current client height, should be set by window impl.
WindowConfig config; ///< Internal configuration (changes pending for being applied in ProcessConfigurationChanges)
WindowConfig active_config; ///< Internal active configuration
};

1
src/common/log.h
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@ -69,6 +69,7 @@ enum LOG_TYPE {
HW,
TIME,
NETPLAY,
GUI,
NUMBER_OF_LOGS // Must be last
};

1
src/common/log_manager.cpp
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@ -75,6 +75,7 @@ LogManager::LogManager()
m_Log[LogTypes::ACTIONREPLAY] = new LogContainer("ActionReplay", "ActionReplay");
m_Log[LogTypes::MEMCARD_MANAGER] = new LogContainer("MemCard Manager", "MemCard Manager");
m_Log[LogTypes::NETPLAY] = new LogContainer("NETPLAY", "Netplay");
m_Log[LogTypes::GUI] = new LogContainer("GUI", "GUI");
m_fileLog = new FileLogListener(FileUtil::GetUserPath(F_MAINLOG_IDX).c_str());
m_consoleLog = new ConsoleListener();

5
src/common/math_util.h
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@ -7,6 +7,7 @@
#include "common/common.h"
#include <algorithm>
#include <type_traits>
#include <vector>
namespace MathUtil
@ -112,8 +113,8 @@ struct Rectangle
bool operator==(const Rectangle& r) { return left==r.left && top==r.top && right==r.right && bottom==r.bottom; }
T GetWidth() const { return abs(right - left); }
T GetHeight() const { return abs(bottom - top); }
T GetWidth() const { return std::abs(static_cast<typename std::make_signed<T>::type>(right - left)); }
T GetHeight() const { return std::abs(static_cast<typename std::make_signed<T>::type>(bottom - top)); }
// If the rectangle is in a coordinate system with a lower-left origin, use
// this Clamp.

31
src/video_core/renderer_opengl/renderer_opengl.cpp
View File

@ -191,7 +191,8 @@ void RendererOpenGL::DrawSingleScreenRotated(const TextureInfo& texture, float x
* Draws the emulated screens to the emulator window.
*/
void RendererOpenGL::DrawScreens() {
glViewport(0, 0, resolution_width, resolution_height);
auto viewport_extent = GetViewportExtent();
glViewport(viewport_extent.left, viewport_extent.top, viewport_extent.GetWidth(), viewport_extent.GetHeight()); // TODO: Or bottom?
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(program_id);
@ -228,6 +229,34 @@ void RendererOpenGL::SetWindow(EmuWindow* window) {
render_window = window;
}
MathUtil::Rectangle<unsigned> RendererOpenGL::GetViewportExtent() {
unsigned framebuffer_width;
unsigned framebuffer_height;
std::tie(framebuffer_width, framebuffer_height) = render_window->GetFramebufferSize();
float window_aspect_ratio = static_cast<float>(framebuffer_height) / framebuffer_width;
float emulation_aspect_ratio = static_cast<float>(resolution_height) / resolution_width;
MathUtil::Rectangle<unsigned> viewport_extent;
if (window_aspect_ratio > emulation_aspect_ratio) {
// Window is narrower than the emulation content => apply borders to the top and bottom
unsigned viewport_height = emulation_aspect_ratio * framebuffer_width;
viewport_extent.left = 0;
viewport_extent.top = (framebuffer_height - viewport_height) / 2;
viewport_extent.right = viewport_extent.left + framebuffer_width;
viewport_extent.bottom = viewport_extent.top + viewport_height;
} else {
// Otherwise, apply borders to the left and right sides of the window.
unsigned viewport_width = framebuffer_height / emulation_aspect_ratio;
viewport_extent.left = (framebuffer_width - viewport_width) / 2;
viewport_extent.top = 0;
viewport_extent.right = viewport_extent.left + viewport_width;
viewport_extent.bottom = viewport_extent.top + framebuffer_height;
}
return viewport_extent;
}
/// Initialize the renderer
void RendererOpenGL::Init() {
render_window->MakeCurrent();

13
src/video_core/renderer_opengl/renderer_opengl.h
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@ -4,13 +4,15 @@
#pragma once
#include <array>
#include "generated/gl_3_2_core.h"
#include "common/common.h"
#include "core/hw/gpu.h"
#include "video_core/renderer_base.h"
#include "common/math_util.h"
#include <array>
#include "core/hw/gpu.h"
#include "video_core/renderer_base.h"
class EmuWindow;
@ -52,6 +54,9 @@ private:
static void LoadFBToActiveGLTexture(const GPU::Regs::FramebufferConfig& framebuffer,
const TextureInfo& texture);
/// Computes the viewport rectangle
MathUtil::Rectangle<unsigned> GetViewportExtent();
EmuWindow* render_window; ///< Handle to render window
u32 last_mode; ///< Last render mode