polutroponBitmap.natvis

<?xml version="1.0" encoding="utf-8"?>
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">

  <UIVisualizer ServiceId="{A452AFEA-3DF6-46BB-9177-C0B08F318025}" Id="1"
                MenuName="Add to Image Watch"/>

  <Type Name="polu::image::bitmap">
    <UIVisualizer ServiceId="{A452AFEA-3DF6-46BB-9177-C0B08F318025}" Id="1" />
  </Type>

  <Type Name="polu::image::bitmap">
    <Expand>
      <Synthetic Name="[type]">
        <DisplayString>UINT8</DisplayString>
      </Synthetic>
      <Synthetic Name="[channels]">
        <DisplayString>RGBA</DisplayString>
      </Synthetic>      
      <Item Name="[width]">w</Item>
      <Item Name="[height]">h</Item>
      <Item Name="[data]">&amp;data[0]</Item>
      <Item Name="[stride]">4*w</Item>
    </Expand>
  </Type>
</AutoVisualizer>

The type that it describe boils down to this

namespace polu::image
{
    struct bitmap
    {
        std::vector<std::byte> data; //Array of RGBA 8bit pixels
        size_t w, h, c; //C is the number of channel *in the original file, but data is always as RGBA pixels
    }
}