Method Decode

layers/state_tracker/subresource_adapter.cpp:420–432

}

void ImageRangeEncoder::Decode(const VkImageSubresource& subres, const IndexType& encode, uint32_t& out_layer,
                               VkOffset3D& out_offset) const {
    uint32_t subres_index = GetSubresourceIndex(LowerBoundFromMask(subres.aspectMask), subres.mipLevel);
    const auto& subres_layout = GetSubresourceInfo(subres_index).layout;
    IndexType decode = encode - subres_layout.offset;
    out_layer = static_cast<uint32_t>(decode / subres_layout.arrayPitch);
    decode -= (out_layer * subres_layout.arrayPitch);
    out_offset.z = static_cast<int32_t>(decode / subres_layout.depthPitch);
    decode -= (out_offset.z * subres_layout.depthPitch);
    out_offset.y = static_cast<int32_t>(decode / subres_layout.rowPitch);
    decode -= (out_offset.y * subres_layout.rowPitch);
    out_offset.x = static_cast<int32_t>(static_cast<double>(decode) / texel_sizes_[LowerBoundFromMask(subres.aspectMask)]);
}

inline VkImageSubresourceRange GetRemaining(const VkImageSubresourceRange& full_range, VkImageSubresourceRange subres_range) {
    subres_range.levelCount = GetEffectiveLevelCount(subres_range, full_range.levelCount);