Thomas Harte
79707a3c66
Improves filtering slightly, and ensures coefficients are always set when needed.
2019-02-26 22:35:55 -05:00
Thomas Harte
694783efe9
Brings S-Video inside the group that filters luminance.
...
Thereby revealing some sort of error in offset selection.
2019-02-26 22:27:40 -05:00
Thomas Harte
68c5474e36
Reintroduces basic filtering for RGB mode (and introduces it for monochrome composite).
2019-02-26 22:21:49 -05:00
Thomas Harte
2f491b5be1
Reintroduces fragment snapping for composite colour sampling.
...
Thereby uncovers some sort of slightly-off recording of scan lines. On the Apple II, individual scans reach the ScanTarget at a density of exactly 0.25 colour cycles per pixel. So that timing information propagates exactly. But the whole lines that are composed via ::announce end up trying to fit 0.250154 colour cycles per pixel. Which creates a phase error as the display progresses from left to right.
This will need to be resolved in order to be able to fix the Apple II's intended colour phase. But, also, it's probably what was wrong with the Oric. And, quite possibly, why the single-step shader didn't work.
2019-02-24 13:39:14 -05:00
Thomas Harte
6d76b7cd94
Attempts to ensure proper colour output during alternating PAL lines.
2019-02-17 21:50:15 -05:00
Thomas Harte
ec8f1157c8
Corrects S-Video output.
2019-02-12 19:31:12 -05:00
Thomas Harte
037cbd534e
Corrects phase error in chrominance separation.
2019-02-12 19:24:28 -05:00
Thomas Harte
2fa4c59523
Correction: use the QAM texture for colours.
2019-02-12 18:42:28 -05:00
Thomas Harte
cda0a2de79
Establishes QAM colour buffer lookups within the composite colour path.
...
Subject to errors in channel scaling and absolute position.
2019-02-10 23:02:31 -05:00
Thomas Harte
008f50832c
Fixed: the two shaders that use a common input array should use common bindings.
2019-02-10 22:39:24 -05:00
Thomas Harte
c94acb1ca2
With a little more debug logging, discovered an issue with incrementing by four.
2019-02-09 22:45:20 -05:00
Thomas Harte
d341f98b09
Corrects horizontal scale.
2019-02-09 18:52:43 -05:00
Thomas Harte
e35a3ab566
Ensures proper uniforms and varyings for the qam_separation_shader.
2019-02-09 18:35:14 -05:00
Thomas Harte
1cd6d58f17
Restores S-Video through line, as monochrome.
2019-02-09 17:13:43 -05:00
Thomas Harte
eecd4417e7
Bites the bullet and accepts that an additional texture will be useful for QAM separation.
2019-02-09 16:54:31 -05:00
Thomas Harte
798cc58f76
Simplifies the composite colour shader no longer to handle colour.
2019-02-05 19:22:35 -05:00
Thomas Harte
e5f75b5df2
Resolves repetition between svideo_sample and composite_sample.
2019-02-03 22:09:16 -05:00
Thomas Harte
caf72afcb4
Switches to a seven-point scheme, to determine whether falsely-shared luminance is at fault.
...
It doesn't seem to be, alas.
2019-01-31 21:19:30 -05:00
Thomas Harte
5002290428
Makes consistent use of textureLod rather than texture.
2019-01-26 22:05:15 -05:00
Thomas Harte
b6a4a7e0a5
This is no longer TODO.
2019-01-25 22:47:15 -05:00
Thomas Harte
85ad490089
Offers a less error-prone route to attribute binding.
2019-01-25 21:56:55 -05:00
Thomas Harte
74e1a9a621
Declines improper use of offset within loops and adds missing header.
2019-01-25 20:14:53 -05:00
Thomas Harte
ae0bc7e7aa
Calculates sampling offsets up front.
2019-01-23 20:53:10 -05:00
Thomas Harte
a8acadbe13
Gives the shader builders freer rein over what to use as inputs, and turns angles into a varying.
...
All dropping out during the never-ending diagnosis at play here.
2019-01-22 22:20:12 -05:00
Thomas Harte
a6683cb9b8
Avoids scaling luminance prior to extracting chrominance.
2019-01-17 20:52:33 -05:00
Thomas Harte
d593796dae
Reintroduces less-filtered black and white video where there's no colour burst.
2019-01-16 22:22:29 -05:00
Thomas Harte
6c49953115
Returns gamma correction, and corrects Amstrad CPC brightness.
2019-01-14 22:56:08 -05:00
Thomas Harte
bb03d2f2ad
Removes redundant enumeration.
2019-01-13 23:07:50 -05:00
Thomas Harte
7aec5be61a
Cleans up and simplifies shader creation.
2019-01-13 22:49:01 -05:00
Thomas Harte
e89e55a9bb
Attempts to factor actual composite amplitude into output.
2019-01-13 14:45:17 -05:00
Thomas Harte
7c2c243985
Corrects sample spacing, and removes a lot of detritus.
2019-01-12 18:36:54 -05:00
Thomas Harte
25a1f23fc0
Takes a first shot at re[re,re]-implementing composite colour decoding.
2019-01-12 17:59:24 -05:00
Thomas Harte
27541196cc
Corrects Luminance8Phase8 and PhaseLinkedLuminance8 composite encodings.
2019-01-11 22:46:50 -05:00
Thomas Harte
5d9521fcb9
Advances back to a semi-complete monochrome composite output.
...
i.e. composite phase and amplitude is ostensibly flowing to its new destination.
2019-01-11 22:02:15 -05:00
Thomas Harte
028e530232
Shunts output shader to its proper place.
2019-01-06 22:59:14 -05:00
Thomas Harte
906a2ff6eb
Switches to using clock times for buffer merging and output.
2019-01-06 18:47:01 -05:00
Thomas Harte
46d756d298
Starts towards a flattening of the intermediate video processing.
...
Immediate issue: using x position to index into a bitmap sampled at the input data rate doesn't allow for the disconnection between input rate and output speed provided by the flywheels.
2019-01-05 18:11:39 -05:00
Thomas Harte
fd0ffc7085
Attempts an initial flattening of the pipeline, seemingly losing all output.
2019-01-01 21:02:21 -05:00
Thomas Harte
a25470ee41
Permits tweaking of PhaseLinkedLuminance8 sampling offset.
2018-11-29 16:29:28 -08:00
Thomas Harte
fd579a019b
Introduces a new scan source data type, motivated by the reasoning used by the Oric.
...
Specifically: it'll allow PCM sampling of the potentially arbitrary composite generation logic of various machines.
2018-11-28 20:40:22 -08:00
Thomas Harte
d45c2a1f28
Settles, at least for now, on 15-tap notch filtering.
2018-11-26 22:34:31 -05:00
Thomas Harte
f3174069fa
Attempts a linear comb filter for YC separation, plus post-separation Y filtering.
2018-11-25 21:54:12 -05:00
Thomas Harte
76656fab23
Applies harsher filtering.
2018-11-24 22:39:53 -05:00
Thomas Harte
cf49603a9e
Makes first reintroduction of colour composite decoding.
2018-11-24 22:30:39 -05:00
Thomas Harte
6c92853461
Corrects monochrome composite generation.
2018-11-24 21:55:15 -05:00
Thomas Harte
6a62cf9146
Corrects shader generation for S-Video input to S-Video output.
2018-11-24 21:40:34 -05:00
Thomas Harte
4fa6bc0ad1
Corrects S-Video decoding for most machines.
...
Ironically, that being those other than luminance/chrominance input machines. Further investigation required.
2018-11-24 21:30:09 -05:00
Thomas Harte
95685749ad
Attempts fully to implement the S-Video pipeline, without success.
2018-11-24 18:51:07 -05:00
Thomas Harte
d7c0f0c804
Switches to an ordinary sampler for scan processing.
2018-11-24 18:03:44 -05:00
Thomas Harte
6b42b92930
Kills CRTOpenGL.cpp and simplifies shader output very slightly.
2018-11-24 17:37:58 -05:00
