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
6efd8782fe
Tweaks coefficients some more; makes sure that data is never larger than the intermediate buffers.
2020-09-02 20:14:41 -04:00
8bab9d5d60
Corrects S-Video and composite generation for RGB[1/2/4] sources.
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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
6ef1dfd8be
Sets a more realistic colour subcarrier amplitude.
2020-09-02 15:52:05 -04:00
7e58648743
Corrects front-running bug, plays further with colour amplitude.
2020-09-02 15:51:48 -04:00
0f0c3e616d
Tweaks some numbers.
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I'm largely treading water here. Probably time to think about the race.
2020-09-02 08:17:01 -04:00
c7ce65ea4c
Attempts fully to restore composite video.
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Subject to some sort of nasty race condition for the time being.
2020-09-02 08:03:10 -04:00
c36247b609
Ensures reuse of offset buffers.
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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
15296e43a4
Attempts correctly to set up the CPU side of a composite video pipeline, at least.
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So: I think this is really close, but I'm out of time for the day.
2020-09-01 21:58:33 -04:00
f2929230a2
[Experimentally] introduces blending between computed S-Video fragments.
2020-09-01 21:37:36 -04:00
bf252b8061
Fixes sizing of buffers to the current output.
2020-09-01 21:33:54 -04:00
9e2bf2af7e
Restricts S-Video processing to updated lines.
2020-09-01 21:27:40 -04:00
245f2654f0
Shifts S-Video processing into the compute shader.
2020-09-01 20:37:11 -04:00
67ca298a72
Forces a no-op compute shader into the S-Video pipeline.
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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
67d4dbf91a
Starts girding for a third pipeline.
2020-08-31 20:01:59 -04:00
b344269140
I think I accept the need for intermediate steps now.
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This allocates storage.
2020-08-30 20:21:01 -04:00
bb547610f2
Adds commentary, shrinks some intermediate texture sizes.
2020-08-30 12:06:29 -04:00
1e1f007bb7
Possibly convinces myself that no-separation chroma/luma isn't practical.
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... as appealing as it may be, were filters perfect.
2020-08-29 21:25:49 -04:00
c40d858f02
Switches back to angular stuff at input resolution; ensures all S-Video modes work.
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Now to roll back onto composite. Fingers crossed!
2020-08-29 20:54:46 -04:00
3d564d85fd
Proves that per-pixel sine/cos evaluation avoids phase issues.
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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
02cea40ffa
Attempts to avoid introducing phase error in scanToComposition.
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Also brightens S-Video up to RGB levels.
2020-08-25 22:41:37 -04:00
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
807cb99f6d
Composite angles are signed.
2020-08-23 21:39:04 -04:00
8b6879a782
Brief detour: introduces myself to C++11 multiline string literals.
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A full cleaning coming soon, I imagine.
2020-08-23 21:18:38 -04:00
7ca0362f23
Treads water.
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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
56c7bd242a
Marginally tidies.
2020-08-22 16:38:36 -04:00
5c6112415a
Sets appropriate clear colour for composition render pass.
2020-08-21 22:41:54 -04:00
bf6a0c9fc4
Achieves a return of composite colour for RGB-producing machines.
2020-08-21 22:06:36 -04:00
d54b937ab6
Starts trying to do actual composite processing.
2020-08-21 21:11:25 -04:00
7c23c32e44
Corrects composition colour phase.
2020-08-20 20:45:45 -04:00
4e21d24b5f
Corrects composition colour amplitude.
2020-08-20 20:34:37 -04:00
ad6fb85fda
Corrects use of composition buffer.
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Something is still very obviously amiss in colour processing somewhere down the line, but the correct forms are once again visibly in evidence.
2020-08-20 20:21:28 -04:00
5dc39a5d24
Adds the composition render pass.
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Albeit that something here doesn't work at present.
2020-08-19 21:56:53 -04:00
3597f687de
Continues sidling towards composite & S-Video handling.
2020-08-19 21:20:06 -04:00
8811506adf
Starts towards building a compound[/composition?] buffer.
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I now need to discover whether I can use natural integer texture coordinates.
2020-08-17 22:10:02 -04:00
11dec6fc0f
Avoids a redundant clear.
2020-08-17 22:09:15 -04:00
59c4c8233f
Generalises existing scanToDisplay to add lineToDisplay.
2020-08-17 21:15:19 -04:00
9da79d2d81
Clarifies scaling logic.
2020-08-17 20:29:46 -04:00
246b474a25
Removes ONE_BIG_LOCK, having effectively neutered it anyway.
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Starts work on more explicit API usage validation. Maybe the issue isn't a race condition?
2020-08-16 22:09:25 -04:00
27e8a3a1b5
Obeys modals' zoom.
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Subject to an attempt at factoring aspect ratio differences.
2020-08-16 21:11:43 -04:00
745797b596
Introduces a stencil buffer plus the inter-frame clearing it allows.
2020-08-16 16:42:32 -04:00
940e9e037e
Adds first_scan to LineMetadata.
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Also reorders `Line` fields to match `Scan` fields, just for visual consistency.
2020-08-16 08:59:37 -04:00
512c0079a9
Makes thread safe.
2020-08-15 21:52:55 -04:00
645c29f853
Adds an intermediate buffer to correct inter-frame smoothing.
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Also goes someway back to the old scan output scheduling, albeit presently with limited thread safety.
2020-08-15 21:24:10 -04:00
e55945674d
Reduces main thread blocking.
2020-08-14 22:16:49 -04:00
7ac88536dd
Respects machine aspect ratio.
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To an extent. Doesn't currently deal with cropping of machines when the window aspect ratio is smaller.
2020-08-14 21:24:25 -04:00
230b9fc9e6
Permits multiple simultaneous scan reading ranges.
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Also updates the OpenGL scan target as per the latest movements of things.
2020-08-12 22:08:41 -04:00
27ca782cac
Enables blending; attempts to enable frame preservation.
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The latter seems to be evidencing a double buffer at play. More investigation required.
On the plus side, the direct route is still well within GPU budget at 4k on my Core M. So a huge improvement there.
2020-08-12 19:34:07 -04:00
a136a00a2f
Takes a shot at adding RGB -> S-Video and composite conversion, for all RGB types.
2020-08-11 22:11:50 -04:00
637ec35d6a
Adds getters for standard colour-space conversion matrices.
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These are just more details on the meaning of the colour spaces, so I think they belong here.
2020-08-11 19:58:57 -04:00
Thomas Harte