Simulation system, processing method, and information storage medium

A processing method comprising:

• performing a moving body process of performing a process of moving a virtual moving body corresponding to a user wearing a head mounted display in a virtual space, the head mounted display having an eyepiece and a display, the head mounted display displays a left-eye image corresponding to a left eye of the eyepiece and displays a right-eye image corresponding to a right eye of the eyepiece;
• performing a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body;
• and
• performing a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the head mounted display, the display process including:
• performing a depth of field process as an image effect process for motion sickness prevention, and a blurring process of the depth of field process blurring, compared with a first display object in a first distance range from the virtual camera, an image of a second display object in a second distance range farther than the first distance range from the virtual camera to generate the display image, the blurring process only blurring the second display object in the second distance range without blurring any display object, including the first display object, located closer to the virtual camera than the second distance range, wherein:
• an in-focus range of a depth of field in the depth of field process includes the first distance range, the first distance range being set by a virtual visual distance that is between the virtual camera and a virtual screen, the virtual visual distance being set based on positions of the eyepiece and the display,
• the display image generated in the display process includes (i) an image of a the first display object located at the virtual screen in the first distance range that has no parallax between the left eye image and the right eye image, and (ii) the image of the second display object in the second distance range that has parallax between the left eye image and the right eye image and is more blurred by the blurring process as compared with the image of the first display object, and
• the in-focus range of the depth of field in the depth of field process does not include the second distance range.

A non-transitory computer-readable information storage medium storing a program for causing a computer to perform steps comprising:

• performing a moving body process of performing a process of moving a virtual moving body corresponding to a user wearing a head mounted display in a virtual space, the head mounted display having an eyepiece and a display, the head mounted display displays a left-eye image corresponding to a left eye of the eyepiece and displays a right-eye image corresponding to a right eye of the eyepiece;
• performing a virtual camera control process of controlling a virtual camera moving in accordance with a movement of the moving body;
• and
• performing a display process of generating an image as viewed from the virtual camera in the virtual space as a display image of the head mounted display, the display process including:
• performing a depth of field process as an image effect process for motion sickness prevention, and a blurring process of the depth of field process blurring, compared with a first display object in a first distance range from the virtual camera, an image of a second display object in a second distance range farther than the first distance range from the virtual camera to generate the display image, the blurring process only blurring the second display object in the second distance range without blurring any display object, including the first display object, located closer to the virtual camera than the second distance range, wherein:
• an in-focus range of a depth of field in the depth of field process includes the first distance range, the first distance range being set by a virtual visual distance that is between the virtual camera and a virtual screen, the virtual visual distance being set based on positions of the eyepiece and the display,
• the display image generated in the display process includes (i) an image of a the first display object located at the virtual screen in the first distance range that has no parallax between the left eye image and the right eye image, and (ii) the image of the second display object in the second distance range that has parallax between the left eye image and the right eye image and is more blurred by the blurring process as compared with the image of the first display object, and
• the in-focus range of the depth of field in the depth of field process does not include the second distance range.