/// <summary>
/// Prepares the light map to be drawn (pre-render)
/// </summary>
public void LightMapPrepare()
{
// Prepare and set the matrix
var viewWidth = this.GraphicsDevice.ScissorRectangle.Width;
var viewHeight = this.GraphicsDevice.ScissorRectangle.Height;
// Prepare the matrix with optional settings and assign it to an effect parameter
Matrix lightMapMatrix = this.LightmapMatrixGet();
this.mEffect.Parameters["Matrix"].SetValue(lightMapMatrix);
// Obtain the original rendering states
var originalRenderTargets = this.GraphicsDevice.GetRenderTargets();
// Set and clear the target
this.GraphicsDevice.SetRenderTarget(this.mMap);
this.GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.Stencil, this.mAmbientColor, 0, 1);
// Make sure we're culling the right way!
this.GraphicsDevice.RasterizerState = KryptonEngine.RasterizerStateGetFromCullMode(this.mCullMode);
// put the render target's size into a more friendly format
var targetSize = new Vector2(this.mMap.Width, this.mMap.Height);
// Render Light Maps
foreach (var light in this.mLights)
{
// Loop through each light within the view frustum
if (light.Bounds.Intersects(this.mBounds))
{
// Clear the stencil and set the scissor rect (because we're stretching geometry past the light's reach)
this.GraphicsDevice.Clear(ClearOptions.Stencil, Color.Black, 0, 1);
this.GraphicsDevice.ScissorRectangle = KryptonEngine.ScissorRectCreateForLight(light, lightMapMatrix, targetSize);
// Draw the light!
light.Draw(this.RenderHelper, this.mHulls);
}
}
if (this.mBluriness > 0)
{
// Blur the shadow map horizontally to the blur target
this.GraphicsDevice.SetRenderTarget(this.mMapBlur);
this.RenderHelper.BlurTextureToTarget(this.mMap, LightMapSize.Full, BlurTechnique.Horizontal, this.mBluriness);
// Blur the shadow map vertically back to the final map
this.GraphicsDevice.SetRenderTarget(this.mMap);
this.RenderHelper.BlurTextureToTarget(this.mMapBlur, LightMapSize.Full, BlurTechnique.Vertical, this.mBluriness);
}
// Reset to the original rendering states
this.GraphicsDevice.SetRenderTargets(originalRenderTargets);
}
/// <summary>
/// Prepares the light map to be drawn (pre-render)
/// </summary>
public void LightMapPrepare()
{
// Prepare the matrix with optional settings and assign it to an effect parameter
Matrix lightMapMatrix = LightmapMatrixGet();
_effect.Parameters["Matrix"].SetValue(lightMapMatrix);
// Obtain the original rendering states
var originalRenderTargets = GraphicsDevice.GetRenderTargets();
// Set and clear the target
GraphicsDevice.SetRenderTarget(_map);
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.Stencil, AmbientColor, 0, 1);
// Make sure we're culling the right way!
GraphicsDevice.RasterizerState = KryptonEngine.RasterizerStateGetFromCullMode(CullMode);
// put the render target's size into a more friendly format
var targetSize = new Vector2(_map.Width, _map.Height);
// Render Light Maps
foreach (var light in Lights)
{
// Loop through each light within the view frustum
if (!light.Bounds.Intersects(_bounds))
{
continue;
}
// Clear the stencil and set the scissor rect (because we're stretching geometry past the light's reach)
GraphicsDevice.Clear(
options: ClearOptions.Stencil,
color: Color.Black,
depth: 0,
stencil: 0);
GraphicsDevice.ScissorRectangle =
ScissorRectCreateForLight(
light: light,
matrix: lightMapMatrix,
targetSize: targetSize);
// Draw the light!
light.Draw(RenderHelper, Hulls);
}
if (_bluriness > 0)
{
// Blur the shadow map horizontally to the blur target
GraphicsDevice.SetRenderTarget(_mapBlur);
RenderHelper.BlurTextureToTarget(
_map,
LightMapSize.Full,
BlurTechnique.Horizontal,
_bluriness);
// Blur the shadow map vertically back to the final map
GraphicsDevice.SetRenderTarget(_map);
RenderHelper.BlurTextureToTarget(
_mapBlur,
LightMapSize.Full,
BlurTechnique.Vertical,
_bluriness);
}
// Reset to the original rendering states
GraphicsDevice.SetRenderTargets(originalRenderTargets);
}