Function main_build_indirect_parameters 

pub fn main_build_indirect_parameters(
    current_view: ViewQuery<'_, '_, &ExtractedView, Without<ShadowView>>,
    preprocess_pipelines: Res<'_, PreprocessPipelines>,
    build_indirect_params_bind_groups: Option<Res<'_, BuildIndirectParametersBindGroups>>,
    pipeline_cache: Res<'_, PipelineCache>,
    indirect_parameters_buffers: Option<Res<'_, IndirectParametersBuffers>>,
    build_indirect_parameters_uniform_indices: Res<'_, BuildIndirectParametersMetadata>,
    ctx: RenderContext<'_, '_>,
)

A render graph system, run for each view, that builds the indirect parameters for multi-draw indirect calls for the main opaque and transparent passes.