prepare_geometry()

void MayaFlux::Buffers::RenderProcessor::prepare_geometry ( const std::shared_ptr< VKBuffer > &  buffer, BufferState &  state  )

private

Prepare and retain the source and draw range for one attached buffer.

Definition at line 703 of file RenderProcessor.cpp.

{
    state.geometry_prepared = false;
    state.first_vertex = m_first_vertex;
    state.vertex_count = 0;
    state.index_count = 0;
 
    if (m_triangulate) {
        if (!state.mill)
            state.mill = std::make_unique<Portal::Graphics::PrimitiveMill>(m_mill_spec);
        state.vertex_count = mill_runs(buffer, *state.mill);
        m_last_milled_vertex_count = state.vertex_count;
        state.first_vertex = 0;
        if (state.vertex_count > 0) {
            state.draw_source = state.mill->output();
        } else if (state.draw_source != buffer) {
            state.draw_source = buffer;
        }
    } else {
        if (state.draw_source != buffer)
            state.draw_source = buffer;
        if (m_vertex_count > 0) {
            state.vertex_count = m_vertex_count;
        } else {
            const auto layout = buffer->get_vertex_layout();
            state.vertex_count = layout ? layout->vertex_count : 0U;
        }
    }
 
    if (state.vertex_count > 0 && state.draw_source->has_index_buffer())
        state.index_count = static_cast<uint32_t>(state.draw_source->get_index_buffer_size() / sizeof(uint32_t));
    state.geometry_prepared = true;
}

References buffer, MayaFlux::Buffers::RenderProcessor::BufferState::draw_source, MayaFlux::Buffers::RenderProcessor::BufferState::first_vertex, MayaFlux::Buffers::RenderProcessor::BufferState::geometry_prepared, MayaFlux::Buffers::RenderProcessor::BufferState::index_count, MayaFlux::Buffers::RenderProcessor::BufferState::mill, and MayaFlux::Buffers::RenderProcessor::BufferState::vertex_count.