Thomas Harte
bcaceff378
Simplifies in-Metal transform logic, loading responsibility for setup onto the CPU.
...
I think I've also finally excised whatever order-of-operations issue I was having with regard to non-4:3 displays.
2020-09-10 20:32:58 -04:00
Thomas Harte
d7b405c6f8
Ensures direct luminance -> 'RGB' video doesn't go down the composition pipeline.
2020-09-10 13:20:40 -04:00
Thomas Harte
edf8cf4dc6
Completes the set of with/without gamma, and ensures correct alpha selection.
...
Also culls some other repetitive TODOs.
2020-09-09 19:28:38 -04:00
Thomas Harte
dfcc8e9822
Switches some of the interpolated fields to half precision.
2020-09-09 18:17:05 -04:00
Thomas Harte
016e96e6f8
Extends usage of half. Possibly towards its conclusion.
2020-09-09 15:10:19 -04:00
Thomas Harte
e7ce03c418
Attempts to ensure initial finalised line texture state.
...
This was an attempt to remove the vertical line on the left of a composite display. Obviously the cause is not as suspected.
2020-09-09 13:15:21 -04:00
Thomas Harte
3d392dd81d
Completes conversion of composite & S-Video per-pixel processing to 16-bit floats.
2020-09-09 13:02:04 -04:00
Thomas Harte
42d810db7f
Switches per-pixel uniforms to halfs.
2020-09-09 10:53:09 -04:00
Thomas Harte
18571e8351
Also calculates a chroma kernel size, though it isn't used for anything yet.
2020-09-08 20:08:56 -04:00
Thomas Harte
dda1649ab7
Introduces smaller luma kernel functions where useable.
2020-09-08 19:55:37 -04:00
Thomas Harte
c82e0df071
Starts a transition towards half-precision arithmetic.
2020-09-08 19:37:36 -04:00
Thomas Harte
06b7ea5a6e
Strips the luma kernel back to 1d.
2020-09-08 19:15:19 -04:00
Thomas Harte
c49fcb9ec9
Based on further play: one box filter to separate luma/chroma, another to filter chroma, plus a FIR sharpen on luma.
2020-09-08 16:35:05 -04:00
Thomas Harte
0e44d6d214
Experiments with an all-box filter.
2020-09-08 16:19:08 -04:00
Thomas Harte
6adad7fbf5
Starts experimenting again with box filters.
2020-09-07 22:47:49 -04:00
Thomas Harte
de6ed7b615
Corrects phase-linked luminance support.
2020-09-07 20:53:28 -04:00
Thomas Harte
07dcb4dbb1
Starts reintroducing brightness, gamma and transparency for composite and S-Video pipelines.
2020-09-07 18:19:13 -04:00
Thomas Harte
e99896eadc
At least nominates alpha, gamma and brightness to metal.
2020-09-04 16:07:58 -04:00
Thomas Harte
489701afcb
Fixes window resizing.
2020-09-03 21:28:39 -04:00
Thomas Harte
55e576cc57
Ensures unpainted areas in composite displays have a non-asymptotic effect on luminance calculations.
2020-09-03 21:10:30 -04:00
Thomas Harte
6bd8ec9545
Alas, 1.0 seems to be the limit for proper artefact colour.
2020-09-03 20:53:45 -04:00
Thomas Harte
5cd8d86eef
Switches to dynamic generation of the 'sharpness' filter, correcting issues with the Apple II (amongst others).
2020-09-03 20:48:44 -04:00
Thomas Harte
74d0acdaec
Fixes non-RGB colour composite generation.
...
The hard-coded sharpen filter proves to be a really bad fit for the Apple II though.
2020-09-03 19:04:17 -04:00
Thomas Harte
0288a1974b
Tries: separate filters for chroma and luma, plus a post-separation sharpen filter on the latter.
2020-09-03 13:18:21 -04:00
Thomas Harte
6efd8782fe
Tweaks coefficients some more; makes sure that data is never larger than the intermediate buffers.
2020-09-02 20:14:41 -04:00
Thomas Harte
8bab9d5d60
Corrects S-Video and composite generation for RGB[1/2/4] sources.
...
Also toys with a double luminance filter in order to try to sharpen chrominance. But maybe I should be looking at other convolutions entirely?
2020-09-02 19:13:54 -04:00
Thomas Harte
7e58648743
Corrects front-running bug, plays further with colour amplitude.
2020-09-02 15:51:48 -04:00
Thomas Harte
0f0c3e616d
Tweaks some numbers.
...
I'm largely treading water here. Probably time to think about the race.
2020-09-02 08:17:01 -04:00
Thomas Harte
c7ce65ea4c
Attempts fully to restore composite video.
...
Subject to some sort of nasty race condition for the time being.
2020-09-02 08:03:10 -04:00
Thomas Harte
c36247b609
Ensures reuse of offset buffers.
...
There seems to be some sort of epic race condition as the drawing pipeline lags though. Will need to investigate.
2020-09-01 22:11:48 -04:00
Thomas Harte
15296e43a4
Attempts correctly to set up the CPU side of a composite video pipeline, at least.
...
So: I think this is really close, but I'm out of time for the day.
2020-09-01 21:58:33 -04:00
Thomas Harte
f2929230a2
[Experimentally] introduces blending between computed S-Video fragments.
2020-09-01 21:37:36 -04:00
Thomas Harte
bf252b8061
Fixes sizing of buffers to the current output.
2020-09-01 21:33:54 -04:00
Thomas Harte
9e2bf2af7e
Restricts S-Video processing to updated lines.
2020-09-01 21:27:40 -04:00
Thomas Harte
245f2654f0
Shifts S-Video processing into the compute shader.
2020-09-01 20:37:11 -04:00
Thomas Harte
67ca298a72
Forces a no-op compute shader into the S-Video pipeline.
...
The intention is to restrict the area acted over, and to do the S-Video filtering in there. Then I'll just need two such stages for composite.
2020-09-01 18:39:52 -04:00
Thomas Harte
67d4dbf91a
Starts girding for a third pipeline.
2020-08-31 20:01:59 -04:00
Thomas Harte
b344269140
I think I accept the need for intermediate steps now.
...
This allocates storage.
2020-08-30 20:21:01 -04:00
Thomas Harte
bb547610f2
Adds commentary, shrinks some intermediate texture sizes.
2020-08-30 12:06:29 -04:00
Thomas Harte
1e1f007bb7
Possibly convinces myself that no-separation chroma/luma isn't practical.
...
... as appealing as it may be, were filters perfect.
2020-08-29 21:25:49 -04:00
Thomas Harte
c40d858f02
Switches back to angular stuff at input resolution; ensures all S-Video modes work.
...
Now to roll back onto composite. Fingers crossed!
2020-08-29 20:54:46 -04:00
Thomas Harte
3d564d85fd
Proves that per-pixel sine/cos evaluation avoids phase issues.
...
Even in PAL mode. But I'd rather not _require_ this as it kind of negates directly-sampled input.
2020-08-29 18:53:37 -04:00
Thomas Harte
02cea40ffa
Attempts to avoid introducing phase error in scanToComposition.
...
Also brightens S-Video up to RGB levels.
2020-08-25 22:41:37 -04:00
Thomas Harte
e502d336db
Having decided that these things probably need to be separate, starts drilling down on S-Video.
2020-08-25 22:05:19 -04:00
Thomas Harte
807cb99f6d
Composite angles are signed.
2020-08-23 21:39:04 -04:00
Thomas Harte
7ca0362f23
Treads water.
...
Difficult current question: why does the Atari 2600's display change colours as the display tries to achieve horizontal lock? Phase should be unchanged. Ergo something is amiss.
2020-08-23 21:03:26 -04:00
Thomas Harte
56c7bd242a
Marginally tidies.
2020-08-22 16:38:36 -04:00
Thomas Harte
5c6112415a
Sets appropriate clear colour for composition render pass.
2020-08-21 22:41:54 -04:00
Thomas Harte
bf6a0c9fc4
Achieves a return of composite colour for RGB-producing machines.
2020-08-21 22:06:36 -04:00
Thomas Harte
d54b937ab6
Starts trying to do actual composite processing.
2020-08-21 21:11:25 -04:00
