Thomas Harte
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9b64f64db7
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Attempted to normalise some style decisions.`
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2016-04-24 22:32:24 -04:00 |
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Thomas Harte
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884755c560
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Ensured the GL context is available when switching Atari 2600 output, and that it locks the output.
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2016-04-24 20:56:21 -04:00 |
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Thomas Harte
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2bd6566768
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Oh, of course, I can use GL_CONSTANT_ALPHA so that new colours can be painted at alpha 1.0 while possibly saturating with old colours.
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2016-04-24 20:47:24 -04:00 |
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Thomas Harte
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d221c712b0
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Ensured GL context is active when destructing CRTOpenGL.
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2016-04-24 20:34:25 -04:00 |
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Thomas Harte
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acab22d95a
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Removed any improper talk of YUV. Switched to (cos, -sin) formulation of the quadrature vector, which I now believe to be correct.
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2016-04-24 20:27:03 -04:00 |
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Thomas Harte
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d393776677
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Fixed an incorrect sign.
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2016-04-24 19:29:30 -04:00 |
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Thomas Harte
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9b2b7a09eb
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Ensured that colour space changes take effect.
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2016-04-24 19:16:23 -04:00 |
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Thomas Harte
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929cfc49cb
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Extended window for picking output frequency, attempted to consolidate CRT OpenGL timing uniforms for approprate resetting.
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2016-04-24 18:58:31 -04:00 |
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Thomas Harte
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082003ed0a
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Reintroduced the CRT delegate and the 2600's automatic region switching. Albeit that the CRT itself doesn't adjust properly to new timings yet.
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2016-04-24 18:36:22 -04:00 |
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Thomas Harte
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d0f9a6c2f5
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Added a dump-the-input default RGB output shader. Which at least proves that the Atari 2600 is generally still working.
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2016-04-24 17:35:25 -04:00 |
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Thomas Harte
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775fc270e6
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Fixed bug whereby first frame drawn has random collection of data.
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2016-04-24 07:00:22 -04:00 |
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Thomas Harte
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80a3169674
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Started reviving the Atari 2600 emulation. Put new startup sequence into place.
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2016-04-24 06:56:08 -04:00 |
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Thomas Harte
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bdaf4cee43
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Switched to an in-framebuffer approach to phosphor decay, which might be acceptable now that every single pixel is being painted, re-emphasises luminance and stretched sampling period for the two FIR filters as well as decreasing the amount of signal that is retained, subjectively to improve output.
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2016-04-24 06:16:41 -04:00 |
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Thomas Harte
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c123f3bf74
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Fixed run extension, temporarily forced colour amplitude.
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2016-04-23 14:16:49 -04:00 |
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Thomas Harte
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a4889074b8
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Moved final colour space conversion out of the innermost loop.
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2016-04-22 21:29:27 -04:00 |
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Thomas Harte
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8ff1f82008
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Fixed accidental channel duplication.
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2016-04-22 19:18:28 -04:00 |
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Thomas Harte
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95639f1189
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Made attempt to introduce final filtering stage and output.
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2016-04-22 19:15:59 -04:00 |
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Thomas Harte
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23311d633b
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Doubled phosphor life, added comment on required final stage fix for tomorrow.
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2016-04-21 23:15:48 -04:00 |
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Thomas Harte
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59c07f7ddd
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This, at least, is an attempt to decode chrominance, as yet unfiltered, and not commuted to RGB (and possibly packed incorrectly).
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2016-04-21 23:01:54 -04:00 |
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Thomas Harte
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cc7bf97a9c
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This now attempts to filter y.
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2016-04-21 22:32:30 -04:00 |
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Thomas Harte
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e7ed1224a5
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Introduced the second filtering stage, albeit that it presently does nothing whatsoever.
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2016-04-21 21:32:36 -04:00 |
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Thomas Harte
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23ce032ba1
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Started edging towards the necessary flexibility for the other two intermediate shaders.
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2016-04-21 20:21:34 -04:00 |
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Thomas Harte
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4b9985626d
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Started commuting alpha to direction. The incoming amplitude is now honoured.
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2016-04-21 19:53:41 -04:00 |
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Thomas Harte
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638b08302b
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The initial composite buffer is now genuinely a composite signal.
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2016-04-21 19:37:32 -04:00 |
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Thomas Harte
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d9a9dffe63
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Factored out wraparound buffer addressing where it's otherwise going to get really repetitive; need to look at using the same approach for the glTexSubImage2D step at least but that probably means properly encapsulating the buffer builder's state.
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2016-04-20 21:05:32 -04:00 |
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Thomas Harte
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8232ed765e
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Eliminated use of zero-alpha runs to clear new lines in the intermediate buffer in favour of a scissored glClear. It's just an easier way to scale the current approach to three intermediate buffers.
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2016-04-20 20:44:25 -04:00 |
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Thomas Harte
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e2da77fb8b
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Clarified constants, ensured monitor mode works from startup.
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2016-04-19 22:53:39 -04:00 |
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Thomas Harte
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ef83595af3
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Fixed: issue was (i) always thinking the entire source run buffer needed to be issued; and (ii) having fixed that, always thinking that the block that needs redrawing doesn't overflow the buffer. Fixed both. 'Television' mode is now working without explicit synchronisation (and with a lot less work).
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2016-04-19 22:38:11 -04:00 |
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Thomas Harte
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3d7a3ce995
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Eliminated some redundant texture binds.
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2016-04-19 22:30:05 -04:00 |
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Thomas Harte
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145c0b3b71
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Smoothed output device changes, killing some dead state. Added an explicit glFinish to suggest that the problem is synchronisation rather than any sort of data or shader error.
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2016-04-19 22:21:26 -04:00 |
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Thomas Harte
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66f2c10c04
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Resolved potential crash if tape requests are made without one inserted. Softened glFinish to glFlush, though I'm still not sure I should strictly need even that.
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2016-04-19 21:00:48 -04:00 |
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Thomas Harte
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88e237b8de
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Standardised indentation and added one extra piece of documentation.
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2016-04-19 20:53:55 -04:00 |
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Thomas Harte
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20aa9e291d
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Attempted to deal with the precision issues causing 'television' output currently to differ from 'monitor' output. Documented TextureTarget while I'm here.
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2016-04-19 20:51:34 -04:00 |
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Thomas Harte
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6f52ed14d6
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Trivially fixed. Appears to confirm an off-by-one error in the television implementation. Which would explain one of the visual phenomena — a repeating corrupted line.
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2016-04-19 19:32:52 -04:00 |
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Thomas Harte
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b90a487a16
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Attempted to enable both monitor and television output paths in the same codebase. The television route seems to be broken. Investigation required.
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2016-04-19 19:30:50 -04:00 |
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Thomas Harte
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6c9bcfa637
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Got rigorous on exceptions, started working towards having a working 'composite' shader at the same time as having a working RGB shader.
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2016-04-19 08:05:43 -04:00 |
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Thomas Harte
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bcc784bda9
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Introduced an interface for specifying attribute bindings, taking the opportunity to document the interface and introduce exceptions.
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2016-04-19 07:23:15 -04:00 |
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Thomas Harte
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9d39c14752
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Nothing of substance different; main current mystery: why do old frames recur and why does other jumpiness occur? Do I need some explicit synchronistion?
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2016-04-18 22:18:03 -04:00 |
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Thomas Harte
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cf55a0c423
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Fixed: composite output y is now incremented upon the start of retrace, that causing it to have different values at either edge of scans.
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2016-04-18 21:49:45 -04:00 |
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Thomas Harte
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9580dde3ad
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Fixed left/right shuffling. Was simply failing to supply the integer version of coordinates.
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2016-04-18 21:40:23 -04:00 |
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Thomas Harte
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d5bac2f04f
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Spotted error was in texture target all along. This now gets as far as showing something a lot like the correct display, but precision is way off. Way off.
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2016-04-18 21:32:48 -04:00 |
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Thomas Harte
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bf29c8e2bf
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Fixed mismatch in television/monitor selection, ticked view for drawing concurrently, since it can, removed stray space.
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2016-04-18 19:01:15 -04:00 |
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Thomas Harte
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9ede284eb6
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Added blanking source runs, ensuring the rolling buffer is appropriately cleared.
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2016-04-17 20:34:52 -04:00 |
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Thomas Harte
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43cae267f9
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Shuffled further in an attempt to get as far as having static but incorrectly-interpreted pixel data on screen. It's not currently static. So work to do.
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2016-04-17 18:08:05 -04:00 |
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Thomas Harte
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a8fbd82a3d
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Made an attempt at correctly mapping to eye coordinates.
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2016-04-17 17:21:24 -04:00 |
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Thomas Harte
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ece51917fa
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Added first attempt at performing the first step of television output: mapping from source data to the first of the processing buffers. It's immediately obvious that my eye coordinates are off.
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2016-04-17 17:17:59 -04:00 |
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Thomas Harte
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abce0ed3c4
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Added setup of the source vertex array.
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2016-04-17 16:17:23 -04:00 |
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Thomas Harte
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6ff9ffba6c
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Switching temporarily to an attempt to draw input runs as if RGB: shader compiles, fixed a race condition on out-of-bounds accesses for the source buffer.
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2016-04-17 15:51:28 -04:00 |
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Thomas Harte
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104f44f27f
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Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.
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2016-04-14 22:20:47 -04:00 |
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Thomas Harte
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323f1a24db
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Introduced blackout period solution to vertical sync confusing horizontal sync. Need to find out whether it's accurate.
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2016-04-14 20:30:45 -04:00 |
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Thomas Harte
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026ce0255f
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Source runs are now captured, and that buffer appropriately reset.
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2016-04-13 22:20:13 -04:00 |
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Thomas Harte
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2ea02ed127
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A source array buffer is also now created, mapped, unmapped, etc.
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2016-04-13 22:14:18 -04:00 |
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Thomas Harte
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04d1b65c93
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Reinstated texture target creation, cut them down to merely RGB.
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2016-04-12 22:48:47 -04:00 |
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Thomas Harte
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4d889d9c7f
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Made an attempt slightly to simplify the fragment processor, at both ends.
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2016-04-12 22:35:11 -04:00 |
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Thomas Harte
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fe8b0ebc7e
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Tidied up a little, mostly bumping things out of just-in-time creation that I can just do well in advance.
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2016-04-12 22:31:13 -04:00 |
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Thomas Harte
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069ec2e889
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In search of the cause of performance issues again, excised the per-pixel sin until it can be further evaluated.
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2016-04-11 23:13:54 -04:00 |
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Thomas Harte
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bdb99ba92f
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Corrections back towards composite output: fixed misnamed constant, ensured the CRT doesn't write nonsense to the output buffer, ensured it grows three vertices at a time rather than six when desired. Net effect should be that the output stage is working again, with the input processing remaining to fill in.
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2016-04-10 22:56:52 -04:00 |
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Thomas Harte
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8701366277
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Switched horizontal sync detection back to differential, switched the Electron to an XOR-style sync output (believed to be accurate, but I need to check), fixed some latent issues around vertical sync detection.
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2016-04-10 21:34:40 -04:00 |
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Thomas Harte
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fc5530b513
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Realising I've managed to confuse input and output, started shift to 'source' for what 'input' was.
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2016-04-10 15:58:43 -04:00 |
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Thomas Harte
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6dbd20ffde
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Expanded interface to rgb_sample to eliminate its need to make assumptions about globals, used expanded interface to compact Electron data to two pixels per byte.
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2016-04-05 20:32:55 -04:00 |
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Thomas Harte
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c0cd1ed89e
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Made an attempt to consolidate timestamp bases to a single vector and hence to lump all geometry into one or two calls, with no repetitive setting of a uniform. I'm not sure the result is correct yet.
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2016-04-04 21:57:27 -04:00 |
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Thomas Harte
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729fddea1c
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Switched to integer textures, likely to simplify for most use cases.
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2016-04-04 19:39:01 -04:00 |
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Thomas Harte
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3ca58b2a57
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Attemted further to diminish jumpiness.
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2016-03-22 22:07:30 -04:00 |
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Thomas Harte
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8cd5d40e00
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Made an attempt to reduce the amount of data heading to the GPU.
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2016-03-22 21:16:32 -04:00 |
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Thomas Harte
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3038704977
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Attempted to introduce a lowpass filter to the graphics output, reverted 6502 optimisations as seemingly not working.
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2016-03-21 22:01:25 -04:00 |
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Thomas Harte
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197cf2a834
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Commented out sync; it can probably be implicit.
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2016-03-20 21:42:05 -04:00 |
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Thomas Harte
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9da7716c72
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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.
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2016-03-19 22:46:17 -04:00 |
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Thomas Harte
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aa8a192c7e
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Simplified API down to their being a single texture with a specified depth.
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2016-03-19 17:37:55 -04:00 |
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Thomas Harte
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4ac1f959e9
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A shortcut here and a shortcut there; this allows me at least to determine whether use of a PBO gains anything.
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2016-03-19 17:07:05 -04:00 |
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Thomas Harte
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5b37a651ac
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Made an attemp to deal with glUnmapBuffer(GL_ARRAY_BUFFER) == GL_FALSE.
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2016-03-18 21:35:52 -04:00 |
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Thomas Harte
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0b1c9fb291
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Ensured I don't interrupt triangle strips for the purpose of glDrawArrays.
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2016-03-18 21:28:53 -04:00 |
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Thomas Harte
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620257e29e
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Switched to a client wait, as I try to figure out what's going on.
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2016-03-18 21:21:35 -04:00 |
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Thomas Harte
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2e4af90e2d
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Resolved output errors.
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2016-03-18 21:19:11 -04:00 |
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Thomas Harte
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10bc33464d
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I don't think this is quite correct, but it's better.
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2016-03-18 21:14:06 -04:00 |
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Thomas Harte
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61e880de03
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Keeping a buffer permanently bound is apparently illegal. So back to copying in on demand. Which I think still improves on synchronisation, but not much.
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2016-03-18 21:11:09 -04:00 |
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Thomas Harte
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c8ecfb89d8
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Some cleaning.
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2016-03-16 22:52:33 -04:00 |
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Thomas Harte
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0d27d3bb7f
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As messy as it is, this use glMapBufferRange to avoid explicit buffer submits.
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2016-03-16 22:29:22 -04:00 |
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Thomas Harte
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68da673a95
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Wrapped this up as explicitly only the Mac thing to do.
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2016-03-08 22:53:29 -05:00 |
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Thomas Harte
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bf5747f83e
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Made an attempt to chop out all the stuff of building up the OpenGL data from the stuff of parsing input.
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2016-03-08 22:40:23 -05:00 |
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Thomas Harte
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14b2927275
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Made further attempts to tidy up; trying to demarcate between public interface and private.
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2016-03-08 20:59:16 -05:00 |
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