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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5980f5e991
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Number of taps can be specified explicitly if you desire.
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2016-04-17 20:45:57 -04:00 |
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Thomas Harte
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499f7ace07
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Re-enabled working video output for the Electron for the day and consolidated the rough metric I'm using to pick a number of taps for the audio filter.
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2016-04-17 20:43:20 -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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6a17c2992d
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Introduced a compile-time configurable audio divider, set it arbitrarily to '8' for now. Discovered why my graphics aren't centred and added a TODO.
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2016-04-13 22:31:59 -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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4be8053ba9
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Updated documentation.
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2016-04-12 22:38:49 -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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d100c755b7
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The final line runs on a diagonal. Leave room for that.
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2016-04-11 23:13:14 -04:00 |
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Thomas Harte
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7276a06cc0
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Added a helper to calculate a visible rect based on output timings, used it to scale the Electron output up to the full window size.
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2016-04-11 21:47:23 -04:00 |
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Thomas Harte
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e45fe43801
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Removed some dead caveman debugging.
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2016-04-10 23:02:34 -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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