Thomas Harte
02f9cada43
Communicates the colour subcarrier frequency, and uses it to pick a buffer width.
2018-11-13 18:33:44 -05:00
Thomas Harte
2adf3d353e
Subtracts retrace periods from output scale.
2018-11-12 20:20:09 -05:00
Thomas Harte
be12d78c83
Corrects vertical event announcement, and adjusts namespaces for OpenGL primitives.
2018-11-11 15:11:32 -05:00
Thomas Harte
6d277fecd5
Makes ScanTarget a little more communicative and orthogonal.
2018-11-10 19:52:57 -05:00
Thomas Harte
55da1e9c0f
Simplifies semantics a little and starts accepting a single buffer of pixel data.
2018-11-06 22:23:38 -05:00
Thomas Harte
9799aa0975
Completes documentation and rounds out implementation.
2018-11-04 22:17:33 -05:00
Thomas Harte
1effb97b74
Reintroduces colour phase acquisition from the colour burst.
2018-11-04 21:57:46 -05:00
Thomas Harte
eb28095041
Ensures proper accumulation and reporting of colour phase across lines.
2018-11-04 21:44:22 -05:00
Thomas Harte
014da41471
Ensures scan positions are communicated with a specified range, and switches manner of pixel clock communication.
2018-11-04 21:06:25 -05:00
Thomas Harte
0446e350d3
Resolves sizing of texture coordinates, and improves constness slightly.
2018-11-03 23:51:26 -04:00
Thomas Harte
05fb7db147
Reduces CRT chattiness.
2018-11-03 23:47:41 -04:00
Thomas Harte
f6562de325
Possibly adds enough for the Electron and ZX80 to start outputting dummy lines.
...
Let's see!
2018-11-03 23:40:39 -04:00
Thomas Harte
b40211d2c0
Starts to bend 'CRTMachine' to a world farther from owning the GPU relationship.
2018-11-03 21:54:25 -04:00
Thomas Harte
da4d883321
Adds first, incomplete attempts to talk to a ScanTarget from the CRT.
...
Does away with the hassle of `unsigned` while I'm here; that was a schoolboy error.
2018-11-03 19:58:44 -04:00
Thomas Harte
373820f080
Attempts to establish interface to decouple scan output from generation.
...
Restores some functionality that had dropped out in the interim: diagonal scans, decoupling of scan scaling from timing of the composite subcarrier.
2018-10-30 21:50:35 -04:00
Thomas Harte
4701aa149a
Adds first draft of an interface to separate CRT logic from the GPU-side stuff.
2018-10-29 22:08:17 -04:00
Thomas Harte
7c65cfd932
Adds default values for WriteArea.
2018-10-21 21:18:54 -04:00
Thomas Harte
e582b4c8ca
Eliminates some dangling references to iCoordinate.
2018-09-13 19:35:15 -04:00
Thomas Harte
a7508bc2ae
Switching explicitly to one pixel per sample eliminates the need for a bookender.
2018-09-12 20:11:17 -04:00
Thomas Harte
a38639d099
Eliminates the concept of an iCoordinate.
...
Real-life precision appears not to support the idea of sub-sample pixel storage.
2018-09-12 20:05:39 -04:00
Thomas Harte
d73d3b4480
Adds a left border to complement the right.
2018-09-09 21:52:48 -04:00
Thomas Harte
6e9cd5cb21
Resolves over-brightness created by over-composition.
2018-09-09 20:30:43 -04:00
Thomas Harte
c73445199c
Eliminates a couple of instances of manual memory management.
2018-09-09 20:29:58 -04:00
Thomas Harte
4c8781c762
Increases documentation slightly.
2018-09-09 17:17:38 -04:00
Thomas Harte
3c33ccd730
Eliminates various blank lines.
2018-07-28 10:52:34 -04:00
Thomas Harte
2832792fed
Corrects improper use of doubles.
2018-07-16 21:55:19 -04:00
Thomas Harte
efa45b9504
Adds a right gutter to clip persistence errors.
...
Also uncovers and corrects a long-standing centring error.
2018-07-16 21:52:31 -04:00
Thomas Harte
c9451a5382
Introduces an object for drawing OpenGL rectangles.
2018-07-14 17:42:23 -04:00
Thomas Harte
00cb4d26b3
Corrects typo.
2018-07-11 19:52:55 -04:00
Thomas Harte
c97c5fa03a
[Re-]recalibrates CRT retrace period and affected view windows.
...
In the hope of moving the CPC closer to the real CTM visible area.
2018-07-05 22:07:18 -04:00
Thomas Harte
283ed8dbae
Increases permissible error in scanline length.
2018-06-19 22:24:11 -04:00
Thomas Harte
b899a22c7d
Hides persistent low-part colour channel errors.
2018-06-14 20:40:27 -04:00
Thomas Harte
14a2e470e4
Corrects overbrightness issue with autogeneration of PAL composite from an RGB source.
2018-06-14 18:25:48 -04:00
Thomas Harte
41dcf1de42
Increases blur again just a little more, after consideration of interlaced output.
2018-06-14 18:25:04 -04:00
Thomas Harte
0c65385c82
Undoes older interpretation of alternating phase.
...
I now understand, hopefully, that it's only the phase of the second colour component that alternates. That has the pointwise effect of reversing the colour signal. Hence the effect of phase errors cancelling themselves out up on successive lines up to a point.
2018-06-14 18:24:32 -04:00
Thomas Harte
f05ee525cb
Tweaks blurriness downward.
2018-06-14 17:41:17 -04:00
Thomas Harte
35e84ff1a8
Corrects NTSC quadrature phase.
2018-05-31 21:40:46 -04:00
Thomas Harte
7226d8d4f7
Eliminates all instances of µ.
2018-05-13 15:46:14 -04:00
Thomas Harte
5d6b5d9f10
Eliminates all emdashes in cross-platform code.
2018-05-13 15:34:31 -04:00
Thomas Harte
0b771ce61a
Removes all instances of the copyright symbol.
2018-05-13 15:19:52 -04:00
Thomas Harte
bd27f61a03
Corrects various impossible-in-real-life compiler warnings.
2018-05-12 18:02:16 -04:00
Thomas Harte
f4097290c2
Made various corrections following a quick for-loop constness audit.
2018-04-30 22:23:57 -04:00
Thomas Harte
6547560e52
Gives the CRT the ability to move iCoordinate multiplication outside of the fragment loop.
...
That resolves precision issues, as were plaguing the Apple II.
2018-04-18 19:29:03 -04:00
Thomas Harte
1c605d58e3
Removes the CRT requirement for an integral relationship between cycles and samples.
2018-04-16 20:00:56 -04:00
Thomas Harte
5782cab2a0
Minor whitespace fix.
2018-04-05 21:15:25 -04:00
Thomas Harte
ec72fb3baf
Ensures the SVideo shader gets all proper enable_vertex_attribute_with_pointers.
2018-04-05 21:12:28 -04:00
Thomas Harte
d061ea232b
Ensures no attempt to compile an SVideo shader without appropriate source.
2018-04-04 19:01:01 -04:00
Thomas Harte
912791d3d4
Causes the s-video path correctly to function.
2018-03-30 18:24:18 -04:00
Thomas Harte
163a61dd63
Corrects SVideo-as-composite output; the Atari and Vic-20 now both supply svideo.
2018-03-30 13:16:18 -04:00
Thomas Harte
207d462dbf
Attempts to provide an implementation of SVideo support.
2018-03-30 12:41:20 -04:00
