mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-14 23:22:52 +00:00
addbcd42d7
Since we operate in screen space where y points down we need to reverse what is considered clock wise and what is considered counter clockwise. The rasterizer always expects triangles with a consistent winding order thus swap 2 vertices if necessary to reverse the winding before passing the triangle on to the rasterization stage.
462 lines
16 KiB
C++
462 lines
16 KiB
C++
/*
|
|
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibCore/ElapsedTimer.h>
|
|
#include <LibCore/File.h>
|
|
#include <LibGL/GL/gl.h>
|
|
#include <LibGL/GLContext.h>
|
|
#include <LibGUI/ActionGroup.h>
|
|
#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>
|
|
#include <LibGUI/Painter.h>
|
|
#include <LibGUI/Widget.h>
|
|
#include <LibGUI/Window.h>
|
|
#include <LibGfx/Bitmap.h>
|
|
#include <LibGfx/Palette.h>
|
|
#include <unistd.h>
|
|
|
|
#include "Mesh.h"
|
|
#include "WavefrontOBJLoader.h"
|
|
|
|
static constexpr u16 RENDER_WIDTH = 640;
|
|
static constexpr u16 RENDER_HEIGHT = 480;
|
|
|
|
class GLContextWidget final : public GUI::Frame {
|
|
C_OBJECT(GLContextWidget);
|
|
|
|
public:
|
|
bool load(const String& fname);
|
|
void toggle_rotate_x() { m_rotate_x = !m_rotate_x; }
|
|
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 set_wrap_s_mode(GLint mode) { m_wrap_s_mode = mode; }
|
|
void set_wrap_t_mode(GLint mode) { m_wrap_t_mode = mode; }
|
|
void set_texture_scale(float scale) { m_texture_scale = scale; }
|
|
void set_mag_filter(GLint filter) { m_mag_filter = filter; }
|
|
|
|
void toggle_show_frame_rate()
|
|
{
|
|
m_show_frame_rate = !m_show_frame_rate;
|
|
m_stats->set_visible(m_show_frame_rate);
|
|
}
|
|
|
|
private:
|
|
GLContextWidget()
|
|
: m_mesh_loader(adopt_own(*new WavefrontOBJLoader()))
|
|
{
|
|
m_bitmap = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { RENDER_WIDTH, RENDER_HEIGHT });
|
|
m_context = GL::create_context(*m_bitmap);
|
|
|
|
start_timer(20);
|
|
|
|
GL::make_context_current(m_context);
|
|
glFrontFace(GL_CCW);
|
|
glEnable(GL_CULL_FACE);
|
|
glEnable(GL_DEPTH_TEST);
|
|
|
|
// Set projection matrix
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glFrustum(-0.5, 0.5, -0.5, 0.5, 1, 1500);
|
|
|
|
m_init_list = glGenLists(1);
|
|
glNewList(m_init_list, GL_COMPILE);
|
|
{
|
|
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
|
|
glClearDepth(1.0);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
}
|
|
glEndList();
|
|
}
|
|
|
|
virtual void paint_event(GUI::PaintEvent&) override;
|
|
virtual void timer_event(Core::TimerEvent&) override;
|
|
virtual void mousemove_event(GUI::MouseEvent&) override;
|
|
virtual void mousewheel_event(GUI::MouseEvent&) override;
|
|
|
|
private:
|
|
RefPtr<Mesh> m_mesh;
|
|
RefPtr<Gfx::Bitmap> m_bitmap;
|
|
OwnPtr<GL::GLContext> m_context;
|
|
NonnullOwnPtr<WavefrontOBJLoader> m_mesh_loader;
|
|
GLuint m_init_list { 0 };
|
|
bool m_rotate_x = true;
|
|
bool m_rotate_y = false;
|
|
bool m_rotate_z = true;
|
|
float m_angle_x = 0.0;
|
|
float m_angle_y = 0.0;
|
|
float m_angle_z = 0.0;
|
|
Gfx::IntPoint m_last_mouse;
|
|
float m_rotation_speed = 60.f;
|
|
bool m_show_frame_rate = false;
|
|
int m_cycles = 0;
|
|
int m_accumulated_time = 0;
|
|
RefPtr<GUI::Label> m_stats;
|
|
GLint m_wrap_s_mode = GL_REPEAT;
|
|
GLint m_wrap_t_mode = GL_REPEAT;
|
|
float m_texture_scale = 1.0f;
|
|
GLint m_mag_filter = GL_NEAREST;
|
|
float m_zoom = 1;
|
|
};
|
|
|
|
void GLContextWidget::paint_event(GUI::PaintEvent& event)
|
|
{
|
|
GUI::Frame::paint_event(event);
|
|
|
|
GUI::Painter painter(*this);
|
|
painter.add_clip_rect(event.rect());
|
|
painter.draw_scaled_bitmap(frame_inner_rect(), *m_bitmap, m_bitmap->rect());
|
|
}
|
|
|
|
void GLContextWidget::mousemove_event(GUI::MouseEvent& event)
|
|
{
|
|
if (event.buttons() == GUI::MouseButton::Left) {
|
|
int delta_x = m_last_mouse.x() - event.x();
|
|
int delta_y = m_last_mouse.y() - event.y();
|
|
|
|
m_angle_x -= delta_y / 2.0f;
|
|
m_angle_y -= delta_x / 2.0f;
|
|
}
|
|
|
|
m_last_mouse = event.position();
|
|
}
|
|
|
|
void GLContextWidget::mousewheel_event(GUI::MouseEvent& event)
|
|
{
|
|
if (event.wheel_delta() > 0)
|
|
m_zoom /= 1.1f;
|
|
else
|
|
m_zoom *= 1.1f;
|
|
}
|
|
|
|
void GLContextWidget::timer_event(Core::TimerEvent&)
|
|
{
|
|
Core::ElapsedTimer timer;
|
|
timer.start();
|
|
|
|
glCallList(m_init_list);
|
|
|
|
if (m_rotate_x)
|
|
m_angle_x -= m_rotation_speed * 0.01f;
|
|
if (m_rotate_y)
|
|
m_angle_y -= m_rotation_speed * 0.01f;
|
|
if (m_rotate_z)
|
|
m_angle_z -= m_rotation_speed * 0.01f;
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
glTranslatef(0, 0, -8.5);
|
|
glRotatef(m_angle_x, 1, 0, 0);
|
|
glRotatef(m_angle_y, 0, 1, 0);
|
|
glRotatef(m_angle_z, 0, 0, 1);
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, m_wrap_s_mode);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, m_wrap_t_mode);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, m_mag_filter);
|
|
glScalef(m_zoom, m_zoom, m_zoom);
|
|
|
|
if (!m_mesh.is_null())
|
|
m_mesh->draw(m_texture_scale);
|
|
|
|
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)
|
|
{
|
|
auto file = Core::File::construct(filename);
|
|
|
|
if (!file->filename().ends_with(".obj")) {
|
|
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: invalid file type", filename), "Error", GUI::MessageBox::Type::Error);
|
|
return false;
|
|
}
|
|
|
|
if (!file->open(Core::OpenMode::ReadOnly) && file->error() != ENOENT) {
|
|
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", filename, strerror(errno)), "Error", GUI::MessageBox::Type::Error);
|
|
return false;
|
|
}
|
|
|
|
if (file->is_device()) {
|
|
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: Can't open device files", filename), "Error", GUI::MessageBox::Type::Error);
|
|
return false;
|
|
}
|
|
|
|
if (file->is_directory()) {
|
|
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: Can't open directories", filename), "Error", GUI::MessageBox::Type::Error);
|
|
return false;
|
|
}
|
|
|
|
auto new_mesh = m_mesh_loader->load(file);
|
|
if (new_mesh.is_null()) {
|
|
GUI::MessageBox::show(window(), String::formatted("Reading \"{}\" failed.", filename), "Error", GUI::MessageBox::Type::Error);
|
|
return false;
|
|
}
|
|
|
|
// Determine whether or not a texture for this model resides within the same directory
|
|
StringBuilder builder;
|
|
builder.append(filename.split('.').at(0));
|
|
builder.append(".bmp");
|
|
|
|
// Attempt to open the texture file from disk
|
|
auto texture_image = Gfx::Bitmap::try_load_from_file(builder.string_view());
|
|
|
|
GLuint tex;
|
|
glGenTextures(1, &tex);
|
|
if (texture_image) {
|
|
// Upload texture data to the GL
|
|
glBindTexture(GL_TEXTURE_2D, tex);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, texture_image->width(), texture_image->height(), 0, GL_BGRA, GL_UNSIGNED_BYTE, texture_image->scanline(0));
|
|
} else {
|
|
dbgln("3DFileViewer: Couldn't load texture for {}", filename);
|
|
}
|
|
|
|
m_mesh = new_mesh;
|
|
dbgln("3DFileViewer: mesh has {} triangles.", m_mesh->triangle_count());
|
|
|
|
return true;
|
|
}
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
auto app = GUI::Application::construct(argc, argv);
|
|
|
|
if (pledge("stdio thread recvfd sendfd rpath", nullptr) < 0) {
|
|
perror("pledge");
|
|
return 1;
|
|
}
|
|
|
|
// Construct the main window
|
|
auto window = GUI::Window::construct();
|
|
auto app_icon = GUI::Icon::default_icon("app-3d-file-viewer");
|
|
window->set_icon(app_icon.bitmap_for_size(16));
|
|
window->set_title("3D File Viewer");
|
|
window->resize(640 + 4, 480 + 4);
|
|
window->set_resizable(false);
|
|
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) {
|
|
if (widget.load(filename)) {
|
|
auto canonical_path = Core::File::real_path_for(filename);
|
|
window->set_title(String::formatted("{} - 3D File Viewer", canonical_path));
|
|
}
|
|
};
|
|
|
|
file_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
|
|
Optional<String> open_path = GUI::FilePicker::get_open_filepath(window);
|
|
|
|
if (!open_path.has_value())
|
|
return;
|
|
|
|
load_model(open_path.value());
|
|
}));
|
|
file_menu.add_separator();
|
|
file_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
|
|
app->quit();
|
|
}));
|
|
|
|
auto& view_menu = window->add_menu("&View");
|
|
view_menu.add_action(GUI::CommonActions::make_fullscreen_action([&](auto&) {
|
|
window->set_fullscreen(!window->is_fullscreen());
|
|
}));
|
|
|
|
auto& rotation_axis_menu = view_menu.add_submenu("Rotation &Axis");
|
|
auto rotation_x_action = GUI::Action::create_checkable("&X", [&widget](auto&) {
|
|
widget.toggle_rotate_x();
|
|
});
|
|
auto rotation_y_action = GUI::Action::create_checkable("&Y", [&widget](auto&) {
|
|
widget.toggle_rotate_y();
|
|
});
|
|
auto rotation_z_action = GUI::Action::create_checkable("&Z", [&widget](auto&) {
|
|
widget.toggle_rotate_z();
|
|
});
|
|
|
|
rotation_axis_menu.add_action(*rotation_x_action);
|
|
rotation_axis_menu.add_action(*rotation_y_action);
|
|
rotation_axis_menu.add_action(*rotation_z_action);
|
|
|
|
rotation_x_action->set_checked(true);
|
|
rotation_z_action->set_checked(true);
|
|
|
|
auto& rotation_speed_menu = view_menu.add_submenu("Rotation &Speed");
|
|
GUI::ActionGroup rotation_speed_actions;
|
|
rotation_speed_actions.set_exclusive(true);
|
|
|
|
auto no_rotation_action = GUI::Action::create_checkable("N&o Rotation", [&widget](auto&) {
|
|
widget.set_rotation_speed(0.f);
|
|
});
|
|
auto slow_rotation_action = GUI::Action::create_checkable("&Slow", [&widget](auto&) {
|
|
widget.set_rotation_speed(30.f);
|
|
});
|
|
auto normal_rotation_action = GUI::Action::create_checkable("&Normal", [&widget](auto&) {
|
|
widget.set_rotation_speed(60.f);
|
|
});
|
|
auto fast_rotation_action = GUI::Action::create_checkable("&Fast", [&widget](auto&) {
|
|
widget.set_rotation_speed(90.f);
|
|
});
|
|
|
|
rotation_speed_actions.add_action(*no_rotation_action);
|
|
rotation_speed_actions.add_action(*slow_rotation_action);
|
|
rotation_speed_actions.add_action(*normal_rotation_action);
|
|
rotation_speed_actions.add_action(*fast_rotation_action);
|
|
|
|
rotation_speed_menu.add_action(*no_rotation_action);
|
|
rotation_speed_menu.add_action(*slow_rotation_action);
|
|
rotation_speed_menu.add_action(*normal_rotation_action);
|
|
rotation_speed_menu.add_action(*fast_rotation_action);
|
|
|
|
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& texture_menu = window->add_menu("&Texture");
|
|
|
|
auto& wrap_u_menu = texture_menu.add_submenu("Wrap &S");
|
|
GUI::ActionGroup wrap_s_actions;
|
|
wrap_s_actions.set_exclusive(true);
|
|
|
|
auto wrap_u_repeat_action = GUI::Action::create_checkable("&Repeat", [&widget](auto&) {
|
|
widget.set_wrap_s_mode(GL_REPEAT);
|
|
});
|
|
auto wrap_u_mirrored_repeat_action = GUI::Action::create_checkable("&Mirrored Repeat", [&widget](auto&) {
|
|
widget.set_wrap_s_mode(GL_MIRRORED_REPEAT);
|
|
});
|
|
auto wrap_u_clamp_action = GUI::Action::create_checkable("&Clamp", [&widget](auto&) {
|
|
widget.set_wrap_s_mode(GL_CLAMP);
|
|
});
|
|
|
|
wrap_s_actions.add_action(*wrap_u_repeat_action);
|
|
wrap_s_actions.add_action(*wrap_u_mirrored_repeat_action);
|
|
wrap_s_actions.add_action(*wrap_u_clamp_action);
|
|
|
|
wrap_u_menu.add_action(*wrap_u_repeat_action);
|
|
wrap_u_menu.add_action(*wrap_u_mirrored_repeat_action);
|
|
wrap_u_menu.add_action(*wrap_u_clamp_action);
|
|
|
|
wrap_u_repeat_action->set_checked(true);
|
|
|
|
auto& wrap_t_menu = texture_menu.add_submenu("Wrap &T");
|
|
GUI::ActionGroup wrap_t_actions;
|
|
wrap_t_actions.set_exclusive(true);
|
|
|
|
auto wrap_t_repeat_action = GUI::Action::create_checkable("&Repeat", [&widget](auto&) {
|
|
widget.set_wrap_t_mode(GL_REPEAT);
|
|
});
|
|
auto wrap_t_mirrored_repeat_action = GUI::Action::create_checkable("&Mirrored Repeat", [&widget](auto&) {
|
|
widget.set_wrap_t_mode(GL_MIRRORED_REPEAT);
|
|
});
|
|
auto wrap_t_clamp_action = GUI::Action::create_checkable("&Clamp", [&widget](auto&) {
|
|
widget.set_wrap_t_mode(GL_CLAMP);
|
|
});
|
|
|
|
wrap_t_actions.add_action(*wrap_t_repeat_action);
|
|
wrap_t_actions.add_action(*wrap_t_mirrored_repeat_action);
|
|
wrap_t_actions.add_action(*wrap_t_clamp_action);
|
|
|
|
wrap_t_menu.add_action(*wrap_t_repeat_action);
|
|
wrap_t_menu.add_action(*wrap_t_mirrored_repeat_action);
|
|
wrap_t_menu.add_action(*wrap_t_clamp_action);
|
|
|
|
wrap_t_repeat_action->set_checked(true);
|
|
|
|
auto& texture_scale_menu = texture_menu.add_submenu("S&cale");
|
|
GUI::ActionGroup texture_scale_actions;
|
|
texture_scale_actions.set_exclusive(true);
|
|
|
|
auto texture_scale_025_action = GUI::Action::create_checkable("0.25x", [&widget](auto&) {
|
|
widget.set_texture_scale(0.25f);
|
|
});
|
|
|
|
auto texture_scale_05_action = GUI::Action::create_checkable("0.5x", [&widget](auto&) {
|
|
widget.set_texture_scale(0.5f);
|
|
});
|
|
|
|
auto texture_scale_1_action = GUI::Action::create_checkable("1x", [&widget](auto&) {
|
|
widget.set_texture_scale(1);
|
|
});
|
|
|
|
auto texture_scale_2_action = GUI::Action::create_checkable("2x", [&widget](auto&) {
|
|
widget.set_texture_scale(2);
|
|
});
|
|
|
|
auto texture_scale_4_action = GUI::Action::create_checkable("4x", [&widget](auto&) {
|
|
widget.set_texture_scale(4);
|
|
});
|
|
|
|
texture_scale_actions.add_action(*texture_scale_025_action);
|
|
texture_scale_actions.add_action(*texture_scale_05_action);
|
|
texture_scale_actions.add_action(*texture_scale_1_action);
|
|
texture_scale_actions.add_action(*texture_scale_2_action);
|
|
texture_scale_actions.add_action(*texture_scale_4_action);
|
|
|
|
texture_scale_menu.add_action(*texture_scale_025_action);
|
|
texture_scale_menu.add_action(*texture_scale_05_action);
|
|
texture_scale_menu.add_action(*texture_scale_1_action);
|
|
texture_scale_menu.add_action(*texture_scale_2_action);
|
|
texture_scale_menu.add_action(*texture_scale_4_action);
|
|
|
|
texture_scale_1_action->set_checked(true);
|
|
|
|
auto& texture_mag_filter_menu = texture_menu.add_submenu("Mag Filter");
|
|
GUI::ActionGroup texture_mag_filter_actions;
|
|
texture_mag_filter_actions.set_exclusive(true);
|
|
|
|
auto texture_mag_filter_nearest_action = GUI::Action::create_checkable("&Nearest", [&widget](auto&) {
|
|
widget.set_mag_filter(GL_NEAREST);
|
|
});
|
|
|
|
auto texture_mag_filter_linear_action = GUI::Action::create_checkable("&Linear", [&widget](auto&) {
|
|
widget.set_mag_filter(GL_LINEAR);
|
|
});
|
|
|
|
texture_mag_filter_actions.add_action(*texture_mag_filter_nearest_action);
|
|
texture_mag_filter_actions.add_action(*texture_mag_filter_linear_action);
|
|
|
|
texture_mag_filter_menu.add_action(*texture_mag_filter_nearest_action);
|
|
texture_mag_filter_menu.add_action(*texture_mag_filter_linear_action);
|
|
|
|
texture_mag_filter_nearest_action->set_checked(true);
|
|
|
|
auto& help_menu = window->add_menu("&Help");
|
|
help_menu.add_action(GUI::CommonActions::make_about_action("3D File Viewer", app_icon, window));
|
|
|
|
window->show();
|
|
|
|
auto filename = argc > 1 ? argv[1] : "/home/anon/Documents/3D Models/teapot.obj";
|
|
load_model(filename);
|
|
|
|
return app->exec();
|
|
}
|