/// <inheritdoc />
public override unsafe void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
var colorField = sorter.GetField(ParticleFields.Color);
if (!colorField.IsValid())
{
return;
}
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
{
return;
}
foreach (var particle in sorter)
{
// Set the vertex color attribute to the particle's color field
var color = (uint)(*(Color4 *)particle[colorField]).ToRgba();
bufferState.SetAttributePerSegment(colAttribute, (IntPtr)(&color));
bufferState.NextSegment();
}
bufferState.StartOver();
}
public override unsafe void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
// Update the non-default coordinates first, because they update off the default ones
if (UVBuilder1 != null)
{
UVBuilder1.BuildUVCoordinates(ref bufferState, ref sorter, texCoord1);
}
// Update the default coordinates last
if (UVBuilder0 != null)
{
UVBuilder0.BuildUVCoordinates(ref bufferState, ref sorter, texCoord0);
}
// If the particles have color field, the base class should have already passed the information
if (HasColorField)
{
return;
}
// If there is no color stream we don't need to fill anything
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
{
return;
}
// Since the particles don't have their own color field, set the default color to white
var color = 0xFFFFFFFF;
bufferState.StartOver();
foreach (var particle in sorter)
{
bufferState.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
bufferState.NextParticle();
}
bufferState.StartOver();
}
/// <inheritdoc />
public unsafe override void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can implement the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
// The UV Builder, if present, animates the basic (0, 0, 1, 1) uv coordinates of each billboard
UVBuilder?.BuildUVCoordinates(ref bufferState, ref sorter, bufferState.DefaultTexCoords);
bufferState.StartOver();
// If the particles have color field, the base class should have already passed the information
if (HasColorField)
{
return;
}
// If the particles don't have color field but there is no color stream either we don't need to fill anything
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
{
return;
}
// Since the particles don't have their own color field, set the default color to white
var color = 0xFFFFFFFF;
// TODO: for loop. Remove IEnumerable from sorter
foreach (var particle in sorter)
{
bufferState.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
bufferState.NextParticle();
}
bufferState.StartOver();
}
/// <summary>
/// Build the vertex buffer from particle data
/// </summary>
/// <param name="sharedBufferPtr">The shared vertex buffer position where the particle data should be output</param>
/// <param name="invViewMatrix">The current camera's inverse view matrix</param>
public void BuildVertexBuffer(IntPtr sharedBufferPtr, ref Matrix invViewMatrix, ref Matrix viewProj)
{
// Get camera-space X and Y axes for billboard expansion and sort the particles if needed
var unitX = new Vector3(invViewMatrix.M11, invViewMatrix.M12, invViewMatrix.M13);
var unitY = new Vector3(invViewMatrix.M21, invViewMatrix.M22, invViewMatrix.M23);
// Not the best solution, might want to improve
var depthVector = Vector3.Cross(unitX, unitY);
if (simulationSpace == EmitterSimulationSpace.Local)
{
var inverseRotation = drawTransform.WorldRotation;
inverseRotation.W *= -1;
inverseRotation.Rotate(ref depthVector);
}
var sortedList = ParticleSorter.GetSortedList(depthVector);
// If the particles are in world space they don't need to be fixed as their coordinates are already in world space
// If the particles are in local space they need to be drawn in world space using the emitter's current location matrix
var posIdentity = new Vector3(0, 0, 0);
var rotIdentity = Quaternion.Identity;
var scaleIdentity = 1f;
if (simulationSpace == EmitterSimulationSpace.Local)
{
posIdentity = drawTransform.WorldPosition;
rotIdentity = drawTransform.WorldRotation;
scaleIdentity = drawTransform.WorldScale.X;
}
ParticleBufferState bufferState = new ParticleBufferState(sharedBufferPtr, VertexBuilder);
ShapeBuilder.SetRequiredQuads(ShapeBuilder.QuadsPerParticle, pool.LivingParticles, pool.ParticleCapacity);
ShapeBuilder.BuildVertexBuffer(ref bufferState, unitX, unitY, ref posIdentity, ref rotIdentity, scaleIdentity, ref sortedList, ref viewProj);
bufferState.StartOver();
Material.PatchVertexBuffer(ref bufferState, unitX, unitY, ref sortedList);
ParticleSorter.FreeSortedList(ref sortedList);
}
/// <inheritdoc />
public override unsafe void BuildUVCoordinates(ref ParticleBufferState bufferState, ref ParticleList sorter, AttributeDescription texCoordsDescription)
{
var lifeField = sorter.GetField(ParticleFields.RemainingLife);
if (!lifeField.IsValid())
{
return;
}
var texAttribute = bufferState.GetAccessor(texCoordsDescription);
if (texAttribute.Size == 0 && texAttribute.Offset == 0)
{
return;
}
var texDefault = bufferState.GetAccessor(bufferState.DefaultTexCoords);
if (texDefault.Size == 0 && texDefault.Offset == 0)
{
return;
}
foreach (var particle in sorter)
{
var normalizedTimeline = 1f - *(float *)(particle[lifeField]);
var spriteId = startingFrame + (int)(normalizedTimeline * animationSpeedOverLife);
Vector4 uvTransform = new Vector4((spriteId % xDivisions) * xStep, (spriteId / xDivisions) * yStep, xStep, yStep);
bufferState.TransformAttributePerParticle(texDefault, texAttribute, this, ref uvTransform);
bufferState.NextParticle();
}
bufferState.StartOver();
}
/// <inheritdoc />
public unsafe override void BuildUVCoordinates(ref ParticleBufferState bufferState, ref ParticleList sorter, AttributeDescription texCoordsDescription)
{
var lifeField = sorter.GetField(ParticleFields.RemainingLife);
if (!lifeField.IsValid())
{
return;
}
var texAttribute = bufferState.GetAccessor(texCoordsDescription);
if (texAttribute.Size == 0 && texAttribute.Offset == 0)
{
return;
}
var texDefault = bufferState.GetAccessor(bufferState.DefaultTexCoords);
if (texDefault.Size == 0 && texDefault.Offset == 0)
{
return;
}
foreach (var particle in sorter)
{
var normalizedTimeline = 1f - *(float *)(particle[lifeField]);
Vector4 uvTransform = Vector4.Lerp(StartFrame, EndFrame, normalizedTimeline);
uvTransform.Z -= uvTransform.X;
uvTransform.W -= uvTransform.Y;
bufferState.TransformAttributePerSegment(texDefault, texAttribute, this, ref uvTransform);
bufferState.NextSegment();
}
bufferState.StartOver();
}
/// <inheritdoc />
public override unsafe int BuildVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY,
ref Vector3 spaceTranslation, ref Quaternion spaceRotation, float spaceScale, ref ParticleList sorter)
{
// Get all the required particle fields
var positionField = sorter.GetField(ParticleFields.Position);
if (!positionField.IsValid())
{
return(0);
}
var sizeField = sorter.GetField(ParticleFields.Size);
var orderField = sorter.GetField(ParticleFields.Order);
// Check if the draw space is identity - in this case we don't need to transform the position, scale and rotation vectors
// ReSharper disable once CompareOfFloatsByEqualityOperator
var trsIdentity = (spaceScale == 1f);
trsIdentity = trsIdentity && (spaceTranslation.Equals(new Vector3(0, 0, 0)));
trsIdentity = trsIdentity && (spaceRotation.Equals(Quaternion.Identity));
var ribbonizer = new Ribbonizer(this, currentTotalParticles, currentQuadsPerParticle);
var renderedParticles = 0;
bufferState.StartOver();
uint oldOrderValue = 0;
foreach (var particle in sorter)
{
if (orderField.IsValid())
{
var orderValue = (*((uint *)particle[orderField]));
if ((orderValue >> SpawnOrderConst.GroupBitOffset) != (oldOrderValue >> SpawnOrderConst.GroupBitOffset))
{
ribbonizer.Ribbonize(ref bufferState, invViewX, invViewY, QuadsPerParticle);
ribbonizer.RibbonSplit();
}
oldOrderValue = orderValue;
}
var centralPos = particle.Get(positionField);
var particleSize = sizeField.IsValid() ? particle.Get(sizeField) : 1f;
if (!trsIdentity)
{
spaceRotation.Rotate(ref centralPos);
centralPos = centralPos * spaceScale + spaceTranslation;
particleSize *= spaceScale;
}
ribbonizer.AddParticle(ref centralPos, particleSize);
renderedParticles++;
}
ribbonizer.Ribbonize(ref bufferState, invViewX, invViewY, QuadsPerParticle);
ribbonizer.Free();
var vtxPerShape = 4 * QuadsPerParticle;
return(renderedParticles * vtxPerShape);
}
/// <summary>
/// Build the vertex buffer from particle data
/// </summary>
/// <param name="sharedBufferPtr">The shared vertex buffer position where the particle data should be output</param>
/// <param name="invViewMatrix">The current camera's inverse view matrix</param>
public void BuildVertexBuffer(IntPtr sharedBufferPtr, ref Matrix invViewMatrix)
{
// Get camera-space X and Y axes for billboard expansion and sort the particles if needed
var unitX = new Vector3(invViewMatrix.M11, invViewMatrix.M12, invViewMatrix.M13);
var unitY = new Vector3(invViewMatrix.M21, invViewMatrix.M22, invViewMatrix.M23);
// Not the best solution, might want to improve
var depthVector = Vector3.Cross(unitX, unitY);
if (simulationSpace == EmitterSimulationSpace.Local)
{
var inverseRotation = drawTransform.WorldRotation;
inverseRotation.W *= -1;
inverseRotation.Rotate(ref depthVector);
}
var sortedList = ParticleSorter.GetSortedList(depthVector);
// If the particles are in world space they don't need to be fixed as their coordinates are already in world space
// If the particles are in local space they need to be drawn in world space using the emitter's current location matrix
var posIdentity = new Vector3(0, 0, 0);
var rotIdentity = Quaternion.Identity;
var scaleIdentity = 1f;
if (simulationSpace == EmitterSimulationSpace.Local)
{
posIdentity = drawTransform.WorldPosition;
rotIdentity = drawTransform.WorldRotation;
scaleIdentity = drawTransform.WorldScale.X;
}
ParticleBufferState bufferState = new ParticleBufferState(sharedBufferPtr, VertexBuilder);
ShapeBuilder.SetRequiredQuads(ShapeBuilder.QuadsPerParticle, pool.LivingParticles, pool.ParticleCapacity);
ShapeBuilder.BuildVertexBuffer(ref bufferState, unitX, unitY, ref posIdentity, ref rotIdentity, scaleIdentity, ref sortedList);
bufferState.StartOver();
Material.PatchVertexBuffer(ref bufferState, unitX, unitY, ref sortedList);
ParticleSorter.FreeSortedList(ref sortedList);
}
/// <inheritdoc />
public override unsafe int BuildVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY,
ref Vector3 spaceTranslation, ref Quaternion spaceRotation, float spaceScale, ref ParticleList sorter)
{
// Get all the required particle fields
var positionField = sorter.GetField(ParticleFields.Position);
if (!positionField.IsValid())
return 0;
var sizeField = sorter.GetField(ParticleFields.Size);
var orderField = sorter.GetField(ParticleFields.Order);
// Check if the draw space is identity - in this case we don't need to transform the position, scale and rotation vectors
// ReSharper disable once CompareOfFloatsByEqualityOperator
var trsIdentity = (spaceScale == 1f);
trsIdentity = trsIdentity && (spaceTranslation.Equals(new Vector3(0, 0, 0)));
trsIdentity = trsIdentity && (spaceRotation.Equals(Quaternion.Identity));
var ribbonizer = new Ribbonizer(this, currentTotalParticles, currentQuadsPerParticle);
var renderedParticles = 0;
bufferState.StartOver();
uint oldOrderValue = 0;
foreach (var particle in sorter)
{
if (orderField.IsValid())
{
var orderValue = (*((uint*)particle[orderField]));
if ((orderValue >> SpawnOrderConst.GroupBitOffset) != (oldOrderValue >> SpawnOrderConst.GroupBitOffset))
{
ribbonizer.Ribbonize(ref bufferState, invViewX, invViewY, QuadsPerParticle);
ribbonizer.RibbonSplit();
}
oldOrderValue = orderValue;
}
var centralPos = particle.Get(positionField);
var particleSize = sizeField.IsValid() ? particle.Get(sizeField) : 1f;
if (!trsIdentity)
{
spaceRotation.Rotate(ref centralPos);
centralPos = centralPos * spaceScale + spaceTranslation;
particleSize *= spaceScale;
}
ribbonizer.AddParticle(ref centralPos, particleSize);
renderedParticles++;
}
ribbonizer.Ribbonize(ref bufferState, invViewX, invViewY, QuadsPerParticle);
ribbonizer.Free();
var vtxPerShape = 4 * QuadsPerParticle;
return renderedParticles * vtxPerShape;
}
public override unsafe void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
// Update the non-default coordinates first, because they update off the default ones
if (UVBuilder1 != null) UVBuilder1.BuildUVCoordinates(ref bufferState, ref sorter, texCoord1);
// Update the default coordinates last
if (UVBuilder0 != null) UVBuilder0.BuildUVCoordinates(ref bufferState, ref sorter, texCoord0);
// If the particles have color field, the base class should have already passed the information
if (HasColorField)
return;
// If there is no color stream we don't need to fill anything
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
return;
// Since the particles don't have their own color field, set the default color to white
var color = 0xFFFFFFFF;
bufferState.StartOver();
foreach (var particle in sorter)
{
bufferState.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
bufferState.NextParticle();
}
bufferState.StartOver();
}
/// <inheritdoc />
public unsafe override void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can implement the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
// The UV Builder, if present, animates the basic (0, 0, 1, 1) uv coordinates of each billboard
UVBuilder?.BuildUVCoordinates(ref bufferState, ref sorter, bufferState.DefaultTexCoords);
bufferState.StartOver();
// If the particles have color field, the base class should have already passed the information
if (HasColorField)
return;
// If the particles don't have color field but there is no color stream either we don't need to fill anything
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
return;
// Since the particles don't have their own color field, set the default color to white
var color = 0xFFFFFFFF;
// TODO: for loop. Remove IEnumerable from sorter
foreach (var particle in sorter)
{
bufferState.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
bufferState.NextParticle();
}
bufferState.StartOver();
}
/// <inheritdoc />
public override unsafe void PatchVertexBuffer(ref ParticleBufferState bufferState, Vector3 invViewX, Vector3 invViewY, ref ParticleList sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(ref bufferState, invViewX, invViewY, ref sorter);
var colorField = sorter.GetField(ParticleFields.Color);
if (!colorField.IsValid())
return;
var colAttribute = bufferState.GetAccessor(VertexAttributes.Color);
if (colAttribute.Size <= 0)
return;
foreach (var particle in sorter)
{
// Set the vertex color attribute to the particle's color field
var color = (uint)(*(Color4*)particle[colorField]).ToRgba();
bufferState.SetAttributePerSegment(colAttribute, (IntPtr)(&color));
bufferState.NextSegment();
}
bufferState.StartOver();
}