public void OnLoad()
{
var dir = Directory.GetCurrentDirectory();
ResourceGroupManager.Instance.AddResourceLocation(dir, "Folder");
//MaterialManager.Instance.Initialize();
_scene = _root.CreateSceneManager("DefaultSceneManager", "SLSharpInstance");
_scene.ClearScene();
Bindings.Axiom.SLSharp.Init();
Shader.DebugMode = true;
//Shader.DebugMode = true;
_clipmap = new Clipmap(_scene);
RecalcHeight();
_camera = _scene.CreateCamera("MainCamera");
_camera.Position = new Vector3(0, 0, 5);
_camera.LookAt(Vector3.Zero);
_camera.Near = 0.001f;
_camera.Far = 20.0f;
_camera.AutoAspectRatio = true;
var vp = _window.AddViewport(_camera);
vp.BackgroundColor = ColorEx.CornflowerBlue;
}
public CameraComponent()
{
camera = null;
acceleration = Vector3.Zero;
velocity = Vector3.Zero;
rotation = Vector3.Zero;
}
/// <summary>
///
/// </summary>
/// <param name="camera"></param>
public override void NotifyCurrentCamera( Camera camera )
{
base.NotifyCurrentCamera( camera );
///Fake orientation toward camera
Vector3 zVec = ParentNode.DerivedPosition - camera.DerivedPosition;
zVec.Normalize();
Vector3 fixedAxis = camera.DerivedOrientation*Vector3.UnitY;
Vector3 xVec = fixedAxis.Cross( zVec );
xVec.Normalize();
Vector3 yVec = zVec.Cross( xVec );
yVec.Normalize();
Quaternion oriQuat = Quaternion.FromAxes( xVec, yVec, zVec );
this.fakeOrientation = oriQuat.ToRotationMatrix();
Quaternion q = ParentNode.DerivedOrientation.UnitInverse*oriQuat;
Matrix3 tempMat = q.ToRotationMatrix();
Matrix4 rotMat = Matrix4.Identity;
rotMat = tempMat;
rotMat.Translation = new Vector3( 0.5f, 0.5f, 0.5f );
this.unit.TextureMatrix = rotMat;
}
protected override void CreateCamera()
{
base.CreateCamera();
camera2 = scene.CreateCamera("Camera2");
camera2.Far = 300;
camera2.Near = 1;
}
///
/// </summary>
/// <param name="camera"></param>
/// <returns></returns>
public override float GetSquaredViewDepth(Camera camera)
{
// get the parent entitie's parent node
Node node = this.ParentNode;
Debug.Assert(node != null);
return node.GetSquaredViewDepth(camera);
}
public void Merge( AxisAlignedBox boxBounds, Sphere sphereBounds, Camera cam, bool receiver )
{
aabb.Merge( boxBounds );
if ( receiver )
receiverAabb.Merge( boxBounds );
Real camDistToCenter = ( cam.DerivedPosition - sphereBounds.Center ).Length;
minDistance = System.Math.Min( minDistance, System.Math.Max( (Real)0, camDistToCenter - sphereBounds.Radius ) );
maxDistance = System.Math.Max( maxDistance, camDistToCenter + sphereBounds.Radius );
}
/// <summary>
///
/// </summary>
/// <param name="cam"></param>
/// <param name="section"></param>
public override void NotifyCamera(Camera cam, PagedWorldSection section)
{
Grid2DPageStrategyData stratData = (Grid2DPageStrategyData)section.StrategyData;
Vector3 pos = cam.DerivedPosition;
Vector2 gridpos = Vector2.Zero;
stratData.ConvetWorldToGridSpace(pos, ref gridpos);
int row = 0, col = 0;
stratData.DetermineGridLocation(gridpos, ref row, ref col);
float loadRadius = stratData.LoadRadiusInCells;
float holdRadius = stratData.HoldRadiusInCells;
//scan the whole hold range
float frowmin = (float)row - holdRadius;
float frowmax = (float)row + holdRadius;
float fcolmin = (float)col - holdRadius;
float fcolmax = (float)col + holdRadius;
int clampRowAt = stratData.CellCountVert - 1;
int clampColAt = stratData.CellCountHorz - 1;
//round UP max, round DOWN min
int rowmin = frowmin < 0 ? 0 : (int)System.Math.Floor(frowmin);
int rowmax = frowmax > clampRowAt ? clampRowAt : (int)System.Math.Ceiling(frowmax);
int colmin = fcolmin < 0 ? 0 : (int)System.Math.Floor(fcolmin);
int colmax = fcolmax > clampColAt ? clampColAt : (int)System.Math.Ceiling(fcolmax);
// the inner, active load range
frowmin = (float)row - loadRadius;
frowmax = (float)row + loadRadius;
fcolmin = (float)col - loadRadius;
fcolmax = (float)col + loadRadius;
//round UP max, round DOWN min
int loadrowmin = frowmin < 0 ? 0 : (int)System.Math.Floor(frowmin);
int loadrowmax = frowmax > clampRowAt ? clampRowAt : (int)System.Math.Ceiling(frowmax);
int loadcolmin = fcolmin < 0 ? 0 : (int)System.Math.Floor(fcolmin);
int loadcolmax = fcolmax > clampColAt ? clampColAt : (int)System.Math.Ceiling(fcolmax);
for (int r = rowmin; r <= rowmax; ++r)
{
for (int c = colmin; c <= colmax; ++c)
{
PageID pageID = stratData.CalculatePageID(r, c);
if (r >= loadrowmin && r <= loadrowmax && c >= loadcolmin && c <= loadcolmax)
{
// int the 'load' range, request it
section.LoadPage(pageID);
}
else
{
// int the outer 'hold' range, keep it but don't actively load.
section.HoldPage(pageID);
}
// other paged will by inference be marked for unloading
}
}
}
/// <summary>
/// Returns the camera-relative squared depth of this renderable.
/// </summary>
/// <param name="camera"></param>
/// <returns></returns>
public override Real GetSquaredViewDepth( Camera camera )
{
Vector3 min, max, mid, dist;
min = box.Minimum;
max = box.Maximum;
mid = ( ( min - max )*0.5 ) + min;
dist = camera.DerivedPosition - mid;
return dist.LengthSquared;
}
public virtual void CreateCamera()
{
// create a camera and initialize its position
camera = scene.CreateCamera("MainCamera");
camera.Position = new Vector3(0, 0, 500);
camera.LookAt(new Vector3(0, 0, -300));
// set the near clipping plane to be very close
camera.Near = 5;
camera.AutoAspectRatio = true;
}
public override void NotifyCurrentCamera(Axiom.Core.Camera cam)
{
if (((Camera)(cam)).IsObjectVisible(this.worldAABB))
{
isVisible = true;
}
else
{
isVisible = false;
return;
}
}
/// <summary>
/// Internal method for updating the scene graph ie the tree of SceneNode instances managed by this class.
/// </summary>
/// <param name="cam"></param>
/// <remarks>
/// This must be done before issuing objects to the rendering pipeline, since derived transformations from
/// parent nodes are not updated until required. This SceneManager is a basic implementation which simply
/// updates all nodes from the root. This ensures the scene is up to date but requires all the nodes
/// to be updated even if they are not visible. Subclasses could trim this such that only potentially visible
/// nodes are updated.
/// </remarks>
protected override void UpdateSceneGraph(Axiom.Core.Camera cam)
{
// entry into here could come before SetWorldGeometry
// got called which could be disasterous
// so check for init
if (worldGeomIsSetup)
{
pageManager.Update((Camera)cam);
renderableManager.ResetVisibles();
}
// Call the default
base.UpdateSceneGraph(cam);
}
public void OnLoad()
{
//ResourceGroupManager.Instance.AddResourceLocation("media", "Folder", true);
_root.SceneManager = _sceneManager = _root.CreateSceneManager(SceneType.ExteriorClose);
_sceneManager.ClearScene();
_camera = _sceneManager.CreateCamera("MainCamera");
_camera.Position = new Vector3(0, 0, 500);
_camera.LookAt(new Vector3(0, 0, -300));
_camera.Near = 5;
_camera.AutoAspectRatio = true;
_camera.FieldOfView = 0.70f;
_viewport = _renderWindow.AddViewport(_camera, 0, 0, 1.0f, 1.0f, 100);
_viewport.BackgroundColor = ColorEx.Black; ;
_light = _sceneManager.CreateLight("light1");
_light.Type = LightType.Directional;
_light.Position = new Vector3(0, 150, 300);
_light.Diffuse = ColorEx.Blue;
_light.Specular = ColorEx.Blue;
//_light.Direction = new Vector3(0, 0, -300);
_sceneManager.AmbientLight = ColorEx.White;// new ColorEx(0.2f, 0.2f, 0.2f);
ResourceGroupManager.Instance.InitializeAllResourceGroups();
_inputReader = PlatformManager.Instance.CreateInputReader();
_inputReader.Initialize(_renderWindow, true, true, false, false);
_inputReader.UseKeyboardEvents = true;
_inputReader.UseMouseEvents = false;
//_renderItems.Add(new BasicCube());
_renderItems.Add(new CubeBrowser());
foreach (var i in _renderItems)
{
i.Initialise(_root);
}
}
/// <summary>
/// Internal method for updating the scene graph ie the tree of SceneNode instances managed by this class.
/// </summary>
/// <param name="cam"></param>
/// <remarks>
/// This must be done before issuing objects to the rendering pipeline, since derived transformations from
/// parent nodes are not updated until required. This SceneManager is a basic implementation which simply
/// updates all nodes from the root. This ensures the scene is up to date but requires all the nodes
/// to be updated even if they are not visible. Subclasses could trim this such that only potentially visible
/// nodes are updated.
/// </remarks>
protected override void UpdateSceneGraph(Axiom.Core.Camera cam)
{
if (illuminationStage == IlluminationRenderStage.None)
{
// Notify the TerrainManager of the camera location. If a page or tile boundary is crossed
// this will result in a bunch of shuffling of heightMap data.
// After the object bounding boxes have been update below, we need to call
// the TerrainManager again to perform LOD adjustments on all visible tiles,
// and queue the non-visible ones.
TerrainManager.Instance.UpdateCamera(cam);
}
// call the base SceneManager to update the transforms and world bounds of all the
// objects in the scene graph.
base.UpdateSceneGraph(cam);
if (illuminationStage == IlluminationRenderStage.None)
{
TerrainManager.Instance.LatePerFrameProcessing(cam);
}
}
/// <summary>
/// Internal method for locating a list of shadow casters which
/// could be affecting the frustum for a given light.
/// </summary>
/// <remarks>
/// Custom scene managers are encouraged to override this method to add optimizations,
/// and to add their own custom shadow casters (perhaps for world geometry)
/// </remarks>
/// <param name="light"></param>
/// <param name="camera"></param>
protected virtual IList FindShadowCastersForLight( Light light, Camera camera )
{
this.shadowCasterList.Clear();
if ( light.Type == LightType.Directional )
{
// Basic AABB query encompassing the frustum and the extrusion of it
AxisAlignedBox aabb = new AxisAlignedBox();
Vector3[] corners = camera.WorldSpaceCorners;
Vector3 min, max;
Vector3 extrude = light.DerivedDirection * -this.shadowDirLightExtrudeDist;
// do first corner
min = max = corners[ 0 ];
min.Floor( corners[ 0 ] + extrude );
max.Ceil( corners[ 0 ] + extrude );
for ( int c = 1; c < 8; ++c )
{
min.Floor( corners[ c ] );
max.Ceil( corners[ c ] );
min.Floor( corners[ c ] + extrude );
max.Ceil( corners[ c ] + extrude );
}
aabb.SetExtents( min, max );
if ( this.shadowCasterAABBQuery == null )
{
this.shadowCasterAABBQuery = this.CreateAABBRegionQuery( aabb );
}
else
{
this.shadowCasterAABBQuery.Box = aabb;
}
// Execute, use callback
this.shadowCasterQueryListener.Prepare( false,
light.GetFrustumClipVolumes( camera ),
light,
camera,
this.shadowCasterList,
light.ShadowFarDistanceSquared );
this.shadowCasterAABBQuery.Execute( this.shadowCasterQueryListener );
}
else
{
Sphere s = new Sphere( light.DerivedPosition, light.AttenuationRange );
// eliminate early if camera cannot see light sphere
if ( camera.IsObjectVisible( s ) )
{
// create or init a sphere region query
if ( this.shadowCasterSphereQuery == null )
{
this.shadowCasterSphereQuery = this.CreateSphereRegionQuery( s );
}
else
{
this.shadowCasterSphereQuery.Sphere = s;
}
// check if the light is within view of the camera
bool lightInFrustum = camera.IsObjectVisible( light.DerivedPosition );
PlaneBoundedVolumeList volumeList = null;
// Only worth building an external volume list if
// light is outside the frustum
if ( !lightInFrustum )
{
volumeList = light.GetFrustumClipVolumes( camera );
}
// prepare the query and execute using the callback
this.shadowCasterQueryListener.Prepare(
lightInFrustum,
volumeList,
light,
camera,
this.shadowCasterList,
light.ShadowFarDistanceSquared );
this.shadowCasterSphereQuery.Execute( this.shadowCasterQueryListener );
}
}
return this.shadowCasterList;
}
/// <summary>
/// Internal method for locating a list of lights which could be affecting the frustum.
/// </summary>
/// <remarks>
/// Custom scene managers are encouraged to override this method to make use of their
/// scene partitioning scheme to more efficiently locate lights, and to eliminate lights
/// which may be occluded by word geometry.
/// </remarks>
/// <param name="camera">Camera to find lights within it's view.</param>
protected virtual void FindLightsAffectingFrustum( Camera camera )
{
// Basic iteration for this scene manager
this.lightsAffectingFrustum.Clear();
MovableObjectCollection lightList = this.GetMovableObjectCollection( LightFactory.TypeName );
// sphere to use for testing
Sphere sphere = new Sphere();
foreach ( Light light in lightList.Values )
{
if ( light.IsVisible )
{
if ( light.Type == LightType.Directional )
{
// Always visible
this.lightsAffectingFrustum.Add( light );
}
else
{
// treating spotlight as point for simplicity
// Just see if the lights attenuation range is within the frustum
sphere.Center = light.DerivedPosition;
sphere.Radius = light.AttenuationRange;
if ( camera.IsObjectVisible( sphere ) )
{
this.lightsAffectingFrustum.Add( light );
}
}
}
}
// notify light dirty, so all movable objects will re-populate
// their light list next time
NotifyLightsDirty();
}
/** called when the scene manager creates a camera because
some zone managers (like TerrainZone) need the camera info.
*/
public override void NotifyCameraCreated( Camera c )
{
}
public void DestroyCamera( Camera camera )
{
cameraList.Remove( camera.Name );
this.targetRenderSystem.NotifyCameraRemoved( camera );
if ( !camera.IsDisposed )
camera.Dispose();
}
/// <summary>
/// Internal method for updating the scene graph ie the tree of SceneNode instances managed by this class.
/// </summary>
/// <remarks>
/// This must be done before issuing objects to the rendering pipeline, since derived transformations from
/// parent nodes are not updated until required. This SceneManager is a basic implementation which simply
/// updates all nodes from the root. This ensures the scene is up to date but requires all the nodes
/// to be updated even if they are not visible. Subclasses could trim this such that only potentially visible
/// nodes are updated.
/// </remarks>
/// <param name="camera"></param>
protected internal virtual void UpdateSceneGraph( Camera camera )
{
// Process queued needUpdate calls
Node.ProcessQueuedUpdates();
// Cascade down the graph updating transforms & world bounds
// In this implementation, just update from the root
// Smarter SceneManager subclasses may choose to update only
// certain scene graph branches based on space partioning info.
this.rootSceneNode.Update( true, false );
}
/// <summary>
/// Removes the specified camera from the scene.
/// </summary>
/// <remarks>
/// This method removes a previously added camera from the scene.
/// </remarks>
/// <param name="camera">Reference to the camera to remove.</param>
public virtual void RemoveCamera( Camera camera )
{
cameraList.Remove( camera.Name );
// notify all render targets
this.targetRenderSystem.NotifyCameraRemoved( camera );
}
public override void NotifyCurrentCamera(Axiom.Core.Camera cam)
{
if (inUse == false || isLoaded == false)
{
return;
}
if (((Camera)(cam)).IsObjectVisible(this.worldAABB))
{
inFrustum = true;
isVisible = true;
}
else
{
inFrustum = false;
isVisible = false;
return;
}
/* set*/
#if _VisibilityCheck
//Check if the renderable need to be rendered based on the Cone normal approach
//TODO: use the cone aperture not a fixed value
if (Options.Instance.Lit == true)
{
mustRender = (bool)(cam.Direction.Dot(coneNormal) < Options.Instance.VisibilityAngle);
}
#endif
float d = (parentNode.DerivedPosition - cam.DerivedPosition).LengthSquared;
// Now adjust it by the camera bias
d = d * cam.LodBias;
// Material LOD
//TODO:: Axiom Doesn't Support Material LOD yet.
//if ( this.material.getNumLodLevels() > 1 )
// materialLODIndex = m_pMaterial->getLodIndexSquaredDepth(d);
// Check if we need to decrease the LOD
float factor = Options.Instance.LOD_Factor;
float curr_lod = factor * (1 + RenderLevel);
bool changeLOD = false;
if (d < curr_lod)
{
if (RenderLevel != 0)
{
RenderLevel--;
curr_lod -= factor;
changeLOD = true;
}
}
else if (RenderLevel < Options.Instance.MaxRenderLevel && d >= (curr_lod * 2))
{
curr_lod += factor;
RenderLevel++;
changeLOD = true;
}
//**************
//RenderLevel = Options.Instance.MaxRenderLevel;
//changeLOD = true;
//**************
if (changeLOD || this.renderOp.indexData == null)
{
Update();
for (long i = 0; i < 4; i++)
{
if (neighbors[i] != null && neighbors[i].IsLoaded)
{
neighbors[i].Update();
}
}
}
if (this.needReload)
{
Load();
}
}
/** Updates the level of detail to be used for rendering this PagingLandScapeRenderable based on the passed in Camera
*/
public override void NotifyCurrentCamera(Axiom.Core.Camera cam)
{
PagingLandscape.Camera plsmcam = (PagingLandscape.Camera)(cam);
this.isVisible = (init && loaded && plsmcam.GetVisibility(tileSceneNode.WorldAABB));
// this.isVisible = (init && loaded );
}
/// <summary>
/// Internal method for rendering all the objects for a given light into the stencil buffer.
/// </summary>
/// <param name="light">The light source.</param>
/// <param name="camera">The camera being viewed from.</param>
protected virtual void RenderShadowVolumesToStencil( Light light, Camera camera )
{
// get the shadow caster list
IList casters = this.FindShadowCastersForLight( light, camera );
if ( casters.Count == 0 )
{
// No casters, just do nothing
return;
}
// Set up scissor test (point & spot lights only)
bool scissored = false;
if ( light.Type != LightType.Directional &&
this.targetRenderSystem.Capabilities.HasCapability( Capabilities.ScissorTest ) )
{
// Project the sphere onto the camera
float left, right, top, bottom;
Sphere sphere = new Sphere( light.DerivedPosition, light.AttenuationRange );
if ( camera.ProjectSphere( sphere, out left, out top, out right, out bottom ) )
{
scissored = true;
// Turn normalised device coordinates into pixels
int iLeft, iTop, iWidth, iHeight;
this.currentViewport.GetActualDimensions( out iLeft, out iTop, out iWidth, out iHeight );
int szLeft, szRight, szTop, szBottom;
szLeft = (int)( iLeft + ( ( left + 1 ) * 0.5f * iWidth ) );
szRight = (int)( iLeft + ( ( right + 1 ) * 0.5f * iWidth ) );
szTop = (int)( iTop + ( ( -top + 1 ) * 0.5f * iHeight ) );
szBottom = (int)( iTop + ( ( -bottom + 1 ) * 0.5f * iHeight ) );
this.targetRenderSystem.SetScissorTest( true, szLeft, szTop, szRight, szBottom );
}
}
this.targetRenderSystem.UnbindGpuProgram( GpuProgramType.Fragment );
// Can we do a 2-sided stencil?
bool stencil2sided = false;
if ( this.targetRenderSystem.Capabilities.HasCapability( Capabilities.TwoSidedStencil ) &&
this.targetRenderSystem.Capabilities.HasCapability( Capabilities.StencilWrap ) )
{
// enable
stencil2sided = true;
}
// Do we have access to vertex programs?
bool extrudeInSoftware = true;
bool finiteExtrude = !this.shadowUseInfiniteFarPlane ||
!this.targetRenderSystem.Capabilities.HasCapability(
Capabilities.InfiniteFarPlane );
if ( this.targetRenderSystem.Capabilities.HasCapability( Capabilities.VertexPrograms ) )
{
extrudeInSoftware = false;
this.EnableHardwareShadowExtrusion( light, finiteExtrude );
}
else
{
this.targetRenderSystem.UnbindGpuProgram( GpuProgramType.Vertex );
}
// Add light to internal list for use in render call
tmpLightList.Clear();
tmpLightList.Add( light );
// Turn off color writing and depth writing
this.targetRenderSystem.SetColorBufferWriteEnabled( false, false, false, false );
this.targetRenderSystem.DepthBufferWriteEnabled = false;
this.targetRenderSystem.StencilCheckEnabled = true;
this.targetRenderSystem.DepthBufferFunction = CompareFunction.Less;
// Calculate extrusion distance
float extrudeDistance = 0;
if ( light.Type == LightType.Directional )
{
extrudeDistance = this.shadowDirLightExtrudeDist;
}
// get the near clip volume
PlaneBoundedVolume nearClipVol = light.GetNearClipVolume( camera );
// Determine whether zfail is required
// We need to use zfail for ALL objects if we find a single object which
// requires it
bool zfailAlgo = false;
this.CheckShadowCasters( casters,
nearClipVol,
light,
extrudeInSoftware,
finiteExtrude,
zfailAlgo,
camera,
extrudeDistance,
stencil2sided,
tmpLightList );
// revert colour write state
this.targetRenderSystem.SetColorBufferWriteEnabled( true, true, true, true );
// revert depth state
this.targetRenderSystem.SetDepthBufferParams();
this.targetRenderSystem.StencilCheckEnabled = false;
this.targetRenderSystem.UnbindGpuProgram( GpuProgramType.Vertex );
if ( scissored )
{
// disable scissor test
this.targetRenderSystem.SetScissorTest( false );
}
}
private void CheckShadowCasters( IList casters,
PlaneBoundedVolume nearClipVol,
Light light,
bool extrudeInSoftware,
bool finiteExtrude,
bool zfailAlgo,
Camera camera,
float extrudeDistance,
bool stencil2sided,
LightList tmpLightList )
{
int flags;
for ( int i = 0; i < casters.Count; i++ )
{
ShadowCaster caster = (ShadowCaster)casters[ i ];
if ( nearClipVol.Intersects( caster.GetWorldBoundingBox() ) )
{
// We have a zfail case, we must use zfail for all objects
zfailAlgo = true;
break;
}
}
for ( int ci = 0; ci < casters.Count; ci++ )
{
ShadowCaster caster = (ShadowCaster)casters[ ci ];
flags = 0;
if ( light.Type != LightType.Directional )
{
extrudeDistance = caster.GetPointExtrusionDistance( light );
}
if ( !extrudeInSoftware && !finiteExtrude )
{
// hardware extrusion, to infinity (and beyond!)
flags |= (int)ShadowRenderableFlags.ExtrudeToInfinity;
}
if ( zfailAlgo )
{
// We need to include the light and / or dark cap
// But only if they will be visible
if ( camera.IsObjectVisible( caster.GetLightCapBounds() ) )
{
flags |= (int)ShadowRenderableFlags.IncludeLightCap;
}
}
// Dark cap (no dark cap for directional lights using
// hardware extrusion to infinity)
if ( !( ( flags & (int)ShadowRenderableFlags.ExtrudeToInfinity ) != 0 &&
light.Type == LightType.Directional ) &&
camera.IsObjectVisible( caster.GetDarkCapBounds( light, extrudeDistance ) ) )
{
flags |= (int)ShadowRenderableFlags.IncludeDarkCap;
}
// get shadow renderables
IEnumerator renderables = caster.GetShadowVolumeRenderableEnumerator(
this.shadowTechnique, light, this.shadowIndexBuffer, extrudeInSoftware, extrudeDistance, flags );
// If using one-sided stencil, render the first pass of all shadow
// renderables before all the second passes
for ( int i = 0; i < ( stencil2sided ? 1 : 2 ); i++ )
{
if ( i == 1 )
{
renderables = caster.GetLastShadowVolumeRenderableEnumerator();
}
while ( renderables.MoveNext() )
{
ShadowRenderable sr = (ShadowRenderable)renderables.Current;
// omit hidden renderables
if ( sr.IsVisible )
{
// render volume, including dark and (maybe) light caps
this.RenderSingleShadowVolumeToStencil( sr,
zfailAlgo,
stencil2sided,
tmpLightList,
( i > 0 ) );
// optionally render separate light cap
if ( sr.IsLightCapSeperate
&& ( ( flags & (int)ShadowRenderableFlags.IncludeLightCap ) ) > 0 )
{
// must always fail depth check
this.targetRenderSystem.DepthBufferFunction = CompareFunction.AlwaysFail;
Debug.Assert( sr.LightCapRenderable != null,
"Shadow renderable is missing a separate light cap renderable!" );
this.RenderSingleShadowVolumeToStencil( sr.LightCapRenderable,
zfailAlgo,
stencil2sided,
tmpLightList,
( i > 0 ) );
// reset depth function
this.targetRenderSystem.DepthBufferFunction = CompareFunction.Less;
}
}
}
}
}
}
/// <summary>
/// Internal method for queueing the sky objects with the params as
/// previously set through SetSkyBox, SetSkyPlane and SetSkyDome.
/// </summary>
/// <param name="camera"></param>
internal virtual void QueueSkiesForRendering( Camera camera )
{
// translate the skybox by cam position
if ( this.skyPlaneNode != null )
{
this.skyPlaneNode.Position = camera.DerivedPosition;
}
if ( this.skyBoxNode != null )
{
this.skyBoxNode.Position = camera.DerivedPosition;
}
if ( this.skyDomeNode != null )
{
this.skyDomeNode.Position = camera.DerivedPosition;
}
RenderQueueGroupID qid;
// if the skyplane is enabled, queue up the single plane
if ( this.isSkyPlaneEnabled )
{
qid = this.isSkyPlaneDrawnFirst ? RenderQueueGroupID.SkiesEarly : RenderQueueGroupID.SkiesLate;
this.GetRenderQueue().AddRenderable( this.skyPlaneEntity.GetSubEntity( 0 ), 1, qid );
}
// if the skybox is enabled, queue up all the planes
if ( this.isSkyBoxEnabled )
{
qid = this.isSkyBoxDrawnFirst ? RenderQueueGroupID.SkiesEarly : RenderQueueGroupID.SkiesLate;
for ( int plane = 0; plane < 6; plane++ )
{
this.GetRenderQueue().AddRenderable( this.skyBoxEntities[ plane ].GetSubEntity( 0 ), 1, qid );
}
}
// if the skydome is enabled, queue up all the planes
if ( this.isSkyDomeEnabled )
{
qid = this.isSkyDomeDrawnFirst ? RenderQueueGroupID.SkiesEarly : RenderQueueGroupID.SkiesLate;
for ( int plane = 0; plane < 5; ++plane )
{
this.GetRenderQueue().AddRenderable( this.skyDomeEntities[ plane ].GetSubEntity( 0 ), 1, qid );
}
}
}
/// <summary>
/// Prompts the class to send its contents to the renderer.
/// </summary>
/// <remarks>
/// This method prompts the scene manager to send the
/// contents of the scene it manages to the rendering
/// pipeline, possibly preceded by some sorting, culling
/// or other scene management tasks. Note that this method is not normally called
/// directly by the user application; it is called automatically
/// by the engine's rendering loop.
/// </remarks>
/// <param name="camera">Pointer to a camera from whose viewpoint the scene is to be rendered.</param>
/// <param name="viewport">The target viewport</param>
/// <param name="showOverlays">Whether or not any overlay objects should be rendered</param>
protected internal void RenderScene( Camera camera, Viewport viewport, bool showOverlays )
{
// let the engine know this is the current scene manager
Root.Instance.SceneManager = this;
if ( this.IsShadowTechniqueInUse )
{
// initialize shadow volume materials
this.InitShadowVolumeMaterials();
}
// Perform a quick pre-check to see whether we should override far distance
// When using stencil volumes we have to use infinite far distance
// to prevent dark caps getting clipped
if ( this.IsShadowTechniqueStencilBased &&
camera.Far != 0 &&
this.targetRenderSystem.Capabilities.HasCapability( Capabilities.InfiniteFarPlane ) &&
this.shadowUseInfiniteFarPlane )
{
// infinite far distance
camera.Far = 0.0f;
}
this.cameraInProgress = camera;
this.hasCameraChanged = true;
// Update the scene, only do this once per frame
ulong thisFrameNumber = Root.Instance.CurrentFrameCount;
if ( thisFrameNumber != this.lastFrameNumber )
{
// Update animations
this.ApplySceneAnimations();
// Update controllers
ControllerManager.Instance.UpdateAll();
this.lastFrameNumber = thisFrameNumber;
}
// Update scene graph for this camera (can happen multiple times per frame)
this.UpdateSceneGraph( camera );
// Auto-track nodes
foreach ( SceneNode sn in autoTrackingSceneNodes.Values )
{
sn.AutoTrack();
}
// ask the camera to auto track if it has a target
camera.AutoTrack();
// Are we using any shadows at all?
if ( this.IsShadowTechniqueInUse && this.illuminationStage != IlluminationRenderStage.RenderToTexture &&
viewport.ShowShadows && this.findVisibleObjects )
{
// Locate any lights which could be affecting the frustum
this.FindLightsAffectingFrustum( camera );
if ( this.IsShadowTechniqueTextureBased )
{
// *******
// WARNING
// *******
// This call will result in re-entrant calls to this method
// therefore anything which comes before this is NOT
// guaranteed persistent. Make sure that anything which
// MUST be specific to this camera / target is done
// AFTER THIS POINT
this.PrepareShadowTextures( camera, viewport );
// reset the cameras because of the re-entrant call
this.cameraInProgress = camera;
this.hasCameraChanged = true;
}
}
// Invert vertex winding?
this.targetRenderSystem.InvertVertexWinding = camera.IsReflected;
// Tell params about viewport
this.autoParamDataSource.Viewport = viewport;
// Set the viewport
this.SetViewport( viewport );
// set the current camera for use in the auto GPU program params
this.autoParamDataSource.Camera = camera;
// Set autoparams for finite dir light extrusion
this.autoParamDataSource.SetShadowDirLightExtrusionDistance( this.shadowDirLightExtrudeDist );
// sets the current ambient light color for use in auto GPU program params
this.autoParamDataSource.AmbientLight = this.ambientColor;
// Tell rendersystem
this.targetRenderSystem.AmbientLight = this.ambientColor;
// Tell params about render target
this.autoParamDataSource.RenderTarget = viewport.Target;
// set fog params
float fogScale = 1f;
if ( this.fogMode == FogMode.None )
{
fogScale = 0f;
}
this.autoParamDataSource.FogParams = new Vector4( this.fogStart, this.fogEnd, fogScale, 0 );
// set the time in the auto param data source
//autoParamDataSource.Time = ((float)Root.Instance.Timer.Milliseconds) / 1000f;
// Set camera window clipping planes (if any)
if ( this.targetRenderSystem.Capabilities.HasCapability( Capabilities.UserClipPlanes ) )
{
// TODO: Add ClipPlanes to RenderSystem.cs
if ( camera.IsWindowSet )
{
targetRenderSystem.ResetClipPlanes();
IList<Plane> planeList = camera.WindowPlanes;
for ( ushort i = 0; i < 4; ++i )
{
targetRenderSystem.AddClipPlane( planeList[ i ] );
//this.targetRenderSystem.EnableClipPlane( i, true );
//this.targetRenderSystem.SetClipPlane( i, planeList[ i ] );
}
}
// this disables any user-set clipplanes... this should be done manually
//else
//{
// for (ushort i = 0; i < 4; ++i)
// {
// targetRenderSystem.EnableClipPlane(i, false);
// }
//}
}
// Prepare render queue for receiving new objects
this.PrepareRenderQueue();
// Parse the scene and tag visibles
if ( this.findVisibleObjects )
{
if ( this.PreFindVisibleObjects != null )
PreFindVisibleObjects( this, this.illuminationStage, viewport );
this.FindVisibleObjects( camera, this.illuminationStage == IlluminationRenderStage.RenderToTexture );
if ( this.PostFindVisibleObjects != null )
PostFindVisibleObjects( this, this.illuminationStage, viewport );
}
// Add overlays, if viewport deems it
if ( viewport.ShowOverlays && this.illuminationStage != IlluminationRenderStage.RenderToTexture )
{
// Queue overlays for rendering
OverlayManager.Instance.QueueOverlaysForRendering( camera, this.GetRenderQueue(), viewport );
}
// queue overlays and skyboxes for rendering
if ( viewport.ShowSkies && this.findVisibleObjects &&
this.illuminationStage != IlluminationRenderStage.RenderToTexture )
{
this.QueueSkiesForRendering( camera );
}
// begin frame geometry count
this.targetRenderSystem.BeginGeometryCount();
// clear the device if need be
if ( viewport.ClearEveryFrame )
{
this.targetRenderSystem.ClearFrameBuffer( viewport.ClearBuffers, viewport.BackgroundColor );
}
// being a frame of animation
this.targetRenderSystem.BeginFrame();
// use the camera's current scene detail level
this.targetRenderSystem.PolygonMode = camera.PolygonMode;
// Set initial camera state
this.targetRenderSystem.ProjectionMatrix = camera.ProjectionMatrixRS;
this.targetRenderSystem.ViewMatrix = camera.ViewMatrix;
// render all visible objects
this.RenderVisibleObjects();
// end the current frame
this.targetRenderSystem.EndFrame();
// Notify camera of the number of rendered faces
camera.NotifyRenderedFaces( this.targetRenderSystem.FaceCount );
// Notify camera of the number of rendered batches
camera.NotifyRenderedBatches( this.targetRenderSystem.BatchCount );
}
/// <summary>
/// Creates a camera to be managed by this scene manager.
/// </summary>
/// <remarks>
/// This camera can be added to the scene at a later time using
/// the AttachObject method of the SceneNode class.
/// </remarks>
/// <param name="name"></param>
/// <returns></returns>
public virtual Camera CreateCamera( string name )
{
if ( this.cameraList.ContainsKey( name ) )
{
throw new AxiomException( string.Format( "A camera with the name '{0}' already exists in the scene.",
name ) );
}
// create the camera and add it to our local list
Camera camera = new Camera( name, this );
this.cameraList.Add( camera );
return camera;
}
/// <summary>
/// Internal method which parses the scene to find visible objects to render.
/// </summary>
/// <remarks>
/// If you're implementing a custom scene manager, this is the most important method to
/// override since it's here you can apply your custom world partitioning scheme. Once you
/// have added the appropriate objects to the render queue, you can let the default
/// SceneManager objects RenderVisibleObjects handle the actual rendering of the objects
/// you pick.
/// <p/>
/// Any visible objects will be added to a rendering queue, which is indexed by material in order
/// to ensure objects with the same material are rendered together to minimise render state changes.
/// </remarks>
public virtual void FindVisibleObjects( Camera camera, bool onlyShadowCasters )
{
// ask the root node to iterate through and find visible objects in the scene
this.rootSceneNode.FindVisibleObjects( camera,
this.GetRenderQueue(),
true,
this.displayNodes,
onlyShadowCasters );
}
public override void NotifyCurrentCamera( Camera camera )
{
if ( parentNode != null )
{
// Get mesh lod strategy
var meshStrategy = this.mesh.LodStrategy;
// Get the appropriate lod value
Real lodValue = meshStrategy.GetValue( this, camera );
// Bias the lod value
var biasedMeshLodValue = lodValue*this.meshLodFactorTransformed;
// Get the index at this biased depth
var newMeshLodIndex = this.mesh.GetLodIndex( biasedMeshLodValue );
// Apply maximum detail restriction (remember lower = higher detail)
this.meshLodIndex = (int)Utility.Max( this.maxMeshLodIndex, this.meshLodIndex );
// Apply minimum detail restriction (remember higher = lower detail)
this.meshLodIndex = (int)Utility.Min( this.minMeshLodIndex, this.meshLodIndex );
// Construct event object
EntityMeshLodChangedEvent evt;
evt.Entity = this;
evt.Camera = camera;
evt.LodValue = biasedMeshLodValue;
evt.PreviousLodIndex = this.meshLodIndex;
evt.NewLodIndex = newMeshLodIndex;
// Notify lod event listeners
//camera.SceneManager.NotifyEntityMeshLodChanged( evt );
// Change lod index
this.meshLodIndex = evt.NewLodIndex;
// Now do material LOD
lodValue *= this.materialLodFactorTransformed;
// apply the material LOD to all sub entities
foreach ( var subEntity in this.subEntityList )
{
// Get sub-entity material
var material = subEntity.Material;
// Get material lod strategy
var materialStrategy = material.LodStrategy;
// Recalculate lod value if strategies do not match
Real biasedMaterialLodValue;
if ( meshStrategy == materialStrategy )
{
biasedMaterialLodValue = lodValue;
}
else
{
biasedMaterialLodValue = materialStrategy.GetValue( this, camera )*
materialStrategy.TransformBias( this.materialLodFactor );
}
// Get the index at this biased depth
var idx = material.GetLodIndex( biasedMaterialLodValue );
// Apply maximum detail restriction (remember lower = higher detail)
idx = (int)Utility.Max( this.maxMaterialLodIndex, idx );
// Apply minimum detail restriction (remember higher = lower detail)
idx = (int)Utility.Min( this.minMaterialLodIndex, idx );
// Construct event object
EntityMaterialLodChangedEvent materialLodEvent;
materialLodEvent.SubEntity = subEntity;
materialLodEvent.Camera = camera;
materialLodEvent.LodValue = biasedMaterialLodValue;
materialLodEvent.PreviousLodIndex = subEntity.MaterialLodIndex;
materialLodEvent.NewLodIndex = idx;
// Notify lod event listeners
//camera.SceneManager.NotifyEntityMaterialLodChanged( materialLodEvent );
// Change lod index
subEntity.MaterialLodIndex = materialLodEvent.NewLodIndex;
// Also invalidate any camera distance cache
//subEntity.InvalidateCameraCache();
}
}
// Notify child objects (tag points)
foreach ( var child in this.childObjectList.Values )
{
child.NotifyCurrentCamera( camera );
}
}
/// <summary>
/// Internal method for preparing shadow textures ready for use in a regular render
/// </summary>
/// <param name="camera"></param>
/// <param name="viewPort"></param>
protected internal virtual void PrepareShadowTextures( Camera camera, Viewport viewPort )
{
// Set the illumination stage, prevents recursive calls
IlluminationRenderStage savedStage = this.illuminationStage;
this.illuminationStage = IlluminationRenderStage.RenderToTexture;
// Determine far shadow distance
float shadowDist = this.shadowFarDistance;
if ( shadowDist == 0.0f )
{
// need a shadow distance, make one up
shadowDist = camera.Near * 300;
}
// set fogging to hide the shadow edge
float shadowOffset = shadowDist * this.shadowTextureOffset;
// Precalculate fading info
float shadowEnd = shadowDist + shadowOffset;
float fadeStart = shadowEnd * this.shadowTextureFadeStart;
float fadeEnd = shadowEnd * this.shadowTextureFadeEnd;
// Additive lighting should not use fogging, since it will overbrighten; use border clamp
if ( !this.IsShadowTechniqueAdditive )
{
this.shadowReceiverPass.SetFog( true,
FogMode.Linear,
ColorEx.White,
0,
fadeStart,
fadeEnd );
// if we have a custom receiver material, then give it the fog params too
if ( this.shadowTextureCustomReceiverPass != null )
{
this.shadowTextureCustomReceiverPass.SetFog( true,
FogMode.Linear,
ColorEx.White,
0,
fadeStart,
fadeEnd );
}
}
else
{
// disable fogging explicitly
this.shadowReceiverPass.SetFog( true, FogMode.None );
// if we have a custom receiver material, then give it the fog params too
if ( this.shadowTextureCustomReceiverPass != null )
{
this.shadowTextureCustomReceiverPass.SetFog( true, FogMode.None );
}
}
// Iterate over the lights we've found, max out at the limit of light textures
int sti = 0;
foreach ( Light light in this.lightsAffectingFrustum )
{
// Check limit reached
if ( sti == this.shadowTextures.Count )
break;
// Skip non-shadowing lights
if ( !light.CastShadows )
{
continue;
}
Texture shadowTex = this.shadowTextures[ sti ];
RenderTarget shadowRTT = shadowTex.GetBuffer().GetRenderTarget();
Viewport shadowView = shadowRTT.GetViewport( 0 );
Camera texCam = this.shadowTextureCameras[ sti ];
// rebind camera, incase another SM in use which has switched to its cam
shadowView.Camera = texCam;
// Associate main view camera as LOD camera
texCam.LodCamera = camera;
//Vector3 dir;
// set base
if ( light.Type == LightType.Point )
texCam.Direction = light.DerivedDirection;
if ( light.Type == LightType.Directional )
texCam.Position = light.DerivedPosition;
// Use the material scheme of the main viewport
// This is required to pick up the correct shadow_caster_material and similar properties.
shadowView.MaterialScheme = viewPort.MaterialScheme;
if ( light.CustomShadowCameraSetup == null )
{
_defaultShadowCameraSetup.GetShadowCamera( this, camera, viewPort, light, texCam, sti );
}
else
{
light.CustomShadowCameraSetup.GetShadowCamera( this, camera, viewPort, light, texCam, sti );
}
shadowView.BackgroundColor = ColorEx.White;
// Fire shadow caster update, callee can alter camera settings
// fireShadowTexturesPreCaster(light, texCam);
// Update target
shadowRTT.Update();
++sti;
}
// Set the illumination stage, prevents recursive calls
this.illuminationStage = savedStage;
//fireShadowTexturesUpdated( std::min(mLightsAffectingFrustum.size(), mShadowTextures.size()));
}
public override float GetSquaredViewDepth(Axiom.Core.Camera camera)
{
// Use squared length to avoid square root
return((this.ParentNode.DerivedPosition - camera.DerivedPosition).LengthSquared);
}
/// <summary>
/// Prepare the listener for use with a set of parameters.
/// </summary>
/// <param name="lightInFrustum"></param>
/// <param name="lightClipVolumes"></param>
/// <param name="light"></param>
/// <param name="camera"></param>
/// <param name="shadowCasterList"></param>
/// <param name="farDistSquared"></param>
public void Prepare( bool lightInFrustum,
PlaneBoundedVolumeList lightClipVolumes,
Light light,
Camera camera,
List<ShadowCaster> shadowCasterList,
float farDistSquared )
{
this.casterList = shadowCasterList;
this.isLightInFrustum = lightInFrustum;
this.lightClipVolumeList = lightClipVolumes;
this.camera = camera;
this.light = light;
this.farDistSquared = farDistSquared;
}
/// <summary>
/// Walks the BSP tree looking for the node which the camera is in, and tags any geometry
/// which is in a visible leaf for later processing.
/// </summary>
protected BspNode WalkTree( Camera camera, bool onlyShadowCasters )
{
if ( this.level == null )
{
return null;
}
// Locate the leaf node where the camera is located
BspNode cameraNode = this.level.FindLeaf( camera.DerivedPosition );
this.matFaceGroupMap.Clear();
this.faceGroupChecked.Clear();
// Scan through all the other leaf nodes looking for visibles
int i = this.level.NumNodes - this.level.LeafStart;
int p = this.level.LeafStart;
BspNode node;
while ( i-- > 0 )
{
node = this.level.Nodes[ p ];
if ( this.level.IsLeafVisible( cameraNode, node ) )
{
// Visible according to PVS, check bounding box against frustum
//if ( camera.IsObjectVisible( node.BoundingBox ) )
{
ProcessVisibleLeaf( node, camera, onlyShadowCasters );
if ( this.showNodeAABs )
{
AddBoundingBox( node.BoundingBox, true );
}
}
}
p++;
}
return cameraNode;
}
public override Real GetSquaredViewDepth( Camera camera )
{
return 0;
}
/// <summary>
/// Tags geometry in the leaf specified for later rendering.
/// </summary>
protected void ProcessVisibleLeaf( BspNode leaf, Camera camera, bool onlyShadowCasters )
{
// Skip world geometry if we're only supposed to process shadow casters
// World is pre-lit
if ( !onlyShadowCasters )
{
// Parse the leaf node's faces, add face groups to material map
int numGroups = leaf.NumFaceGroups;
int idx = leaf.FaceGroupStart;
while ( numGroups-- > 0 )
{
int realIndex = this.level.LeafFaceGroups[ idx++ ];
// Is it already checked ?
if ( this.faceGroupChecked.ContainsKey( realIndex ) && this.faceGroupChecked[ realIndex ] == true )
{
continue;
}
this.faceGroupChecked[ realIndex ] = true;
BspStaticFaceGroup faceGroup = this.level.FaceGroups[ realIndex ];
// Get Material reference by handle
Material mat = GetMaterial( faceGroup.materialHandle );
// Check normal (manual culling)
ManualCullingMode cullMode = mat.GetTechnique( 0 ).GetPass( 0 ).ManualCullingMode;
if ( cullMode != ManualCullingMode.None )
{
float dist = faceGroup.plane.GetDistance( camera.DerivedPosition );
if ( ( ( dist < 0 ) && ( cullMode == ManualCullingMode.Back ) ) ||
( ( dist > 0 ) && ( cullMode == ManualCullingMode.Front ) ) )
{
continue;
}
}
// Try to insert, will find existing if already there
this.matFaceGroupMap.Add( mat, faceGroup );
}
}
// Add movables to render queue, provided it hasn't been seen already.
foreach ( MovableObject obj in leaf.Objects.Values )
{
if ( !this.objectsForRendering.ContainsKey( obj.Name ) )
{
if ( obj.IsVisible && ( !onlyShadowCasters || obj.CastShadows ) &&
camera.IsObjectVisible( obj.GetWorldBoundingBox() ) )
{
obj.NotifyCurrentCamera( camera );
obj.UpdateRenderQueue( renderQueue );
// Check if the bounding box should be shown.
var node = (SceneNode)obj.ParentNode;
if ( node.ShowBoundingBox || showBoundingBoxes )
{
node.AddBoundingBoxToQueue( renderQueue );
}
this.objectsForRendering.Add( obj );
}
}
}
}
protected void CreateCamera()
{
camera = scene.CreateCamera("PlayerCam");
ResetCameraPosition();
camera.Near = 1 * oneMeter;
camera.Far = 10000 * oneMeter;
camera.AspectRatio = (float)window.Width / window.Height;
}
/** called when the scene manager creates a camera in order to store the first camera created as the primary one, for determining error metrics and the 'home' terrain page. */ public abstract void NotifyCameraCreated( Camera c );
