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.
|
2016-04-28 22:04:47 -04:00 |
|
Thomas Harte
|
3638414b37
|
Added additional comments.
|
2016-04-28 21:55:14 -04:00 |
|
Thomas Harte
|
e6c3b148ac
|
Switched wholeheartedly to the new shader.
|
2016-04-28 21:45:44 -04:00 |
|
Thomas Harte
|
8538b62ea2
|
Made an attempt to extract and consolidate the logic behind the intermediate shaders.
|
2016-04-28 21:04:59 -04:00 |
|
Thomas Harte
|
ef3647f6cf
|
Being bold: per-scan timing isn't coming back, I think, so started completely removing it.
|
2016-04-27 23:00:43 -04:00 |
|
Thomas Harte
|
87c778ebb7
|
Fixed code use of parameter name.
|
2016-04-27 22:58:53 -04:00 |
|
Thomas Harte
|
494ef6a324
|
Updated documentation, taking the opportunity to improve a parameter name.
|
2016-04-27 22:57:40 -04:00 |
|
Thomas Harte
|
7c20fce467
|
I guess NumberOfFields is done for.
|
2016-04-27 22:48:37 -04:00 |
|
Thomas Harte
|
8849dc3265
|
Finished consolidation into OutputShader. With its documentation yet to update.
|
2016-04-27 22:41:32 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-27 22:29:54 -04:00 |
|
Thomas Harte
|
f6d58f1ce7
|
Played in the margins with image retention.
|
2016-04-26 22:14:12 -04:00 |
|
Thomas Harte
|
416c944f02
|
Experimental: let's try accumulating history directly in the framebuffer.
|
2016-04-26 21:41:39 -04:00 |
|
Thomas Harte
|
6c567d166a
|
Fixed colour burst acceptance, switched to an integral single byte streaming of Atari colours.
|
2016-04-25 20:56:15 -04:00 |
|
Thomas Harte
|
9b64f64db7
|
Attempted to normalise some style decisions.`
|
2016-04-24 22:32:24 -04:00 |
|
Thomas Harte
|
884755c560
|
Ensured the GL context is available when switching Atari 2600 output, and that it locks the output.
|
2016-04-24 20:56:21 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-24 20:47:24 -04:00 |
|
Thomas Harte
|
d221c712b0
|
Ensured GL context is active when destructing CRTOpenGL.
|
2016-04-24 20:34:25 -04:00 |
|
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.
|
2016-04-24 20:27:03 -04:00 |
|
Thomas Harte
|
d393776677
|
Fixed an incorrect sign.
|
2016-04-24 19:29:30 -04:00 |
|
Thomas Harte
|
9b2b7a09eb
|
Ensured that colour space changes take effect.
|
2016-04-24 19:16:23 -04:00 |
|
Thomas Harte
|
929cfc49cb
|
Extended window for picking output frequency, attempted to consolidate CRT OpenGL timing uniforms for approprate resetting.
|
2016-04-24 18:58:31 -04:00 |
|
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.
|
2016-04-24 18:36:22 -04:00 |
|
Thomas Harte
|
d0f9a6c2f5
|
Added a dump-the-input default RGB output shader. Which at least proves that the Atari 2600 is generally still working.
|
2016-04-24 17:35:25 -04:00 |
|
Thomas Harte
|
775fc270e6
|
Fixed bug whereby first frame drawn has random collection of data.
|
2016-04-24 07:00:22 -04:00 |
|
Thomas Harte
|
80a3169674
|
Started reviving the Atari 2600 emulation. Put new startup sequence into place.
|
2016-04-24 06:56:08 -04:00 |
|
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.
|
2016-04-24 06:16:41 -04:00 |
|
Thomas Harte
|
c123f3bf74
|
Fixed run extension, temporarily forced colour amplitude.
|
2016-04-23 14:16:49 -04:00 |
|
Thomas Harte
|
a4889074b8
|
Moved final colour space conversion out of the innermost loop.
|
2016-04-22 21:29:27 -04:00 |
|
Thomas Harte
|
8ff1f82008
|
Fixed accidental channel duplication.
|
2016-04-22 19:18:28 -04:00 |
|
Thomas Harte
|
95639f1189
|
Made attempt to introduce final filtering stage and output.
|
2016-04-22 19:15:59 -04:00 |
|
Thomas Harte
|
23311d633b
|
Doubled phosphor life, added comment on required final stage fix for tomorrow.
|
2016-04-21 23:15:48 -04:00 |
|
Thomas Harte
|
59c07f7ddd
|
This, at least, is an attempt to decode chrominance, as yet unfiltered, and not commuted to RGB (and possibly packed incorrectly).
|
2016-04-21 23:01:54 -04:00 |
|
Thomas Harte
|
cc7bf97a9c
|
This now attempts to filter y.
|
2016-04-21 22:32:30 -04:00 |
|
Thomas Harte
|
e7ed1224a5
|
Introduced the second filtering stage, albeit that it presently does nothing whatsoever.
|
2016-04-21 21:32:36 -04:00 |
|
Thomas Harte
|
23ce032ba1
|
Started edging towards the necessary flexibility for the other two intermediate shaders.
|
2016-04-21 20:21:34 -04:00 |
|
Thomas Harte
|
4b9985626d
|
Started commuting alpha to direction. The incoming amplitude is now honoured.
|
2016-04-21 19:53:41 -04:00 |
|
Thomas Harte
|
638b08302b
|
The initial composite buffer is now genuinely a composite signal.
|
2016-04-21 19:37:32 -04:00 |
|
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.
|
2016-04-20 21:05:32 -04:00 |
|
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.
|
2016-04-20 20:44:25 -04:00 |
|
Thomas Harte
|
e2da77fb8b
|
Clarified constants, ensured monitor mode works from startup.
|
2016-04-19 22:53:39 -04:00 |
|
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).
|
2016-04-19 22:38:11 -04:00 |
|
Thomas Harte
|
3d7a3ce995
|
Eliminated some redundant texture binds.
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
Thomas Harte
|
04d1b65c93
|
Reinstated texture target creation, cut them down to merely RGB.
|
2016-04-12 22:48:47 -04:00 |
|
Thomas Harte
|
4be8053ba9
|
Updated documentation.
|
2016-04-12 22:38:49 -04:00 |
|
Thomas Harte
|
4d889d9c7f
|
Made an attempt slightly to simplify the fragment processor, at both ends.
|
2016-04-12 22:35:11 -04:00 |
|
Thomas Harte
|
fe8b0ebc7e
|
Tidied up a little, mostly bumping things out of just-in-time creation that I can just do well in advance.
|
2016-04-12 22:31:13 -04:00 |
|
Thomas Harte
|
069ec2e889
|
In search of the cause of performance issues again, excised the per-pixel sin until it can be further evaluated.
|
2016-04-11 23:13:54 -04:00 |
|
Thomas Harte
|
d100c755b7
|
The final line runs on a diagonal. Leave room for that.
|
2016-04-11 23:13:14 -04:00 |
|
Thomas Harte
|
7276a06cc0
|
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.
|
2016-04-11 21:47:23 -04:00 |
|
Thomas Harte
|
e45fe43801
|
Removed some dead caveman debugging.
|
2016-04-10 23:02:34 -04:00 |
|
Thomas Harte
|
bdb99ba92f
|
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.
|
2016-04-10 22:56:52 -04:00 |
|
Thomas Harte
|
8701366277
|
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.
|
2016-04-10 21:34:40 -04:00 |
|
Thomas Harte
|
fc5530b513
|
Realising I've managed to confuse input and output, started shift to 'source' for what 'input' was.
|
2016-04-10 15:58:43 -04:00 |
|
Thomas Harte
|
6dbd20ffde
|
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.
|
2016-04-05 20:32:55 -04:00 |
|
Thomas Harte
|
c0cd1ed89e
|
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.
|
2016-04-04 21:57:27 -04:00 |
|
Thomas Harte
|
729fddea1c
|
Switched to integer textures, likely to simplify for most use cases.
|
2016-04-04 19:39:01 -04:00 |
|
Thomas Harte
|
3ca58b2a57
|
Attemted further to diminish jumpiness.
|
2016-03-22 22:07:30 -04:00 |
|
Thomas Harte
|
8cd5d40e00
|
Made an attempt to reduce the amount of data heading to the GPU.
|
2016-03-22 21:16:32 -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
|
197cf2a834
|
Commented out sync; it can probably be implicit.
|
2016-03-20 21:42:05 -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
|
aa8a192c7e
|
Simplified API down to their being a single texture with a specified depth.
|
2016-03-19 17:37:55 -04:00 |
|
Thomas Harte
|
4ac1f959e9
|
A shortcut here and a shortcut there; this allows me at least to determine whether use of a PBO gains anything.
|
2016-03-19 17:07:05 -04:00 |
|
Thomas Harte
|
5b37a651ac
|
Made an attemp to deal with glUnmapBuffer(GL_ARRAY_BUFFER) == GL_FALSE .
|
2016-03-18 21:35:52 -04:00 |
|
Thomas Harte
|
0b1c9fb291
|
Ensured I don't interrupt triangle strips for the purpose of glDrawArrays.
|
2016-03-18 21:28:53 -04:00 |
|
Thomas Harte
|
620257e29e
|
Switched to a client wait, as I try to figure out what's going on.
|
2016-03-18 21:21:35 -04:00 |
|
Thomas Harte
|
2e4af90e2d
|
Resolved output errors.
|
2016-03-18 21:19:11 -04:00 |
|
Thomas Harte
|
10bc33464d
|
I don't think this is quite correct, but it's better.
|
2016-03-18 21:14:06 -04:00 |
|
Thomas Harte
|
61e880de03
|
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.
|
2016-03-18 21:11:09 -04:00 |
|
Thomas Harte
|
c8ecfb89d8
|
Some cleaning.
|
2016-03-16 22:52:33 -04:00 |
|
Thomas Harte
|
0d27d3bb7f
|
As messy as it is, this use glMapBufferRange to avoid explicit buffer submits.
|
2016-03-16 22:29:22 -04:00 |
|
Thomas Harte
|
ca35a7e222
|
Ensured that a much greater input rate than output is handled correctly.
|
2016-03-16 20:38:17 -04:00 |
|
Thomas Harte
|
4cd0aa3416
|
Completed FIR filter based audio output.
|
2016-03-15 23:37:35 -04:00 |
|
Thomas Harte
|
726c98446a
|
Fixed a couple of memory leaks, at least got as far as instantiating a filter.
|
2016-03-15 21:34:00 -04:00 |
|
Thomas Harte
|
67dffc89e0
|
Stripped unnecessary includes.
|
2016-03-13 13:25:34 -04:00 |
|
Thomas Harte
|
7255408313
|
Experimented with going back to horizontal sync on leading edge; not sure so (temporarily?) disabled.
|
2016-03-08 22:54:05 -05:00 |
|
Thomas Harte
|
68da673a95
|
Wrapped this up as explicitly only the Mac thing to do.
|
2016-03-08 22:53:29 -05:00 |
|
Thomas Harte
|
bf5747f83e
|
Made an attempt to chop out all the stuff of building up the OpenGL data from the stuff of parsing input.
|
2016-03-08 22:40:23 -05:00 |
|
Thomas Harte
|
14b2927275
|
Made further attempts to tidy up; trying to demarcate between public interface and private.
|
2016-03-08 20:59:16 -05:00 |
|
Thomas Harte
|
c7976dd657
|
Started trying to clean up my Outputs namespace by moving stuff related to the CRT underneath a separate subnamespace.
|
2016-03-08 20:49:07 -05:00 |
|
Thomas Harte
|
bb09a5f58c
|
The attribute locations don't really need to be stored. They can be transient.
|
2016-03-07 21:42:21 -05:00 |
|
Thomas Harte
|
6dfe877c43
|
Basic attempts to organise myself into shape for composite output continue.
|
2016-03-07 21:22:47 -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
|
2de229152f
|
Started sketching out shaders to do the first part of the composite conversion.
|
2016-03-07 19:21:04 -05:00 |
|
Thomas Harte
|
cd9c62acca
|
Still stepping slowly towards a working composite mode, switched the RGB sampling function to returning a vec4 , which may be of benefit to any machine with a brightness part of an RGB signal, and started edging towards at least having the correct GLSL programs ready for converting composite output.
|
2016-03-07 19:08:26 -05:00 |
|
Thomas Harte
|
3b6c9c15a1
|
Switching momentarily back to monitor mode, resolved why I was suddenly getting no output upon creating some texture targets.
|
2016-03-07 18:55:15 -05:00 |
|
Thomas Harte
|
eefd17ed4c
|
Fixed sync response in composite scan output generation and stored texture coordinates.
|
2016-03-05 21:52:22 -05:00 |
|
Thomas Harte
|
6cddb4c9c8
|
Added a first attempt to generate output scans for composite mode. So this in theory completes the CPU side of composite operations. Though I'm sure problems will reveal themselves.
|
2016-03-05 21:18:28 -05:00 |
|
Thomas Harte
|
3f39803d32
|
Switched to triangle strips, to eliminate the need for any temporary storage for the composite output path.
|
2016-03-05 20:47:11 -05:00 |
|
Thomas Harte
|
23c223e2ed
|
Started edging towards completing the CPU side of accumulating enough data for composite decoding.
|
2016-03-05 17:55:18 -05:00 |
|
Thomas Harte
|
5c8db71c64
|
Corrected some constants, ensured both machines (so far) are setting the output device.
|
2016-03-05 16:19:10 -05:00 |
|
Thomas Harte
|
70b6d51451
|
Ever more baby steps back towards composite decoding.
|
2016-03-05 14:36:12 -05:00 |
|
Thomas Harte
|
2f7626a5e0
|
Okay, this definitely definitely is supposed to be this way around.
|
2016-02-28 22:00:05 -05:00 |
|
Thomas Harte
|
3449120c24
|
Added a note to future self, put the scan edge generator back to the way round it was before.
|
2016-02-27 22:51:37 -05:00 |
|
Thomas Harte
|
7839d93344
|
With the provision of an extra hint to the CRT and, finally, the realisation about why my scans weren't exactly joining up, improved output precision.
|
2016-02-27 22:39:01 -05:00 |
|
Thomas Harte
|
1c6de7692d
|
Made an attempt to fix tape output interrupts; offloaded raster width and placing conversion to the GPU.
|
2016-02-27 20:37:41 -05:00 |
|
Thomas Harte
|
db18c85423
|
Simplified the run builder rather; put a double check of Electron timing in place.
|
2016-02-25 22:01:42 -05:00 |
|
Thomas Harte
|
1eea28b692
|
Disabled some debugging parts, added some others, marked some things as inline. Ticking over.
|
2016-02-22 23:35:42 -05:00 |
|
Thomas Harte
|
4b28e7b974
|
Switched back to a single array and vertex buffer.
|
2016-02-21 22:54:55 -05:00 |
|
Thomas Harte
|
574985f9a2
|
Fixed interlaced timing; switched to a more robust detector for horizontal sync; eliminated some test logging.
|
2016-02-20 20:29:40 -05:00 |
|
Thomas Harte
|
00f414d757
|
Made an attempt to reintroduce interlacing and screen modes with gaps. Something's wrong with synchronisation though, so most likely I'm outputting a bad signal.
|
2016-02-20 17:32:51 -05:00 |
|
Thomas Harte
|
68992a62f9
|
Switched to a subtler to out-of-band syncs.
|
2016-02-20 00:16:07 -05:00 |
|
Thomas Harte
|
1954f7bcbd
|
Got back to a stable image, at least when staying in a mode. Which is what I was trying to fix. Hmmm.
|
2016-02-19 23:41:09 -05:00 |
|
Thomas Harte
|
570d88a876
|
Added a simple metric for measuring surprise. Which will hopefully allow me to reimplement PAL/NTSC auto-selection for the Atari 2600.
|
2016-02-18 23:22:06 -05:00 |
|
Thomas Harte
|
ce3c098c28
|
Widened beam a little, moved to a linear approximation of age across scans, cut number of stored frames.
|
2016-02-16 21:48:09 -05:00 |
|
Thomas Harte
|
b261e86c62
|
Reintroduced lateral as a parameter in CRT drawing, to simulate a rounded raster.
|
2016-02-16 20:37:04 -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 |
|