public void Render(float deltaTime, bool drawSun)
{
if (Master.Sun != null)
{
sun = Master.Sun;
sun.LightPower = 1;
}
StateManager.Disable(EnableCap.DepthTest);
shader.Start();
shader.LoadMatrix4("projectionMatrix", Camera.Active.ProjectionMatrix);
shader.LoadMatrix4("viewMatrix", Camera.Active.ViewMatrix.ClearTranslation());
shader.LoadVector3("sunPosition", Master.Sun != null ? Master.Sun.Position : Vector3.Zero);
//shader.LoadColor3("fogColor", master.FogColor);
//currentHour += (deltaTime);
if (currentHour > 24)
{
currentHour -= 24;
}
else if (currentHour < 0)
{
currentHour += 24;
}
// http://i.imgur.com/Uj45YN2.png
float timeP = currentHour / 24;
/*
* timeP timeT
* midnight: 0 | 0.75
* noon: 0.5 | 0.25
* mid-sun-set: 0.75 | 0.5
* mid-sun-rise: 0.25 | 0
*/
float timeT = timeP - 0.25f;
if (timeT < 0)
{
timeT += 1;
}
else if (timeT > 1)
{
timeT -= 1;
}
timeT = timeT * MathHelper.TwoPi;
float sunY = (float)Math.Sin(timeT);
Master.LightFalloff = Interpolation.CubicBezier(0, 1, 1, 1, MathHelper.Clamp(sunY + 0.2f, 0, 1f));
Master.ShadowVisibility = sunY > 0 ? 1f : 0f;// MathHelper.Clamp(sunY, 0, 1f);
float shadowMinBias = 0.0005f;
float shadowMaxBias = 0.0015f;
float shadowBiasRange = shadowMaxBias - shadowMinBias;
Master.ShadowBias = MathHelper.Clamp(
(((1.4f - sunY) * shadowMaxBias) - shadowMinBias),
shadowMinBias, shadowMaxBias);
if (Master.Sun != null)
{
sun.Position = new Vector3((float)Math.Cos(timeT), sunY, 0);
}
// 12 - 12 = 0 / 12 = 0
// 0 - 12 = -12 / 12 = -1
// 24 - 12 = 12 / 12 = 1
//float n = Math.Abs((currentHour - 12) / 12) * 1.5f;
//float mapOff = MathHelper.Clamp(n * n, 0, 1);
//Diagnostics.DashCMD.WriteLine("Hour: {0:N2}, Off: {1:N2}, Fade: {2:N2}", currentHour, mapOff, mapFade);
//skyMapOffset = mapOff;
shader.LoadFloat("skyMapOffset", 1f - Master.LightFalloff);
shader.LoadFloat("skyMapFade", 1f);
shader.LoadBool("renderSun", drawSun);
GL.ActiveTexture(TextureUnit.Texture0);
skyMap.Bind();
cube.Bind();
shader.EnableAttributes();
if (Master.GlobalWireframe)
{
StateManager.EnableWireframe();
}
GL.DrawArrays(BeginMode.Triangles, 0, cube.VertexCount);
StateManager.DisableWireframe();
shader.DisableAttributes();
GL.BindVertexArray(0);
shader.Stop();
StateManager.Enable(EnableCap.DepthTest);
}