MotoGP: what went right/wrong

Inscrit depuis 6889 Jours

http://gamasutra.com/features/20060808/motogp_01.s...

Intresting article from gamemaker himself; they had some odd coding problems with ms tools.

The single biggest performance drain on MotoGP’06 wasn’t the number of vertices or textures but the number of draw calls.

In November 2005 our game was running at 12fps, with the render loop taking nearly 2 frames.

That month news came through from Microsoft that the changes to the Xbox360 SDK that would allow us to circumvent these draw commands wouldn’t be ready in time for our launch. We were in very serious trouble indeed.

Neil, one of our engineers, set about moving the render loop onto its own processor core. This was a major engineering challenge that took 6 weeks to complete, but even then the renderer was running over a frame.

Another engineer, Matt, eventually solved the problem by writing an offline automatic occlusion system. It would travel round the track and take snapshots of the scene every few yards – and query the GPU to see which draw calls resulted in pixels being written to the screen. At run time it would not execute draw calls that didn’t contribute to the scene, and this cut our draw call count in half. The system has to revert back to frustum culling if you stray too far from the track.

I think he is talking about inability of doing efficient z-depth logic on 360, which is odd as 360 (tiling renderer) has superior hidden surface removal.

En réponse à

http://gamasutra.com/features/20060808/motogp_01.shtml

Intresting article from gamemaker himself; they had some odd coding problems with ms tools.

[quote]The single biggest performance drain on MotoGP’06 wasn’t the number of vertices or textures but the number of draw calls.

In November 2005 our game was running at 12fps, with the render loop taking nearly 2 frames.

That month news came through from Microsoft that the changes to the Xbox360 SDK that would allow us to circumvent these draw commands wouldn’t be ready in time for our launch. We were in very serious trouble indeed.

Neil, one of our engineers, set about moving the render loop onto its own processor core. This was a major engineering challenge that took 6 weeks to complete, but even then the renderer was running over a frame.

Another engineer, Matt, eventually solved the problem by writing an offline automatic occlusion system. It would travel round the track and take snapshots of the scene every few yards – and query the GPU to see which draw calls resulted in pixels being written to the screen.  At run time it would not execute draw calls that didn’t contribute to the scene, and this cut our draw call count in half. The system has to revert back to frustum culling if you stray too far from the track.[/quote]

I think he is talking about inability of doing efficient z-depth logic on 360, which is odd as 360 (tiling renderer) has superior hidden surface removal.

Acert93

Inscrit depuis 7113 Jours

I believe it is the GPU render calls. There is a significant overhead for this in DX9 due to the API and some older hardware. Vista resolves this to a degree and will be one way in which DX9 hardware is faster on Vista than XP. It sounds like the API update from MS to reduce the draw call latency was not out. Kind of confused why so many various parts of the 360 have taken so long to get running. We all heard about the tiling API issues and later additions to smooth things over; seems there is still a bit of work left to be done.

En réponse à

Now that I retired I can play more MGS games.

Optimusv2

Inscrit depuis 7034 Jours

This is some interesting stuff.

Hey acert is the draw call latency no longer an issue now? I hope its fixed.

I read that entire thing awesome awesome awesome :)

En réponse à

Blue Dragon Blue Dragon 青いドラゴン

Acert93

Inscrit depuis 7113 Jours

I don't know, a dev was talking about it a couple months back. MS is touting it as a significant reason to get Vista, even for older games, so you would think the 5-10% increase in performance would be something 360 devs would be all over.

En réponse à

Now that I retired I can play more MGS games.

LEBATO

Inscrit depuis 7264 Jours

Another thing that went wrong: Funds, a developer admitted it was a game on a small budget.

The game was still really good and I don't regret buying it.

En réponse à

Did you agree with me? Yes, No? Visit http://www.lebato.blogspot.com and see if we agree on something.

deftangel

Inscrit depuis 7010 Jours

The tiling performance improvements to the API only went out in May I think, so probably a bit too late to incorporate into MotoGP. They would have had to have knocked the game back by a couple of months if they wanted to rework that part.

En réponse à

lukasblue

Inscrit depuis 6889 Jours

Posté par Acert93

Kind of confused why so many various parts of the 360 have taken so long to get running.

On this i agree completely. It appears to me, ati/ms just put together some progressive hardware without clear knowledge how to control it. They making software tools by the way (as it goes). Well, good time for MS to show how good coders they are.

I think this article is the first of its kind that 360 dev is actually talking to media in such manner.

En réponse à

Denjinflash

Inscrit depuis 7116 Jours

Posté par lukasblue

I think this article is the first of its kind that 360 dev is actually talking to media in such manner.

yeah, it's nice. this game was great for me, too.

En réponse à

Il faut etre identifie pour participer au forum !

Quoi de neuf ?

Membres
Annonces

samnite Je suis en train de faire Atomfall, bah c'est franchement pas mal. Le système de quêtes à indices, c'est assez cool, ça rapelle Deathloop, pour ceux qui ont le Game Pass, essayez le ! (il y a 7 Heures)
reneyvane @face2papalocust: L'avantage de sortir d'abord la collection sur PS5, c'est de laisser le temps à ce publique de découvrir le monde & l'histoire avant d'enchainer avec Gears-E-Day. (il y a 1 Jour)
face2papalocust @reneyvane: Ca sera plus un gears collection style Masterchief collection je pense qui sortira avant le Eday ça sera fin 2026 je pense. (il y a 2 Jours)
reneyvane @SweeneyTodd: En 2026, on fête les 20 ans de la franchise Gears of War, le premier épisode étant sortie en Novembre 2026, ce serait un jolie coup de pub pour sortir Gears-E-Day et arrivé sur PS5 ! (il y a 2 Jours)
SweeneyTodd @GTB: Je rejoins le point de vue mais c'est le 3 ou 4ème Gears du studio et le 5 a plus de 5 ans. Fable c'est sûrement plus gros et complexe ^^ (il y a 2 Jours)
GTB @SweeneyTodd: Vu le zéro com', j'ai de gros doutes pour 2025. Fable, qui a été annoncé bien avant vient en plus d'être reporté à 2026. (il y a 3 Jours)
face2papalocust @Driftwood: c'est plus qu'un doute c'est mort même. (il y a 3 Jours)

Driftwood Il est de nouveau possible de télécharger les vidéos sur le site. Désolé pour le mois et demi de panne. (il y a > 3 Mois)
Driftwood Retrouvez notre review de Rift Apart dès 16h00 aujourd'hui, mais en attendant Guilty Gear -Strive- est en vedette en home ! (il y a > 3 Mois)
Driftwood Le live commence d'ici 30 minutes, voici le lien GSY [url] et celui de Twitch [url] (il y a > 3 Mois)
Driftwood Nouveau live sur Returnal à 14h30 aujourd'hui. (il y a > 3 Mois)
Driftwood Le stream via Twitch, ici : [url] (il y a > 3 Mois)
Driftwood Le stream maison ce sera ici : [url] (il y a > 3 Mois)
Driftwood Rendez-vous à 17h00 pour un direct de 40 minutes sur Returnal (il y a > 3 Mois)

MotoGP: what went right/wrong

South of Midnight

The Hundred Line -Last Defense Academy-

RoadCraft

Notre vidéo d'inZOI

GSY Review : KARMA: The Dark World

Notre retour cabossé sur The First Berserker: Khazan