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870 Commits

Author SHA1 Message Date
Thomas Harte
bee0d09877 Splits display update and draw functions. 
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
d97348dd38 Eliminates dangling uses of printf. 2019-03-02 18:07:05 -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
db078c7363 Minor tweak: don't start counting phase from zero. 
This should ensure no first pixel issues resulting from clamping.
 2019-02-27 18:51:51 -05:00
Thomas Harte
6b4f6971de Disables upper limit on frame buffer size. 
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. 
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. 
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. 
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
2f9e825728 Forces the outward-communicated composite angles to have the same precision as the cycle counts. 
While also making a minor improvement to output range. Which is neither here nor there.
 2019-02-24 14:29:43 -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
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
9f6956bd87 Awards default values to Scan, to appease GCC 7.3. 2019-02-19 21:40:42 -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
77bebd4a65 Accounts for periods near an expected sync after a sync actually occurred. 2019-02-12 22:30:40 -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. 
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. 
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. 
In favour of additional copying, but I still think this is safer.
 2019-01-25 22:54:23 -05:00
Thomas Harte
b6a4a7e0a5 This is no longer TODO. 2019-01-25 22:47:15 -05:00
Thomas Harte
c87994336c Switches the Shader class to using LOG. 2019-01-25 22:45:47 -05:00
Thomas Harte
85ad490089 Offers a less error-prone route to attribute binding. 2019-01-25 21:56:55 -05:00
Thomas Harte
a321ff3037 Adds some default values. 2019-01-25 20:21:24 -05:00
Thomas Harte
68d6feaa03 Adds missing includes and gets more explicit about exceptions. 2019-01-25 20:19:50 -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
6a43fc5df0 Resolves a GCC-troubling circular declaration issue vs. atomic.h. 2019-01-25 19:30:39 -05:00
Thomas Harte
312f38906b Corrects two improper include paths. 2019-01-25 19:19:23 -05:00
Thomas Harte
20b4896940 Eliminates the dead stuff of CRTConstants.hpp. 2019-01-25 19:11:39 -05:00
Thomas Harte
6a93d2d006 Corrects some minor spaces-instead-of-tabs errors. 2019-01-24 22:59:03 -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
727f2e2ba0 Updates to the ScanTarget world. 2019-01-17 22:28:02 -05:00
Thomas Harte
a6683cb9b8 Avoids scaling luminance prior to extracting chrominance. 2019-01-17 20:52:33 -05:00
Thomas Harte
5ceb711bd3 Allows amplitude to be specified even for a default colour burst. 2019-01-17 20:47:42 -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
ef0dbc2a41 Undoes hard-coding of target framebuffer and display gamma. 2019-01-15 21:33:30 -05:00
Thomas Harte
6c49953115 Returns gamma correction, and corrects Amstrad CPC brightness. 2019-01-14 22:56:08 -05:00
Thomas Harte
55290f4dad Attempts a fix of frame_was_complete_ logic, to try to eliminate black flashes. 2019-01-14 21:42:45 -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
c392c819c1 Switches to using the announce is_visible flag to spot line ends. 2019-01-06 13:37:34 -05:00
Thomas Harte
e9d9ff0da0 Enhances ScanTarget to provide additional timing information. 2019-01-05 23:09:17 -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
557a2a0ddf Moves pipeline setup into draw(), where there'll definitely be an OpenGL context. 2018-11-29 19:41:54 -08:00
Thomas Harte
6be46ae921 Mostly restores Atari 2600 output. PAL colours need work. 2018-11-29 18:26:05 -08:00
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
64465f97b6 Starts towards reintroducing the proper mechanisms for selecting a display type at runtime. 2018-11-28 17:53:33 -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
cd1e796093 Attempts to add clearing of the destination framebuffer too. 2018-11-24 23:31:56 -05:00
Thomas Harte
dd4af4f0df Removes dead files. 2018-11-24 22:40:06 -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
Thomas Harte
538c57664f Establishes attribute bindings to allow multiple shaders to use the same vertex array. 2018-11-24 16:06:26 -05:00
Thomas Harte
a66a20f7fe Manages to get a brilliant white out of the new pipeline. 2018-11-23 22:54:52 -05:00
Thomas Harte
d4ac79b0af Attempts to introduce a full-on processing pipeline, in theory putting me two shaders away from completion. 
Well, subject to finding the last flashing bug and updating the multimachine, anyway.
 2018-11-23 22:34:38 -05:00
Thomas Harte
a5a3769a0f Reaches for conceptual const correctness. 2018-11-23 22:33:28 -05:00
Thomas Harte
ee89be6730 Removes many stray spaces. 2018-11-23 22:32:32 -05:00
Thomas Harte
b9aca39eb0 Reintroduces Vic-20 output. 
Resolving errors in shader generation while I'm here.
 2018-11-22 22:43:42 -05:00
Thomas Harte
c0454ff101 Corrects chrominance scale. 2018-11-22 18:18:16 -05:00
Thomas Harte
a697a2e4f6 Attempts to complete all input processing — an RGB, S-Video or composite input buffer is now produced. 
... for all input data types.
 2018-11-22 17:20:31 -05:00
Thomas Harte
396cf72029 Renames OutputType as DisplayType and promotes it to a scan target modal. 2018-11-22 14:36:46 -05:00
Thomas Harte
bfe9704829 Reintroduces respect of each machine's nominated visible area. 2018-11-22 13:22:04 -05:00
Thomas Harte
43ee540233 Avoids race condition on .is_first_in_frame 2018-11-21 18:27:04 -05:00
Thomas Harte
38ffc4fdb3 Invalidates the stencil buffer upon buffer resizes. 2018-11-20 19:51:11 -05:00
Thomas Harte
a70991d50e Eliminates minor gap. 2018-11-19 23:35:12 -05:00
Thomas Harte
4c00456166 Makes first attempt to draw only new lines. 2018-11-19 23:25:26 -05:00
Thomas Harte
26219213d7 Marginally increases scan size. 2018-11-18 23:03:56 -05:00
Thomas Harte
97c5ee6c0a Corrects stencil buffer creation, and edges towards using it for [guaranteed] full-screen decay. 2018-11-18 22:22:43 -05:00
Thomas Harte
75bc0e451d Reintroduces the accumulation texture. 
Disables automatic clearing of the texture target, as the profiler indicates the vector instantiation to be a huge time sink.
 2018-11-18 21:39:11 -05:00
Thomas Harte
6496b6313c Attempts to fix random stray noise lines. 2018-11-17 23:27:25 -05:00
Thomas Harte
8f05560dd7 Corrects right-edge bookending. 2018-11-17 17:46:57 -05:00
Thomas Harte
06c0c64c1a Shifts intermediate buffer sampling into the middle of each pixel row. 2018-11-17 17:31:32 -05:00
Thomas Harte
c173777d12 Extends TextureTarget so that targets can be created with a one-bit stencil. 2018-11-17 15:51:12 -05:00
Thomas Harte
16dfeb3fc8 Discards empty lines, yet makes some attempt at restoring transparency. 
The two things conflict more than a little, so work to do.
 2018-11-15 21:51:27 -05:00
Thomas Harte
5a31891048 Returns Amstrad CPC output. 
Which is probably it until I get some more composite processing back in.
 2018-11-15 21:32:22 -05:00
Thomas Harte
8b37496447 Restores video output to the Master System. 2018-11-15 21:21:54 -05:00
Thomas Harte
8f6664f0d7 Starts towards picking an input shader based on data type and pipeline. 2018-11-15 21:02:46 -05:00
Thomas Harte
8a699b6072 Kills setup_output definitively, saving some indirection. set_scan_target takes its place. 2018-11-14 21:52:57 -05:00
Thomas Harte
87df8b9e85 Makes an attempt at pre-emptive line buffer clearing. 2018-11-14 21:19:14 -05:00
Thomas Harte
91b19c5c70 Adds bookending, and finally kills the TextureBuilder. Farewell. 2018-11-14 20:49:06 -05:00
Thomas Harte
0487580a1a Corrects initial state of is_drawing_ and expands lines to full display. 2018-11-14 20:10:38 -05:00
Thomas Harte
3dca836571 Ensures no overflow, and adds a couple of consts. 2018-11-14 20:09:57 -05:00
Thomas Harte
6ba02c44d0 Better binds buffer sizes. 2018-11-13 23:08:51 -05:00
Thomas Harte
bf3ab4e260 Proceeds as drawing to the unprocessed line buffer and drawing from it. 
Very, very slowly, and without yet clearing.
 2018-11-13 21:15:33 -05:00
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
654a19ea15 Switches back to working on the scan shaders. 
Pixels from the emulated machine are now starting to appear.
 2018-11-12 22:52:26 -05:00
Thomas Harte
ecb5504bd1 Switches enable_vertex_attribute_with_pointer to silent failure (versus glGetError). 2018-11-12 22:51:44 -05:00
Thomas Harte
2adf3d353e Subtracts retrace periods from output scale. 2018-11-12 20:20:09 -05:00
Thomas Harte
3045e85004 Ensures redraws when resizing; declines to busy wait otherwise. 2018-11-12 20:15:38 -05:00
Thomas Harte
e9d1afd515 Appears to demonstrates that the line buffer is approximately working. 2018-11-12 19:10:48 -05:00
Thomas Harte
833ab7945b Slow steps towards switching to line output. 2018-11-12 18:56:54 -05:00
Thomas Harte
0af1d668a6 Takes a first step towards generality, and thereby starts submitting lines. 2018-11-12 18:47:55 -05:00
Thomas Harte
0ac62e3805 Flips and properly sizes output scans. 2018-11-12 18:28:09 -05:00
Thomas Harte
938d09f34a Corrects scan outline generation. 2018-11-12 18:23:45 -05:00
Thomas Harte
dce52d740d Finally gets some pixels back on screen. 
For now, just the raw scans, direct to the framebuffer, with no intermediate processing. But it seems to prove that at least some of the proper data is reaching the GPU.
 2018-11-11 23:23:42 -05:00
Thomas Harte
3ae333fa84 Edges further towards reviving the shaders. 2018-11-11 21:41:13 -05:00
Thomas Harte
d5af1f3948 Removes some migrated work. 2018-11-11 16:22:14 -05:00
Thomas Harte
0ba3ae53ab Connects up the necessary recording to use intermediate composite buffers. 2018-11-11 15:20:18 -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
b70227ac1b Ensures proper write area locations end up in the scans. 2018-11-10 21:10:33 -05:00
Thomas Harte
6d277fecd5 Makes ScanTarget a little more communicative and orthogonal. 2018-11-10 19:52:57 -05:00
Thomas Harte
491817d85c Corrects allocation error and begins submitting raw textures. 2018-11-08 23:02:36 -05:00
Thomas Harte
20faf4e477 Adds submission of scans to the GPU. 2018-11-08 22:21:11 -05:00
Thomas Harte
4fe5c7c24e Conspires to handle multithreading side of things in a lockless fashion. 
At least on x86-64.
 2018-11-08 21:57:28 -05:00
Thomas Harte
36bf640c6f Acts as if it is going to submit scans, at least. 2018-11-07 22:53:46 -05:00
Thomas Harte
7881e40e0b Shuffles the OpenGL primitives into their own collection. 2018-11-07 19:11:01 -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
7eeefd2602 Ensures LOGs look like statements even in release builds. 2018-10-22 22:37:11 -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
5ab4cfee84 Factors out repeated hex-size setting. 2018-06-21 19:27:54 -04:00
Thomas Harte
a9eb0d02c6 Returns sanity to 8272 logging. 2018-06-20 23:02:32 -04:00
Thomas Harte
283ed8dbae Increases permissible error in scanline length. 2018-06-19 22:24:11 -04:00
Thomas Harte
adca862166 Finally makes an initial pass at logging macros. 2018-06-18 22:37:19 -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
074b4c3500 Eliminates repeating cause of misuse. 
Raises the question as to whether an async task queue should be required at construction; let's see how things look as the project develops.
 2018-04-21 15:01:18 -07:00
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