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3DFileViewer: Display frame rate optionally

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It is turned off by default
This commit is contained in:
K-Adam 2021-08-01 17:24:57 +02:00 committed by Gunnar Beutner
parent feacf774fb
commit 9758ba5678
Notes: sideshowbarker 2024-07-18 07:38:31 +09:00 
Author: https://github.com/K-Adam
Commit: https://github.com/SerenityOS/serenity/commit/9758ba5678c
Pull-request: https://github.com/SerenityOS/serenity/pull/9122
Reviewed-by: https://github.com/gunnarbeutner
1 changed files with 41 additions and 0 deletions
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41
Userland/Applications/3DFileViewer/main.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ElapsedTimer.h>
#include <LibCore/File.h>
#include <LibGL/GL/gl.h>
#include <LibGL/GLContext.h>
@ -11,6 +12,7 @@
#include <LibGUI/Application.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/MessageBox.h>
@ -18,6 +20,7 @@
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Palette.h>
#include <unistd.h>
#include "Mesh.h"
@ -35,6 +38,13 @@ public:
void toggle_rotate_y() { m_rotate_y = !m_rotate_y; }
void toggle_rotate_z() { m_rotate_z = !m_rotate_z; }
void set_rotation_speed(float speed) { m_rotation_speed = speed; }
void set_stat_label(RefPtr<GUI::Label> l) { m_stats = l; };
void toggle_show_frame_rate()
{
m_show_frame_rate = !m_show_frame_rate;
m_stats->set_visible(m_show_frame_rate);
}
private:
GLContextWidget()
@ -83,6 +93,10 @@ private:
float m_angle_z = 0.0;
Gfx::IntPoint m_last_mouse;
float m_rotation_speed = 1.f;
bool m_show_frame_rate = false;
int m_cycles = 0;
int m_accumulated_time = 0;
RefPtr<GUI::Label> m_stats;
};
void GLContextWidget::paint_event(GUI::PaintEvent& event)
@ -109,6 +123,9 @@ void GLContextWidget::mousemove_event(GUI::MouseEvent& event)
void GLContextWidget::timer_event(Core::TimerEvent&)
{
Core::ElapsedTimer timer;
timer.start();
glCallList(m_init_list);
if (m_rotate_x)
@ -128,7 +145,18 @@ void GLContextWidget::timer_event(Core::TimerEvent&)
m_mesh->draw();
m_context->present();
if ((m_cycles % 30) == 0) {
int render_time = m_accumulated_time / 30;
int frame_rate = render_time > 0 ? 1000 / render_time : 0;
m_stats->set_text(String::formatted("{} fps, {} ms", frame_rate, render_time));
m_accumulated_time = 0;
}
update();
m_accumulated_time += timer.elapsed();
m_cycles++;
}
bool GLContextWidget::load(const String& filename)
@ -204,6 +232,13 @@ int main(int argc, char** argv)
window->set_double_buffering_enabled(true);
auto& widget = window->set_main_widget<GLContextWidget>();
auto& time = widget.add<GUI::Label>();
time.set_visible(false);
time.set_foreground_role(ColorRole::HoverHighlight);
time.set_relative_rect({ 0, 8, 86, 10 });
time.move_by({ window->width() - time.width(), 0 });
widget.set_stat_label(time);
auto& file_menu = window->add_menu("&File");
auto load_model = [&](StringView const& filename) {
@ -278,6 +313,12 @@ int main(int argc, char** argv)
normal_rotation_action->set_checked(true);
auto show_frame_rate_action = GUI::Action::create_checkable("Show Frame &Rate", [&widget](auto&) {
widget.toggle_show_frame_rate();
});
view_menu.add_action(*show_frame_rate_action);
auto& help_menu = window->add_menu("&Help");
help_menu.add_action(GUI::CommonActions::make_about_action("3D File Viewer", app_icon, window));