/// <summary>
/// Updates the mie rayleigh textures.
/// </summary>
void UpdateMieRayleighTextures()
{
// Set RenderTargets
device.SetRenderTargets(rayleighRT, mieRT);
device.Clear(Color.CornflowerBlue);
// Set Scatter Effect parameters
scatterEffect.CurrentTechnique = scatterEffect.Techniques["Update"];
scatterEffect.Parameters["InvWavelength"].SetValue(parameters.InverseWaveLengths);
scatterEffect.Parameters["WavelengthMie"].SetValue(parameters.WaveLengthsMie);
scatterEffect.Parameters["v3SunDir"].SetValue(new Vector3(-parameters.LightDirection.X, -parameters.LightDirection.Y, -parameters.LightDirection.Z));
// Apply Effect
scatterEffect.CurrentTechnique.Passes[0].Apply();
// Draw
fullscreenQuad.Render(Vector2.One * -1, Vector2.One);
// Clear RenderTargets
device.SetRenderTargets(null);
// Set Textures
mieTex = mieRT;
rayleighTex = rayleighRT;
}
/// <summary>
/// Blurs the SSAO.
/// </summary>
/// <param name="device">The device.</param>
void BlurSSAO(GraphicsDevice device)
{
// Set the Blur RenderTarget and clear the GraphicsDevice
device.SetRenderTarget(blurRT);
device.Clear(Color.White);
// Set SSAO RenderTarget on the GraphicsDevice
device.Textures[3] = ssaoRT;
device.SamplerStates[3] = SamplerState.LinearClamp;
// Set Effect Parameters
blurEffect.Parameters["blurDirection"].SetValue(Vector2.One);
blurEffect.Parameters["targetSize"].SetValue(gBufferTextureSize);
// Apply Effect
blurEffect.CurrentTechnique.Passes[0].Apply();
// Draw
fullscreenQuad.Render(Vector2.One * -1, Vector2.One);
}
/// <summary>
/// Clears the G buffer.
/// </summary>
private void ClearGBuffer()
{
clearBufferEffect.Techniques[0].Passes[0].Apply();
quadRenderer.Render(Vector2.One * -1, Vector2.One);
}
