356 Commits

Author	SHA1	Message	Date
Thomas Harte	2e12370251	Resolves some of the dangling C-isms remaining in my FIR filter, and introduces filter composition.	2017-11-11 12:30:45 -05:00
Thomas Harte	cb0f58ab7a	Corrects order-of-initialisation errors in the CPC (again), TextureBuilder, TextureTarget, Z80, MFM parser and binary tape player.	2017-11-10 22:57:03 -05:00
Thomas Harte	fabaf4e607	Adds missing include files, corrects bad include paths and eliminates the Clang-specific __undefined.	2017-11-10 21:56:53 -05:00
Thomas Harte	cb015c83e1	Eliminated C99-style struct initialisations.	2017-11-10 19:14:19 -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	c45d4831ec	Introduces an SConstruct file and corrects those errors and warnings that arise in Ubuntu.	2017-11-08 22:36:41 -05:00
Thomas Harte	6e1d69581c	Eliminates a variety of end-of-line spaces.	2017-11-07 22:54:22 -05:00
Thomas Harte	218b976dbc	Adds through route for setting a texture bookender, and exploits it from the Electron.	2017-10-23 18:35:37 -04:00
Thomas Harte	513903890e	Corrects definition of Bookender and provides the default implementation.	2017-10-22 17:24:41 -04:00
Thomas Harte	1157bde453	Sketches interface for a GPU data bookender, to avoid stray errors with packed pixel formats.	2017-10-22 10:48:10 -04:00
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	b5b6219cb7	Slightly simplifies TextureBuilder arithmetic.	2017-10-19 22:02:00 -04:00
Thomas Harte	ba5f668338	Ensured full CRT instance initialisation.	2017-10-17 22:34:10 -04:00
Thomas Harte	ce78d9d12c	Introduces buffer alignment when writing to textures. ... To avoid cross-boundary writes and hopefully to eke out a little better performance.	2017-10-17 22:09:48 -04:00
Thomas Harte	edbc60a3fb	Various undefined behaviour fixes. ... Primarily around uninitialised variables, but also with an attempted use of a negative pointer.	2017-10-17 21:29:19 -04:00
Thomas Harte	c6e6c3fcfb	Resolves all current analyser warnings.	2017-08-24 22:18:44 -04:00
Thomas Harte	2d81acb82e	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.	2017-08-11 19:18:45 -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	449c33ee8b	Signedness fixes.	2017-07-21 21:28:04 -04:00
Thomas Harte	ef03c84b21	More definitively removed the old sample-offset blending approach to filtering.	2017-07-21 20:58:55 -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	a25c2fd6b5	Got more explicit about what the thinking is here re: multiple sources of action.	2017-07-09 17:54:26 -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	2f90f35478	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.	2017-07-07 23:37:44 -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	344d267fd2	Introduced sharper chrominance for genuinely black-and-white signals.	2017-07-06 21:38:33 -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	c6d00ec7d1	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).	2017-07-06 21:25:38 -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	c2b5a9bb1f	Minor fix: given that phase is now a function of position, stop nudging position.	2017-05-13 21:50:48 -04:00
Thomas Harte	b14c892740	Switched to a safer RAII approach to this lock.	2017-05-10 21:29:39 -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