Thomas Harte
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449c33ee8b
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Signedness fixes.
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2017-07-21 21:28:04 -04:00 |
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Thomas Harte
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ef03c84b21
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More definitively removed the old sample-offset blending approach to filtering.
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2017-07-21 20:58:55 -04:00 |
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Thomas Harte
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8ccec37a4b
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Eliminated a further potential cause of texture/geometry mismatch: the texture retain succeeded but then there wasn't room for geometry.
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2017-07-09 19:11:38 -04:00 |
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Thomas Harte
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a25c2fd6b5
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Got more explicit about what the thinking is here re: multiple sources of action.
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2017-07-09 17:54:26 -04:00 |
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Thomas Harte
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ee1a9a4781
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Eliminates attempts cleverly to shuffle unsubmitted runs, because no mechanism exists to stop them overwriting previously-submitted-but-not-yet-flushed runs. Which implies that the buffer must be fully circular. The cost of which is sometimes having to make two calls to glTexSubImage2D. Also added some TODOs, and a means for reporting when a retain_latest is ineffective, in which situation it would be inappropriate to attempt to generate correlated geometry
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2017-07-09 17:50:22 -04:00 |
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Thomas Harte
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2f90f35478
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Ensured the same write area can be submitted multiple times — this is actively used if a run of data overlaps a flywheel-suggested sync. Which nullifies the idea of not having a write area in the barrel, at least as soon as any one has been allocated.
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2017-07-07 23:37:44 -04:00 |
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Thomas Harte
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bfbe12b94b
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Made an attempt further to tie geometry and texture generation fully together, removing the assumption that the caller will achieve one-to-one calling.
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2017-07-07 22:25:05 -04:00 |
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Thomas Harte
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344d267fd2
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Introduced sharper chrominance for genuinely black-and-white signals.
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2017-07-06 21:38:33 -04:00 |
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Thomas Harte
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4211389ac7
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Connected machine-supplied colour burst amplitude to shader, discarding hard-coded value. Net effect: the colour component is now discarded for the ZX80 and 81.
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2017-07-06 21:29:08 -04:00 |
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Thomas Harte
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c6d00ec7d1
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Switched phase and amplitude varying to a 3d vector; the third component is 1/amplitude if amplitude is non-zero, and zero otherwise. So you can multiply by that to get chrominance, rather than dividing by amplitude. With the direct effect that detected chrominance should automatically be zero if the colour burst didn't exist (i.e. had zero amplitude).
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2017-07-06 21:25:38 -04:00 |
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Thomas Harte
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c2b5a9bb1f
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Minor fix: given that phase is now a function of position, stop nudging position.
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2017-05-13 21:50:48 -04:00 |
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Thomas Harte
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b14c892740
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Switched to a safer RAII approach to this lock.
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2017-05-10 21:29:39 -04:00 |
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Thomas Harte
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e01f3f06c8
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Completed curly bracket movement.
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2017-03-26 14:34:47 -04:00 |
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Thomas Harte
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6cb95b4fc5
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Switched to passing around std::strings rather than char *s, because they should be easier to capture.
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2017-02-20 10:35:33 -05:00 |
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Thomas Harte
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fccdce65b9
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Switched to lock guards.
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2017-02-19 21:45:28 -05:00 |
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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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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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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
|
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
|
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
|
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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9521718120
|
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
|
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
|
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
|
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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c746a3711f
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Temporarily disabled my attempt to be clever with bilinear filtering when applying a lowpass filter. Will need to investigate.
|
2017-01-04 08:06:18 -05:00 |
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Thomas Harte
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aa7774a9a6
|
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
|
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
|
Decreased Y resolution, again also hopefully temporarily.
|
2016-12-10 15:35:38 -05:00 |
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Thomas Harte
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81a102d951
|
Upped intermediate buffer size, at least temporarily, while I look for the source of the interference patterns I'm seeing.
|
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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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
|
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
|
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
|
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
|
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
|
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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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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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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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
|
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
|
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
|
Attempted to reduce allocations.
|
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
|
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
|
Removed dead code.
|
2016-11-16 11:57:22 +08:00 |
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Thomas Harte
|
9ee11d7765
|
At the expense of API simplicity, at least for now, resolved the most glaring cause of dirty lines.
|
2016-11-16 11:34:05 +08:00 |
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Thomas Harte
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44d3fd6d5b
|
Fixed mistimed reset of the target output line. Now all that's left is occasional noise.
|
2016-11-16 11:22:12 +08:00 |
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Thomas Harte
|
7a737e0790
|
Both pathways start with a buffer that clears to black. So no need to keep going on about it.
|
2016-11-16 11:12:08 +08:00 |
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Thomas Harte
|
f63e849092
|
Sought completely to eliminate the outgoing concept of 'clearing zones'.
|
2016-11-16 11:10:34 +08:00 |
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Thomas Harte
|
294adde344
|
Eliminated zoned clearing, in favour of a complete buffer clear on each load and attempted to reduce locking. But imperfectly.
|
2016-11-16 10:59:12 +08:00 |
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Thomas Harte
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ccedb6bea6
|
Introduced an intermediate buffer that collects lines before flushing them to the output buffer.
|
2016-11-16 10:49:18 +08:00 |
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Thomas Harte
|
ba2adf8bb1
|
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.
|
2016-11-16 10:34:54 +08:00 |
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Thomas Harte
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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
|
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 |
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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 |
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Thomas Harte
|
2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr.
|
2016-06-23 20:52:44 -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 |
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Thomas Harte
|
68a8851c52
|
Increased parallelism, allowing a simplification in the GL view.
|
2016-06-02 22:29:09 -04:00 |
|
Thomas Harte
|
4ad074fc78
|
Introduced a four-cycle delay between playfield fetch and display, curing Yar's Revenge. Also disabled barrel roll scanling colouring again. I really need to make my mind up on that.
|
2016-05-16 19:55:56 -04:00 |
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Thomas Harte
|
9d92ad659f
|
Established the basic timing loop, albeit without clocking delays yet.
|
2016-05-16 08:01:29 -04:00 |
|
Thomas Harte
|
00a2b42080
|
Made thread-safe.
|
2016-05-15 15:19:52 -04:00 |
|
Thomas Harte
|
091516e3cb
|
The semantics might need better exposition but: fixed UniformXfv calls plus matrix calls, documented new semantics on all setters.
|
2016-05-15 14:59:59 -04:00 |
|
Thomas Harte
|
328fabcd10
|
Ensured values aren't dangling pointers.
|
2016-05-14 18:15:10 -04:00 |
|
Thomas Harte
|
492dc7ccbf
|
Made an attempt to queue uniform changes until the next call to bind. That's to allow usage from other threads.
|
2016-05-14 18:06:55 -04:00 |
|
Thomas Harte
|
30f335fa35
|
Switched pervasively to using the named slot uniform setters on Shader.
|
2016-05-13 22:08:32 -04:00 |
|
Thomas Harte
|
8d52765f40
|
Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
|
2016-05-12 22:22:24 -04:00 |
|
Thomas Harte
|
6d65bc9b3a
|
Permitted a wider error window on vertical sync, tidied things up a little and started trying to move towards full implementation of the OpenGL contract.
|
2016-05-11 22:11:01 -04:00 |
|
Thomas Harte
|
4b3c4082d2
|
These functions appear correctly to model the NTSC and PAL palettes; the CRT's attempt to switch function doesn't work properly yet though.
|
2016-05-11 21:07:18 -04:00 |
|
Thomas Harte
|
a8ce021136
|
Fixed comment.
|
2016-05-10 19:59:03 -04:00 |
|