update_pixels_if_dirty()

void MayaFlux::Buffers::TextureProcessor::update_pixels_if_dirty ( )

private

Re-upload pixels to GPU if they changed.

Definition at line 188 of file TextureProcessor.cpp.

{
    if (!m_texture_buffer || !m_texture_buffer->m_texture_dirty) {
        return;
    }
 
    if (m_pixel_source == PixelSource::EXTERNAL_DATA) {
        auto variant = get_variant_source();
        if (!variant) {
            m_texture_buffer->m_texture_dirty = false;
            return;
        }
 
        if (!m_texture_buffer->has_texture()) {
            m_texture_buffer->m_gpu_texture = create_gpu_texture();
        }
 
        auto& loom = Portal::Graphics::get_texture_manager();
 
        if (m_streaming_mode && !m_stream_staging) {
            m_stream_staging = create_image_staging_buffer(
                m_texture_buffer->get_texture()->get_size_bytes());
        }
 
        auto access = Kakshya::as_texture_access(*variant);
        if (!access) {
            m_texture_buffer->m_texture_dirty = false;
            return;
        }
 
        if (m_streaming_mode && m_stream_staging) {
            loom.upload_data(
                m_texture_buffer->get_texture(),
                access->data_ptr,
                access->byte_count,
                m_stream_staging);
        } else {
            loom.upload_data(
                m_texture_buffer->get_texture(),
                access->data_ptr,
                access->byte_count);
        }
 
        m_texture_buffer->m_texture_dirty = false;
 
        MF_DEBUG(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "TextureProcessor: external variant data updated ({} bytes)", access->byte_count);
        return;
    }
 
    if (!m_texture_buffer->has_texture()) {
        m_texture_buffer->m_gpu_texture = create_gpu_texture();
 
        if (auto rp = m_texture_buffer->get_render_processor()) {
            rp->bind_texture(
                m_texture_buffer->get_render_config().default_texture_binding,
                m_texture_buffer->get_texture());
        }
    }
 
    const auto& pixel_data = m_texture_buffer->m_pixel_data;
    if (pixel_data.empty()) {
        return;
    }
 
    auto& loom = Portal::Graphics::get_texture_manager();
 
    if (m_streaming_mode && !m_stream_staging) {
        m_stream_staging = create_image_staging_buffer(
            m_texture_buffer->get_texture()->get_size_bytes());
    }
 
    if (m_streaming_mode && m_stream_staging) {
        loom.upload_data(
            m_texture_buffer->get_texture(),
            pixel_data.data(),
            pixel_data.size(),
            m_stream_staging);
    } else {
        loom.upload_data(
            m_texture_buffer->get_texture(),
            pixel_data.data(),
            pixel_data.size());
    }
 
    m_texture_buffer->m_texture_dirty = false;
 
    MF_DEBUG(Journal::Component::Buffers, Journal::Context::BufferProcessing,
        "TextureProcessor: pixel data updated ({} bytes)", pixel_data.size());
}

References MayaFlux::Kakshya::as_texture_access(), MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, create_gpu_texture(), MayaFlux::Buffers::create_image_staging_buffer(), EXTERNAL_DATA, MayaFlux::Portal::Graphics::get_texture_manager(), get_variant_source(), m_pixel_source, m_stream_staging, m_streaming_mode, m_texture_buffer, and MF_DEBUG.

Referenced by processing_function().

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