/// <inheritdoc />
public override unsafe void PatchVertexBuffer(ParticleVertexBuilder vertexBuilder, Vector3 invViewX, Vector3 invViewY, ParticleSorter sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(vertexBuilder, invViewX, invViewY, sorter);
var colorField = sorter.GetField(ParticleFields.Color);
if (!colorField.IsValid())
{
return;
}
var colAttribute = vertexBuilder.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();
vertexBuilder.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
vertexBuilder.NextParticle();
}
vertexBuilder.RestartBuffer();
}
/// <inheritdoc />
public unsafe override void PatchVertexBuffer(ParticleVertexBuilder vertexBuilder, Vector3 invViewX, Vector3 invViewY, ParticleSorter sorter)
{
// If you want, you can implement the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(vertexBuilder, invViewX, invViewY, sorter);
// The UV Builder, if present, animates the basic (0, 0, 1, 1) uv coordinates of each billboard
UVBuilder?.BuildUVCoordinates(vertexBuilder, sorter, vertexBuilder.DefaultTexCoords);
vertexBuilder.RestartBuffer();
// 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 = vertexBuilder.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;
foreach (var particle in sorter)
{
vertexBuilder.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
vertexBuilder.NextParticle();
}
vertexBuilder.RestartBuffer();
}
public unsafe override void PatchVertexBuffer(ParticleVertexBuilder vertexBuilder, Vector3 invViewX, Vector3 invViewY, ParticleSorter sorter)
{
// If you want, you can integrate the base builder here and not call it. It should result in slight speed up
base.PatchVertexBuffer(vertexBuilder, invViewX, invViewY, sorter);
// Update the non-default coordinates first, because they update off the default ones
UVBuilder1?.BuildUVCoordinates(vertexBuilder, sorter, texCoord1);
// Update the default coordinates last
UVBuilder0?.BuildUVCoordinates(vertexBuilder, 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 = vertexBuilder.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;
vertexBuilder.RestartBuffer();
foreach (var particle in sorter)
{
vertexBuilder.SetAttributePerParticle(colAttribute, (IntPtr)(&color));
vertexBuilder.NextParticle();
}
vertexBuilder.RestartBuffer();
}