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3DFileViewer: Replace lambertian lighting with GL Lighting

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This commit is contained in:
Jesse Buhagiar 2022-01-10 01:13:33 +11:00 • committed by Linus Groh
parent 9aae648482
commit b397db9948
2 changed files with 39 additions and 13 deletions
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36
Userland/Applications/3DFileViewer/main.cpp
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@ -69,6 +69,12 @@ private:
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
// Enable lighting
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
// Set projection matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
@ -159,6 +165,7 @@ void GLContextWidget::mousewheel_event(GUI::MouseEvent& event)
void GLContextWidget::timer_event(Core::TimerEvent&)
{
auto timer = Core::ElapsedTimer::start_new();
static unsigned int light_counter = 0;
glCallList(m_init_list);
@ -175,6 +182,23 @@ void GLContextWidget::timer_event(Core::TimerEvent&)
glRotatef(m_angle_y, 0, 1, 0);
glRotatef(m_angle_z, 0, 0, 1);
glPushMatrix();
glLoadIdentity();
// Disco time ;)
GLfloat const light0_position[4] = { -4.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light0_diffuse[4] = { 1.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light1_position[4] = { 4.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light1_diffuse[4] = { 0.0f, 1.0f, 0.0f, 0.0f };
GLfloat const light2_position[4] = { 0.0f, 5.0f, 0.0f, 0.0f };
GLfloat const light2_diffuse[4] = { 0.0f, 0.0f, 1.0f, 0.0f };
glLightfv(GL_LIGHT0, GL_POSITION, &light0_position[0]);
glLightfv(GL_LIGHT0, GL_DIFFUSE, &light0_diffuse[0]);
glLightfv(GL_LIGHT1, GL_POSITION, &light1_position[0]);
glLightfv(GL_LIGHT1, GL_DIFFUSE, &light1_diffuse[0]);
glLightfv(GL_LIGHT2, GL_POSITION, &light2_position[0]);
glLightfv(GL_LIGHT2, GL_DIFFUSE, &light2_diffuse[0]);
glPopMatrix();
if (m_texture_enabled) {
glEnable(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, m_wrap_s_mode);
@ -195,6 +219,18 @@ void GLContextWidget::timer_event(Core::TimerEvent&)
auto frame_rate = render_time > 0 ? 1000 / render_time : 0;
m_stats->set_text(String::formatted("{:.0f} fps, {:.1f} ms", frame_rate, render_time));
m_accumulated_time = 0;
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
light_counter++;
if ((light_counter % 3) == 0)
glDisable(GL_LIGHT0);
else if ((light_counter % 3) == 1)
glDisable(GL_LIGHT1);
else
glDisable(GL_LIGHT2);
}
update();