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Author SHA1 Message Date
Elias Naur 61810b1bff
Merge pull request #34 from eliasnaur/master 
implement clip paths
 2020-10-16 11:34:52 +02:00
Elias Naur 8fab45544e shader: implement clip paths 
Expand the the final kernel4 stage to maintain a per-pixel mask.

Introduce two new path elements, FillMask and FillMaskInv, to fill
the mask. FillMask acts like Fill, while FillMaskInv fills the area
outside the path.

SVG clipPaths is then representable by a FillMaskInv(0.0) for every nested
path, preceded by a FillMask(1.0) to clear the mask.

The bounding box for FillMaskInv elements is the entire screen; tightening of
the bounding box is left for future work. Note that a fullscreen bounding
box is not hopelessly inefficient because completely filling a tile with
a mask is just a single CmdSolidMask per tile.

Fixes #30

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-10-09 13:20:26 +02:00
Elias Naur 55cfd472a5 shader: delete unused code 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-10-09 13:20:26 +02:00
Elias Naur db6172d811
Merge pull request #33 from eliasnaur/master 
piet-gpu-types: remove unused types
 2020-09-27 23:47:38 +02:00
Elias Naur 9be0faba6f piet-gpu-types: remove unused scene elements 
Delete image compute shader as well; it is unused.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-27 18:57:53 +02:00
Elias Naur fa9bf0dc2b piet-gpu-types: remove unused ptcl types 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-27 18:30:33 +02:00
Elias Naur dceb0f9412 piet-gpu-types: remove unused annotated types 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-21 10:55:58 +02:00
Elias Naur 02a6bfbb6c
Merge pull request #32 from eliasnaur/master 
Clean up, add maximum workgroup size control
 2020-09-16 08:44:48 +02:00
Elias Naur ac3ac3ddff shader: introduce a crude setting for adjusting the maximum workgroup size 
Both the Vulkan and OpenGL ES spec allow implementations to limit workgroups to
128 threads. Add a LG_WG_FACTOR setting for easy switching between 128 and 256
threads, with 256 being kept as the default setting.

Manually tested that LG_WG_FACTOR = 0 (128 threads) works as expected.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-13 13:04:13 +02:00
Elias Naur 326f7f0d03 shader: delete more unused code and variables 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-13 13:03:56 +02:00
Brian Merchant a73e7cf282
Merge pull request #31 from eliasnaur/master 
compute IMAGE_WIDTH and IMAGE_HEIGHT; remove dead code from setup.h
 2020-09-04 03:34:59 -07:00
Elias Naur 05636995dd compute IMAGE_WIDTH and IMAGE_HEIGHT; remove dead code from setup.h 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-08-29 15:03:40 +02:00
Elias Naur fa38101e39
Merge pull request #29 from eliasnaur/master 
shader: remove dead code
 2020-08-28 17:57:45 +02:00
Elias Naur de4f963ba0 shader: remove dead code 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-08-28 17:37:46 +02:00
Raph Levien d5106e8a7e
Merge pull request #28 from eliasnaur/master 
Fix linewidth transformations
 2020-08-24 09:10:31 -07:00
Elias Naur cfd57361c4 Fix linewidth transformations 
The transformation determinant is signed, but we're only interested in
the absolute scale for transforming linewidths.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-08-24 16:12:18 +02:00
Brian Merchant 72e2dfab3d
Merge pull request #27 from bzm3r/vestige-cleanup 
Clean up bits of right edge tracking logic left over from sort-middle.
 2020-08-15 16:30:20 -07:00
bhmerchant@gmail.com d836d21d12 Clean up bits of right edge tracking logic left over from sort-middle. 2020-08-12 19:57:14 -07:00
Raph Levien 724c4899f2
Merge pull request #26 from linebender/license 
Add unlicense
 2020-07-02 23:22:42 -07:00
Raph Levien 4470cdeccc Add unlicense 
Also take the opportunity to add more links to the README and adopt
the Rust code of conduct.
 2020-07-02 17:32:14 -07:00
Raph Levien 2c0f1d3cdd
Merge pull request #25 from ztlpn/fix-mapping-size 
Fix read mapping size in the Vulkan adapter
 2020-07-02 11:45:50 -07:00
Alexey Zatelepin 9667c34e7e Fix read mapping size (size is number of bytes, not number of items) 2020-07-02 21:32:17 +03:00
Raph Levien 368721e317
Merge pull request #24 from msiglreith/docs 
Shader documentation and a slight cleanup
 2020-07-01 17:30:16 -07:00
Raph Levien 46d0e7cea2
Merge pull request #22 from kant/patch-1 
Minor fix on paragraph 35
 2020-06-29 07:21:59 -07:00
msiglreith 1cc5c7ac0d Shader documentation and a slight cleanup 2020-06-28 15:37:27 +02:00
Darío Hereñú 9b87de055f
Minor fix on paragraph 35 2020-06-15 11:15:32 -03:00
Raph Levien 258bf6890a
Merge pull request #21 from msiglreith/update-winit 
Update winit example
 2020-06-14 14:42:48 -07:00
msiglreith eed71721eb Update winit example 2020-06-14 23:32:59 +02:00
Raph Levien dc5facd198
Merge pull request #20 from linebender/sorta 
A sorta-middle architecture
 2020-06-13 13:40:48 -07:00
Raph Levien 65f802894c Merge branch 'master' into sorta 2020-06-13 07:30:40 -07:00
Raph Levien daa7c9dd64 Merge branch 'sort_middle' 2020-06-11 16:17:40 -07:00
Raph Levien 73df5534a1
Merge pull request #19 from linebender/sort_middle 
Bring sort_middle branch to master
 2020-06-11 16:16:10 -07:00
Raph Levien b23113461b Minor cleanups 
Get rid of warnings. Do cargo update to bump deps.
 2020-06-10 14:10:28 -07:00
Raph Levien 79cc9da811 Fancy flattening 
Implement same flattening algorithm as kurbo.
 2020-06-09 20:45:19 -07:00
Raph Levien eaa1d261c3 Sederberg error metric 
Use proper math to compute number of subdivisions. This works but is not
very satisfying, as it over-subdivides.
 2020-06-09 18:43:49 -07:00
Raph Levien b571e0d10c Continue wiring up gpu-side flattening 
All segments given to path coarse raster are cubics. Flatten to
quadratics.

This works but the quality is not (yet) good.
 2020-06-09 17:56:11 -07:00
Raph Levien 0f44bc8b78 Start GPU-side flattening 
This starts the work on GPU-side flattening by plumbing curves through.
 2020-06-09 16:01:47 -07:00
Raph Levien 3a8227d025 Non-load balanced coarse path raster 
This is a bit of a revert of the load-balanced ("more parallel") coarse
path rasterizer, but includes fills and also uses atomicExchange.

I'm doing it this way because it should be considerably easier to do
flattening in this structure, even though there will be some performance
regression.
 2020-06-09 15:09:53 -07:00
Raph Levien 7118c8efc1 Fix backdrop of segments to left of viewport 
Make sure we account for backdrop in segments clipped out of viewport.
 2020-06-09 10:25:22 -07:00
Raph Levien 6db4e20bbb More parallel backdrop propagation 
This is a nice improvement but still not great on tiger.
 2020-06-06 08:23:40 -07:00
Raph Levien af0a1af8e1 Make fills work 
The backdrop propagation is slow but it does work.
 2020-06-05 22:40:44 -07:00
Raph Levien feeaa31fd1
Merge pull request #17 from linebender/cli_args 
Command line arguments
 2020-06-05 09:04:55 -07:00
Raph Levien f9f5961428 Use atomicExchange over atomicCompSwap 
Significant perf win (approx 2x in the path coarse rasterizer)
 2020-06-05 08:24:26 -07:00
Raph Levien e5dd9ae01e More parallel path coarse raster 
Use fancier load balancing algorithm for coarse rendering of paths.

Seems to work and an improvement in some cases.
 2020-06-04 17:42:33 -07:00
Raph Levien 877da4a98e Faster coarse raster 
Store a lot more tile context in shared memory and do the work from
that.
 2020-06-04 10:39:08 -07:00
Raph Levien e1aa9b2f5d Remove bbox guard 
It's probably not necessary.

This development still work in progress.
 2020-06-03 20:59:19 -07:00
Raph Levien 7f4a6523a8 Filter sparse tiles 
Have a more-parallel read of the tile structures based on bbox coverage,
and only set the bit when the tile isn't empty.

This is a speedup, but there is some duplicated work and it is possible
to improve it further.
 2020-06-03 17:55:42 -07:00
Raph Levien 63ba45c774 Fix performance issues 
Use larger workgroup for tile initialization (utilization was poor).
Provide correct element count to coarse rasterizer.
 2020-06-03 15:32:58 -07:00
Raph Levien ff8cee059c Optimize tile allocation 
Use parallel scheme to zero out tiles.
 2020-06-03 14:46:41 -07:00
Raph Levien 70a9c17e23 Continue building out pipeline 
Plumbs the new tiling scheme to k4. This works (stroke only) but still
has some performance issues.
 2020-06-03 12:21:09 -07:00