Textured raycasting TMS9918A

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Por geijoenr

Champion (269)

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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.

Por PingPong

Prophet (3760)

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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?

Por geijoenr

Champion (269)

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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.

Por edoz

Prophet (2392)

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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...

Por Mafcase

Master (246)

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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

Por geijoenr

Champion (269)

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15-08-2020, 21:49

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

Por santiontanon

Paragon (1485)

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16-08-2020, 08:18

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

Por ARTRAG

Enlighted (6543)

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16-08-2020, 08:44

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

Por Manuel

Ascended (18151)

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16-08-2020, 11:23

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

Por ARTRAG

Enlighted (6543)

Imagen del 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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