140 Commits

Author	SHA1	Message	Date
Thomas Harte	e885438363	The penny has finally dropped that I can drive the CPU stuff in a manner completely decoupled from the GPU stuff. For much improved parallelisation.	2016-04-06 19:34:34 -04:00
Thomas Harte	4595741ab0	Made an attempt not to interrupt the display link queue too much when emulation is running slowly.	2016-04-04 20:22:33 -04:00
Thomas Harte	3038704977	Attempted to introduce a lowpass filter to the graphics output, reverted 6502 optimisations as seemingly not working.	2016-03-21 22:01:25 -04:00
Thomas Harte	5966ac845f	Switched symbols and updated all-RAM 6502 in order to fix unit test target.	2016-03-20 22:48:56 -04:00
Thomas Harte	902017a962	Fixes: drop any processing backlog, try not to allow an Electron document to close mid-draw, perform a frame grab even if the emulated machine is over-processing, really really don't create a CRT until it's safe.	2016-03-20 18:42:37 -04:00
Thomas Harte	fb6fb5d948	Switched to two-phase setup to deal with OpenGL scheduling.	2016-03-20 13:50:13 -04:00
Thomas Harte	eabc382540	Fixed: of course I can't rely on the pointer to CVTimeStamp not becoming dangling during a queue jump.	2016-03-19 23:02:42 -04:00
Thomas Harte	4c5d66c317	Made sure GL context isn't activated until it's locked.	2016-03-19 22:54:56 -04:00
Thomas Harte	a546277f88	Added the simplest mechanism to decouple emulation from the display link queue.	2016-03-19 22:53:37 -04:00
Thomas Harte	9da7716c72	Attempted to simplify threading, thereby allowing machines to be constructed within a valid GL context, and started adding appropriate GL syncs. Which all oddly drops everything to a negligible FPS. Investigation will follow.	2016-03-19 22:46:17 -04:00
Thomas Harte	1c4acfb599	I think this is a prima facie acceptable implementation of the fast tape hack.	2016-03-13 17:39:53 -04:00
Thomas Harte	bb0cd89574	Got explicit about threading guarantees.	2016-03-13 13:38:03 -04:00
Thomas Harte	cfa616d593	Fixed: timing issue versus supplied test ROM was failure to include the Plus 1 ROM in the mix.	2016-03-12 11:51:20 -05:00
Thomas Harte	1e5fe2b2c1	Made an attempt to reestablish the Atari 2600 output connection despite various changes (TODO: generalise that stuff), and to start creating the composite shader.	2016-03-07 21:04:04 -05:00
Thomas Harte	41c09f8c3f	Renamed CSCathodeRayView to CSOpenGLView as it no longer has any CRT-related responsibilities. It just does the GL and manages a serial dispatch queue.	2016-03-05 14:45:09 -05:00
Thomas Harte	95efeb1d56	Ensured all delegate and responder delegate messages occur on the same queue.	2016-03-05 14:35:47 -05:00
Thomas Harte	c754a6e45a	Decoupled execution speed and frame rate; cleaned up.	2016-03-03 22:12:31 -05:00
Thomas Harte	60d35fa72b	Requested multisampling, if available, rather than supersampling.	2016-02-27 22:46:31 -05:00
Thomas Harte	c7f54d649e	Switched back down to two samples per pixel. Though one might do it. Need to investigate.	2016-02-18 23:21:25 -05:00
Thomas Harte	3ea0d04a1a	-dealloc now blocks until all audio queue buffers are no longer playing.	2016-02-16 21:47:23 -05:00
Thomas Harte	bbffbb5dc2	Resolved deadlock if an invalidate call was sent to the Electron while it was in the middle of an update.	2016-02-16 20:35:45 -05:00
Thomas Harte	a01f90ff3e	Attempted a switch to the real PAL visible area and to something a bit like a real phosphor decay.	2016-02-14 21:57:23 -05:00
Thomas Harte	7580d192d5	Fixes: now setting correct frame time estimate, properly enabling the timestamp attribute, and ensuring that the Electron flushes screen work at least once per host frame update.	2016-02-14 19:28:02 -05:00
Thomas Harte	7bc5a43c36	Fixed type warning.	2016-02-12 22:30:22 -05:00
Thomas Harte	0527888b15	Endeavoured to ensure safe shutdown.	2016-02-12 22:30:06 -05:00
Thomas Harte	b5bcadb8d3	Reinstated clipped CRT output, with more appropriate ownership of the decision.	2016-02-07 22:18:55 -05:00
Thomas Harte	d3d505b7bc	That's one header file less.	2016-02-05 23:05:58 -05:00
Thomas Harte	6ab425deda	There is now a semi-reasonable amount of screen output again.	2016-02-05 21:35:39 -05:00
Thomas Harte	80e7e5e602	Updated to return old behaviour of drawing only upon changes.	2016-02-04 23:05:47 -05:00
Thomas Harte	8bc3f8046d	This endeavours to move everything into the CRT class except the final version of shader building.	2016-02-04 22:57:46 -05:00
Thomas Harte	e0d51408e4	Onward with carrying this through to the bitter end, this at least results in all the appropriate knowledge and call-ins occuring at the CRT.	2016-02-04 22:28:50 -05:00
Thomas Harte	4554abb755	Made an attempt to be more rigorous in display generation on the Electron, to make sure I deal with mid-line changes to/from blank line mode. Even if it turns out that they generate pixels.	2016-01-29 21:14:13 -05:00
Thomas Harte	0efe4b312c	Disabled my various bits of rate interchange debugging; improved test for when to call update_display due to a RAM write.	2016-01-21 22:16:52 -05:00
Thomas Harte	de7218cdf0	Added a lot of commenting to the CPU6502 definition, simplifying its construction. Added missing nullability modifier to CSElectron. Fixed bad-habit Objective-C style naming on the Electron's Interrupt enum.	2016-01-20 21:55:38 -05:00
Thomas Harte	f727582911	Started making first moves towards stripping CSCathodeRayView of its responsibilities. If that can be merely an OpenGL view that presents things, things will be a lot more portable.	2016-01-20 08:21:33 -05:00
Thomas Harte	e65cd4cf06	Some data is marginally reaching the CPU from the tape.	2016-01-19 22:05:34 -05:00
Thomas Harte	956b90e203	Attempted further to improve latency; added view adjustment for non-4:3 output aspect ratios. The 4:3 is currently hardcoded, so further work will be required.	2016-01-18 23:55:52 -05:00
Thomas Harte	90eef1df74	Tightened to provide lower latency audio, hopefully.	2016-01-18 20:01:06 -06:00
Thomas Harte	03f683d588	Gave the audio queue something a lot like a spin lock on waiting to pipe out audio.	2016-01-18 19:57:18 -06:00
Thomas Harte	5a39e42413	Wired up enough such that some basic attempt at parsing a UEF occurs.`	2016-01-18 17:06:09 -06:00
Thomas Harte	2779f0e569	Statred working on support for at least the most fundamental file format.	2016-01-18 15:46:41 -06:00
Thomas Harte	b70fdc2de8	Switched to being explicitly careful about not wrapping around and stomping on data not yet output.	2016-01-18 13:56:20 -06:00
Thomas Harte	ddcc34740b	Added lots of debugging output while I attempt to locate the source of audio scratchiness, also simplified manner of dealing with wraparound within the AudioQueue wrapper.	2016-01-18 13:50:19 -06:00
Thomas Harte	781249acf7	Fixed crash.	2016-01-14 20:35:36 -05:00
Thomas Harte	38ffcaa262	Here, at last, is _some_ audio output, at least.	2016-01-14 20:33:22 -05:00
Thomas Harte	afde8dac49	Closed the loop such that audio manages to bubble up into Objective-C.	2016-01-13 22:38:59 -05:00
Thomas Harte	d9a7ef9e46	Edging towards audio output; the speaker is given appropriate input and output rates, and then updated with current divider and enabled/disabled status.	2016-01-13 21:03:43 -05:00
Thomas Harte	d28abdc037	Made an attempt at correct timing, adding support for additional paged ROMs, added file association for .rom.	2016-01-12 22:34:26 -05:00
Thomas Harte	3437781abd	Started sketching out an interface for sound generation. Which made me realise that the CRT in CRTDelegate was redundant, since C++ has namespaces.	2016-01-12 16:54:09 -05:00
Thomas Harte	6112f4ef6b	Withdrew soft filtering for now; until the sampling frequency is passed on it's not sufficiently rigorous.	2016-01-12 16:42:16 -05:00