Second Reality port notes

Guidelines

• OpenGL is used for 2D presentation only, all 3D transformations are computed using demo code
• Original file layout used when possible
• Ported code should be resolution-independent and framerate-independent
• Pixel art upscaled with 4xbrz

Parts

Alkutekstit I - Alkutekstit II (U2A) - Alkutekstit III (Pam) - Title - Glenz - Tunneli - Techno - Panic - Scroller - Lens - Plzpart - Dots - Raytrace - Sinusfield - Vector (U2E) - Credits

U2A

• Uses same code as U2E

Glenz

http://www.youtube.com/watch?v=uAJ-S0wK1wE

• Polygon color from the original 256-color palette
• Object drawing reordered to use GL blends for transparency
• Workaround for colors: can't use real indexed colors

Tunneli

• Original code in Pascal
• Each tunnel dot drawn in fragment shader

Techno

• Work in progress

Lens

http://www.youtube.com/watch?v=NhS09o7Pny8

• Firfade and lens distortion reimplemented in GLSL
• Parameters computed in real time instead of pre-computed

Plzpart

• Work in progress

Dots

http://www.youtube.com/watch?v=endAqm33rtg

• Dot drawn in fragment shader
• Floor gradient drawn in fragment shader
• Floating point arithmetic for better dot positioning

Vector city (U2E)

http://www.youtube.com/watch?v=kG_CK6irNx4

• Flat shading using original 256-color palette
• Gouraud shading implemented in GL fragment shader to prevent color banding
• Floating point arithmetic for smoother animation
• Workaround for window color: force flat shading
• Making of: http://www.youtube.com/watch?v=JcQXDp-x2HA