It's almost like a caricature of a CRT. I can see the novelty, but hope that people aren't lead to believe monitors looked like this.
I think what bothers me most is the horizontal line that slowly moves across the screen every few seconds. It's an artifact of recording a CRT on film and doesn't occur when you look at a real monitor...
A horizontal-line artifact (not the one depicted in the shader) could totally happen, if you were over-driving a monitor with a higher pixel clock than it was happy with. With this kind of artifact, the two halves of the image would also be slightly horizontally misaligned with respect to one-another, too.
It could happen in home computers connected through the antenna input. I think if power was slightly off the desired frequency this could also happen, but we’d need to test.
It also happens with digital cameras for similar reasons, due to CCD scanning. But yeah, that doesn't happen looking directly at a CRT.
The bloom is also too blobby, because it's a gaussian blur. I ran into the same issue trying to implement a similar effect. The bloom shape needs to sharper to look realistic -- which also means unfortunately a non-separable blur.
> The other surprising thing is that you could actually run the Z80 in parallel with your 68000 when running a Genesis game. We used the Z80 as a sound co-processor running MIDI and playing sampled drums without bothering the 68000.
I always thought that was a key reason to include a Z80. A dedicated sound processor (often Z80) was a mainstay of arcade games from the mid-80s and onward and SEGA's engineers would surely have been familiar with such a design. It might even have helped when porting arcade games.
