container_image()

std::shared_ptr< Core::VKImage > MayaFlux::Yantra::TextureExecutionContext::container_image ( const Kakshya::TextureContainer &  container, uint32_t  layer  )

inlineprivate

The container's pixels as a GPU image, without allocating one per call.

The context retains its own image. TextureLoom creates one when its allocation properties change, then the container uploads current pixels into it on every call.

The image is reused in place, so the previous dispatch on this context must have completed before the next call, as it must for the output image.

Returns

The input image, or nullptr when the container has no usable data.

Definition at line 610 of file TextureExecutionContext.hpp.

    {
        const uint32_t layers = container.get_layer_count();
        const bool array = layers > 1;
        const ImageKey key {
            .width = container.get_width(),
            .height = container.get_height(),
            .layers = layers,
            .format = container.get_format(),
            .kind = array ? ImageKey::Kind::SAMPLED_ARRAY : ImageKey::Kind::SAMPLED_2D,
        };
 
        const size_t staging_bytes = container.byte_size() * (array ? layers : 1U);
        if (!m_upload_staging) {
            m_upload_staging = Buffers::create_image_staging_buffer(staging_bytes);
        } else if (staging_bytes > m_upload_staging->get_size_bytes()) {
            m_upload_staging->resize(
                static_cast<size_t>(static_cast<float>(staging_bytes) * Buffers::k_buffer_growth_factor), false);
        }
 
        auto image = Portal::Graphics::TextureLoom::instance()
                         .acquire_cached_image(m_input_cache, key);
        if (!image)
            return nullptr;
 
        const bool uploaded = array
            ? container.upload_image_array(image, m_upload_staging)
            : container.upload_image(image, layer, m_upload_staging);
        return uploaded ? image : nullptr;
    }

References MayaFlux::Kakshya::TextureContainer::byte_size(), MayaFlux::Kakshya::TextureContainer::get_format(), MayaFlux::Kakshya::TextureContainer::get_height(), MayaFlux::Kakshya::TextureContainer::get_layer_count(), MayaFlux::Kakshya::TextureContainer::get_width(), image, MayaFlux::Kakshya::TextureContainer::upload_image(), MayaFlux::Kakshya::TextureContainer::upload_image_array(), and MayaFlux::Portal::Graphics::ImageKey::width.

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