Thomas Harte
86a6b04d4a
Begins attempts to keep track of display metrics.
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i.e. a system that can both make smart decisions about when to use a lower resolution, and hopefully allow some sort of flywheel-esque horizontal retrace synchronisation. And possibly some raster beam chasing?
2019-03-04 21:54:50 -05:00
Thomas Harte
641e349f33
Switches to an 8bpp stencil, for Nvidia compatibility.
2019-03-03 20:38:24 -05:00
Thomas Harte
ccdeb3fbc8
Ensures draw is a no-op prior to pipeline setup.
2019-03-03 15:04:14 -05:00
Thomas Harte
bee0d09877
Splits display update and draw functions.
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On the Mac, draw is now called without an update for resizing events, and
anything else requested by AppKit. In all other cases — including from
the SDL version — both are called as if they were still a single function.
2019-03-02 19:33:28 -05:00
Thomas Harte
d122535a65
Unifies the OpenGL screenshot code and corrects it for arbitrary alignment.
2019-02-27 21:05:02 -05:00
Thomas Harte
6b4f6971de
Disables upper limit on frame buffer size.
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Filtering is sufficiently imperfect as to make this justifiable only when performance requires it. So I need a test for that. Marked as TODO.
2019-02-26 22:39:07 -05:00
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.
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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
cd055a0298
Introduces an upper bound on output resolution, and resolves full-screen clear colour.
2019-02-25 22:07:48 -05:00
Thomas Harte
8f2abab0d9
Ensures texture targets are initially clear.
2019-02-25 21:55:14 -05:00
Thomas Harte
4c5dee866b
Ensures a proper black fill for Luminance8Phase8 input data.
2019-02-25 21:32:15 -05:00
Thomas Harte
7bb90c78d9
Resolves out-of-bounds initial condition whenever this loop began with start_line = 2047.
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This, I believe, was the remaining cause of screen flashes.
2019-02-24 19:50:19 -05:00
Thomas Harte
a6e61ef83b
Reverts the clear colour to black.
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The change was related to debugging; it was not intentionally committed.
2019-02-24 14:36:08 -05:00
Thomas Harte
c775a6c0f8
Introduces but disables a couple of bits of logging that might be helpful again in the future.
2019-02-24 14:30:39 -05:00
Thomas Harte
2f491b5be1
Reintroduces fragment snapping for composite colour sampling.
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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
de7ebead23
Ensures the line_allocation_has_failed_ condition can be exited.
2019-02-21 22:30:41 -05:00
Thomas Harte
c0c4704419
Ensures that failure to allocate a line blocks all other allocations.
2019-02-21 21:38:48 -05:00
Thomas Harte
080f949f89
Ensures OpenGL version is logged prior to any other GL calls.
2019-02-20 20:21:17 -05:00
Thomas Harte
ddf5e1632d
Ensures log memory is automatically initialised.
2019-02-18 22:08:03 -05:00
Thomas Harte
40bfde41cb
Adds an OpenGL version shout out.
2019-02-18 22:01:56 -05:00
Thomas Harte
e0751af56d
Handles the 0 return case.
2019-02-18 21:56:49 -05:00
Thomas Harte
3979faf43b
Gets more explicit about potential causes of failure.
2019-02-18 21:53:35 -05:00
Thomas Harte
878b480a44
Tidies up marginally.
2019-02-18 21:37:07 -05:00
Thomas Harte
b35b6b2ba8
Resolves a couple of missing #includes for cassert.
2019-02-18 21:29:39 -05:00
Thomas Harte
6b2e1fe62b
Makes error reporting more communicative.
2019-02-18 11:13:54 -05:00
Thomas Harte
8ecf885629
Attempts to put in better OpenGL safety rails.
2019-02-18 10:29:40 -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
7bd721f334
Resolves improper state if an end-of-frame clear is triggered by the first new line.
2019-02-17 21:49:53 -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
208ef70e31
Corrects documentation.
2019-02-12 18:55:58 -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.
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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
b3b4b7cf0c
Corrects QAM texture generation logic.
2019-02-09 17:20:13 -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
6ba1194d74
Sets a clear colour appropriate for phase-linked luminance clearing.
2019-02-03 22:33:04 -05:00
Thomas Harte
e5f75b5df2
Resolves repetition between svideo_sample and composite_sample.
2019-02-03 22:09:16 -05:00
Thomas Harte
b75ad3def2
Updates the multimachine for the ScanTarget world.
2019-02-03 15:07:22 -05:00
Thomas Harte
caf72afcb4
Switches to a seven-point scheme, to determine whether falsely-shared luminance is at fault.
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It doesn't seem to be, alas.
2019-01-31 21:19:30 -05:00
Thomas Harte
687e0b376e
Enhances error checking around setting of uniforms.
2019-01-31 21:17:49 -05:00
Thomas Harte
122857e5b5
Improves automatic index generation, to allow for matrices implicitly taking up to four slots.
2019-01-31 18:49:01 -05:00
Thomas Harte
5002290428
Makes consistent use of textureLod rather than texture.
2019-01-26 22:05:15 -05:00
Thomas Harte
d09ac3384f
Eliminates some old-school manual memory management.
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In favour of additional copying, but I still think this is safer.
2019-01-25 22:54:23 -05:00
