Thomas Harte
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00e3ad9b04
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Added a bit more ceiling for lowpass filtering on constrained machines.
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2016-10-10 07:51:01 -04:00 |
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Thomas Harte
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e53455a936
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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?
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2016-10-07 16:56:34 -04:00 |
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Thomas Harte
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dab3580111
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Experimental: can I afford a lower sampling rate if there's a low-pass filter in effect?
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2016-08-22 22:18:05 -04:00 |
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Thomas Harte
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1541273785
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Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
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2016-08-21 18:13:31 -04:00 |
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Thomas Harte
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c783090980
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It turns out that the Vic has a 1.6Khz low-pass filter. So added that.
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2016-08-21 12:13:41 -04:00 |
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Thomas Harte
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fef316932f
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Moved opening bracket appropriately.
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2016-07-04 21:14:28 -04:00 |
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Thomas Harte
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8db44eed3e
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Added a default implementation of Speaker::skip_samples.
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2016-07-04 20:48:27 -04:00 |
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Thomas Harte
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2bc87ee095
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Merge branch 'master' of github.com:TomHarte/CLK
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2016-07-01 16:28:18 -04:00 |
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Thomas Harte
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eefd0c17b6
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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.
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2016-07-01 16:27:45 -04:00 |
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Thomas Harte
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ed8f4d0476
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Added some minor additional bits of documentation.
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2016-06-30 08:46:29 -04:00 |
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Thomas Harte
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4ac619f569
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glClientWaitSync appears to be a busy wait, at least on my machine. But why wait indefinitely anyway?
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2016-06-29 21:32:47 -04:00 |
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Thomas Harte
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ff53accca0
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Demonstrated that issue is coloured borders, made a guess as to buffer exhaustion, upped limits as a temporary fix.
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2016-06-29 21:16:34 -04:00 |
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Thomas Harte
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2bd71e7e9b
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.reset is the more normal way to reassign a unique_ptr.
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2016-06-23 20:52:44 -04:00 |
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Thomas Harte
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c18cc4c8f5
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It appears the Vic's output is sine-ish, after all. Also adjusted centre of display, simultaneously adding some validation on that.
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2016-06-14 07:29:35 -04:00 |
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Thomas Harte
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fcf4b14344
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Extended to allow floating-point sampling rates. Which makes sense.
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2016-06-13 19:30:41 -04:00 |
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Thomas Harte
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2992183aae
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Switched to a lookup table for phase, temporarily in YUV colour space, probably. Working on it.
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2016-06-12 14:39:17 -04:00 |
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Thomas Harte
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68a8851c52
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Increased parallelism, allowing a simplification in the GL view.
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2016-06-02 22:29:09 -04:00 |
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Thomas Harte
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1e0fcbbee8
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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.
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2016-06-01 19:53:16 -04:00 |
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Thomas Harte
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5c4f35e13f
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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.
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2016-05-31 21:23:44 -04:00 |
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Thomas Harte
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4ad074fc78
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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.
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2016-05-16 19:55:56 -04:00 |
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Thomas Harte
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9d92ad659f
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Established the basic timing loop, albeit without clocking delays yet.
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2016-05-16 08:01:29 -04:00 |
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Thomas Harte
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00a2b42080
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Made thread-safe.
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2016-05-15 15:19:52 -04:00 |
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Thomas Harte
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091516e3cb
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The semantics might need better exposition but: fixed UniformXfv calls plus matrix calls, documented new semantics on all setters.
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2016-05-15 14:59:59 -04:00 |
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Thomas Harte
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328fabcd10
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Ensured values aren't dangling pointers.
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2016-05-14 18:15:10 -04:00 |
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Thomas Harte
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492dc7ccbf
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Made an attempt to queue uniform changes until the next call to bind. That's to allow usage from other threads.
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2016-05-14 18:06:55 -04:00 |
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Thomas Harte
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30f335fa35
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Switched pervasively to using the named slot uniform setters on Shader.
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2016-05-13 22:08:32 -04:00 |
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Thomas Harte
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8d52765f40
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Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
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2016-05-12 22:22:24 -04:00 |
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Thomas Harte
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6d65bc9b3a
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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.
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2016-05-11 22:11:01 -04:00 |
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Thomas Harte
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4b3c4082d2
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These functions appear correctly to model the NTSC and PAL palettes; the CRT's attempt to switch function doesn't work properly yet though.
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2016-05-11 21:07:18 -04:00 |
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Thomas Harte
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a8ce021136
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Fixed comment.
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2016-05-10 19:59:03 -04:00 |
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Thomas Harte
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0d2d6a452d
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Fixed some dangling buffer management issues.
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2016-05-10 19:55:34 -04:00 |
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Thomas Harte
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b6d2c8cb63
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Switched to instaced drawing for source[/intermediate] runs too, reducing that data transfer footprint by 50%.
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2016-05-10 19:50:12 -04:00 |
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Thomas Harte
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7369139f7e
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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.
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2016-05-10 19:14:57 -04:00 |
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Thomas Harte
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47ae402f7e
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Introduced a shorthand for setting up array attributes.
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2016-05-10 19:11:48 -04:00 |
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Thomas Harte
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257420b0f7
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Fixed potential output error if buffer top were hit; clarified buffer size constants.
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2016-05-10 19:04:03 -04:00 |
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Thomas Harte
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309313c470
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Update CRTConstants.hpp
Lack of data duplication means this storage can be smaller.
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2016-05-10 10:49:48 -04:00 |
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Thomas Harte
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1d0bcb416d
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Dropped the size per output run back down to 8 bytes.
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2016-05-10 07:47:47 -04:00 |
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Thomas Harte
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b0f0315f12
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Fixed: this now implements 12-byte instancing for output runs.
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2016-05-10 07:30:12 -04:00 |
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Thomas Harte
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86dab3a5d6
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Quickest first attempt to switch to instancing for the output array. Texture coordinates seem to be off.
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2016-05-10 07:23:47 -04:00 |
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Thomas Harte
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daec21d3d8
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Found and fixed off-by-one error. Display should now be completely fixed.
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2016-05-09 21:14:59 -04:00 |
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Thomas Harte
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59d766b325
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Rationalised buffer sizes.
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2016-05-09 19:17:03 -04:00 |
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Thomas Harte
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7e2bd78891
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With an eye towards instancing, moved away from circular buffers.
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2016-05-09 19:14:30 -04:00 |
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Thomas Harte
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ad734f341f
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Attempted fully to perfect memove, albeit that it's not affecting either current machine.
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2016-05-09 07:44:05 -04:00 |
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Thomas Harte
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8eb058064c
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Fixed: ensured that the attempt to plot a misplaced write occurs correctly.
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2016-05-09 07:42:26 -04:00 |
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Thomas Harte
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e6a7161e87
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Made some minor corrections on the copyback of misplaced write data.
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2016-05-09 07:39:57 -04:00 |
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Thomas Harte
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45af963b9a
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Moved more of the circular logic inside getCircularRanges in order to eliminate one more potential source of error.
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2016-05-09 07:34:37 -04:00 |
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Thomas Harte
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cec9ad0dc6
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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.
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2016-05-09 07:02:12 -04:00 |
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Thomas Harte
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a82fa31370
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Switched back to broad locking for CRT updates. To eliminate one more thing.
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2016-05-09 06:58:26 -04:00 |
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Thomas Harte
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47302de23a
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Switched to simpler storage for _image.
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2016-05-08 21:11:56 -04:00 |
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Thomas Harte
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1f02c5df88
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Tidied up some further loose ends.
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2016-05-08 20:58:18 -04:00 |
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