Thomas Harte
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218b976dbc
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Adds through route for setting a texture bookender, and exploits it from the Electron.
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2017-10-23 18:35:37 -04:00 |
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Thomas Harte
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513903890e
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Corrects definition of Bookender and provides the default implementation.
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2017-10-22 17:24:41 -04:00 |
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Thomas Harte
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1157bde453
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Sketches interface for a GPU data bookender, to avoid stray errors with packed pixel formats.
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2017-10-22 10:48:10 -04:00 |
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Thomas Harte
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ad9df4bb90
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Commutes uint8_t *, uint16_t *, uint32_t *, size_t, off_t and long to functional-style casts.
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2017-10-21 22:30:15 -04:00 |
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Thomas Harte
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e983854e71
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Converts all uint8_t and uint16_t casts to the functional style.
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2017-10-21 21:50:53 -04:00 |
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Thomas Harte
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ec999446e8
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Commutes int and unsigned casts to the functional style.
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2017-10-21 21:00:40 -04:00 |
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Thomas Harte
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5e3e91373a
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Switches all unsigned int and double casts to functional style.
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2017-10-21 19:49:04 -04:00 |
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Thomas Harte
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b5b6219cb7
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Slightly simplifies TextureBuilder arithmetic.
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2017-10-19 22:02:00 -04:00 |
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Thomas Harte
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ba5f668338
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Ensured full CRT instance initialisation.
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2017-10-17 22:34:10 -04:00 |
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Thomas Harte
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ce78d9d12c
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Introduces buffer alignment when writing to textures.
To avoid cross-boundary writes and hopefully to eke out a little better performance.
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2017-10-17 22:09:48 -04:00 |
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Thomas Harte
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edbc60a3fb
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Various undefined behaviour fixes.
Primarily around uninitialised variables, but also with an attempted use of a negative pointer.
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2017-10-17 21:29:19 -04:00 |
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Thomas Harte
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c6e6c3fcfb
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Resolves all current analyser warnings.
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2017-08-24 22:18:44 -04:00 |
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Thomas Harte
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2d81acb82e
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Upped C++ standard to C++14 and added an #if that's intended to use the built-in std::gcd when compiled on C++17 or better. Fixed for new signedness warnings resulting for taking the step to C++14.
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2017-08-11 19:18:45 -04:00 |
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Thomas Harte
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62eadbb51a
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Adjusted gamma ratio to be the correct way around. The PAL midrange should be slightly darker now.
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2017-08-10 15:36:27 -04:00 |
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Thomas Harte
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ad8c8166bc
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Built in gamma conversion for all machines, assuming an output of 2.8 for PAL, 2.2 for NTSC.
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2017-08-10 15:17:08 -04:00 |
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Thomas Harte
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55fd9122d0
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Slightly relaxed vertical sync testing.
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2017-07-30 21:19:42 -04:00 |
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Thomas Harte
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0bf4fdc9af
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Simplified slightly.
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2017-07-29 21:37:59 -04:00 |
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Thomas Harte
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ed8c73eb14
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Ensured lengthy constant sync can't appear to be two sync pulses, regardless of other interruption.
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2017-07-29 18:25:04 -04:00 |
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Thomas Harte
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3528a7f78b
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Made an attempt at triggering vertical sync the expected number of time after it begins, regardless of total length.
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2017-07-29 17:33:52 -04:00 |
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Thomas Harte
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54bcc40192
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With an eye towards being more accurate as to vertical sync recognition: acknowledged that the detection period varies between PAL and NTSC.
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2017-07-29 14:53:53 -04:00 |
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Thomas Harte
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be750ee427
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Eliminated all dangling implicit signedness conversions.
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2017-07-21 21:52:37 -04:00 |
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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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5b4c5b0cbf
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Avoided having two different variables named next_output_run.
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2017-07-21 20:46:08 -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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12f7e1b804
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Enshrined a default colour burst amplitude. Which now everybody relies on. The 102 figure is derived from the burst apparently being 40 IRE.
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2017-07-07 23:35:14 -04:00 |
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Thomas Harte
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c7fa2ed11a
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It makes more sense not to retain the previous texture builder run until vertex storage is confirmed.
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2017-07-07 23:21:25 -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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ab1374f801
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Added an assert on an assumed buffer size alignment.
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2017-07-06 21:46:24 -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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a5075d9eb5
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Formalised the reasoning behind the colour phase fix-up and made it an opt-in per-caller value. Only the Oric currently needs to opt in.
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2017-05-16 20:31:39 -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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e63229a5e5
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Pulled vertical sync detection entirely outside the loop, and gave it greater perspective.
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2017-03-06 19:15:33 -05:00 |
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Thomas Harte
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ad73379d1c
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Took vertical sync detection logic entirely out of the loop.
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2017-03-05 20:17:55 -05:00 |
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Thomas Harte
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4751615623
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Fixed NTSC colour cycle count, and hence the 2600's reported line lengths and phase offset.
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2017-03-04 17:31:39 -05:00 |
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Thomas Harte
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a3fcd15980
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Loosened sync charge level requirement.
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2017-03-01 22:16:56 -05:00 |
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Thomas Harte
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d19f26887d
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Performed a very naive shuffling of output builder sets onto the OpenGL queue. Which makes the frequency switcher work properly from it's possibly-contextless thread.
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2017-02-20 10:39:31 -05:00 |
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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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d979a822ac
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Introduced a deferred task list for the OpenGL thread.
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2017-02-19 21:46:07 -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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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
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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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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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