Thomas Harte
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97cdfea9e9
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Resolved spurious static analyser complaint: input_size and output_size aren't supposed to have defined values if input or output is null. But whatever.
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2017-02-11 13:36:09 -05:00 |
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Thomas Harte
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fcf8cafb5d
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Sought to ensure that communicating a colour burst in multiple parts doesn't ruin the phase.
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2017-02-06 18:27:44 -05:00 |
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Thomas Harte
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23f3ccd77a
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Made a further attempt to prevent overwrites.
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2017-02-05 17:47:34 -05:00 |
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Thomas Harte
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ebde955356
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This needs to be a memmove as the areas may overlap.
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2017-01-29 16:12:48 -05:00 |
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Thomas Harte
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7fd02e7f4c
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Added an extra flag to avoid potential race condition on is_full_, being reset from the background despite a write area not having been allocated.
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2017-01-29 16:11:29 -05:00 |
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Thomas Harte
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c2d7e36c8f
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Ensured logic for whether composite output is in use is consistent.
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2017-01-25 21:25:03 -05:00 |
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Thomas Harte
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4d6e78e641
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Reinstated temporary Oric-related fix.
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2017-01-24 22:16:15 -05:00 |
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Thomas Harte
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5761c8267b
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[Re-]Eliminated connection between colour subcarrier frequency and monitor output mode.
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2017-01-24 20:48:54 -05:00 |
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Thomas Harte
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b4159295f6
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Switched to using quads for intermediate draws. The specific concern is the flexibility offered in the GL spec as to line drawing algorithms. And even if a driver implements exactly to spec then it should omit the final pixel.
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2017-01-11 21:18:41 -05:00 |
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Thomas Harte
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d0a93409e6
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Made an attempt to simplify in-shader phase calculation, now that output position is a direct multiple of phase.
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2017-01-11 08:18:00 -05:00 |
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Thomas Harte
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4c3669f210
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Reduced precision of input phase, but I'm not necessarily persuaded by it as a move. However it's clear that something is off in that whole area. But if phase is locked by output position, do I need to retain this level of complexity? Also ensured that intermediate buffers prior to the final are sampled using the nearest sampling mode, also to reduce precision errors.
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2017-01-10 22:08:07 -05:00 |
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Thomas Harte
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eeb646868b
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Switched off filtering, at least temporarily, to try to ensure that sampling is all where it should be.
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2017-01-08 19:53:08 -05:00 |
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Thomas Harte
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3d789732a2
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Switched back to full buffer clearing. Until I can figure out the source of noise.
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2017-01-08 19:50:31 -05:00 |
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Thomas Harte
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d2a7d39749
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Ensured the output lock isn't held while talking to the delegate.
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2017-01-08 19:49:21 -05:00 |
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Thomas Harte
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9521718120
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Colour phase is multiplied by 255, not 256.
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2017-01-08 17:21:26 -05:00 |
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Thomas Harte
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28909e33ca
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Eliminated phaseCyclesPerTick as implied.
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2017-01-08 16:48:02 -05:00 |
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Thomas Harte
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79632b1d34
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Instituted de-escalating phase-related extensions, definitively to kill rounding error edges.
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2017-01-08 16:24:22 -05:00 |
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Thomas Harte
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7ad64ff16b
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Made further efforts to support throughput via memory barrier.
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2017-01-08 14:47:16 -05:00 |
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Thomas Harte
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be48c950b4
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Started taking steps towards using a texture barrier where possible to reduce all of my framebuffer binds. Some output appears, but it's not correct.
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2017-01-08 11:13:20 -05:00 |
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Thomas Harte
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0487b8c178
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Definitively eliminated the additional y filtering step; if I'm going to work to ensure always four samples per colour cycle, I can put the channel separation coefficients directly into their shaders, cutting down on samples.
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2017-01-07 16:02:33 -05:00 |
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Thomas Harte
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5740015f56
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Temporarily disabled composite processing to show the pure stream. Fixed both automatic calculations of phase — per line and, at input, per pixel.
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2017-01-07 12:38:00 -05:00 |
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Thomas Harte
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c84004bfa3
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Fixed: colour_cycle_numerator_ doesn't need to be multiplied by the time multiplier because it'll get that for free from the calculation of next_run_length.
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2017-01-06 21:36:19 -05:00 |
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Thomas Harte
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c746a3711f
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Temporarily disabled my attempt to be clever with bilinear filtering when applying a lowpass filter. Will need to investigate.
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2017-01-04 08:06:18 -05:00 |
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Thomas Harte
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aa7774a9a6
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Experimental: up the chroma accuracy, just let the luma go straight through. Subject to figuring out how I'm still losing so much precision.
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2017-01-03 22:41:34 -05:00 |
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Thomas Harte
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a836120945
|
Restored proper colour separation, but somewhere a massive hit in horizontal resolution is happening — much greater than one would expect from the sample size picked. So investigation to come.
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2017-01-03 22:32:07 -05:00 |
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Thomas Harte
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7d60df9075
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Added the option for both intermediate and output shaders to use only a portion of the input/output texture; made an attempt to pick an appropriate proportion in order to align signal sampling with the colour subcarrier.
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2017-01-03 22:16:52 -05:00 |
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Thomas Harte
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f2b8b26bc4
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Started throwing some comments into my shaders.
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2017-01-03 21:16:38 -05:00 |
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Thomas Harte
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34d213dec4
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Decreased Y resolution, again also hopefully temporarily.
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2016-12-10 15:35:38 -05:00 |
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Thomas Harte
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81a102d951
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Upped intermediate buffer size, at least temporarily, while I look for the source of the interference patterns I'm seeing.
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2016-12-10 15:20:10 -05:00 |
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Thomas Harte
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0e71802b92
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Reduced Oric video to single nibble constants. Removed attempt at asynchronous flush as no longer required.
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2016-12-10 14:17:46 -05:00 |
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Thomas Harte
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a549fd1ecc
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Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.
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2016-12-10 13:42:34 -05:00 |
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Thomas Harte
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5216dda675
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Added some brief extra exposition to the texture builder, cut all internal tex_x/y and source_divider stuff from the CRT.
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2016-12-06 19:08:55 -05:00 |
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Thomas Harte
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33d52bb573
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Ensured no over-moving.
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2016-12-06 19:02:18 -05:00 |
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Thomas Harte
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4ff33254e1
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Sought to shift locking back up to the CRT. And to be a bit more RAII-ish.
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2016-12-06 18:48:30 -05:00 |
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Thomas Harte
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60f9ddfde8
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Fixed start test and added incrementation of start locations.
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2016-12-06 08:08:57 -05:00 |
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Thomas Harte
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f388ba11cc
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Missed an initialisation. Fixed!
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2016-12-06 07:26:23 -05:00 |
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Thomas Harte
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0fee8096c1
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Made an attempt to shuffle the texture builder to a similar flush/submit pattern as the input builder. Don't care about thread safety yet, as it's obvious I'm going to need to move that back up to the CRT.
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2016-12-06 07:24:07 -05:00 |
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Thomas Harte
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0edc043378
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Started introducing an extra layer of indirection so as to be able to bind the texture builder to the same flush and submit patern as the array builder.
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2016-12-03 20:47:19 -05:00 |
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Thomas Harte
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cb3c837e30
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Simplified interface by baking in last-minute-only updates.
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2016-12-03 18:19:12 -05:00 |
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Thomas Harte
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0220d33562
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Resolved failure of initial state setting, which was causing tests sometimes to fail.
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2016-12-03 16:42:10 -05:00 |
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Thomas Harte
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c5016a3eaa
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Completed flight of 'Outputs' to postfix underscores.
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2016-12-03 11:02:34 -05:00 |
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Thomas Harte
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7c85cb62e4
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Moved underscores, removed indirections where they're not necessary, converted those names that were still looking very Objective-C and moved the GL fence variable into the private area, where it should always have been.
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2016-11-21 12:14:52 +08:00 |
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Thomas Harte
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bc03e12dc5
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Switched to suffix underscores.
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2016-11-21 11:57:45 +08:00 |
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Thomas Harte
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340607e13e
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Switched the flywheel to suffix underscores.
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2016-11-21 11:48:31 +08:00 |
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Thomas Harte
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e1285028aa
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Removed a redundant clear and some dead code.
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2016-11-21 11:42:45 +08:00 |
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Thomas Harte
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7b38247ab3
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Updated outdated comments.
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2016-11-21 11:40:13 +08:00 |
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Thomas Harte
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d7d0ed378a
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Only the final intermediate buffer needs clearing, on reflection.
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2016-11-21 11:26:07 +08:00 |
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Thomas Harte
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c89345c639
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Reduced buffer size.
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2016-11-21 11:21:14 +08:00 |
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Thomas Harte
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32dbfe947d
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With hindsight, the elimination of this might have been overzealous.
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2016-11-20 10:53:35 +08:00 |
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Thomas Harte
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ef0367d4a4
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Corrected typo.
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2016-11-20 09:12:43 +08:00 |
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Thomas Harte
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5bc165960a
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Completed refactoring.
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2016-11-20 09:12:06 +08:00 |
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Thomas Harte
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fda90c5aef
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Documented.
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2016-11-20 09:11:24 +08:00 |
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Thomas Harte
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c2349ee3f4
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This thing has clearly becoma a real class.
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2016-11-19 20:12:40 +08:00 |
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Thomas Harte
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7857ef774f
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Ensured resets genuinely kill outstanding data.
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2016-11-19 20:09:38 +08:00 |
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Thomas Harte
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a4c7b00ecd
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Fixed code that was causing the failing test.
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2016-11-19 19:55:30 +08:00 |
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Thomas Harte
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f59537bce9
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Added a testing hook, but as of yet no tests.
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2016-11-17 14:06:16 +08:00 |
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Thomas Harte
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aca1fa0577
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Returned some video output. Enough significantly to reduce my paranoia.
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2016-11-17 13:37:53 +08:00 |
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Thomas Harte
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1f91d29434
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Progressed to usage of an array builder and a texture builder up to the point of a successful build.
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2016-11-17 12:26:04 +08:00 |
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Thomas Harte
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0f3b02edb7
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Switched to postfix underscores and gave this class ownership of a texture builder and an array builder, though it presently uses neither.
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2016-11-17 11:00:11 +08:00 |
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Thomas Harte
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57f0648742
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Fleshed out first implementation of ArrayBuilder, albeit that I need to implement exhaustion properly, as soon as I think of a sensible way to handle synchronisation.
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2016-11-17 10:39:30 +08:00 |
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Thomas Harte
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324a1de43d
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Started pulling out array construction as a separate task.
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2016-11-17 09:20:49 +08:00 |
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Thomas Harte
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c04a116a05
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Fixed comment.
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2016-11-16 23:14:56 +08:00 |
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Thomas Harte
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edeafd4d94
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Wait, OpenGL textures go the other way.
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2016-11-16 23:14:15 +08:00 |
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Thomas Harte
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6ac20e0066
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Pushed responsibility for submitting texture contents up to the texture builder, simplifying the interface.
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2016-11-16 23:13:06 +08:00 |
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Thomas Harte
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5c5e44874f
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Even better: why include the 'Input' prefix when there's only one?
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2016-11-16 22:57:17 +08:00 |
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Thomas Harte
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04b2688683
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Attempted to reduce allocations.
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2016-11-16 13:25:50 +08:00 |
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Thomas Harte
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c1a509910d
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Documented this interface, albeit that the English could do with a second pass, and very sightly simplified inline with current usage.
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2016-11-16 13:15:50 +08:00 |
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Thomas Harte
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4d0d5eb919
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Renamed the 'input buffer builder' to the 'input texture builder' to be explicit about what sort of buffer, and killed the prefix since it's namespaced. Also switched to std::vector.
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2016-11-16 12:31:32 +08:00 |
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Thomas Harte
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4ee4400801
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Removed dead code.
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2016-11-16 11:57:22 +08:00 |
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Thomas Harte
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6cb4950db4
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Improved run-off area.
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2016-11-16 11:53:15 +08:00 |
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Thomas Harte
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9ee11d7765
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At the expense of API simplicity, at least for now, resolved the most glaring cause of dirty lines.
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2016-11-16 11:34:05 +08:00 |
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Thomas Harte
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44d3fd6d5b
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Fixed mistimed reset of the target output line. Now all that's left is occasional noise.
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2016-11-16 11:22:12 +08:00 |
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Thomas Harte
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7a737e0790
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Both pathways start with a buffer that clears to black. So no need to keep going on about it.
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2016-11-16 11:12:08 +08:00 |
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Thomas Harte
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f63e849092
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Sought completely to eliminate the outgoing concept of 'clearing zones'.
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2016-11-16 11:10:34 +08:00 |
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Thomas Harte
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294adde344
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Eliminated zoned clearing, in favour of a complete buffer clear on each load and attempted to reduce locking. But imperfectly.
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2016-11-16 10:59:12 +08:00 |
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Thomas Harte
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ccedb6bea6
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Introduced an intermediate buffer that collects lines before flushing them to the output buffer.
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2016-11-16 10:49:18 +08:00 |
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Thomas Harte
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ba2adf8bb1
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Normalised on std::vector rather than std::unique_ptr<uint8_t *> as (probably?) more idiomatic. Improved structure slightly. Introduced a container for line data, albeit one that isn't yet used.
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2016-11-16 10:34:54 +08:00 |
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Thomas Harte
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9c550c594a
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Moved audio work back into its own thread, but this time it queues up an all happens only upon a flush. Hopefully to resolve synchronisation cost concerns.
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2016-11-09 21:17:50 -05:00 |
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Thomas Harte
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eccfdabeab
|
Temporarily disabled thread hop, until I can find a way to batch these things.
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2016-11-03 22:52:02 -04:00 |
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Thomas Harte
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4258401384
|
Implemented flush, added a call to it from the filter speaker's destructor, to ensure no race conditions on accessing the various bits of instance state there and below.
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2016-10-19 21:15:04 -04:00 |
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Thomas Harte
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c628b7c5c5
|
This is the real PAL frequency, I think.
|
2016-10-17 08:05:02 -04:00 |
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Thomas Harte
|
1f857c619b
|
Fixed timing issues. Static box of frame achieved!
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2016-10-12 21:42:36 -04:00 |
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Thomas Harte
|
00e3ad9b04
|
Added a bit more ceiling for lowpass filtering on constrained machines.
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2016-10-10 07:51:01 -04:00 |
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Thomas Harte
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e53455a936
|
Not having read the C++ synchronisation primitives before, this async task queue is probably incorrect. But nevertheless, let's have a quick go at employing it — in a hideously thread unsafe fashion — for audio generation. What can possibly go wrong?
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2016-10-07 16:56:34 -04:00 |
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Thomas Harte
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dab3580111
|
Experimental: can I afford a lower sampling rate if there's a low-pass filter in effect?
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2016-08-22 22:18:05 -04:00 |
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Thomas Harte
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1541273785
|
Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
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2016-08-21 18:13:31 -04:00 |
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Thomas Harte
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c783090980
|
It turns out that the Vic has a 1.6Khz low-pass filter. So added that.
|
2016-08-21 12:13:41 -04:00 |
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Thomas Harte
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fef316932f
|
Moved opening bracket appropriately.
|
2016-07-04 21:14:28 -04:00 |
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Thomas Harte
|
8db44eed3e
|
Added a default implementation of Speaker::skip_samples.
|
2016-07-04 20:48:27 -04:00 |
|
Thomas Harte
|
2bc87ee095
|
Merge branch 'master' of github.com:TomHarte/CLK
|
2016-07-01 16:28:18 -04:00 |
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Thomas Harte
|
eefd0c17b6
|
Actually, I guess that to fulfil the contract I can't silently decide not to draw if I'm being told I definitely need to draw.
|
2016-07-01 16:27:45 -04:00 |
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Thomas Harte
|
ed8f4d0476
|
Added some minor additional bits of documentation.
|
2016-06-30 08:46:29 -04:00 |
|
Thomas Harte
|
4ac619f569
|
glClientWaitSync appears to be a busy wait, at least on my machine. But why wait indefinitely anyway?
|
2016-06-29 21:32:47 -04:00 |
|
Thomas Harte
|
ff53accca0
|
Demonstrated that issue is coloured borders, made a guess as to buffer exhaustion, upped limits as a temporary fix.
|
2016-06-29 21:16:34 -04:00 |
|
Thomas Harte
|
2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr.
|
2016-06-23 20:52:44 -04:00 |
|
Thomas Harte
|
c18cc4c8f5
|
It appears the Vic's output is sine-ish, after all. Also adjusted centre of display, simultaneously adding some validation on that.
|
2016-06-14 07:29:35 -04:00 |
|
Thomas Harte
|
fcf4b14344
|
Extended to allow floating-point sampling rates. Which makes sense.
|
2016-06-13 19:30:41 -04:00 |
|
Thomas Harte
|
2992183aae
|
Switched to a lookup table for phase, temporarily in YUV colour space, probably. Working on it.
|
2016-06-12 14:39:17 -04:00 |
|
Thomas Harte
|
68a8851c52
|
Increased parallelism, allowing a simplification in the GL view.
|
2016-06-02 22:29:09 -04:00 |
|
Thomas Harte
|
1e0fcbbee8
|
Made a very basic stab at a couple of the tone generators, added straight-through path for the speaker when input rate exactly equals output rate.
|
2016-06-01 19:53:16 -04:00 |
|