public void Prepare(ICamera viewerCamera)
{
if (viewerCamera == null)
{
throw new ArgumentNullException("viewerCamera");
}
internalCamera.View.Position = viewerCamera.View.Position;
internalCamera.View.Direction = viewerCamera.View.Direction;
internalCamera.View.Up = viewerCamera.View.Up;
//internalCamera.Projection.Fov = viewerCamera.Projection.Fov;
// TODO
internalCamera.Projection.Fov = MathHelper.PiOver4 / 2;
internalCamera.Projection.AspectRatio = viewerCamera.Projection.AspectRatio;
internalCamera.Projection.NearPlaneDistance = viewerCamera.Projection.NearPlaneDistance;
internalCamera.Projection.FarPlaneDistance = settings.FarPlaneDistance;
internalCamera.Update();
PrepareSplitCameras();
}
void DrawNormalDepth(IPostProcessorContext context)
{
Instrument.Begin(InstrumentDrawNormalDepth);
var viewerCamera = context.ActiveCamera;
//----------------------------------------------------------------
// 内部カメラの準備
internalCamera.View.Position = viewerCamera.View.Position;
internalCamera.View.Direction = viewerCamera.View.Direction;
internalCamera.View.Up = viewerCamera.View.Up;
internalCamera.Projection.Fov = viewerCamera.Projection.Fov;
internalCamera.Projection.AspectRatio = viewerCamera.Projection.AspectRatio;
internalCamera.Projection.NearPlaneDistance = viewerCamera.Projection.NearPlaneDistance;
internalCamera.Projection.FarPlaneDistance = FarPlaneDistance;
internalCamera.Update();
internalCamera.Frustum.GetCorners(frustumCorners);
frustumSphere = BoundingSphere.CreateFromPoints(frustumCorners);
//----------------------------------------------------------------
// エフェクト
normalDepthMapEffect.View = internalCamera.View.Matrix;
normalDepthMapEffect.Projection = internalCamera.Projection.Matrix;
//----------------------------------------------------------------
// 描画
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
GraphicsDevice.BlendState = BlendState.Opaque;
GraphicsDevice.SetRenderTarget(normalDepthMap);
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.White, 1.0f, 0);
// 不透明オブジェクトのみ対象。
for (int i = 0; i < context.OpaqueObjects.Count; i++)
{
var opaque = context.OpaqueObjects[i];
// 専用カメラの視錐台に含まれるもののみを描画。
if (IsVisibleObject(opaque))
{
opaque.Draw(normalDepthMapEffect);
}
}
GraphicsDevice.SetRenderTarget(null);
Instrument.End();
}
void DrawSsaoMap(IPostProcessorContext context)
{
Instrument.Begin(InstrumentDrawSsaoMap);
var viewerCamera = context.ActiveCamera;
//================================================================
//
// 法線深度マップを描画
//
//----------------------------------------------------------------
// 内部カメラの準備
internalCamera.View.Position = viewerCamera.View.Position;
internalCamera.View.Direction = viewerCamera.View.Direction;
internalCamera.View.Up = viewerCamera.View.Up;
internalCamera.Projection.Fov = viewerCamera.Projection.Fov;
internalCamera.Projection.AspectRatio = viewerCamera.Projection.AspectRatio;
internalCamera.Projection.NearPlaneDistance = viewerCamera.Projection.NearPlaneDistance;
// TODO
// 状況に応じて FarPlaneDistance を変化させられるように。
//internalCamera.Projection.FarPlaneDistance = viewerCamera.Projection.FarPlaneDistance;
internalCamera.Projection.FarPlaneDistance = 32;
internalCamera.Update();
internalCamera.Frustum.GetCorners(frustumCorners);
frustumSphere = BoundingSphere.CreateFromPoints(frustumCorners);
//----------------------------------------------------------------
// エフェクト
normalDepthMapEffect.View = internalCamera.View.Matrix;
normalDepthMapEffect.Projection = internalCamera.Projection.Matrix;
//----------------------------------------------------------------
// 描画
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
GraphicsDevice.BlendState = BlendState.Opaque;
GraphicsDevice.SetRenderTarget(normalDepthMap);
GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.White, 1.0f, 0);
// 不透明オブジェクトのみ対象。
for (int i = 0; i < context.OpaqueObjects.Count; i++)
{
var opaque = context.OpaqueObjects[i];
if (!(opaque is ShadowCaster))
{
continue;
}
// 専用カメラの視錐台に含まれるもののみを描画。
if (IsVisibleObject(opaque))
{
opaque.Draw(normalDepthMapEffect);
}
}
GraphicsDevice.SetRenderTarget(null);
//================================================================
//
// SSAO マップを描画
//
//----------------------------------------------------------------
// エフェクト
var randomOffsetVector = viewerCamera.View.Position + viewerCamera.View.Direction;
ssaoMapEffect.TotalStrength = TotalStrength;
ssaoMapEffect.Strength = Strength;
ssaoMapEffect.Falloff = Falloff;
ssaoMapEffect.Radius = Radius;
ssaoMapEffect.RandomOffset = randomOffsetVector.LengthSquared();
//----------------------------------------------------------------
// 描画
GraphicsDevice.SetRenderTarget(ssaoMap);
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Opaque, SamplerState.PointClamp, null, null, ssaoMapEffect.Effect);
spriteBatch.Draw(normalDepthMap, ssaoMap.Bounds, Color.White);
spriteBatch.End();
GraphicsDevice.SetRenderTarget(null);
//================================================================
//
// SSAO マップへブラーを適用
//
// TODO
for (int i = 0; i < 3; i++)
{
blur.Filter(ssaoMap, normalDepthMap);
}
Instrument.End();
}
