on_iteration_barrier()

void MayaFlux::Buffers::DiffuseProcessor::on_iteration_barrier ( Portal::Graphics::CommandBufferID  cmd_id, const std::shared_ptr< VKBuffer > &  buffer, uint32_t  index  )

overrideprotectedvirtual

Barrier both target slots and the scratch between passes.

Parameters

cmd_id	Command buffer being recorded into.
buffer	Buffer under processing.
index	Zero-based index of the pass just recorded.

Reimplemented from MayaFlux::Buffers::ComputeProcessor.

Definition at line 82 of file DiffuseProcessor.cpp.

{
    const auto& volume = get_volume();
    if (!volume) {
        return;
    }
 
    auto& foundry = Portal::Graphics::get_shader_foundry();
 
    const auto src = vk::AccessFlagBits::eShaderWrite;
    const auto dst = vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eShaderWrite;
    const auto stage = vk::PipelineStageFlagBits::eComputeShader;
 
    foundry.buffer_barrier(cmd_id, volume->read_handle(m_target_field), src, dst, stage, stage);
    foundry.buffer_barrier(cmd_id, volume->write_handle(m_target_field), src, dst, stage, stage);
    foundry.buffer_barrier(cmd_id, volume->write_handle(m_scratch_field), src, dst, stage, stage);
}

References MayaFlux::Portal::Graphics::get_shader_foundry(), MayaFlux::Buffers::VolumeFieldProcessor::get_volume(), m_scratch_field, and m_target_field.

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