public void renderLightMap(List <GameObject> gobs, List <InstanceDescriptor> insts)
{
ConvexHull.InitializeStaticMembers(GraphicsDevice);
EffectParameter widthParameter = lightEffect.Parameters["screenWidth"];
EffectParameter heightParameter = lightEffect.Parameters["screenHeight"];
setShaderValue(widthParameter, lightMapTarget.Width);
setShaderValue(heightParameter, lightMapTarget.Height);
GraphicsDevice.SetRenderTarget(lightMapTarget);
GraphicsDevice.Clear(XnaColor.Transparent);
insts.ForEach(i =>
{
if (i.Light.Visible)
{
ClearAlphaToOne();
GraphicsDevice.RasterizerState = RasterizerState.CullNone;
GraphicsDevice.BlendState = CustomBlendStates.MultiplyShadows;
//shadowing algorithm taken from http://www.catalinzima.com/xna/samples/dynamic-2d-shadows/
if (Level.PreviewShadowing)
{
insts.ForEach(hull =>
{
if (hull.Shadows.CastsShadows)
{
Boolean pass = hull != i;
if (i.Shadows.SelfShadows)
{
pass = true;
}
if (pass)
{
Convex convex = hull.Bounds.Convex;
convex.Origin = hull.Position;
convex.Rotation = hull.Sprite.Rotation;
ConvexHull convexHull = new ConvexHull(convex, WhiskeyColor.White);
convexHull.DrawShadows(i.Light, CameraTransform, hull.Shadows.IncludeLight, hull.Shadows.Solidness, hull.Shadows.Height);
}
}
});
}
spriteBatch.Begin(SpriteSortMode.Immediate, CustomBlendStates.MultiplyWithAlpha, SamplerState.LinearClamp, DepthStencilState.Default, RasterizerState.CullNone, null, CameraTransform);
i.renderLight(RenderInfo);
spriteBatch.End();
}
});
ClearAlphaToOne();
lightBloomComponent.BeginDraw();
GraphicsDevice.Clear(XnaColor.Transparent);
spriteBatch.Begin();
spriteBatch.Draw(lightMapTarget, Vector.Zero, null, XnaColor.White);
spriteBatch.End();
lightBloomComponent.draw();
lightMapTarget = lightBloomComponent.OutputTarget;
}
