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DSP1/Project: Difference between revisions
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!colspan="8"|Basic Info | !colspan="8"|Basic Info | ||
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|'''Opcode''' | |'''Opcode''' | ||
|06 | |06 | ||
|+ | |||
|'''Speed''' | |||
|627 cycles | |||
82.5 μs | |||
|} | |} | ||
'''Project''' is a [[DSP1]] command that calculates where an object in 3D space should appear on the screen. | |||
=== Input Parameters === | |||
* '''X''' is a coordinate | |||
* '''Y''' is a coordinate | |||
* '''Z''' is a coordinate | |||
=== Ouptut Parameters === | |||
* '''H''' is the horizontal screen coordinate | |||
* '''V''' is the vertical screen coordinate | |||
* '''M''' is the enlargement ratio | |||
=== References === | === References === | ||
* https://archive.org/details/SNESDevManual/book2/page/n308 | * subparagraph 5.4.3 on [https://archive.org/details/SNESDevManual/book2/page/n308 page 3-5-18 of Book II] of the official Super Nintendo development manual | ||
* https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L1123 | |||
=== External Links === | |||
* video of rings in ''Pilotwings'' rendered using the help of the Project command: https://youtu.be/YmEKjqgEGpE?t=894 | |||
[[Category:DSP1]] | |||
[[Category:Projection Calculation Commands]] | |||
Latest revision as of 05:30, 10 January 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | 06 | ||||||
| Speed | 627 cycles
82.5 μs | ||||||
Project is a DSP1 command that calculates where an object in 3D space should appear on the screen.
Input Parameters
- X is a coordinate
- Y is a coordinate
- Z is a coordinate
Ouptut Parameters
- H is the horizontal screen coordinate
- V is the vertical screen coordinate
- M is the enlargement ratio
References
- subparagraph 5.4.3 on page 3-5-18 of Book II of the official Super Nintendo development manual
- https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L1123
External Links
- video of rings in Pilotwings rendered using the help of the Project command: https://youtu.be/YmEKjqgEGpE?t=894