Cleanup and optimize particles

Minor improvements while going through the particles sources:
- Reduce getShadowDatum() calls
- Remove unused m_lastLevel, reloadColor(), m_available
  m_velocityFromMovement, maximumAlive, m_pending, m_lastT,
  m_last_last_last_emitter, modelIndex
- Color4ub structs can be assigned directly
- Fix pri for shaders_ng files
- Other minor refactoring

Task-number: QTBUG-88124
Change-Id: I5768fed9f4b6379a698849c23436fa38169833a4
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/particles/qquickturbulence_p.h b/src/particles/qquickturbulence_p.h
index e6204f4f0b..a4aef063de 100644
--- a/src/particles/qquickturbulence_p.h
+++ b/src/particles/qquickturbulence_p.h
@@ -112,7 +112,6 @@ private:
     void initializeGrid();
     qreal boundsRespectingField(int x, int y);
     qreal m_strength;
-    qreal m_lastT;
     int m_gridSize;
     qreal** m_field;
     QPointF** m_vectorField;