submit method

void submit(RenderItem item)

Queues a draw call for item, unless it is hidden or frustum culled.

Both opaque and translucent draws are deferred; flush sorts and emits them. A translucent instanced item is queued as one draw per instance so each can be depth-sorted independently.

Implementation

void submit(RenderItem item) {
  if (!item.visible) return;
  if (item.frustumCulled) {
    final bounds = item.cullBounds;
    if (bounds != null) {
      cullScratchAabb
        ..copyFrom(bounds)
        ..transform(item.worldTransform);
      if (!frustum.intersectsWithAabb3(cullScratchAabb)) return;
    }
  }

  final pipeline = _resolvePipeline(
    item.geometry.vertexShader,
    item.material.fragmentShader,
  );

  if (item.material.isOpaque()) {
    _opaqueRecords.add(
      _OpaqueRecord(
        item,
        pipeline,
        identityHashCode(pipeline),
        _depthOf(item.worldTransform),
      ),
    );
    return;
  }

  // Translucent. Instanced items are exploded into one record per
  // instance, like any other translucent draw.
  final instances = item.instanceTransforms;
  if (instances != null) {
    for (final instanceTransform in instances) {
      final worldTransform = item.worldTransform * instanceTransform;
      _translucentRecords.add(
        _TranslucentRecord(
          worldTransform,
          item.geometry,
          item.material,
          pipeline,
          _depthOf(worldTransform),
          item.windingFlipped != (instanceTransform.determinant() < 0),
        ),
      );
    }
  } else {
    _translucentRecords.add(
      _TranslucentRecord(
        item.worldTransform,
        item.geometry,
        item.material,
        pipeline,
        _depthOf(item.worldTransform),
        item.windingFlipped,
      ),
    );
  }
}