public void Render(Viewport viewport, Camera camera, Scene scene)
{
gl.Viewport(viewport.Left, viewport.Top, viewport.Width, viewport.Height);
gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
foreach (var entities in scene.OfType<PhysicalEntity>().GroupBy(e => e.Material))
{
gl.UseProgram(entities.Key.ID);
entities.Key.SetUniform("projectionMatrix", camera.GetProjectionMatrix(viewport));
foreach (var entity in entities)
{
gl.BindVertexArray(entity.Mesh.ID);
entity.Material.SetUniform("modelViewMatrix", camera.CoordinateSystem.ViewMatrix * entity.CoordinateSystem.ModelMatrix);
gl.DrawArrays((uint)entity.Mesh.Type, 0, entity.Mesh.Length);
}
}
gl.Flush();
gl.Blit(IntPtr.Zero);
}
public void Initialize(IntPtr handle, Viewport viewport)
{
this.viewport = viewport;
gl = new OpenGL();
gl.Create(RenderContextType.NativeWindow, viewport.Width, viewport.Height, 32, handle);
gl.MakeCurrent();
ShaderManager.Initialize(gl);
MaterialManager.Initialize(gl);
renderer = new Renderer();
renderer.Initialize(gl);
camera = new PerspectiveCamera();
camera.LocalTranslate(new Vector(0, 0, 3));
var mesh = new Mesh(gl, MeshType.Points);
mesh.AddBuffer(
new Buffer<Point>(gl,
new Point(-2, -2, 0),
new Point(-1, -1, 0),
new Point( 0, 0, 0),
new Point( 1, -1, 0),
new Point( 2, -2, 0)));
scene = new Scene();
scene.Add(camera);
for (int j = -10; j < 10; j++)
for (int i = -10; i < 10; i++)
{
var e = new PhysicalEntity(mesh, MaterialManager.GetMaterial("Voxels"));
e.GlobalTranslate(Vector.UnitZ * -5 * i);
e.GlobalTranslate(Vector.UnitX * -5 * j);
scene.Add(e);
}
gl.MakeNothingCurrent();
}
public override Matrix GetProjectionMatrix(Viewport viewport)
{
float aspect = viewport.Width / (float)viewport.Height;
return Transform.Perspective(VerticalFieldOfView, aspect, 0.1f, 100.0f);
}
public override Matrix GetProjectionMatrix(Viewport viewport)
{
float aspect = viewport.Width / (float)viewport.Height;
float halfWidth = HalfHeight * aspect;
return Transform.Ortho(-halfWidth, halfWidth, -HalfHeight, HalfHeight, 0.1f, 100.0f);
}
public abstract Matrix GetProjectionMatrix(Viewport viewport);
public void OnViewportChanged(Viewport viewport)
{
this.viewport = viewport;
}
public void OnViewportChanged(Viewport viewport)
{
this.viewport = viewport;
}