![]() There are other performance penalties involved in clearing depending on platform, so the gist of it is it’s never a bad idea to avoid clearing if you can. Sometimes clearing a buffer is necessary, but you can avoid the cost if you’re going to overwrite the contents and you know where (by marking it in the stencil). One interesting performance decision for the GBuffer is not clearing it at the start of the frame. The last entry in the GBuffer is the emissive lighting, which becomes the main lighting buffer from now on. While it’s a little large for my taste, normals tend to want as much bit-depth as possible, especially if no compression schemes are used. The first texture contains normals and roughness, which is quite standard these days, in 16-bit floating point. The GBuffer for Mafia packs quite a lot of information. There are some odd choices like the electricity wires which I assume have large bounding boxes, but most of it makes sense and probably costs little compared to what it saves. Subsequent drawcalls fail the depth test often after that, avoiding wasted work. ![]() Objects seem to be relatively well selected and sorted with depth and size, as by drawcall 120 we actually have a lot of the biggest content in the depth buffer with very simple shaders. Depth PrepassĪs we know, a depth prepass is often a careful balance between the time you spend doing it and the time you save by more effective occlusion. Let’s dive right in: I’ll make you a rendering offer you can’t refuse. I chose a nighttime city scene as I find it more moody and challenging to get right. Tommy looks like he means business with his jacket and fedora, and thus our frame analysis begins. ![]() It is a DX11 deferred engine on PC, and RenderDoc 1.13 was used to capture and analyze. Hangar 13 use their own technology to take on open worlds and stories, previously used for Mafia III, to bring Tommy and the Salieri family to life. The game is relatively linear and very story focused, whose narrative I personally found gripping and worthy of being compared to Scarface or Goodfellas. Mafia: Definitive Edition (2020) is a remake of the much-loved gangster classic Mafia (2002), originally released for PS2 and Xbox. ![]()
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