191 Commits

Author	SHA1	Message	Date
Thomas Harte	b90a487a16	Attempted to enable both monitor and television output paths in the same codebase. The television route seems to be broken. Investigation required.	2016-04-19 19:30:50 -04:00
Thomas Harte	6c9bcfa637	Got rigorous on exceptions, started working towards having a working 'composite' shader at the same time as having a working RGB shader.	2016-04-19 08:05:43 -04:00
Thomas Harte	bcc784bda9	Introduced an interface for specifying attribute bindings, taking the opportunity to document the interface and introduce exceptions.	2016-04-19 07:23:15 -04:00
Thomas Harte	9d39c14752	Nothing of substance different; main current mystery: why do old frames recur and why does other jumpiness occur? Do I need some explicit synchronistion?	2016-04-18 22:18:03 -04:00
Thomas Harte	cf55a0c423	Fixed: composite output y is now incremented upon the start of retrace, that causing it to have different values at either edge of scans.	2016-04-18 21:49:45 -04:00
Thomas Harte	9580dde3ad	Fixed left/right shuffling. Was simply failing to supply the integer version of coordinates.	2016-04-18 21:40:23 -04:00
Thomas Harte	d5bac2f04f	Spotted error was in texture target all along. This now gets as far as showing something a lot like the correct display, but precision is way off. Way off.	2016-04-18 21:32:48 -04:00
Thomas Harte	bf29c8e2bf	Fixed mismatch in television/monitor selection, ticked view for drawing concurrently, since it can, removed stray space.	2016-04-18 19:01:15 -04:00
Thomas Harte	5980f5e991	Number of taps can be specified explicitly if you desire.	2016-04-17 20:45:57 -04:00
Thomas Harte	499f7ace07	Re-enabled working video output for the Electron for the day and consolidated the rough metric I'm using to pick a number of taps for the audio filter.	2016-04-17 20:43:20 -04:00
Thomas Harte	9ede284eb6	Added blanking source runs, ensuring the rolling buffer is appropriately cleared.	2016-04-17 20:34:52 -04:00
Thomas Harte	43cae267f9	Shuffled further in an attempt to get as far as having static but incorrectly-interpreted pixel data on screen. It's not currently static. So work to do.	2016-04-17 18:08:05 -04:00
Thomas Harte	a8fbd82a3d	Made an attempt at correctly mapping to eye coordinates.	2016-04-17 17:21:24 -04:00
Thomas Harte	ece51917fa	Added first attempt at performing the first step of television output: mapping from source data to the first of the processing buffers. It's immediately obvious that my eye coordinates are off.	2016-04-17 17:17:59 -04:00
Thomas Harte	abce0ed3c4	Added setup of the source vertex array.	2016-04-17 16:17:23 -04:00
Thomas Harte	6ff9ffba6c	Switching temporarily to an attempt to draw input runs as if RGB: shader compiles, fixed a race condition on out-of-bounds accesses for the source buffer.	2016-04-17 15:51:28 -04:00
Thomas Harte	104f44f27f	Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.	2016-04-14 22:20:47 -04:00
Thomas Harte	323f1a24db	Introduced blackout period solution to vertical sync confusing horizontal sync. Need to find out whether it's accurate.	2016-04-14 20:30:45 -04:00
Thomas Harte	6a17c2992d	Introduced a compile-time configurable audio divider, set it arbitrarily to '8' for now. Discovered why my graphics aren't centred and added a TODO.	2016-04-13 22:31:59 -04:00
Thomas Harte	026ce0255f	Source runs are now captured, and that buffer appropriately reset.	2016-04-13 22:20:13 -04:00
Thomas Harte	2ea02ed127	A source array buffer is also now created, mapped, unmapped, etc.	2016-04-13 22:14:18 -04:00
Thomas Harte	04d1b65c93	Reinstated texture target creation, cut them down to merely RGB.	2016-04-12 22:48:47 -04:00
Thomas Harte	4be8053ba9	Updated documentation.	2016-04-12 22:38:49 -04:00
Thomas Harte	4d889d9c7f	Made an attempt slightly to simplify the fragment processor, at both ends.	2016-04-12 22:35:11 -04:00
Thomas Harte	fe8b0ebc7e	Tidied up a little, mostly bumping things out of just-in-time creation that I can just do well in advance.	2016-04-12 22:31:13 -04:00
Thomas Harte	069ec2e889	In search of the cause of performance issues again, excised the per-pixel sin until it can be further evaluated.	2016-04-11 23:13:54 -04:00
Thomas Harte	d100c755b7	The final line runs on a diagonal. Leave room for that.	2016-04-11 23:13:14 -04:00
Thomas Harte	7276a06cc0	Added a helper to calculate a visible rect based on output timings, used it to scale the Electron output up to the full window size.	2016-04-11 21:47:23 -04:00
Thomas Harte	e45fe43801	Removed some dead caveman debugging.	2016-04-10 23:02:34 -04:00
Thomas Harte	bdb99ba92f	Corrections back towards composite output: fixed misnamed constant, ensured the CRT doesn't write nonsense to the output buffer, ensured it grows three vertices at a time rather than six when desired. Net effect should be that the output stage is working again, with the input processing remaining to fill in.	2016-04-10 22:56:52 -04:00
Thomas Harte	8701366277	Switched horizontal sync detection back to differential, switched the Electron to an XOR-style sync output (believed to be accurate, but I need to check), fixed some latent issues around vertical sync detection.	2016-04-10 21:34:40 -04:00
Thomas Harte	fc5530b513	Realising I've managed to confuse input and output, started shift to 'source' for what 'input' was.	2016-04-10 15:58:43 -04:00
Thomas Harte	6dbd20ffde	Expanded interface to rgb_sample to eliminate its need to make assumptions about globals, used expanded interface to compact Electron data to two pixels per byte.	2016-04-05 20:32:55 -04:00
Thomas Harte	c0cd1ed89e	Made an attempt to consolidate timestamp bases to a single vector and hence to lump all geometry into one or two calls, with no repetitive setting of a uniform. I'm not sure the result is correct yet.	2016-04-04 21:57:27 -04:00
Thomas Harte	729fddea1c	Switched to integer textures, likely to simplify for most use cases.	2016-04-04 19:39:01 -04:00
Thomas Harte	3ca58b2a57	Attemted further to diminish jumpiness.	2016-03-22 22:07:30 -04:00
Thomas Harte	8cd5d40e00	Made an attempt to reduce the amount of data heading to the GPU.	2016-03-22 21:16:32 -04:00
Thomas Harte	3038704977	Attempted to introduce a lowpass filter to the graphics output, reverted 6502 optimisations as seemingly not working.	2016-03-21 22:01:25 -04:00
Thomas Harte	197cf2a834	Commented out sync; it can probably be implicit.	2016-03-20 21:42:05 -04:00
Thomas Harte	9da7716c72	Attempted to simplify threading, thereby allowing machines to be constructed within a valid GL context, and started adding appropriate GL syncs. Which all oddly drops everything to a negligible FPS. Investigation will follow.	2016-03-19 22:46:17 -04:00
Thomas Harte	aa8a192c7e	Simplified API down to their being a single texture with a specified depth.	2016-03-19 17:37:55 -04:00
Thomas Harte	4ac1f959e9	A shortcut here and a shortcut there; this allows me at least to determine whether use of a PBO gains anything.	2016-03-19 17:07:05 -04:00
Thomas Harte	5b37a651ac	Made an attemp to deal with glUnmapBuffer(GL_ARRAY_BUFFER) == GL_FALSE.	2016-03-18 21:35:52 -04:00
Thomas Harte	0b1c9fb291	Ensured I don't interrupt triangle strips for the purpose of glDrawArrays.	2016-03-18 21:28:53 -04:00
Thomas Harte	620257e29e	Switched to a client wait, as I try to figure out what's going on.	2016-03-18 21:21:35 -04:00
Thomas Harte	2e4af90e2d	Resolved output errors.	2016-03-18 21:19:11 -04:00
Thomas Harte	10bc33464d	I don't think this is quite correct, but it's better.	2016-03-18 21:14:06 -04:00
Thomas Harte	61e880de03	Keeping a buffer permanently bound is apparently illegal. So back to copying in on demand. Which I think still improves on synchronisation, but not much.	2016-03-18 21:11:09 -04:00
Thomas Harte	c8ecfb89d8	Some cleaning.	2016-03-16 22:52:33 -04:00
Thomas Harte	0d27d3bb7f	As messy as it is, this use glMapBufferRange to avoid explicit buffer submits.	2016-03-16 22:29:22 -04:00