void Render(void)
{
using namespace oglplus;
double t = FrameTime();
gl.Clear().ColorBuffer().DepthBuffer();
//
auto camera = CamMatrixf::Orbiting(
camera_target,
camera_distance,
-FullCircles(t / 17.0),
Degrees(SineWave(t / 41.0) * 85)
);
camera_matrix.Set(camera);
camera_position.Set(camera.Position());
light_position.Set(
CamMatrixf::Orbiting(
camera_target,
camera_distance*2.0,
FullCircles(t / 37.0),
Degrees(SineWave(t / 31.0) * 85)
).Position()
);
face_normals.Set(int(t*0.25) % 2);
gl.DrawElements(
PrimitiveType::TriangleFan,
element_count,
DataType::UnsignedInt
);
}
void FullscreenQuad::DrawElements() const
{
static oglplus::Context gl;
fsQuadVertexArray.Bind();
gl.DrawElements(
oglplus::PrimitiveType::Triangles, 6,
oglplus::DataType::UnsignedInt
);
}