123 Commits

Author	SHA1	Message	Date
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
Thomas Harte	cb3c837e30	Simplified interface by baking in last-minute-only updates.	2016-12-03 18:19:12 -05:00
Thomas Harte	5bc165960a	Completed refactoring.	2016-11-20 09:12:06 +08:00
Thomas Harte	aca1fa0577	Returned some video output. Enough significantly to reduce my paranoia.	2016-11-17 13:37:53 +08:00
Thomas Harte	1f91d29434	Progressed to usage of an array builder and a texture builder up to the point of a successful build.	2016-11-17 12:26:04 +08:00
Thomas Harte	0f3b02edb7	Switched to postfix underscores and gave this class ownership of a texture builder and an array builder, though it presently uses neither.	2016-11-17 11:00:11 +08:00