void RenderShadowMap()
{
if (Renderer.Sun != null)
{
shadowCamera.Position = Renderer.Sun.Position * 1500; // Extrapolate the normalized sun position a bit
shadowCamera.Update();
}
// Enable global wireframe if needed
if (Renderer.GlobalWireframe)
{
StateManager.EnableWireframe();
}
// Ensure back-face culling is enabled
StateManager.Disable(EnableCap.CullFace);
StateManager.Enable(EnableCap.DepthTest);
shadowShader.Start();
shadowShader.LoadMatrix4("lightSpaceMatrix", shadowCamera.LightSpaceMatrix);
if (GFXSettings.ShadowResolution != shadowMap.Width)
{
shadowMap.Resize(GFXSettings.ShadowResolution, GFXSettings.ShadowResolution);
}
GL.Viewport(0, 0, shadowMap.Width, shadowMap.Height);
shadowMap.Bind();
GL.Clear(ClearBufferMask.DepthBufferBit);
foreach (Renderer3D renderer in Renderer.Renderer3Ds.Values)
{
renderer.Render(shadowShader, RenderPass.Shadow, false);
}
GL.DepthFunc(DepthFunction.Always);
foreach (Renderer3D renderer in Renderer.Renderer3Ds.Values)
{
renderer.Render(shadowShader, RenderPass.Shadow, true);
}
GL.DepthFunc(DepthFunction.Less);
shadowMap.Unbind();
shadowShader.Stop();
StateManager.DisableWireframe(true);
GL.Viewport(0, 0,
Renderer.ScreenWidth % 2 == 0 ? Renderer.ScreenWidth : Renderer.ScreenWidth - 1,
Renderer.ScreenHeight % 2 == 0 ? Renderer.ScreenHeight : Renderer.ScreenHeight + 1);
}
void RenderObjects()
{
// Enable global wireframe if needed
if (Renderer.GlobalWireframe)
{
StateManager.EnableWireframe();
}
// Ensure back-face culling is enabled
StateManager.Enable(EnableCap.CullFace);
StateManager.Enable(EnableCap.DepthTest);
StateManager.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
forwardShader.Start();
forwardShader.LoadColor4("colorOverlay", Color.White);
forwardShader.LoadFloat("entityLighting", 1f);
// Load global shader variables
Camera camera = Camera.Active;
forwardShader.LoadBool("fogEnabled", Renderer.FogEnabled);
if (Renderer.FogEnabled)
{
forwardShader.LoadInt("fogQuality", (int)GFXSettings.FogQuality);
forwardShader.LoadFloat("fogDensity", Renderer.FogDensity);
forwardShader.LoadFloat("fogGradient", Renderer.FogGradient);
forwardShader.LoadFloat("fogMin", Renderer.FogMin);
forwardShader.LoadFloat("fogMax", Renderer.FogMax);
GL.ActiveTexture(TextureUnit.Texture1);
if (GFXSettings.FogQuality == FogQuality.High)
{
skyRenderTarg.Texture.Bind();
}
else if (GFXSettings.FogQuality == FogQuality.Medium)
{
Renderer.Sky.skyMap.Bind();
forwardShader.LoadFloat("skyMapOffset", Renderer.Sky.skyMapOffset);
}
else
{
forwardShader.LoadColor3("fogColor", Renderer.FogColor);
}
}
forwardShader.LoadLights(Renderer.Lights);
forwardShader.LoadMatrix4("projectionMatrix", camera.ProjectionMatrix);
forwardShader.LoadMatrix4("viewMatrix", camera.ViewMatrix);
forwardShader.LoadVector3("cameraPosition", camera.Position);
forwardShader.LoadFloat("ambientIntensity", Renderer.AmbientIntensity);
forwardShader.LoadBool("renderShadows", GFXSettings.RenderShadows);
forwardShader.LoadFloat("lightFalloff", Renderer.LightFalloff);
if (GFXSettings.RenderShadows)
{
forwardShader.LoadMatrix4("lightSpaceMatrix", shadowCamera.LightSpaceMatrix);
forwardShader.LoadInt("pcfSamples", GFXSettings.ShadowPCFSamples);
forwardShader.LoadFloat("shadowTexelMultiplier", shadow_texelMultiplier);
forwardShader.LoadFloat("shadowBias", Renderer.ShadowBias);
forwardShader.LoadFloat("shadowVisibility", Renderer.ShadowVisibility);
GL.ActiveTexture(TextureUnit.Texture0);
shadowMap.BindTex();
}
// Render normal geometry
foreach (Renderer3D renderer in Renderer.Renderer3Ds.Values)
{
renderer.Prepare();
renderer.Render(forwardShader, RenderPass.Normal, false);
}
shadowMap.UnbindTex();
// Render front geometry
if (GFXSettings.RenderShadows)
{
GL.ActiveTexture(TextureUnit.Texture0);
shadowMap.BindTex();
}
GL.Clear(ClearBufferMask.DepthBufferBit);
foreach (Renderer3D renderer in Renderer.Renderer3Ds.Values)
{
renderer.Prepare();
renderer.Render(forwardShader, RenderPass.Normal, true);
}
forwardShader.Stop();
shadowMap.UnbindTex();
// Reset wireframe
StateManager.DisableWireframe(true);
}
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);
}
