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	Close Analysis of Gran Turismo 5 trailer, not so impressed. There's no surprise that FORZA Motorsport 3 is the best looking car simulation game present at the moment with release month already revealed for October 2009. Several gameplay and replay sequences are available on many popular websites which shows brilliant next-gen graphics of FM3 and explains the reason why Forza Motorsport 3 director Mr. Dan Greenwalt is so proud and excited about this game. One fact remains, despite of so many years in development of Gran Turismo 5, Polyphony Digital still didn't reveal any actual ingame gameplay footage during Sony E3 Press Conference 2009 but what could be the reason, we are about to find out why? Lets take a short walk back our memory lane before we proceed to upcoming GT5. Gran Turismo 5: Prologue Several sources have confirmed that GT5: Prologue wasn't true native 1080p. 1080p resolution means 1920(verticle)1080(horizontal) resolution lines. Whereas GT5 Prologue only supports 12801080 resolution which is not considered as true 1080p. Click on this to check it out yourself. A better example can be given by using an illustration below. 1080p Native means, 1920x1080 lines (2,073,600 pixels in total) of progressive image. In 1:1 pixel mapping GT5:P game would rather look elongated leaving left/right resolution area blank and therefore making game impossible to play. In order for game to look normal (or completely filled screen), scaling/stretching is required and therefore losing a title of being native 1080p game. So if Gran Turismo 5 is being developed using the same engine of GT5: Prologue, it is highly unlikely game will be 1080p native. But then again we don't have any confirmation from developers Polyphony Digital yet, so I guess all of us have to wait. Why FORZA 3 Graphics are better then GT5 at the moment? Amazingly Forza 3 developers Turn 10 have excelled and perfected their graphics details in a very important key area which GT5 still has to work on. That key area is penumbra or soft shadows detail information (extremely important to provide realism in game). To achieve dynamic lighting/shades/shadows (penumbra/umbra) detail; Xbox 360 uses its built-in DirectX feature along with ATI GPU Chipset to produce all these important aspects perfectly. On the other hand PS3 does not possess any of these qualities therefore resulting in artificial/poor or wrong shadow detail. It is quite evident in many previously compared titles that PS3 shadow/shades and lighting detail are either too dark or too light thus ruining the whole gaming experience especially when it come to dark/horror games. *Umbra/Penumbra Detail:* (Terms of physics/lighting) The shadow volume behind an object lit by an area light source (in contrast to a point light source) doesn't have sharp boundaries. This is caused by the fact that each point in the boundary area is only partially shadowed. The area (volume) in full shadow is the umbra, the boundary area the penumbra. Example of latest GT5 trailer shows Shadow/Shades/Lighting details Mess. First image Characters walking under extremely dark shadowed area are well lit. The person marked as 'Wrong Shadow Detail' should have half body under shadow detail and upper half under light source but it seems the whole body is in front of light source and is still reflecting self shadow in shaded area. Second Image Wrong shadow detail/information as light source is being displayed at different angle, whereas dark shadow of car is being generated at total different angle. Other characters are missing shadow detail. Third Image When talking about realism in car simulation games, these things are given extreme importance. *Fourth Image* Another angle. Fifth Image Check out last cars, missing shadow detail on nearly 4 cars. Sixth Image Its no surprise that previous GT gameplay trailers Polyphony Digital have always included CGI/FMV sequence in between with actual gameplay video. As this image directly contradicts with previous image of GT5 WRC image taken from trailer. Therefore we have to consider it as could be target detail level which can be expected from GT5. Seventh Image Its no surprise that previous GT gameplay trailers Polyphony Digital have always included CGI/FMV sequence in between with actual gameplay video. As this image directly contradicts with previous image of GT5 WRC image taken from trailer. Therefore we have to consider it as could be target detail level which can be expected from GT5. FORZA Motorsport 3 Screenshot Image says it all. Analysis Report: Great deal of improvement required in graphics department. Although GT5 is going to feature lot more cars and tracks when compared to Forza Motorsport 3 but graphics wise Polyphony Digital have to improve a lot in many key areas before it can be showcased as final product by next year GDC or Sony E3 2010 press conference. Written By: Lincoln Anderson Date: 06-03-2009

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