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
|
0220d33562
|
Resolved failure of initial state setting, which was causing tests sometimes to fail.
|
2016-12-03 16:42:10 -05:00 |
|
Thomas Harte
|
c5016a3eaa
|
Completed flight of 'Outputs' to postfix underscores.
|
2016-12-03 11:02:34 -05:00 |
|
Thomas Harte
|
7c85cb62e4
|
Moved underscores, removed indirections where they're not necessary, converted those names that were still looking very Objective-C and moved the GL fence variable into the private area, where it should always have been.
|
2016-11-21 12:14:52 +08:00 |
|
Thomas Harte
|
bc03e12dc5
|
Switched to suffix underscores.
|
2016-11-21 11:57:45 +08:00 |
|
Thomas Harte
|
340607e13e
|
Switched the flywheel to suffix underscores.
|
2016-11-21 11:48:31 +08:00 |
|
Thomas Harte
|
e1285028aa
|
Removed a redundant clear and some dead code.
|
2016-11-21 11:42:45 +08:00 |
|
Thomas Harte
|
7b38247ab3
|
Updated outdated comments.
|
2016-11-21 11:40:13 +08:00 |
|
Thomas Harte
|
d7d0ed378a
|
Only the final intermediate buffer needs clearing, on reflection.
|
2016-11-21 11:26:07 +08:00 |
|
Thomas Harte
|
c89345c639
|
Reduced buffer size.
|
2016-11-21 11:21:14 +08:00 |
|
Thomas Harte
|
32dbfe947d
|
With hindsight, the elimination of this might have been overzealous.
|
2016-11-20 10:53:35 +08:00 |
|
Thomas Harte
|
ef0367d4a4
|
Corrected typo.
|
2016-11-20 09:12:43 +08:00 |
|
Thomas Harte
|
5bc165960a
|
Completed refactoring.
|
2016-11-20 09:12:06 +08:00 |
|
Thomas Harte
|
fda90c5aef
|
Documented.
|
2016-11-20 09:11:24 +08:00 |
|
Thomas Harte
|
c2349ee3f4
|
This thing has clearly becoma a real class.
|
2016-11-19 20:12:40 +08:00 |
|
Thomas Harte
|
7857ef774f
|
Ensured resets genuinely kill outstanding data.
|
2016-11-19 20:09:38 +08:00 |
|
Thomas Harte
|
a4c7b00ecd
|
Fixed code that was causing the failing test.
|
2016-11-19 19:55:30 +08:00 |
|
Thomas Harte
|
f59537bce9
|
Added a testing hook, but as of yet no tests.
|
2016-11-17 14:06:16 +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 |
|
Thomas Harte
|
57f0648742
|
Fleshed out first implementation of ArrayBuilder , albeit that I need to implement exhaustion properly, as soon as I think of a sensible way to handle synchronisation.
|
2016-11-17 10:39:30 +08:00 |
|
Thomas Harte
|
324a1de43d
|
Started pulling out array construction as a separate task.
|
2016-11-17 09:20:49 +08:00 |
|
Thomas Harte
|
c04a116a05
|
Fixed comment.
|
2016-11-16 23:14:56 +08:00 |
|
Thomas Harte
|
edeafd4d94
|
Wait, OpenGL textures go the other way.
|
2016-11-16 23:14:15 +08:00 |
|
Thomas Harte
|
6ac20e0066
|
Pushed responsibility for submitting texture contents up to the texture builder, simplifying the interface.
|
2016-11-16 23:13:06 +08:00 |
|
Thomas Harte
|
5c5e44874f
|
Even better: why include the 'Input' prefix when there's only one?
|
2016-11-16 22:57:17 +08:00 |
|
Thomas Harte
|
04b2688683
|
Attempted to reduce allocations.
|
2016-11-16 13:25:50 +08:00 |
|
Thomas Harte
|
c1a509910d
|
Documented this interface, albeit that the English could do with a second pass, and very sightly simplified inline with current usage.
|
2016-11-16 13:15:50 +08:00 |
|
Thomas Harte
|
4d0d5eb919
|
Renamed the 'input buffer builder' to the 'input texture builder' to be explicit about what sort of buffer, and killed the prefix since it's namespaced. Also switched to std::vector .
|
2016-11-16 12:31:32 +08:00 |
|
Thomas Harte
|
4ee4400801
|
Removed dead code.
|
2016-11-16 11:57:22 +08:00 |
|
Thomas Harte
|
6cb4950db4
|
Improved run-off area.
|
2016-11-16 11:53:15 +08:00 |
|
Thomas Harte
|
9ee11d7765
|
At the expense of API simplicity, at least for now, resolved the most glaring cause of dirty lines.
|
2016-11-16 11:34:05 +08:00 |
|
Thomas Harte
|
44d3fd6d5b
|
Fixed mistimed reset of the target output line. Now all that's left is occasional noise.
|
2016-11-16 11:22:12 +08:00 |
|
Thomas Harte
|
7a737e0790
|
Both pathways start with a buffer that clears to black. So no need to keep going on about it.
|
2016-11-16 11:12:08 +08:00 |
|
Thomas Harte
|
f63e849092
|
Sought completely to eliminate the outgoing concept of 'clearing zones'.
|
2016-11-16 11:10:34 +08:00 |
|
Thomas Harte
|
294adde344
|
Eliminated zoned clearing, in favour of a complete buffer clear on each load and attempted to reduce locking. But imperfectly.
|
2016-11-16 10:59:12 +08:00 |
|
Thomas Harte
|
ccedb6bea6
|
Introduced an intermediate buffer that collects lines before flushing them to the output buffer.
|
2016-11-16 10:49:18 +08:00 |
|
Thomas Harte
|
ba2adf8bb1
|
Normalised on std::vector rather than std::unique_ptr<uint8_t *> as (probably?) more idiomatic. Improved structure slightly. Introduced a container for line data, albeit one that isn't yet used.
|
2016-11-16 10:34:54 +08:00 |
|
Thomas Harte
|
9c550c594a
|
Moved audio work back into its own thread, but this time it queues up an all happens only upon a flush. Hopefully to resolve synchronisation cost concerns.
|
2016-11-09 21:17:50 -05:00 |
|
Thomas Harte
|
eccfdabeab
|
Temporarily disabled thread hop, until I can find a way to batch these things.
|
2016-11-03 22:52:02 -04:00 |
|
Thomas Harte
|
4258401384
|
Implemented flush , added a call to it from the filter speaker's destructor, to ensure no race conditions on accessing the various bits of instance state there and below.
|
2016-10-19 21:15:04 -04:00 |
|
Thomas Harte
|
c628b7c5c5
|
This is the real PAL frequency, I think.
|
2016-10-17 08:05:02 -04:00 |
|
Thomas Harte
|
1f857c619b
|
Fixed timing issues. Static box of frame achieved!
|
2016-10-12 21:42:36 -04:00 |
|
Thomas Harte
|
00e3ad9b04
|
Added a bit more ceiling for lowpass filtering on constrained machines.
|
2016-10-10 07:51:01 -04:00 |
|
Thomas Harte
|
e53455a936
|
Not having read the C++ synchronisation primitives before, this async task queue is probably incorrect. But nevertheless, let's have a quick go at employing it — in a hideously thread unsafe fashion — for audio generation. What can possibly go wrong?
|
2016-10-07 16:56:34 -04:00 |
|
Thomas Harte
|
dab3580111
|
Experimental: can I afford a lower sampling rate if there's a low-pass filter in effect?
|
2016-08-22 22:18:05 -04:00 |
|
Thomas Harte
|
1541273785
|
Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
|
2016-08-21 18:13:31 -04:00 |
|
Thomas Harte
|
c783090980
|
It turns out that the Vic has a 1.6Khz low-pass filter. So added that.
|
2016-08-21 12:13:41 -04:00 |
|
Thomas Harte
|
fef316932f
|
Moved opening bracket appropriately.
|
2016-07-04 21:14:28 -04:00 |
|
Thomas Harte
|
8db44eed3e
|
Added a default implementation of Speaker::skip_samples .
|
2016-07-04 20:48:27 -04:00 |
|
Thomas Harte
|
2bc87ee095
|
Merge branch 'master' of github.com:TomHarte/CLK
|
2016-07-01 16:28:18 -04:00 |
|
Thomas Harte
|
eefd0c17b6
|
Actually, I guess that to fulfil the contract I can't silently decide not to draw if I'm being told I definitely need to draw.
|
2016-07-01 16:27:45 -04:00 |
|
Thomas Harte
|
ed8f4d0476
|
Added some minor additional bits of documentation.
|
2016-06-30 08:46:29 -04:00 |
|
Thomas Harte
|
4ac619f569
|
glClientWaitSync appears to be a busy wait, at least on my machine. But why wait indefinitely anyway?
|
2016-06-29 21:32:47 -04:00 |
|
Thomas Harte
|
ff53accca0
|
Demonstrated that issue is coloured borders, made a guess as to buffer exhaustion, upped limits as a temporary fix.
|
2016-06-29 21:16:34 -04:00 |
|
Thomas Harte
|
2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr .
|
2016-06-23 20:52:44 -04:00 |
|
Thomas Harte
|
c18cc4c8f5
|
It appears the Vic's output is sine-ish, after all. Also adjusted centre of display, simultaneously adding some validation on that.
|
2016-06-14 07:29:35 -04:00 |
|
Thomas Harte
|
fcf4b14344
|
Extended to allow floating-point sampling rates. Which makes sense.
|
2016-06-13 19:30:41 -04:00 |
|
Thomas Harte
|
2992183aae
|
Switched to a lookup table for phase, temporarily in YUV colour space, probably. Working on it.
|
2016-06-12 14:39:17 -04:00 |
|
Thomas Harte
|
68a8851c52
|
Increased parallelism, allowing a simplification in the GL view.
|
2016-06-02 22:29:09 -04:00 |
|
Thomas Harte
|
1e0fcbbee8
|
Made a very basic stab at a couple of the tone generators, added straight-through path for the speaker when input rate exactly equals output rate.
|
2016-06-01 19:53:16 -04:00 |
|
Thomas Harte
|
5c4f35e13f
|
Finally started on generalising the C++ stuff so as to be able to be able to get a working audio binding on the OS-specific side without further repetition by factoring an appropriate protocol out from the Electron and sketching out the correct speaker class for the Atari. Added a method to ask it what a good output frequency would be.
|
2016-05-31 21:23:44 -04:00 |
|
Thomas Harte
|
4ad074fc78
|
Introduced a four-cycle delay between playfield fetch and display, curing Yar's Revenge. Also disabled barrel roll scanling colouring again. I really need to make my mind up on that.
|
2016-05-16 19:55:56 -04:00 |
|
Thomas Harte
|
9d92ad659f
|
Established the basic timing loop, albeit without clocking delays yet.
|
2016-05-16 08:01:29 -04:00 |
|
Thomas Harte
|
00a2b42080
|
Made thread-safe.
|
2016-05-15 15:19:52 -04:00 |
|
Thomas Harte
|
091516e3cb
|
The semantics might need better exposition but: fixed UniformXfv calls plus matrix calls, documented new semantics on all setters.
|
2016-05-15 14:59:59 -04:00 |
|
Thomas Harte
|
328fabcd10
|
Ensured values aren't dangling pointers.
|
2016-05-14 18:15:10 -04:00 |
|
Thomas Harte
|
492dc7ccbf
|
Made an attempt to queue uniform changes until the next call to bind . That's to allow usage from other threads.
|
2016-05-14 18:06:55 -04:00 |
|
Thomas Harte
|
30f335fa35
|
Switched pervasively to using the named slot uniform setters on Shader .
|
2016-05-13 22:08:32 -04:00 |
|
Thomas Harte
|
8d52765f40
|
Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
|
2016-05-12 22:22:24 -04:00 |
|
Thomas Harte
|
6d65bc9b3a
|
Permitted a wider error window on vertical sync, tidied things up a little and started trying to move towards full implementation of the OpenGL contract.
|
2016-05-11 22:11:01 -04:00 |
|
Thomas Harte
|
4b3c4082d2
|
These functions appear correctly to model the NTSC and PAL palettes; the CRT's attempt to switch function doesn't work properly yet though.
|
2016-05-11 21:07:18 -04:00 |
|
Thomas Harte
|
a8ce021136
|
Fixed comment.
|
2016-05-10 19:59:03 -04:00 |
|
Thomas Harte
|
0d2d6a452d
|
Fixed some dangling buffer management issues.
|
2016-05-10 19:55:34 -04:00 |
|
Thomas Harte
|
b6d2c8cb63
|
Switched to instaced drawing for source[/intermediate] runs too, reducing that data transfer footprint by 50%.
|
2016-05-10 19:50:12 -04:00 |
|
Thomas Harte
|
7369139f7e
|
Realised that phase time can fit inside a single byte, since it's always (well) within the first quarter of the line — and if it somehow weren't (?) then taking it modulo the frequency would do.
|
2016-05-10 19:14:57 -04:00 |
|
Thomas Harte
|
47ae402f7e
|
Introduced a shorthand for setting up array attributes.
|
2016-05-10 19:11:48 -04:00 |
|
Thomas Harte
|
257420b0f7
|
Fixed potential output error if buffer top were hit; clarified buffer size constants.
|
2016-05-10 19:04:03 -04:00 |
|
Thomas Harte
|
309313c470
|
Update CRTConstants.hpp
Lack of data duplication means this storage can be smaller.
|
2016-05-10 10:49:48 -04:00 |
|
Thomas Harte
|
1d0bcb416d
|
Dropped the size per output run back down to 8 bytes.
|
2016-05-10 07:47:47 -04:00 |
|
Thomas Harte
|
b0f0315f12
|
Fixed: this now implements 12-byte instancing for output runs.
|
2016-05-10 07:30:12 -04:00 |
|
Thomas Harte
|
86dab3a5d6
|
Quickest first attempt to switch to instancing for the output array. Texture coordinates seem to be off.
|
2016-05-10 07:23:47 -04:00 |
|
Thomas Harte
|
daec21d3d8
|
Found and fixed off-by-one error. Display should now be completely fixed.
|
2016-05-09 21:14:59 -04:00 |
|
Thomas Harte
|
59d766b325
|
Rationalised buffer sizes.
|
2016-05-09 19:17:03 -04:00 |
|
Thomas Harte
|
7e2bd78891
|
With an eye towards instancing, moved away from circular buffers.
|
2016-05-09 19:14:30 -04:00 |
|
Thomas Harte
|
ad734f341f
|
Attempted fully to perfect memove , albeit that it's not affecting either current machine.
|
2016-05-09 07:44:05 -04:00 |
|
Thomas Harte
|
8eb058064c
|
Fixed: ensured that the attempt to plot a misplaced write occurs correctly.
|
2016-05-09 07:42:26 -04:00 |
|
Thomas Harte
|
e6a7161e87
|
Made some minor corrections on the copyback of misplaced write data.
|
2016-05-09 07:39:57 -04:00 |
|
Thomas Harte
|
45af963b9a
|
Moved more of the circular logic inside getCircularRanges in order to eliminate one more potential source of error.
|
2016-05-09 07:34:37 -04:00 |
|
Thomas Harte
|
cec9ad0dc6
|
Switched to a more rational interface, ensured output_level will work when eventually needed, and that neither it nor output_data attempts a recursive lock.
|
2016-05-09 07:02:12 -04:00 |
|
Thomas Harte
|
a82fa31370
|
Switched back to broad locking for CRT updates. To eliminate one more thing.
|
2016-05-09 06:58:26 -04:00 |
|
Thomas Harte
|
47302de23a
|
Switched to simpler storage for _image .
|
2016-05-08 21:11:56 -04:00 |
|
Thomas Harte
|
1f02c5df88
|
Tidied up some further loose ends.
|
2016-05-08 20:58:18 -04:00 |
|
Thomas Harte
|
7b5982e455
|
Removed last mentions of 'lateral'.
|
2016-05-08 20:51:28 -04:00 |
|
Thomas Harte
|
986019f9f9
|
Fixed error that could lead to split output run vertex writes.
|
2016-05-08 20:30:59 -04:00 |
|
Thomas Harte
|
1a214a8308
|
Fence sync tied up. Remaining glitches are likely off-by-one-type errors but we'll see.
|
2016-05-08 19:45:36 -04:00 |
|
Thomas Harte
|
ef3b91d3aa
|
Made an attempt to get formal on synchronisation.
|
2016-05-08 19:42:33 -04:00 |
|
Thomas Harte
|
dd469fe83a
|
Switched back to normal frame drawing logic and cleaned up the circular range stuff a little, to make it clear that no errors lie there.
|
2016-05-08 18:50:30 -04:00 |
|
Thomas Harte
|
ccdbec3ffc
|
Corrected for potential lost lines.
|
2016-05-08 16:43:11 -04:00 |
|
Thomas Harte
|
a75259ce9f
|
Removed some dead caveman debugging statements.
|
2016-05-08 16:18:42 -04:00 |
|
Thomas Harte
|
9b2061be98
|
Actually, that should probably be 1/outputTextureSize, as the output range is -1 to +1.
|
2016-05-08 16:09:39 -04:00 |
|
Thomas Harte
|
9485ef2c8c
|
At last a genuine bug fixed: was nudging the wrong amount in intermediate shaders.
|
2016-05-08 16:07:36 -04:00 |
|
Thomas Harte
|
8e4ab37719
|
Things are back pretty much to where they were, but offset is eliminated as an input.
|
2016-05-07 18:37:18 -04:00 |
|
Thomas Harte
|
c73751b15a
|
Reverted deliberately broken segments to produce something mergeable.
|
2016-05-05 21:27:13 -04:00 |
|
Thomas Harte
|
a74f081aa9
|
Put lateral lookup table directly into the shader.
|
2016-05-05 21:21:27 -04:00 |
|
Thomas Harte
|
8284b272ad
|
Picked appropriate new-world values for various buffers.
|
2016-05-05 20:00:28 -04:00 |
|
Thomas Harte
|
284b310074
|
Attempted to implement end-of-buffer tests for all stages.
|
2016-05-05 19:52:05 -04:00 |
|
Thomas Harte
|
e9a9cfb09f
|
Fixed off-by-one error on texture upload.
|
2016-05-05 07:22:49 -04:00 |
|
Thomas Harte
|
f621cc8523
|
Withdrew the pixel unpack buffer in order to avoid the potential for a paused machine to be undrawable. The cost is at least an extra memcpy per frame; I'm letting the driver worry about the whole process for now.
|
2016-05-04 21:27:10 -04:00 |
|
Thomas Harte
|
2e7ac0e6db
|
With a lot of logging also currently ongoing, fixed circular ranges for clearing and when covering an entire buffer.
|
2016-05-04 21:08:38 -04:00 |
|
Thomas Harte
|
87df57195d
|
Started on an attempt not to treat the various buffers as free to loop within, starting with the input texture.
|
2016-05-04 07:39:45 -04:00 |
|
Thomas Harte
|
3684c6404f
|
Proven through deliberate inefficiency: the issues are (i) texture upload; and (ii) buffer wraparound.
|
2016-05-03 22:22:12 -04:00 |
|
Thomas Harte
|
759fbd89ca
|
Switched pixel unpack buffer back to explicit flushes.
|
2016-05-03 21:26:09 -04:00 |
|
Thomas Harte
|
2541711061
|
Made attempts (i) to flush buffers before unmapping them; and (ii) to bring texture uploads within the new orthodoxy.
|
2016-05-03 20:56:47 -04:00 |
|
Thomas Harte
|
fc1a67c157
|
Lateral is no longer written per vertex. It's a fixed list.
|
2016-05-03 18:45:55 -04:00 |
|
Thomas Harte
|
535d272039
|
Tweaks here, tweaks there.
|
2016-05-03 18:15:24 -04:00 |
|
Thomas Harte
|
6d5a1b33ee
|
Turned the colour up just a little, slightly lowered luminance signal strength.
|
2016-05-03 07:51:14 -04:00 |
|
Thomas Harte
|
31f1e6d5c0
|
Introduced a separate stage for luminance filtering.
|
2016-05-03 07:46:40 -04:00 |
|
Thomas Harte
|
29e7c96e4c
|
Brought monitor mode inside the pipeline and added an intermediate filter.
|
2016-05-02 21:05:58 -04:00 |
|
Thomas Harte
|
4a0e1dc789
|
Switched to explicit flushing of data.
|
2016-05-01 22:33:00 -04:00 |
|
Thomas Harte
|
c93bcf9f28
|
Discovered cause of clears: stale code. Tweaked persistence, again.
|
2016-05-01 22:28:33 -04:00 |
|
Thomas Harte
|
09ed8eb654
|
Quelle surprise, failure to find strikes again. Fixed.
|
2016-05-01 21:07:27 -04:00 |
|
Thomas Harte
|
1b6754c5f8
|
Shuffled code, realised I wasn't actually binding my shader.
|
2016-05-01 19:22:24 -04:00 |
|
Thomas Harte
|
69984b54e5
|
Fixed aspect ratio storage. Adjusted indentation slightly.
|
2016-05-01 16:49:44 -04:00 |
|
Thomas Harte
|
6982e945fb
|
Fixed those issues breaking GL state, I hope.
|
2016-05-01 16:17:52 -04:00 |
|
Thomas Harte
|
4ec4cceb84
|
Made a first attempt at adding draw-as-a-quad functionality to texture targets.
|
2016-05-01 13:52:35 -04:00 |
|
Thomas Harte
|
2616d748fe
|
Introduced bind-if-necessary/unbind semantics for shaders.
|
2016-05-01 11:07:49 -04:00 |
|
Thomas Harte
|
fe2abbd4ed
|
Minor adjustments to ensure sampling occurs as intended.
|
2016-04-30 20:48:09 -04:00 |
|
Thomas Harte
|
16ef09fc2b
|
Made an attempt intelligently to use bilinear filtering to increase filtering quality with the same number of samples.
|
2016-04-29 18:37:35 -04:00 |
|
Thomas Harte
|
501ab74eaf
|
Fixed time multiplier calculation.
|
2016-04-28 22:12:59 -04:00 |
|
Thomas Harte
|
23ea832f41
|
Increased brightness in television mode, added a clear if screen resolution changes.
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2016-04-28 22:04:47 -04:00 |
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Thomas Harte
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3638414b37
|
Added additional comments.
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2016-04-28 21:55:14 -04:00 |
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Thomas Harte
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e6c3b148ac
|
Switched wholeheartedly to the new shader.
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2016-04-28 21:45:44 -04:00 |
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Thomas Harte
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8538b62ea2
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Made an attempt to extract and consolidate the logic behind the intermediate shaders.
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2016-04-28 21:04:59 -04:00 |
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Thomas Harte
|
ef3647f6cf
|
Being bold: per-scan timing isn't coming back, I think, so started completely removing it.
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2016-04-27 23:00:43 -04:00 |
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Thomas Harte
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87c778ebb7
|
Fixed code use of parameter name.
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2016-04-27 22:58:53 -04:00 |
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Thomas Harte
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494ef6a324
|
Updated documentation, taking the opportunity to improve a parameter name.
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2016-04-27 22:57:40 -04:00 |
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Thomas Harte
|
7c20fce467
|
I guess NumberOfFields is done for.
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2016-04-27 22:48:37 -04:00 |
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Thomas Harte
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8849dc3265
|
Finished consolidation into OutputShader. With its documentation yet to update.
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2016-04-27 22:41:32 -04:00 |
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Thomas Harte
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496d979aca
|
Made a decision to clean up by creating per-shader classes. Well, more or less. First thing to be factored out: the output shader.
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2016-04-27 22:29:54 -04:00 |
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Thomas Harte
|
f6d58f1ce7
|
Played in the margins with image retention.
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2016-04-26 22:14:12 -04:00 |
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Thomas Harte
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416c944f02
|
Experimental: let's try accumulating history directly in the framebuffer.
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2016-04-26 21:41:39 -04:00 |
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Thomas Harte
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6c567d166a
|
Fixed colour burst acceptance, switched to an integral single byte streaming of Atari colours.
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2016-04-25 20:56:15 -04:00 |
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Thomas Harte
|
9b64f64db7
|
Attempted to normalise some style decisions.`
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2016-04-24 22:32:24 -04:00 |
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Thomas Harte
|
884755c560
|
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
|
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
|
d221c712b0
|
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
|
acab22d95a
|
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
|
d393776677
|
Fixed an incorrect sign.
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2016-04-24 19:29:30 -04:00 |
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Thomas Harte
|
9b2b7a09eb
|
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
|
929cfc49cb
|
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
|
082003ed0a
|
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
|
d0f9a6c2f5
|
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
|
775fc270e6
|
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
|
80a3169674
|
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
|
bdaf4cee43
|
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
|
c123f3bf74
|
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
|
a4889074b8
|
Moved final colour space conversion out of the innermost loop.
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2016-04-22 21:29:27 -04:00 |
|
Thomas Harte
|
8ff1f82008
|
Fixed accidental channel duplication.
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2016-04-22 19:18:28 -04:00 |
|
Thomas Harte
|
95639f1189
|
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
|
23311d633b
|
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
|
59c07f7ddd
|
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
|
cc7bf97a9c
|
This now attempts to filter y.
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2016-04-21 22:32:30 -04:00 |
|
Thomas Harte
|
e7ed1224a5
|
Introduced the second filtering stage, albeit that it presently does nothing whatsoever.
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2016-04-21 21:32:36 -04:00 |
|
Thomas Harte
|
23ce032ba1
|
Started edging towards the necessary flexibility for the other two intermediate shaders.
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2016-04-21 20:21:34 -04:00 |
|
Thomas Harte
|
4b9985626d
|
Started commuting alpha to direction. The incoming amplitude is now honoured.
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2016-04-21 19:53:41 -04:00 |
|
Thomas Harte
|
638b08302b
|
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
|
d9a9dffe63
|
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
|
8232ed765e
|
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
|
e2da77fb8b
|
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
|
ef83595af3
|
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
|
3d7a3ce995
|
Eliminated some redundant texture binds.
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2016-04-19 22:30:05 -04:00 |
|
Thomas Harte
|
145c0b3b71
|
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.
|
2016-04-19 22:21:26 -04:00 |
|
Thomas Harte
|
66f2c10c04
|
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.
|
2016-04-19 21:00:48 -04:00 |
|
Thomas Harte
|
88e237b8de
|
Standardised indentation and added one extra piece of documentation.
|
2016-04-19 20:53:55 -04:00 |
|
Thomas Harte
|
20aa9e291d
|
Attempted to deal with the precision issues causing 'television' output currently to differ from 'monitor' output. Documented TextureTarget while I'm here.
|
2016-04-19 20:51:34 -04:00 |
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Thomas Harte
|
6f52ed14d6
|
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.
|
2016-04-19 19:32:52 -04:00 |
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Thomas Harte
|
b90a487a16
|
Attempted to enable both monitor and television output paths in the same codebase. The television route seems to be broken. Investigation required.
|
2016-04-19 19:30:50 -04:00 |
|
Thomas Harte
|
6c9bcfa637
|
Got rigorous on exceptions, started working towards having a working 'composite' shader at the same time as having a working RGB shader.
|
2016-04-19 08:05:43 -04:00 |
|
Thomas Harte
|
bcc784bda9
|
Introduced an interface for specifying attribute bindings, taking the opportunity to document the interface and introduce exceptions.
|
2016-04-19 07:23:15 -04:00 |
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Thomas Harte
|
9d39c14752
|
Nothing of substance different; main current mystery: why do old frames recur and why does other jumpiness occur? Do I need some explicit synchronistion?
|
2016-04-18 22:18:03 -04:00 |
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Thomas Harte
|
cf55a0c423
|
Fixed: composite output y is now incremented upon the start of retrace, that causing it to have different values at either edge of scans.
|
2016-04-18 21:49:45 -04:00 |
|
Thomas Harte
|
9580dde3ad
|
Fixed left/right shuffling. Was simply failing to supply the integer version of coordinates.
|
2016-04-18 21:40:23 -04:00 |
|
Thomas Harte
|
d5bac2f04f
|
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.
|
2016-04-18 21:32:48 -04:00 |
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Thomas Harte
|
bf29c8e2bf
|
Fixed mismatch in television/monitor selection, ticked view for drawing concurrently, since it can, removed stray space.
|
2016-04-18 19:01:15 -04:00 |
|
Thomas Harte
|
5980f5e991
|
Number of taps can be specified explicitly if you desire.
|
2016-04-17 20:45:57 -04:00 |
|
Thomas Harte
|
499f7ace07
|
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.
|
2016-04-17 20:43:20 -04:00 |
|
Thomas Harte
|
9ede284eb6
|
Added blanking source runs, ensuring the rolling buffer is appropriately cleared.
|
2016-04-17 20:34:52 -04:00 |
|
Thomas Harte
|
43cae267f9
|
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.
|
2016-04-17 18:08:05 -04:00 |
|
Thomas Harte
|
a8fbd82a3d
|
Made an attempt at correctly mapping to eye coordinates.
|
2016-04-17 17:21:24 -04:00 |
|
Thomas Harte
|
ece51917fa
|
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.
|
2016-04-17 17:17:59 -04:00 |
|
Thomas Harte
|
abce0ed3c4
|
Added setup of the source vertex array.
|
2016-04-17 16:17:23 -04:00 |
|
Thomas Harte
|
6ff9ffba6c
|
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.
|
2016-04-17 15:51:28 -04:00 |
|
Thomas Harte
|
104f44f27f
|
Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.
|
2016-04-14 22:20:47 -04:00 |
|
Thomas Harte
|
323f1a24db
|
Introduced blackout period solution to vertical sync confusing horizontal sync. Need to find out whether it's accurate.
|
2016-04-14 20:30:45 -04:00 |
|
Thomas Harte
|
6a17c2992d
|
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.
|
2016-04-13 22:31:59 -04:00 |
|
Thomas Harte
|
026ce0255f
|
Source runs are now captured, and that buffer appropriately reset.
|
2016-04-13 22:20:13 -04:00 |
|
Thomas Harte
|
2ea02ed127
|
A source array buffer is also now created, mapped, unmapped, etc.
|
2016-04-13 22:14:18 -04:00 |
|