public RenderBatch(GraphicsDevice device, int primitivesPerBatch, bool enableAlphaBlend)
{
this.device = device;
if (enableAlphaBlend)
{
BasicEffect be = new BasicEffect(device);
Effect = be;
fxMatrices = be;
be.TextureEnabled = true;
be.VertexColorEnabled = true;
be.LightingEnabled = false;
fxParamTexture = Effect.Parameters["Texture"];
}
else
{
AlphaTestEffect ate = new AlphaTestEffect(device);
Effect = ate;
fxMatrices = ate;
ate.VertexColorEnabled = true;
ate.ReferenceAlpha = 128;
fxParamTexture = Effect.Parameters["Texture"];
}
this.maxPrimitivesPerBatch = primitivesPerBatch;
}
public void Draw(Matrix world, Matrix view, Matrix projection)
{
int count = this.bones.Count;
if (Model.sharedDrawBoneMatrices == null || Model.sharedDrawBoneMatrices.Length < count)
{
Model.sharedDrawBoneMatrices = new Matrix[count];
}
this.CopyAbsoluteBoneTransformsTo(Model.sharedDrawBoneMatrices);
foreach (ModelMesh modelMesh in (ReadOnlyCollection <ModelMesh>) this.Meshes)
{
foreach (Effect effect in modelMesh.Effects)
{
IEffectMatrices effectMatrices = effect as IEffectMatrices;
if (effectMatrices == null)
{
throw new InvalidOperationException();
}
effectMatrices.World = Model.sharedDrawBoneMatrices[modelMesh.ParentBone.Index] * world;
effectMatrices.View = view;
effectMatrices.Projection = projection;
}
modelMesh.Draw();
}
}
private void DrawAllModels(IEffectMatrices effect)
{
foreach (var entity in ActiveEntities)
{
if (_modelMapper.Has(entity))
{
var model = _modelMapper.Get(entity).Model;
var transform = _transformMapper.Get(entity);
if (model.VertexBuffer != null && model.IndexBuffer != null & model.PrimitiveCount != 0)
{
var sphere = BoundingSphere.CreateFromBoundingBox(model.BoundingBox);
if (CameraSystem.ActiveLens.BoundingFrustum.Intersects(sphere.Transform(transform.WorldMatrix)))
{
effect.World = transform.WorldMatrix;
DrawMesh((Effect)effect, model, _graphicsDevice);
}
}
}
else if (_primitiveMapper.Has(entity))
{
var primitive = _primitiveMapper.Get(entity);
var transform = _transformMapper.Get(entity);
effect.World = transform.WorldMatrix;
Primitives.Instance.Draw((Effect)effect, primitive.Type);
}
}
}
public RenderBatch(GraphicsDevice device, int primitivesPerBatch, bool enableAlphaBlend)
{
this.device = device;
if (enableAlphaBlend)
{
BasicEffect be = new BasicEffect(device);
Effect = be;
fxMatrices = be;
be.TextureEnabled = true;
be.VertexColorEnabled = true;
be.LightingEnabled = false;
fxParamTexture = Effect.Parameters["Texture"];
}
else
{
AlphaTestEffect ate = new AlphaTestEffect(device);
Effect = ate;
fxMatrices = ate;
ate.VertexColorEnabled = true;
ate.ReferenceAlpha = 128;
fxParamTexture = Effect.Parameters["Texture"];
}
this.maxPrimitivesPerBatch = primitivesPerBatch;
}
/// <summary>
/// Draws the model meshes.
/// </summary>
/// <param name="world">The world transform.</param>
/// <param name="view">The view transform.</param>
/// <param name="projection">The projection transform.</param>
public void Draw(Matrix world, Matrix view, Matrix projection)
{
int boneCount = this.Bones.Count;
if (sharedDrawBoneMatrices == null ||
sharedDrawBoneMatrices.Length < boneCount)
{
sharedDrawBoneMatrices = new Matrix[boneCount];
}
// Look up combined bone matrices for the entire model.
CopyAbsoluteBoneTransformsTo(sharedDrawBoneMatrices);
// Draw the model.
foreach (ModelMesh mesh in Meshes)
{
foreach (Effect effect in mesh.Effects)
{
IEffectMatrices effectMatricies = effect as IEffectMatrices;
if (effectMatricies == null)
{
throw new InvalidOperationException();
}
effectMatricies.World = sharedDrawBoneMatrices[mesh.ParentBone.Index] * world;
effectMatricies.View = view;
effectMatricies.Projection = projection;
}
mesh.Draw();
}
}
public override void Update(BaseCamera camera, ref Matrix world)
{
// Matrices
IEffectMatrices effectMatrices = (IEffectMatrices)_effect;
effectMatrices.World = world;
effectMatrices.View = camera.View;
effectMatrices.Projection = camera.Projection;
}
/// <summary>
/// Applies this camera to the specified effect.
/// </summary>
/// <param name="effect">The effect to apply this camera to.</param>
public void ApplyTo(IEffectMatrices effectMatrices)
{
if (_isDirty)
{
Recalculate();
}
effectMatrices.View = _view;
effectMatrices.Projection = _projection;
}
internal static void SetViewport(this IEffectMatrices effect, Rectangle viewport)
{
if (effect != null)
{
Matrix projection = Matrix.CreateOrthographicOffCenter(viewport.Left, viewport.Right, viewport.Bottom, viewport.Top, 0, 1);
Matrix halfPixelOffset = Matrix.CreateTranslation(-0.5f, -0.5f, 0);
effect.World = Matrix.Identity;
effect.View = Matrix.Identity;
effect.Projection = halfPixelOffset * projection;
}
}
public static Vector2 GetOrtho(Vector3 v3)
{
Vector2 output = Vector2.Zero;
IEffectMatrices eff = View.basicEffect;
Matrix worldViewProjection = eff.World * eff.View * eff.Projection;
Vector4 result = Vector4.Transform(v3, worldViewProjection);
result /= result.W;
Viewport vp = Program.MainView.graphics.GraphicsDevice.Viewport;
Matrix invClient = Matrix.Invert(Matrix.CreateOrthographicOffCenter(0, vp.Width, vp.Height, 0, -1, 1));
output = Vector2.Transform(new Vector2(result.X, result.Y), invClient);
return(output);
}
public override void Draw(GameTime gameTime)
{
if (_terrainModel.Effect is IEffectMatrices)
{
IEffectMatrices effectMatrices = (IEffectMatrices)_terrainModel.Effect;
effectMatrices.World = Matrix.Identity;
effectMatrices.View = _camera.View;
effectMatrices.Projection = _camera.Projection;
}
/*GraphicsDevice.RasterizerState = new RasterizerState
* {
* FillMode = FillMode.WireFrame
* };*/
_terrainModel.Draw();
}
/// <summary>
/// Normal Drawn Function.
/// </summary>
/// <param name="gt">The gt.</param>
/// <param name="obj">The obj.</param>
/// <param name="cam">The cam.</param>
/// <param name="lights">The lights.</param>
/// <param name="render">The render.</param>
public void Drawn(GameTime gt, PloobsEngine.SceneControl.IObject obj, PloobsEngine.Cameras.ICamera cam, System.Collections.Generic.IList <PloobsEngine.Light.ILight> lights, PloobsEngine.SceneControl.RenderHelper render)
{
if (first)
{
_terrainModel.Initialize(cam, render.device);
first = false;
}
if (_terrainModel.Effect is IEffectMatrices)
{
IEffectMatrices effectMatrices = (IEffectMatrices)_terrainModel.Effect;
effectMatrices.World = obj.WorldMatrix;
effectMatrices.View = cam.View;
effectMatrices.Projection = cam.Projection;
}
render.SetSamplerStates(SamplerState.LinearWrap, 6);
_terrainModel.Draw();
render.SetSamplerStates(ginfo.SamplerState, 6);
}
public void Draw(Matrix world, Matrix view, Matrix projection)
{
Matrix[] destinationBoneTransforms = new Matrix[this.bones.Count];
this.CopyAbsoluteBoneTransformsTo(destinationBoneTransforms);
foreach (ModelMesh modelMesh in (ReadOnlyCollection <ModelMesh>) this.Meshes)
{
foreach (Effect effect in modelMesh.Effects)
{
IEffectMatrices effectMatrices = effect as IEffectMatrices;
if (effectMatrices == null)
{
throw new InvalidOperationException();
}
effectMatrices.World = destinationBoneTransforms[modelMesh.ParentBone.Index] * world;
effectMatrices.View = view;
effectMatrices.Projection = projection;
}
modelMesh.Draw();
}
}
public override void Draw(GraphicsDevice graphicsDevice, Matrix cameraRotation, Matrix view, Matrix projection)
{
Viewport savedViewport = graphicsDevice.Viewport;
graphicsDevice.Viewport = new Viewport(
graphicsDevice.Viewport.Width - _size,
0, _size, _size);
graphicsDevice.DepthStencilState = DepthStencilState.None;
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.RasterizerState = new RasterizerState
{
FillMode = FillMode.Solid
};
if (_effect is IEffectMatrices)
{
IEffectMatrices effectMatrices = (IEffectMatrices)_effect;
effectMatrices.World = cameraRotation;
}
if (_effect is BasicEffect)
{
((BasicEffect)_effect).Alpha = _isCubeActive ? 1.0f : 0.7f; // TODO: Make non-hover alpha configurable.
}
graphicsDevice.Indices = _cubeIndices;
graphicsDevice.SetVertexBuffer(_cubeVertices);
foreach (EffectPass pass in _effect.CurrentTechnique.Passes)
{
pass.Apply();
graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0,
_cubeVertices.VertexCount, 0, _cubeIndices.IndexCount / 3);
}
graphicsDevice.Indices = null;
graphicsDevice.Viewport = savedViewport;
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
}
public override void Draw(GraphicsDevice graphicsDevice, Matrix cameraRotation, Matrix view, Matrix projection)
{
if (!_options.ShowGrid)
{
return;
}
if (_lineEffect is IEffectMatrices)
{
IEffectMatrices effectMatrices = (IEffectMatrices)_lineEffect;
effectMatrices.World = Matrix.Identity;
effectMatrices.View = view;
effectMatrices.Projection = projection;
}
graphicsDevice.SetVertexBuffer(_lineBuffer);
foreach (EffectPass pass in _lineEffect.CurrentTechnique.Passes)
{
pass.Apply();
graphicsDevice.DrawPrimitives(PrimitiveType.LineList, 0,
_lineBuffer.VertexCount / 2);
}
}
public virtual void Apply()
{
GraphicsDevice.BlendState = this.BlendState;
GraphicsDevice.DepthStencilState = this.DepthStencilState;
GraphicsDevice.RasterizerState = this.RasterizerState;
for (int i = 0; i < NumberOfTextures; i++)
{
if (this.SamplerStates[i] != null)
{
GraphicsDevice.SamplerStates[i] = this.SamplerStates[i];
}
}
IEffectMatrices effectMatrices = _effect as IEffectMatrices;
if (effectMatrices != null)
{
effectMatrices.World = this.World;
effectMatrices.View = this.View;
effectMatrices.Projection = this.Projection;
}
_effect.CurrentTechnique.Passes[0].Apply();
}
/// <summary>
/// Draws the model using the specified camera matrices and the default
/// lighting model.
/// </summary>
public void Draw(Matrix world, Matrix view, Matrix projection)
{
foreach (var part in modelParts)
{
// use the new effect interfaces so this code will still work
// even if someone changes the effect on the part to a new type.
IEffectMatrices matrices = part.Effect as IEffectMatrices;
if (matrices != null)
{
matrices.World = world;
matrices.View = view;
matrices.Projection = projection;
}
IEffectLights lights = part.Effect as IEffectLights;
if (lights != null)
{
lights.EnableDefaultLighting();
}
part.Draw();
}
}
/// <summary>
/// Simple model drawing method. The interesting part here is that
/// the view and projection matrices are taken from the camera object.
/// </summary>
private void DrawModel(Model model, Matrix world)
{
Matrix[] transforms = new Matrix[model.Bones.Count];
model.CopyAbsoluteBoneTransformsTo(transforms);
foreach (ModelMesh mesh in model.Meshes)
{
foreach (Effect effect in mesh.Effects)
{
if (effect is BasicEffect)
{
((BasicEffect)effect).EnableDefaultLighting();
}
if (effect is IEffectMatrices)
{
IEffectMatrices effectMatrices = (IEffectMatrices)effect;
effectMatrices.World = transforms[mesh.ParentBone.Index] * world;
effectMatrices.View = camera.View;
effectMatrices.Projection = camera.Projection;
}
}
mesh.Draw();
}
}
public static void Apply(IEffectMatrices effect)
{
effect.View = MainCamera.ViewMatrix;
effect.Projection = MainCamera.ProjectionMatrix;
}
public void SetEffect <TEffect>(TEffect effect)
where TEffect : Effect, IEffectMatrices
{
Effect = effect;
EffectMatrices = effect;
}
private void DrawMesh(ModelMesh mesh, bool opaque, Matrix world, Matrix view, Matrix projection, Vector3?color)
{
int count = mesh.MeshParts.Count;
for (int i = 0; i < count; i++)
{
ModelMeshPart part = mesh.MeshParts[i];
Effect effect = part.Effect;
Vector3 diffuseColor = Vector3.One;
bool textureEnabled = false, lightingEnabled = false, vertexColorEnabled = false;
float alpha = 1.0f;
BasicEffect basicEffect = effect as BasicEffect;
if (basicEffect != null)
{
if (basicEffect.Alpha < 1.0f && opaque)
{
continue;
}
if (basicEffect.Alpha == 1.0f && !opaque)
{
continue;
}
basicEffect.PreferPerPixelLighting = true;
basicEffect.SpecularPower = 16;
if (color != null)
{
diffuseColor = basicEffect.DiffuseColor;
textureEnabled = basicEffect.TextureEnabled;
lightingEnabled = basicEffect.LightingEnabled;
vertexColorEnabled = basicEffect.VertexColorEnabled;
alpha = basicEffect.Alpha;
basicEffect.DiffuseColor = color.Value;
basicEffect.TextureEnabled = false;
basicEffect.LightingEnabled = false;
basicEffect.VertexColorEnabled = false;
basicEffect.Alpha = _options.SolidAndWireframeAlpha;
}
}
IEffectMatrices effectMatrices = effect as IEffectMatrices;
if (effectMatrices != null)
{
effectMatrices.World = _boneTransforms[mesh.ParentBone.Index] * world;
effectMatrices.View = view;
effectMatrices.Projection = projection;
}
else
{
EffectParameter wvp = effect.Parameters.GetParameterBySemantic("WORLDVIEWPROJECTION");
if (wvp != null)
{
wvp.SetValue(_boneTransforms[mesh.ParentBone.Index] * world * view * projection);
}
EffectParameter w = effect.Parameters.GetParameterBySemantic("WORLD");
if (w != null)
{
w.SetValue(_boneTransforms[mesh.ParentBone.Index] * world);
}
EffectParameter v = effect.Parameters.GetParameterBySemantic("VIEW");
if (v != null)
{
v.SetValue(view);
}
EffectParameter p = effect.Parameters.GetParameterBySemantic("PROJECTION");
if (p != null)
{
p.SetValue(projection);
}
}
IEffectLights effectLights = effect as IEffectLights;
if (effectLights != null)
{
effectLights.EnableDefaultLighting();
}
int passes = effect.CurrentTechnique.Passes.Count;
for (int j = 0; j < passes; j++)
{
effect.CurrentTechnique.Passes[j].Apply();
DrawMeshPart(part);
}
if (basicEffect != null && color != null)
{
basicEffect.DiffuseColor = diffuseColor;
basicEffect.Alpha = alpha;
basicEffect.TextureEnabled = textureEnabled;
basicEffect.LightingEnabled = lightingEnabled;
basicEffect.VertexColorEnabled = vertexColorEnabled;
}
}
}
private void ConfigureEffectMatrices(IEffectMatrices effect, Matrix world, Matrix view, Matrix projection)
{
effect.World = world;
effect.View = view;
effect.Projection = projection;
}
public void Apply(IEffectMatrices effect)
{
effect.View = View;
}
public void SetEffect(Effect effect)
{
Effect = effect;
EffectMatrices = null;
}
private void SetCamera(IEffectMatrices effect)
{
effect.View = Matrix.CreateLookAt(new Vector3(0, 1, 6), new Vector3(0, 1, 0), Vector3.Up);
effect.Projection = Matrix.CreatePerspective(AspectRatio, 1, 2, 20);
}
private void SetCamera(IEffectMatrices effect)
{
//from beats 37 to 40, after chessboard fades, camera altitude and target lerp to 0
var cameraY = MathHelper.SmoothStep(1, 0, (Beat - 37) / 3F);
effect.View = Matrix.CreateLookAt(new Vector3(0, cameraY, 8F), new Vector3(0, cameraY, 0), Vector3.Up);
effect.Projection = Matrix.CreatePerspective(AspectRatio, 1, 3F, 100);
}
/// <summary>
/// Applies this camera to the specified effect.
/// </summary>
/// <param name="effect">The effect to apply this camera to.</param>
public void ApplyTo(IEffectMatrices effectMatrices)
{
if (_isDirty)
Recalculate();
effectMatrices.View = _view;
effectMatrices.Projection = _projection;
}
/// <summary>
/// Draw the model using no instancing method
/// </summary>
/// <param name="view">View matrix of the active camera.</param>
/// <param name="projection">Projection matrix of the active camera.</param>
/// <param name="individualTransformations">Individual transforms of the meshes.</param>
/// <param name="customEffect">Custom effect to be applied to the model.</param>
private void DrawModelNoInstancing(Matrix view, Matrix projection,
Dictionary <string, Matrix> individualTransformations, Effect customEffect)
{
Matrix baseWorld = GetWorldMatrix();
foreach (ModelMesh mesh in _model.Model.Meshes)
{
Matrix localWorld = ModelTransforms[mesh.ParentBone.Index] * baseWorld;
foreach (ModelMeshPart meshPart in mesh.MeshParts)
{
if (!(meshPart.Effect is BasicEffect))
{
IEffectMatrices iem = meshPart.Effect as IEffectMatrices;
if (customEffect != null)
{
customEffect.Parameters["xTexture"].SetValue(_model.Texture);
if (individualTransformations.ContainsKey(mesh.Name))
{
customEffect.Parameters["xWorld"].SetValue(
individualTransformations[mesh.Name] *
localWorld);
}
else
{
customEffect.Parameters["xWorld"].SetValue(
localWorld);
}
customEffect.CurrentTechnique.Passes[0].Apply();
}
else
{
if (individualTransformations.ContainsKey(mesh.Name))
{
iem.World = individualTransformations[mesh.Name] *
GetParentTransform(_model.Model, mesh.ParentBone) *
baseWorld;
}
else
{
iem.World = GetParentTransform(_model.Model, mesh.ParentBone) *
baseWorld;
}
iem.Projection = projection;
iem.View = view;
}
}
else
{
BasicEffect effect = (BasicEffect)meshPart.Effect;
if (individualTransformations.ContainsKey(mesh.Name))
{
effect.World = individualTransformations[mesh.Name] * localWorld;
}
else
{
effect.World = localWorld;
}
effect.View = view;
effect.Projection = projection;
effect.SpecularColor = Color.CadetBlue.ToVector3();
effect.SpecularPower = 64;
effect.EnableDefaultLighting();
effect.CurrentTechnique.Passes[0].Apply();
}
}
mesh.Draw();
}
}
public void Render(GraphicsDevice device, Camera cam)
{
bool devicePrepared = false;
int id = cam.GetInstanceID();
if (!CameraCullingInfo.ContainsKey(id))
{
return;
}
PooledPriorityQueue cullingInfo = CameraCullingInfo[id];
for (int i = 0; i < cullingInfo.Count; i++)
{
Transform t = Application.Find <Transform>(cullingInfo[i]);
if (t == null)
{
continue;
}
if (!t.renderer.enabled || !t.gameObject.active)
{
continue;
}
#if DEBUG
if (Camera.logRenderCalls)
{
Debug.LogFormat("Render: {0} for {1} on {2}", this, t.gameObject, cam.gameObject);
}
#endif
Effect e = Material.shader.effect;
if (!devicePrepared)
{
devicePrepared = true;
device.SetVertexBuffer(VertexBuffer);
device.Indices = IndexBuffer;
Material.shader.ApplyPreRenderSettings(Material, UseVertexColor);
Material.SetBlendState(device);
IEffectMatrices ems = e as IEffectMatrices;
if (ems != null)
{
ems.World = t.world;
ems.View = cam.view;
ems.Projection = cam.projectionMatrix;
}
}
else
{
IEffectMatrices ems = e as IEffectMatrices;
if (ems != null)
{
ems.World = t.world;
}
}
foreach (EffectPass pass in e.CurrentTechnique.Passes)
{
pass.Apply();
device.DrawIndexedPrimitives(
PrimitiveType.TriangleList,
0,
0,
VertexBuffer.VertexCount,
0,
IndexBuffer.IndexCount / 3
);
}
RenderStats.AddDrawCall(batches, VertexBuffer.VertexCount, IndexBuffer.IndexCount / 3);
}
}
public override void Draw(IDrawer drawer)
{
RefreshBuffers();
if (_vertexArray == null)
{
return;
}
GraphicsDevice graphicsDevice = drawer.GraphicsDevice;
Quad rect = drawer.DisplayedRectangle;
// Configure default effect matrices
_defaultEffect.World = SceneNode.Matrix.ToMatrix4X4(SceneNode.Depth);
_defaultEffect.View = Matrix.CreateLookAt(Vector3.Backward, Vector3.Zero, Vector3.Up);
_defaultEffect.Projection = Matrix.CreateOrthographicOffCenter(rect.Left, rect.Right, rect.Bottom, rect.Top, float.MinValue / 2, float.MaxValue / 2);
drawer.SpriteBatchStack.Push(null);
int verticesIndex = 0;
int indicesIndex = 0;
Effect currentEffect = null;
EffectPass currentPass = null;
foreach (IVisualMesh mesh in Meshes)
{
// If mesh not visible, move indexes and go to next
if (!mesh.Visible)
{
verticesIndex += mesh.VertexCount;
indicesIndex += mesh.TriangulationIndexCount;
continue;
}
bool meshIndexed = mesh.TriangulationIndexCount > 0;
foreach (IVisualMeshPart part in mesh.Parts)
{
Effect effect = part.Effect;
if (effect == null)
{
// If no effect provided, use default effect
effect = _defaultEffect;
// Enable texture if necessary
_defaultEffect.TextureEnabled = TextureSource?.Texture != null;//material.Textures.Count > 0;
}
else if (effect != currentEffect)
{
// Configure effect matrices
IEffectMatrices effectMatrices = part.EffectMatrices;
if (effectMatrices != null)
{
effectMatrices.World = _defaultEffect.World;
effectMatrices.View = _defaultEffect.View;
effectMatrices.Projection = _defaultEffect.Projection;
}
currentEffect = effect;
}
foreach (EffectPass pass in effect.CurrentTechnique.Passes)
{
if (pass != currentPass)
{
// Apply effect pass
pass.Apply();
currentPass = pass;
}
// Interesting links:
// http://www.shawnhargreaves.com/blog/spritebatch-billboards-in-a-3d-world.html
// https://github.com/MonoGame/MonoGame/blob/3e65abb158de2e07c72d0831dd971f594ff76a18/MonoGame.Framework/Graphics/Effect/SpriteEffect.cs#L71
// https://community.monogame.net/t/solved-drawing-primitives-and-spritebatch/10015/4
graphicsDevice.Textures[0] = TextureSource?.Texture;
graphicsDevice.SamplerStates[0] = SamplerState.LinearWrap;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.AlphaBlend;
graphicsDevice.DepthStencilState = DepthStencilState.None;
// Draw primitives
if (meshIndexed)
{
int primitiveCount = GetPrimitiveCount(mesh.Type, part.TriangulationIndexCount);
graphicsDevice.DrawUserIndexedPrimitives(mesh.Type, _vertexArray, verticesIndex, mesh.VertexCount, _indexArray, indicesIndex, primitiveCount);
indicesIndex += part.TriangulationIndexCount;
}
else
{
int primitiveCount = GetPrimitiveCount(mesh.Type, part.VertexCount);
graphicsDevice.DrawUserPrimitives(mesh.Type, _vertexArray, verticesIndex, primitiveCount);
verticesIndex += part.VertexCount;
}
}
}
// If mesh indexed, move vertices index after all parts have been drawn.
if (meshIndexed)
{
verticesIndex += mesh.VertexCount;
}
}
drawer.SpriteBatchStack.Pop();
}
