public override void Draw(RenderDrawContext context, RenderView renderView, RenderViewStage renderViewStage, int startIndex, int endIndex)
{
base.Draw(context, renderView, renderViewStage, startIndex, endIndex);
BlendStateDescription? previousBlendState = null;
DepthStencilStateDescription?previousDepthStencilState = null;
EffectInstance previousEffect = null;
//TODO string comparison ...?
var isPicking = RenderSystem.RenderStages[renderViewStage.Index].Name == "Picking";
var hasBegin = false;
for (var index = startIndex; index < endIndex; index++)
{
var renderNodeReference = renderViewStage.SortedRenderNodes[index].RenderNode;
var renderNode = GetRenderNode(renderNodeReference);
var spriteState = (RenderSpriteStudio)renderNode.RenderObject;
var depthStencilState = DepthStencilStates.DepthRead;
foreach (var node in spriteState.SortedNodes)
{
if (node.Sprite?.Texture == null || node.Sprite.Region.Width <= 0 || node.Sprite.Region.Height <= 0f || node.Hide != 0)
{
continue;
}
// Update the sprite batch
BlendStateDescription spriteBlending;
switch (node.BaseNode.AlphaBlending)
{
case SpriteStudioBlending.Mix:
spriteBlending = BlendStates.AlphaBlend;
break;
case SpriteStudioBlending.Multiplication:
spriteBlending = MultBlendState;
break;
case SpriteStudioBlending.Addition:
spriteBlending = BlendStates.Additive;
break;
case SpriteStudioBlending.Subtraction:
spriteBlending = SubBlendState;
break;
default:
throw new ArgumentOutOfRangeException();
}
// TODO: this should probably be moved to Prepare()
// Project the position
// TODO: This could be done in a SIMD batch, but we need to figure-out how to plugin in with RenderMesh object
var worldPosition = new Vector4(spriteState.WorldMatrix.TranslationVector, 1.0f);
Vector4 projectedPosition;
Vector4.Transform(ref worldPosition, ref renderView.ViewProjection, out projectedPosition);
var projectedZ = projectedPosition.Z / projectedPosition.W;
var blendState = isPicking ? BlendStates.Default : spriteBlending;
// TODO: the current impementation to determine if the sprite is selected does not work. This should be fixed later at some point
//var currentEffect = isPicking ? GetOrCreatePickingSpriteEffect() : ShadowObject.IsObjectSelected(spriteState.SpriteStudioComponent) ? GetOrCreateSelectedSpriteEffect() : null;
var currentEffect = isPicking ? GetOrCreatePickingSpriteEffect() : null;
// TODO remove this code when material are available
if (previousEffect != currentEffect || blendState != previousBlendState || depthStencilState != previousDepthStencilState)
{
if (hasBegin)
{
sprite3DBatch.End();
}
sprite3DBatch.Begin(context.GraphicsContext, renderView.ViewProjection, SpriteSortMode.Deferred, blendState, null, depthStencilState, RasterizerStates.CullNone, currentEffect);
hasBegin = true;
}
previousEffect = currentEffect;
previousBlendState = blendState;
previousDepthStencilState = depthStencilState;
var sourceRegion = node.Sprite.Region;
var texture = node.Sprite.Texture;
// skip the sprite if no texture is set.
if (texture == null)
{
continue;
}
var color4 = Color4.White;
if (isPicking)
{
// TODO move this code corresponding to picking out of the runtime code.
color4 = new Color4(RuntimeIdHelper.ToRuntimeId(spriteState.Source));
}
else
{
if (node.BlendFactor > 0.0f)
{
switch (node.BlendType) //todo this should be done in a shader
{
case SpriteStudioBlending.Mix:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Multiplication:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Addition:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Subtraction:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
else
{
color4 *= node.FinalTransparency;
}
}
Matrix.Multiply(ref node.ModelTransform, ref spriteState.WorldMatrix, out var worldMatrix);
// calculate normalized position of the center of the sprite (takes into account the possible rotation of the image)
var normalizedCenter = new Vector2(node.Sprite.Center.X / sourceRegion.Width - 0.5f, 0.5f - node.Sprite.Center.Y / sourceRegion.Height);
if (node.Sprite.Orientation == ImageOrientation.Rotated90)
{
var oldCenterX = normalizedCenter.X;
normalizedCenter.X = -normalizedCenter.Y;
normalizedCenter.Y = oldCenterX;
}
// apply the offset due to the center of the sprite
var size = node.Sprite.Size;
var centerOffset = Vector2.Modulate(normalizedCenter, size);
worldMatrix.M41 -= centerOffset.X * worldMatrix.M11 + centerOffset.Y * worldMatrix.M21;
worldMatrix.M42 -= centerOffset.X * worldMatrix.M12 + centerOffset.Y * worldMatrix.M22;
// draw the sprite
sprite3DBatch.Draw(texture, ref worldMatrix, ref sourceRegion, ref size, ref color4, node.Sprite.Orientation, SwizzleMode.None, projectedZ);
}
}
if (hasBegin)
{
sprite3DBatch.End();
}
}
public override void Draw(RenderDrawContext context, RenderView renderView, RenderViewStage renderViewStage, int startIndex, int endIndex)
{
base.Draw(context, renderView, renderViewStage, startIndex, endIndex);
Matrix viewInverse;
Matrix.Invert(ref renderView.View, out viewInverse);
BlendStateDescription? previousBlendState = null;
DepthStencilStateDescription?previousDepthStencilState = null;
EffectInstance previousEffect = null;
//TODO string comparison ...?
var isPicking = renderViewStage.RenderStage.Name == "Picking";
bool hasBegin = false;
for (var index = startIndex; index < endIndex; index++)
{
var renderNodeReference = renderViewStage.SortedRenderNodes[index].RenderNode;
var renderNode = GetRenderNode(renderNodeReference);
var renderSprite = (RenderSprite)renderNode.RenderObject;
var spriteComp = renderSprite.SpriteComponent;
var transfoComp = renderSprite.TransformComponent;
var depthStencilState = renderSprite.SpriteComponent.IgnoreDepth ? DepthStencilStates.None : DepthStencilStates.Default;
var sprite = spriteComp.CurrentSprite;
if (sprite == null)
{
continue;
}
// TODO: this should probably be moved to Prepare()
// Project the position
// TODO: This could be done in a SIMD batch, but we need to figure-out how to plugin in with RenderMesh object
var worldPosition = new Vector4(renderSprite.TransformComponent.WorldMatrix.TranslationVector, 1.0f);
Vector4 projectedPosition;
Vector4.Transform(ref worldPosition, ref renderView.ViewProjection, out projectedPosition);
var projectedZ = projectedPosition.Z / projectedPosition.W;
// Update the sprite batch
var blendState = isPicking ? BlendStates.Default : sprite.IsTransparent ? (spriteComp.PremultipliedAlpha ? BlendStates.AlphaBlend : BlendStates.NonPremultiplied) : BlendStates.Opaque;
var currentEffect = isPicking ? GetOrCreatePickingSpriteEffect() : null; // TODO remove this code when material are available
if (previousEffect != currentEffect || blendState != previousBlendState || depthStencilState != previousDepthStencilState)
{
if (hasBegin)
{
sprite3DBatch.End();
}
sprite3DBatch.Begin(context.GraphicsContext, renderView.ViewProjection, SpriteSortMode.Deferred, blendState, null, depthStencilState, RasterizerStates.CullNone, currentEffect);
hasBegin = true;
}
previousEffect = currentEffect;
previousBlendState = blendState;
previousDepthStencilState = depthStencilState;
var sourceRegion = sprite.Region;
var texture = sprite.Texture;
var color = spriteComp.Color;
if (isPicking) // TODO move this code corresponding to picking out of the runtime code.
{
var compId = RuntimeIdHelper.ToRuntimeId(spriteComp);
color = new Color4(compId);
}
// skip the sprite if no texture is set.
if (texture == null)
{
continue;
}
// determine the element world matrix depending on the type of sprite
var worldMatrix = transfoComp.WorldMatrix;
if (spriteComp.SpriteType == SpriteType.Billboard)
{
worldMatrix = viewInverse;
// remove scale of the camera
worldMatrix.Row1 /= ((Vector3)viewInverse.Row1).Length();
worldMatrix.Row2 /= ((Vector3)viewInverse.Row2).Length();
// set the scale of the object
worldMatrix.Row1 *= ((Vector3)transfoComp.WorldMatrix.Row1).Length();
worldMatrix.Row2 *= ((Vector3)transfoComp.WorldMatrix.Row2).Length();
// set the position
worldMatrix.TranslationVector = transfoComp.WorldMatrix.TranslationVector;
}
// calculate normalized position of the center of the sprite (takes into account the possible rotation of the image)
var normalizedCenter = new Vector2(sprite.Center.X / sourceRegion.Width - 0.5f, 0.5f - sprite.Center.Y / sourceRegion.Height);
if (sprite.Orientation == ImageOrientation.Rotated90)
{
var oldCenterX = normalizedCenter.X;
normalizedCenter.X = -normalizedCenter.Y;
normalizedCenter.Y = oldCenterX;
}
// apply the offset due to the center of the sprite
var centerOffset = Vector2.Modulate(normalizedCenter, sprite.SizeInternal);
worldMatrix.M41 -= centerOffset.X * worldMatrix.M11 + centerOffset.Y * worldMatrix.M21;
worldMatrix.M42 -= centerOffset.X * worldMatrix.M12 + centerOffset.Y * worldMatrix.M22;
worldMatrix.M43 -= centerOffset.X * worldMatrix.M13 + centerOffset.Y * worldMatrix.M23;
// draw the sprite
sprite3DBatch.Draw(texture, ref worldMatrix, ref sourceRegion, ref sprite.SizeInternal, ref color, sprite.Orientation, SwizzleMode.None, projectedZ);
}
if (hasBegin)
{
sprite3DBatch.End();
}
}
protected override void DrawCore(RenderContext context, RenderItemCollection renderItems, int fromIndex, int toIndex)
{
var viewParameters = context.Parameters;
var device = context.GraphicsDevice;
var viewProjection = viewParameters.Get(TransformationKeys.ViewProjection);
BlendState previousBlendState = null;
DepthStencilState previousDepthStencilState = null;
Effect previousEffect = null;
var isPicking = context.IsPicking();
bool hasBegin = false;
for (var i = fromIndex; i <= toIndex; i++)
{
var renderItem = renderItems[i];
var spriteState = (SpriteStudioProcessor.Data)renderItem.DrawContext;
var transfoComp = spriteState.TransformComponent;
var depthStencilState = device.DepthStencilStates.None;
foreach (var node in spriteState.SpriteStudioComponent.SortedNodes)
{
if (node.Sprite?.Texture == null || node.Sprite.Region.Width <= 0 || node.Sprite.Region.Height <= 0f || node.Hide)
{
continue;
}
// Update the sprite batch
BlendState spriteBlending;
switch (node.BaseNode.AlphaBlending)
{
case SpriteStudioBlending.Mix:
spriteBlending = device.BlendStates.AlphaBlend;
break;
case SpriteStudioBlending.Multiplication:
spriteBlending = MultBlendState;
break;
case SpriteStudioBlending.Addition:
spriteBlending = device.BlendStates.Additive;
break;
case SpriteStudioBlending.Subtraction:
spriteBlending = SubBlendState;
break;
default:
throw new ArgumentOutOfRangeException();
}
var blendState = isPicking ? device.BlendStates.Opaque : renderItems.HasTransparency ? spriteBlending : device.BlendStates.Opaque;
var currentEffect = isPicking ? GetOrCreatePickingSpriteEffect() : spriteState.SpriteStudioComponent.Tags.Get(IsEntitySelected) ? GetOrCreateSelectedSpriteEffect() : null;
// TODO remove this code when material are available
if (previousEffect != currentEffect || blendState != previousBlendState || depthStencilState != previousDepthStencilState)
{
if (hasBegin)
{
sprite3DBatch.End();
}
sprite3DBatch.Begin(viewProjection, SpriteSortMode.Deferred, blendState, null, depthStencilState, device.RasterizerStates.CullNone, currentEffect);
hasBegin = true;
}
previousEffect = currentEffect;
previousBlendState = blendState;
previousDepthStencilState = depthStencilState;
var sourceRegion = node.Sprite.Region;
var texture = node.Sprite.Texture;
// skip the sprite if no texture is set.
if (texture == null)
{
continue;
}
var color4 = Color4.White;
if (isPicking)
{
// TODO move this code corresponding to picking out of the runtime code.
color4 = new Color4(spriteState.SpriteStudioComponent.Id);
}
else
{
if (node.BlendFactor > 0.0f)
{
switch (node.BlendType) //todo this should be done in a shader
{
case SpriteStudioBlending.Mix:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Multiplication:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Addition:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
case SpriteStudioBlending.Subtraction:
color4 = Color4.Lerp(color4, node.BlendColor, node.BlendFactor) * node.FinalTransparency;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
else
{
color4 *= node.FinalTransparency;
}
}
var worldMatrix = node.ModelTransform * transfoComp.WorldMatrix;
// calculate normalized position of the center of the sprite (takes into account the possible rotation of the image)
var normalizedCenter = new Vector2(node.Sprite.Center.X / sourceRegion.Width - 0.5f, 0.5f - node.Sprite.Center.Y / sourceRegion.Height);
if (node.Sprite.Orientation == ImageOrientation.Rotated90)
{
var oldCenterX = normalizedCenter.X;
normalizedCenter.X = -normalizedCenter.Y;
normalizedCenter.Y = oldCenterX;
}
// apply the offset due to the center of the sprite
var size = node.Sprite.Size;
var centerOffset = Vector2.Modulate(normalizedCenter, size);
worldMatrix.M41 -= centerOffset.X * worldMatrix.M11 + centerOffset.Y * worldMatrix.M21;
worldMatrix.M42 -= centerOffset.X * worldMatrix.M12 + centerOffset.Y * worldMatrix.M22;
// draw the sprite
sprite3DBatch.Draw(texture, ref worldMatrix, ref sourceRegion, ref size, ref color4, node.Sprite.Orientation, SwizzleMode.None, renderItem.Depth);
}
}
sprite3DBatch.End();
}
protected override void DrawCore(RenderContext context, RenderItemCollection renderItems, int fromIndex, int toIndex)
{
var viewParameters = context.Parameters;
var device = context.GraphicsDevice;
var viewInverse = Matrix.Invert(viewParameters.Get(TransformationKeys.View));
var viewProjection = viewParameters.Get(TransformationKeys.ViewProjection);
BlendState previousBlendState = null;
DepthStencilState previousDepthStencilState = null;
Effect previousEffect = null;
var isPicking = context.IsPicking();
bool hasBegin = false;
for (var i = fromIndex; i <= toIndex; i++)
{
var renderItem = renderItems[i];
var spriteState = (SpriteProcessor.SpriteComponentState)renderItem.DrawContext;
var spriteComp = spriteState.SpriteComponent;
var transfoComp = spriteState.TransformComponent;
var depthStencilState = spriteState.SpriteComponent.IgnoreDepth ? device.DepthStencilStates.None : device.DepthStencilStates.Default;
var sprite = spriteComp.CurrentSprite;
if (sprite == null)
{
continue;
}
// Update the sprite batch
var blendState = isPicking ? device.BlendStates.Opaque : renderItems.HasTransparency ? (spriteComp.PremultipliedAlpha ? device.BlendStates.AlphaBlend : device.BlendStates.NonPremultiplied) : device.BlendStates.Opaque;
var currentEffect = isPicking? GetOrCreatePickingSpriteEffect(): spriteComp.Tags.Get(IsEntitySelected)? GetOrCreateSelectedSpriteEffect(): null; // TODO remove this code when material are available
if (previousEffect != currentEffect || blendState != previousBlendState || depthStencilState != previousDepthStencilState)
{
if (hasBegin)
{
sprite3DBatch.End();
}
sprite3DBatch.Begin(viewProjection, SpriteSortMode.Deferred, blendState, null, depthStencilState, device.RasterizerStates.CullNone, currentEffect);
hasBegin = true;
}
previousEffect = currentEffect;
previousBlendState = blendState;
previousDepthStencilState = depthStencilState;
var sourceRegion = sprite.Region;
var texture = sprite.Texture;
var color = spriteComp.Color;
if (isPicking) // TODO move this code corresponding to picking out of the runtime code.
{
color = (Color) new Color4(spriteComp.Id);
}
// skip the sprite if no texture is set.
if (texture == null)
{
continue;
}
// determine the element world matrix depending on the type of sprite
var worldMatrix = transfoComp.WorldMatrix;
if (spriteComp.SpriteType == SpriteType.Billboard)
{
worldMatrix = viewInverse;
// remove scale of the camera
worldMatrix.Row1 /= ((Vector3)viewInverse.Row1).Length();
worldMatrix.Row2 /= ((Vector3)viewInverse.Row2).Length();
// set the scale of the object
worldMatrix.Row1 *= ((Vector3)transfoComp.WorldMatrix.Row1).Length();
worldMatrix.Row2 *= ((Vector3)transfoComp.WorldMatrix.Row2).Length();
// set the position
worldMatrix.TranslationVector = transfoComp.WorldMatrix.TranslationVector;
}
// apply the offset due to the center of the sprite
var normalizedCenter = new Vector2(sprite.SizeInternal.X * (sprite.Center.X / sourceRegion.Width - 0.5f), sprite.SizeInternal.Y * (0.5f - sprite.Center.Y / sourceRegion.Height));
worldMatrix.M41 -= normalizedCenter.X * worldMatrix.M11 + normalizedCenter.Y * worldMatrix.M21;
worldMatrix.M42 -= normalizedCenter.X * worldMatrix.M12 + normalizedCenter.Y * worldMatrix.M22;
worldMatrix.M43 -= normalizedCenter.X * worldMatrix.M13 + normalizedCenter.Y * worldMatrix.M23;
// draw the sprite
sprite3DBatch.Draw(texture, ref worldMatrix, ref sourceRegion, ref sprite.SizeInternal, ref color, sprite.Orientation, SwizzleMode.None, renderItem.Depth);
}
sprite3DBatch.End();
}
private void DrawScene()
{
var cameraSize = 640f;
var cameraNear = 100;
var projectionMatrix = Matrix.PerspectiveRH(cameraSize, cameraSize, cameraNear, 10000);
var viewMatrix = Matrix.LookAtRH(cameraNear * Vector3.UnitZ, Vector3.Zero, Vector3.UnitY);
GraphicsContext.CommandList.Clear(GraphicsDevice.Presenter.BackBuffer, Color.Black);
GraphicsContext.CommandList.Clear(GraphicsDevice.Presenter.DepthStencilBuffer, DepthStencilClearOptions.DepthBuffer);
GraphicsContext.CommandList.SetRenderTargetAndViewport(GraphicsDevice.Presenter.DepthStencilBuffer, GraphicsDevice.Presenter.BackBuffer);
batch.Begin(GraphicsContext, viewMatrix * projectionMatrix, rasterizerState: rasterizerState);
var leftTopCorner = new Vector3(-320, -320, 0);
var pos = leftTopCorner;
var noRotation = rotatedImages["NoRotation"];
var rotation90 = rotatedImages["Rotation90"];
var width = noRotation.Region.Width;
var height = noRotation.Region.Height;
// not rotated image
pos.X = leftTopCorner.X + width / 2;
pos.Y = leftTopCorner.Y + height / 2;
Draw(noRotation, pos);
// rotated image
pos.X = leftTopCorner.X + width / 2;
pos.Y = leftTopCorner.Y + height + height / 2;
Draw(rotation90, pos);
// colored image
pos.X = leftTopCorner.X + 3 * width / 2;
pos.Y = leftTopCorner.Y + height / 2;
Draw(noRotation, pos, null, colorParam: Color.Gray);
// deformed image
pos.X = leftTopCorner.X + width + height / 2;
pos.Y = leftTopCorner.Y + 3 * height / 2;
Draw(noRotation, pos, sizeParam: new Vector2(height, height));
// image on background
pos.X = leftTopCorner.X + width;
pos.Y = leftTopCorner.Y + 3 / 2f * height;
pos.Z = -20;
Draw(noRotation, pos);
pos.Z = 0;
// rotating image (around Z)
pos.X = leftTopCorner.X + 3 * width;
pos.Y = leftTopCorner.Y + width;
Draw(noRotation, pos, new Vector3(0, 0, timeInSeconds));
// rotating image (around Y)
pos.X = leftTopCorner.X + 3 * width;
pos.Y = leftTopCorner.Y + 3 * width;
pos.Z = -width / 2;
Draw(noRotation, pos, new Vector3(timeInSeconds, 0, 0));
pos.Z = 0;
// ball
pos.Y = leftTopCorner.X + 4 * width;
pos.X = leftTopCorner.Y + 1 * width;
var time = timeInSeconds;
var rotation = (float)(time * Math.PI * 2.0);
var sourceRectangle = GetSphereAnimation(time);
var world = Matrix.RotationYawPitchRoll(0, 0, rotation) * Matrix.Translation(pos);
var size = new Vector2(SphereWidth, SphereHeight);
var color = Color4.White;
batch.Draw(sphere, ref world, ref sourceRectangle, ref size, ref color);
batch.End();
}
protected override void DrawCore(RenderContext context, RenderItemCollection renderItems, int fromIndex, int toIndex)
{
// TODO: Check how to integrate sprites in a Camera renderer instead of this
var viewParameters = context.Parameters;
var device = context.GraphicsDevice;
var cullMode = device.RasterizerStates.CullNone;
var viewInverse = Matrix.Invert(viewParameters.Get(TransformationKeys.View));
var viewProjection = viewParameters.Get(TransformationKeys.ViewProjection);
BlendState previousBlendState = null;
Effect previousEffect = null;
var isPicking = context.IsPicking();
bool hasBegin = false;
for (var i = fromIndex; i <= toIndex; i++)
{
var renderItem = renderItems[i];
var spriteState = (SpriteProcessor.SpriteComponentState)renderItem.DrawContext;
var spriteComp = spriteState.SpriteComponent;
var transfoComp = spriteState.TransformComponent;
var sprite = spriteComp.CurrentSprite;
if (sprite == null)
{
continue;
}
// Update the sprite batch
var blendState = isPicking ? device.BlendStates.Opaque : renderItems.HasTransparency ? (spriteComp.PremultipliedAlpha ? device.BlendStates.AlphaBlend : device.BlendStates.NonPremultiplied) : device.BlendStates.Opaque;
var currentEffect = (!isPicking && spriteComp.Tags.Get(IsEntitySelected)) ? GetOrCreateSelectedSpriteEffect(): null; // TODO remove this code when material are available
if (previousEffect != currentEffect || blendState != previousBlendState)
{
if (hasBegin)
{
sprite3DBatch.End();
}
sprite3DBatch.Begin(viewProjection, SpriteSortMode.Deferred, blendState, null, context.GraphicsDevice.DepthStencilStates.None, cullMode, currentEffect);
hasBegin = true;
}
previousEffect = currentEffect;
previousBlendState = blendState;
var sourceRegion = sprite.Region;
var texture = sprite.Texture;
var color = spriteComp.Color;
if (isPicking) // TODO move this code corresponding to picking out of the runtime code.
{
texture = device.GetSharedWhiteTexture();
color = (Color) new Color4(spriteComp.Id);
}
// skip the sprite if no texture is set.
if (texture == null)
{
continue;
}
// determine the size of the element depending on the extrusion method.
var elementSize = Vector2.One;
if (spriteComp.ExtrusionMethod == SpriteExtrusionMethod.UnitHeightSpriteRatio)
{
elementSize.X = sourceRegion.Width / sourceRegion.Height;
}
else if (spriteComp.ExtrusionMethod == SpriteExtrusionMethod.UnitWidthSpriteRatio)
{
elementSize.Y = sourceRegion.Height / sourceRegion.Width;
}
// determine the element world matrix depending on the type of sprite
var worldMatrix = transfoComp.WorldMatrix;
if (spriteComp.SpriteType == SpriteType.Billboard)
{
worldMatrix = viewInverse;
// remove scale of the camera
worldMatrix.Row1 /= ((Vector3)viewInverse.Row1).Length();
worldMatrix.Row2 /= ((Vector3)viewInverse.Row2).Length();
// set the scale of the object
worldMatrix.Row1 *= ((Vector3)transfoComp.WorldMatrix.Row1).Length();
worldMatrix.Row2 *= ((Vector3)transfoComp.WorldMatrix.Row2).Length();
// set the position
worldMatrix.TranslationVector = transfoComp.WorldMatrix.TranslationVector;
}
// draw the sprite
sprite3DBatch.Draw(texture, ref worldMatrix, ref sourceRegion, ref elementSize, ref color, sprite.Orientation, SwizzleMode.None, renderItem.Depth);
}
sprite3DBatch.End();
}