By: Exophase (exophase.delete@this.gmail.com), August 1, 2016 11:35 am
Room: Moderated Discussions
Gabriele Svelto (gabriele.svelto.delete@this.gmail.com) on August 1, 2016 6:48 am wrote:
> In case of very small primitives this might
> not be true, with tiling being detrimental from a BW perspective. IIRC PowerVRs go to great lengths
> to reduce this by discarding primitives that won't yield any visible pixels very early (I'm not talking
> about pixel-by-pixel overdraw here, I'm talking about removing primitives so small - or so thin -
> that they won't generate any visible fragments or trivially covered by other primitives).
That's interesting. Do you think they also special-case single pixel primitives, or is that not very worthwhile?
> In case of very small primitives this might
> not be true, with tiling being detrimental from a BW perspective. IIRC PowerVRs go to great lengths
> to reduce this by discarding primitives that won't yield any visible pixels very early (I'm not talking
> about pixel-by-pixel overdraw here, I'm talking about removing primitives so small - or so thin -
> that they won't generate any visible fragments or trivially covered by other primitives).
That's interesting. Do you think they also special-case single pixel primitives, or is that not very worthwhile?