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GLTeapot: Use glGenLists() a bit to demonstrate that it works

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This commit is contained in:
Ali Mohammad Pur 2021-05-09 09:55:38 +04:30 • committed by Linus Groh
parent 720d21411b
commit d42d984a2d
1 changed files with 11 additions and 5 deletions
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16
Userland/Demos/GLTeapot/main.cpp
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@ -43,6 +43,15 @@ private:
glLoadIdentity(); glLoadIdentity();
glFrustum(-0.5, 0.5, -0.5, 0.5, 1, 1500); 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();
// Load the teapot // Load the teapot
auto mesh_loader = adopt_own(*new WavefrontOBJLoader()); auto mesh_loader = adopt_own(*new WavefrontOBJLoader());
m_teapot = mesh_loader->load("/res/gl/teapot.obj"); m_teapot = mesh_loader->load("/res/gl/teapot.obj");
@ -57,6 +66,7 @@ private:
RefPtr<Mesh> m_teapot; RefPtr<Mesh> m_teapot;
RefPtr<Gfx::Bitmap> m_bitmap; RefPtr<Gfx::Bitmap> m_bitmap;
OwnPtr<GL::GLContext> m_context; OwnPtr<GL::GLContext> m_context;
GLuint m_init_list { 0 };
}; };
void GLContextWidget::paint_event(GUI::PaintEvent& event) void GLContextWidget::paint_event(GUI::PaintEvent& event)
@ -69,13 +79,9 @@ void GLContextWidget::paint_event(GUI::PaintEvent& event)
void GLContextWidget::timer_event(Core::TimerEvent&) void GLContextWidget::timer_event(Core::TimerEvent&)
{ {
static float angle = 0.0f; static float angle = 0.0f;
glCallList(m_init_list);
angle -= 0.01f; angle -= 0.01f;
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
auto matrix = FloatMatrix4x4::translate(FloatVector3(0, 0, -8.5)) auto matrix = FloatMatrix4x4::translate(FloatVector3(0, 0, -8.5))
* FloatMatrix4x4::rotate(FloatVector3(1, 0, 0), angle) * FloatMatrix4x4::rotate(FloatVector3(1, 0, 0), angle)
* FloatMatrix4x4::rotate(FloatVector3(0, 1, 0), 0.0f) * FloatMatrix4x4::rotate(FloatVector3(0, 1, 0), 0.0f)