Thomas Harte
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bc8787ded6
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Improves macro safety.
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2020-09-15 22:26:33 -04:00 |
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Thomas Harte
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82dbdf7dfc
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Switches to using regular linear interpolation for supersampling.
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2020-09-14 22:36:00 -04:00 |
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Thomas Harte
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8557bb2136
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Adds minor exposition.
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2020-09-14 20:39:52 -04:00 |
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Thomas Harte
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c0c7818d5d
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Reintroduces screenshots.
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2020-09-14 20:33:05 -04:00 |
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Thomas Harte
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ceeadd6a33
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Edges up towards reimplementing screenshots.
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2020-09-13 22:30:17 -04:00 |
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Thomas Harte
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c5e9a74c88
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Uses DisplayMetrics to disable supersampling when too slow.
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2020-09-13 21:07:59 -04:00 |
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Thomas Harte
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d7972a7b86
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Enforces across-the-board supersampling.
I'm damned if I can figure out how to talk an MTKView, or Metal in general, into supersampling so as a first effort this does it in software.
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2020-09-13 19:30:26 -04:00 |
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Thomas Harte
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bcaceff378
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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.
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2020-09-10 20:32:58 -04:00 |
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Thomas Harte
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d7b405c6f8
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Ensures direct luminance -> 'RGB' video doesn't go down the composition pipeline.
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2020-09-10 13:20:40 -04:00 |
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Thomas Harte
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edf8cf4dc6
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Completes the set of with/without gamma, and ensures correct alpha selection.
Also culls some other repetitive TODOs.
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2020-09-09 19:28:38 -04:00 |
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Thomas Harte
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dfcc8e9822
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Switches some of the interpolated fields to half precision.
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2020-09-09 18:17:05 -04:00 |
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Thomas Harte
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016e96e6f8
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Extends usage of half. Possibly towards its conclusion.
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2020-09-09 15:10:19 -04:00 |
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Thomas Harte
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e7ce03c418
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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.
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2020-09-09 13:15:21 -04:00 |
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Thomas Harte
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3d392dd81d
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Completes conversion of composite & S-Video per-pixel processing to 16-bit floats.
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2020-09-09 13:02:04 -04:00 |
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Thomas Harte
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42d810db7f
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Switches per-pixel uniforms to halfs.
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2020-09-09 10:53:09 -04:00 |
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Thomas Harte
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18571e8351
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Also calculates a chroma kernel size, though it isn't used for anything yet.
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2020-09-08 20:08:56 -04:00 |
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Thomas Harte
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dda1649ab7
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Introduces smaller luma kernel functions where useable.
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2020-09-08 19:55:37 -04:00 |
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Thomas Harte
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c82e0df071
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Starts a transition towards half-precision arithmetic.
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2020-09-08 19:37:36 -04:00 |
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Thomas Harte
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06b7ea5a6e
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Strips the luma kernel back to 1d.
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2020-09-08 19:15:19 -04:00 |
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Thomas Harte
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c49fcb9ec9
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Based on further play: one box filter to separate luma/chroma, another to filter chroma, plus a FIR sharpen on luma.
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2020-09-08 16:35:05 -04:00 |
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Thomas Harte
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0e44d6d214
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Experiments with an all-box filter.
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2020-09-08 16:19:08 -04:00 |
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Thomas Harte
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6adad7fbf5
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Starts experimenting again with box filters.
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2020-09-07 22:47:49 -04:00 |
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Thomas Harte
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de6ed7b615
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Corrects phase-linked luminance support.
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2020-09-07 20:53:28 -04:00 |
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Thomas Harte
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07dcb4dbb1
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Starts reintroducing brightness, gamma and transparency for composite and S-Video pipelines.
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2020-09-07 18:19:13 -04:00 |
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Thomas Harte
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e99896eadc
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At least nominates alpha, gamma and brightness to metal.
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2020-09-04 16:07:58 -04:00 |
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Thomas Harte
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489701afcb
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Fixes window resizing.
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2020-09-03 21:28:39 -04:00 |
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Thomas Harte
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55e576cc57
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Ensures unpainted areas in composite displays have a non-asymptotic effect on luminance calculations.
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2020-09-03 21:10:30 -04:00 |
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Thomas Harte
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6bd8ec9545
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Alas, 1.0 seems to be the limit for proper artefact colour.
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2020-09-03 20:53:45 -04:00 |
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Thomas Harte
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5cd8d86eef
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Switches to dynamic generation of the 'sharpness' filter, correcting issues with the Apple II (amongst others).
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2020-09-03 20:48:44 -04:00 |
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Thomas Harte
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74d0acdaec
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Fixes non-RGB colour composite generation.
The hard-coded sharpen filter proves to be a really bad fit for the Apple II though.
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2020-09-03 19:04:17 -04:00 |
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Thomas Harte
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0288a1974b
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Tries: separate filters for chroma and luma, plus a post-separation sharpen filter on the latter.
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2020-09-03 13:18:21 -04:00 |
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Thomas Harte
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6efd8782fe
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Tweaks coefficients some more; makes sure that data is never larger than the intermediate buffers.
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2020-09-02 20:14:41 -04:00 |
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Thomas Harte
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8bab9d5d60
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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?
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2020-09-02 19:13:54 -04:00 |
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Thomas Harte
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7e58648743
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Corrects front-running bug, plays further with colour amplitude.
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2020-09-02 15:51:48 -04:00 |
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Thomas Harte
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0f0c3e616d
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Tweaks some numbers.
I'm largely treading water here. Probably time to think about the race.
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2020-09-02 08:17:01 -04:00 |
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Thomas Harte
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c7ce65ea4c
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Attempts fully to restore composite video.
Subject to some sort of nasty race condition for the time being.
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2020-09-02 08:03:10 -04:00 |
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Thomas Harte
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c36247b609
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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.
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2020-09-01 22:11:48 -04:00 |
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Thomas Harte
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15296e43a4
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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.
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2020-09-01 21:58:33 -04:00 |
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Thomas Harte
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f2929230a2
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[Experimentally] introduces blending between computed S-Video fragments.
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2020-09-01 21:37:36 -04:00 |
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Thomas Harte
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bf252b8061
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Fixes sizing of buffers to the current output.
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2020-09-01 21:33:54 -04:00 |
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Thomas Harte
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9e2bf2af7e
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Restricts S-Video processing to updated lines.
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2020-09-01 21:27:40 -04:00 |
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Thomas Harte
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245f2654f0
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Shifts S-Video processing into the compute shader.
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2020-09-01 20:37:11 -04:00 |
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Thomas Harte
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67ca298a72
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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.
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2020-09-01 18:39:52 -04:00 |
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Thomas Harte
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67d4dbf91a
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Starts girding for a third pipeline.
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2020-08-31 20:01:59 -04:00 |
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Thomas Harte
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b344269140
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I think I accept the need for intermediate steps now.
This allocates storage.
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2020-08-30 20:21:01 -04:00 |
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Thomas Harte
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bb547610f2
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Adds commentary, shrinks some intermediate texture sizes.
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2020-08-30 12:06:29 -04:00 |
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Thomas Harte
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1e1f007bb7
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Possibly convinces myself that no-separation chroma/luma isn't practical.
... as appealing as it may be, were filters perfect.
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2020-08-29 21:25:49 -04:00 |
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Thomas Harte
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c40d858f02
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Switches back to angular stuff at input resolution; ensures all S-Video modes work.
Now to roll back onto composite. Fingers crossed!
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2020-08-29 20:54:46 -04:00 |
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Thomas Harte
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3d564d85fd
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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.
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2020-08-29 18:53:37 -04:00 |
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Thomas Harte
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02cea40ffa
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Attempts to avoid introducing phase error in scanToComposition.
Also brightens S-Video up to RGB levels.
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2020-08-25 22:41:37 -04:00 |
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