/// <summary>
/// Renders depth information to grayscale so it is more useful for debug.
/// </summary>
/// <param name="fullScreenQuad">FullScreenQuad class.</param>
public void UpdateDepthDebugBuffer(FullScreenQuad fullScreenQuad)
{
// Clear render target
SetViewport();
// Create render target if it doesn't exist or is lost
if (depthDebugBuffer == null)
{
CreateDepthDebugBuffer();
}
else if (depthDebugBuffer.IsContentLost)
{
CreateDepthDebugBuffer();
}
// Set render target
graphicsDevice.SetRenderTarget(depthDebugBuffer);
// Set render states
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Set values
drawDebugDepthBufferEffect.Parameters["DepthMap"].SetValue(depthRT);
drawDebugDepthBufferEffect.Parameters["HalfPixel"].SetValue(halfPixel);
// Apply changes and draw
drawDebugDepthBufferEffect.Techniques[0].Passes[0].Apply();
fullScreenQuad.Draw(graphicsDevice);
}
/// <summary>
/// Clear GBuffer.
/// </summary>
/// <param name="clearBufferEffect">Effect to clear GBuffer with.</param>
/// <param name="fullScreenQuad">FullScreenQuad class.</param>
/// <param name="clearColor">Clear colour for diffuse buffer.</param>
public void ClearGBuffer(Effect clearBufferEffect, FullScreenQuad fullScreenQuad, Color clearColor)
{
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.DepthStencilState = DepthStencilState.None;
clearBufferEffect.Parameters["ClearColor"].SetValue(clearColor.ToVector3());
clearBufferEffect.Techniques[0].Passes[0].Apply();
fullScreenQuad.Draw(graphicsDevice);
}
/// <summary>
/// Compose buffers into one layer.
/// </summary>
public void ComposeFinal(Effect finalCombineEffect, FullScreenQuad fullScreenQuad)
{
// Set render states
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Set values
finalCombineEffect.Parameters["ColorMap"].SetValue(colorRT);
finalCombineEffect.Parameters["LightMap"].SetValue(lightRT);
finalCombineEffect.Parameters["DepthMap"].SetValue(depthRT);
finalCombineEffect.Parameters["HalfPixel"].SetValue(halfPixel);
finalCombineEffect.Parameters["AmbientColor"].SetValue(ambientLightColor);
// Apply changes and draw
finalCombineEffect.Techniques[0].Passes[0].Apply();
fullScreenQuad.Draw(graphicsDevice);
}
/// <summary>
/// Combines all render targets into back buffer for presentation.
/// Runs post-processing until a proper framework is written.
/// </summary>
private void ComposeFinal()
{
// No post-processing enabled, just compose into render target
if (!fxaaEnabled && !bloomEnabled)
{
// Set render target
graphicsDevice.SetRenderTarget(renderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Compose final image from GBuffer
gBuffer.ComposeFinal(finalCombineEffect, fullScreenQuad);
}
// Only fxaa is enabled
else if (fxaaEnabled && !bloomEnabled)
{
// Set render target
graphicsDevice.SetRenderTarget(fxaaRenderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Compose final image from GBuffer
gBuffer.ComposeFinal(finalCombineEffect, fullScreenQuad);
// Set render target
graphicsDevice.SetRenderTarget(renderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Set effect parameters
fxaaAntialiasing.CurrentTechnique = fxaaAntialiasing.Techniques["ppfxaa"];
fxaaAntialiasing.Parameters["SCREEN_WIDTH"].SetValue(fxaaRenderTarget.Width);
fxaaAntialiasing.Parameters["SCREEN_HEIGHT"].SetValue(fxaaRenderTarget.Height);
fxaaAntialiasing.Parameters["gScreenTexture"].SetValue(fxaaRenderTarget as Texture2D);
// Set render states
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Draw FXAA
fxaaAntialiasing.Techniques[0].Passes[0].Apply();
fullScreenQuad.Draw(graphicsDevice);
}
// Only bloom is enabled
else if (bloomEnabled && !fxaaEnabled)
{
// Set render target
graphicsDevice.SetRenderTarget(bloomRenderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Compose final image from GBuffer
gBuffer.ComposeFinal(finalCombineEffect, fullScreenQuad);
// Draw bloom
bloomProcessor.Draw(bloomRenderTarget, renderTarget);
}
// Both fxaa and bloom are enabled
else if (fxaaEnabled && bloomEnabled)
{
// Set render target
graphicsDevice.SetRenderTarget(fxaaRenderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Compose final image from GBuffer
gBuffer.ComposeFinal(finalCombineEffect, fullScreenQuad);
// Next render target
graphicsDevice.SetRenderTarget(bloomRenderTarget);
// Clear target
graphicsDevice.Clear(clearColor);
// Set effect parameters
fxaaAntialiasing.CurrentTechnique = fxaaAntialiasing.Techniques["ppfxaa"];
fxaaAntialiasing.Parameters["SCREEN_WIDTH"].SetValue(fxaaRenderTarget.Width);
fxaaAntialiasing.Parameters["SCREEN_HEIGHT"].SetValue(fxaaRenderTarget.Height);
fxaaAntialiasing.Parameters["gScreenTexture"].SetValue(fxaaRenderTarget as Texture2D);
// Set render states
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.SamplerStates[0] = SamplerState.LinearClamp;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Draw FXAA
fxaaAntialiasing.Techniques[0].Passes[0].Apply();
fullScreenQuad.Draw(graphicsDevice);
// Draw bloom
bloomProcessor.Draw(bloomRenderTarget, renderTarget);
}
}