Textured raycasting TMS9918A

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By geijoenr

Champion (281)

Аватар пользователя geijoenr

14-08-2020, 22:33

@santiontanon this calls for a Tales of Popolon 2 Wink

I am thinking in msx2 with the right palette those 4x1 textures have amazing potential.

By PingPong

Prophet (3839)

Аватар пользователя PingPong

14-08-2020, 23:29

may be that the msx1 does not have the same speed brake than the ti/99 (even if the vdp is the same) one could achieve a little more fps?

By geijoenr

Champion (281)

Аватар пользователя geijoenr

15-08-2020, 11:15

yes, it seems the author is facing some challenges due to the 256 bytes memory limit of the TI-99. Probably is easier to do this on an msx.

By edoz

Prophet (2419)

Аватар пользователя edoz

15-08-2020, 15:09

Very cool for a 16 bit machineWink impressive. The TI was my first computer and it is a nice machine. I still have one. The CPU is very powerful but the design to the memory is very poor... very impressive...

By Mafcase

Master (254)

Аватар пользователя Mafcase

15-08-2020, 19:01

edoz wrote:

Very cool for a 16 bit machineWink impressive. The TI was my first computer and it is a nice machine. I still have one. The CPU is very powerful but the design to the memory is very poor... very impressive...

I had one too: A TI 99 4a. Oh man... I spent some nights with 'Parsec' Big smile

By geijoenr

Champion (281)

Аватар пользователя geijoenr

15-08-2020, 21:49

the author optimised it a bit, now is quite faster:
https://www.youtube.com/watch?v=v58_wa0lMaQ

By santiontanon

Paragon (1569)

Аватар пользователя santiontanon

16-08-2020, 08:18

Getting that frame rate at full screen is quite impressive! So much potential for this 4x1 pixel mode!

By ARTRAG

Enlighted (6692)

Аватар пользователя ARTRAG

16-08-2020, 08:44

I'd go for an msx2 game in order to exploit faster i/o and two pages

By Manuel

Ascended (18392)

Аватар пользователя Manuel

16-08-2020, 11:23

ARTRAG: does this technique on MSX2 offer more potential than the one you did with Wouter?

By ARTRAG

Enlighted (6692)

Аватар пользователя ARTRAG

16-08-2020, 12:38

Screen 4 with 4x1 pixels implies a lower resolution than screen 5 with 2x1
You can get an higher frame rate due to the lower number of columns and even if you cannot count on the VDP commands you can unroll the code for any height of the columns
At cost of few KB of automatically generated code, I think it could go faster than mine in screen 5

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