Thomas Harte
283ed8dbae
Increases permissible error in scanline length.
2018-06-19 22:24:11 -04:00
Thomas Harte
0c65385c82
Undoes older interpretation of alternating phase.
...
I now understand, hopefully, that it's only the phase of the second colour component that alternates. That has the pointwise effect of reversing the colour signal. Hence the effect of phase errors cancelling themselves out up on successive lines up to a point.
2018-06-14 18:24:32 -04:00
Thomas Harte
35e84ff1a8
Corrects NTSC quadrature phase.
2018-05-31 21:40:46 -04:00
Thomas Harte
7226d8d4f7
Eliminates all instances of µ.
2018-05-13 15:46:14 -04:00
Thomas Harte
0b771ce61a
Removes all instances of the copyright symbol.
2018-05-13 15:19:52 -04:00
Thomas Harte
1c605d58e3
Removes the CRT requirement for an integral relationship between cycles and samples.
2018-04-16 20:00:56 -04:00
Thomas Harte
705d53cc21
Picks a phase for the TMS empirically.
2018-03-03 13:53:00 -05:00
Thomas Harte
9cbd61e709
Replaces CRT quantity assert with test.
...
Primarily to handle television/composite target switches that can unsync the buffers.
2018-01-15 18:37:09 -05:00
Thomas Harte
5aef81cf24
Commutes cross-platform #pragma marks to //MARK:s.
2017-11-12 15:59:11 -05:00
Thomas Harte
2e15fab651
Doubles down on <cX> over <X.h> for C includes, and usage of the namespace for those types and functions.
2017-11-11 15:28:40 -05:00
Thomas Harte
c0055a5a5f
Further builds up SConstruct, correcting many missed imports and a couple of improper uses of C99 in C++ code.
2017-11-09 22:04:49 -05:00
Thomas Harte
ad9df4bb90
Commutes uint8_t *, uint16_t *, uint32_t *, size_t, off_t and long to functional-style casts.
2017-10-21 22:30:15 -04:00
Thomas Harte
e983854e71
Converts all uint8_t and uint16_t casts to the functional style.
2017-10-21 21:50:53 -04:00
Thomas Harte
ec999446e8
Commutes int and unsigned casts to the functional style.
2017-10-21 21:00:40 -04:00
Thomas Harte
5e3e91373a
Switches all unsigned int and double casts to functional style.
2017-10-21 19:49:04 -04:00
Thomas Harte
ba5f668338
Ensured full CRT instance initialisation.
2017-10-17 22:34:10 -04:00
Thomas Harte
62eadbb51a
Adjusted gamma ratio to be the correct way around. The PAL midrange should be slightly darker now.
2017-08-10 15:36:27 -04:00
Thomas Harte
ad8c8166bc
Built in gamma conversion for all machines, assuming an output of 2.8 for PAL, 2.2 for NTSC.
2017-08-10 15:17:08 -04:00
Thomas Harte
55fd9122d0
Slightly relaxed vertical sync testing.
2017-07-30 21:19:42 -04:00
Thomas Harte
0bf4fdc9af
Simplified slightly.
2017-07-29 21:37:59 -04:00
Thomas Harte
ed8c73eb14
Ensured lengthy constant sync can't appear to be two sync pulses, regardless of other interruption.
2017-07-29 18:25:04 -04:00
Thomas Harte
3528a7f78b
Made an attempt at triggering vertical sync the expected number of time after it begins, regardless of total length.
2017-07-29 17:33:52 -04:00
Thomas Harte
54bcc40192
With an eye towards being more accurate as to vertical sync recognition: acknowledged that the detection period varies between PAL and NTSC.
2017-07-29 14:53:53 -04:00
Thomas Harte
be750ee427
Eliminated all dangling implicit signedness conversions.
2017-07-21 21:52:37 -04:00
Thomas Harte
5b4c5b0cbf
Avoided having two different variables named next_output_run.
2017-07-21 20:46:08 -04:00
Thomas Harte
8ccec37a4b
Eliminated a further potential cause of texture/geometry mismatch: the texture retain succeeded but then there wasn't room for geometry.
2017-07-09 19:11:38 -04:00
Thomas Harte
ee1a9a4781
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
2017-07-09 17:50:22 -04:00
Thomas Harte
12f7e1b804
Enshrined a default colour burst amplitude. Which now everybody relies on. The 102 figure is derived from the burst apparently being 40 IRE.
2017-07-07 23:35:14 -04:00
Thomas Harte
c7fa2ed11a
It makes more sense not to retain the previous texture builder run until vertex storage is confirmed.
2017-07-07 23:21:25 -04:00
Thomas Harte
bfbe12b94b
Made an attempt further to tie geometry and texture generation fully together, removing the assumption that the caller will achieve one-to-one calling.
2017-07-07 22:25:05 -04:00
Thomas Harte
ab1374f801
Added an assert on an assumed buffer size alignment.
2017-07-06 21:46:24 -04:00
Thomas Harte
4211389ac7
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.
2017-07-06 21:29:08 -04:00
Thomas Harte
a5075d9eb5
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.
2017-05-16 20:31:39 -04:00
Thomas Harte
e01f3f06c8
Completed curly bracket movement.
2017-03-26 14:34:47 -04:00
Thomas Harte
e63229a5e5
Pulled vertical sync detection entirely outside the loop, and gave it greater perspective.
2017-03-06 19:15:33 -05:00
Thomas Harte
ad73379d1c
Took vertical sync detection logic entirely out of the loop.
2017-03-05 20:17:55 -05:00
Thomas Harte
4751615623
Fixed NTSC colour cycle count, and hence the 2600's reported line lengths and phase offset.
2017-03-04 17:31:39 -05:00
Thomas Harte
a3fcd15980
Loosened sync charge level requirement.
2017-03-01 22:16:56 -05:00
Thomas Harte
fcf8cafb5d
Sought to ensure that communicating a colour burst in multiple parts doesn't ruin the phase.
2017-02-06 18:27:44 -05:00
Thomas Harte
4d6e78e641
Reinstated temporary Oric-related fix.
2017-01-24 22:16:15 -05:00
Thomas Harte
d0a93409e6
Made an attempt to simplify in-shader phase calculation, now that output position is a direct multiple of phase.
2017-01-11 08:18:00 -05:00
Thomas Harte
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.
2017-01-10 22:08:07 -05:00
Thomas Harte
d2a7d39749
Ensured the output lock isn't held while talking to the delegate.
2017-01-08 19:49:21 -05:00
Thomas Harte
5740015f56
Temporarily disabled composite processing to show the pure stream. Fixed both automatic calculations of phase — per line and, at input, per pixel.
2017-01-07 12:38:00 -05:00
Thomas Harte
c84004bfa3
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.
2017-01-06 21:36:19 -05:00
Thomas Harte
a549fd1ecc
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.
2016-12-10 13:42:34 -05:00
Thomas Harte
5216dda675
Added some brief extra exposition to the texture builder, cut all internal tex_x/y and source_divider stuff from the CRT.
2016-12-06 19:08:55 -05:00
Thomas Harte
4ff33254e1
Sought to shift locking back up to the CRT. And to be a bit more RAII-ish.
2016-12-06 18:48:30 -05:00
Thomas Harte
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.
2016-12-06 07:24:07 -05:00
Thomas Harte
0edc043378
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.
2016-12-03 20:47:19 -05:00
