87eb3038eb
Make the cubic Bézier approximation tolerance proportional to the SVG
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view box size instead of hardcoding it.
Reduces the vertex shading load by approximately half on many of the
"Massively Parallel Vector Graphics" test cases.
Partially addresses #67 .
2018-02-08 20:00:14 -08:00
5879d9778d
Replace the MCAA shader with an extended Loop-Blinn approach and an
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approximation of area based on approximate first-order line distance.
This enables support for full affine transforms in MCAA. It also greatly
simplifies the shader and reduces the amount of work that the GPU needs
to do for fragment shading.
Experimental testing has shown the area approximation to be accurate to
about 4%.
2018-02-02 18:28:41 -08:00
5bd68dec65
Port Pathfinder to use Lyon for Bézier curve math.
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This removes a whole lot of code from `pathfinder_path_utils`. Hopefully
the remaining code can go upstream.
These changes regress quality of stroke widths for cubic curves, because
they move fill-to-stroke conversion before cubic-to-quadratic
conversion. To fix that, we will need to recursively subdivide when
doing fill-to-stroke conversion.
2018-01-29 12:47:47 -08:00
7a2ad35d7e
Don't allow the user to move the camera in the benchmarks and reference tests.
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Doing this messes up the tests.
2018-01-18 17:26:56 -08:00
3be3ff7351
Disable gamma correction, stem darkening, and emboldening in the UI when SSAA mode is selected
2018-01-16 15:50:17 -08:00
6a640eca74
Simplify the B-quad vertex position VBO to have a uniform format, and
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enable early Z for SVG.
Additionally, this switches the B-quad patches for XCAA to be convex
hulls instead of bounding boxes, reducing fragment shader load.
This is a large speedup for the Ghostscript tiger demo: 5x or more.
Closes #33 .
2018-01-11 19:25:02 -08:00
f3841ef402
Document more shader parameters
2018-01-04 18:07:14 -08:00
275a937439
Fix colors and view box for the reference in the SVG reftest
2018-01-04 14:14:47 -08:00
c5187deedd
Use the monochrome MCAA mode for the Material Design icons SVG demo.
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This avoids ugly pixel snapping.
2018-01-03 20:53:25 -08:00
11913a20f1
Merge MCAA monochrome and multicolor shaders.
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Not only is this a lot simpler, it's faster too!
2018-01-03 15:22:28 -08:00
9515451e7a
Remove render tasks entirely.
2017-12-28 11:44:46 -05:00
429e4a3063
Remove clipping support from the SVG demo.
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It's overengineering and was broken anyway. WebRender has much better
clipping support; let's centralize the logic in there.
2017-12-22 16:30:24 -08:00
b6236ac835
Use librsvg/Cairo/Pixman to render SVG reference images.
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The scale and colors aren't correct yet, but this is a start.
2017-12-21 17:20:01 -08:00
c2d89aba91
Add support for the even-odd fill rule in the demo.
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Closes #59 .
2017-12-21 13:53:38 -08:00
84ed1a76b0
Hook the reftest framework up to the SVG renderer
2017-12-20 19:13:07 -08:00
fc95edda81
Add UI for SVG reference tests, not functional yet
2017-12-20 18:49:44 -08:00
ec467ba92c
Fix `getMeshIndexRange()` logic for the first interior mesh.
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This caused the first path to disappear in the SVG demo.
Closes #57 .
2017-12-20 14:10:51 -08:00
f58d3a8512
Add stroke drawing functionality to the mesh debugger.
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It's disabled by default, but it can be enabled by editing the code.
2017-12-20 13:41:31 -08:00
f04f39afd6
Close subpaths explicitly.
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Partially addresses #57 .
2017-12-20 13:41:01 -08:00
6a81ec4893
Make SVG stroke width more accurate, and switch to XCAA by default.
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Partially addresses #57 .
2017-12-20 10:40:21 -08:00
cfe72f486e
Use a single-pass pixel-snapping MCAA algorithm instead of a multipass
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ECAA algorithm for multicolor SVG.
This is much faster than both Skia and the previous XCAA algorithm
while maintaining slightly higher quality than the latter.
There are a couple of known issues:
* Vertical inflection points of hairlines with very steep slopes can
become very light or even drop out occasionally. I suspect this is due
to floating point error.
* Rarely, single columns of pixels can disappear from a mesh. Cause TBD.
Besides these bugs, this technique can be cleaned up and probably made
faster, but it's a sizable improvement as is.
2017-12-18 17:37:14 -08:00
5da56fea0b
Fix 3D demo
2017-12-12 09:46:38 -06:00
b8785a31db
Implement 8xSSAA and 16xSSAA in the SVG demo
2017-12-11 19:02:20 -08:00
1102965f6d
Use RGB5_A1 on macOS to work around driver stalls with RGBA
2017-12-11 12:18:48 -08:00
00433d418a
Disable subpixel AA during the SVG benchmark
2017-12-06 12:19:24 -08:00
1459267292
Make benchmark sizes more sensible for SVG
2017-12-06 10:58:16 -08:00
80c0d07f1a
Revert refactoring of Renderer into BaseRenderer.
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It's not needed.
2017-12-05 19:08:31 -08:00
30893fb9ad
Partially implement benchmarking for SVG.
2017-12-05 19:05:23 -08:00
d0d08816b9
Factor the SVG renderer out of the demo so it can be reused
2017-12-05 11:23:13 -08:00
15d8c98ff9
Fix a bug preventing the benchmark from running, and improve its UI
2017-12-04 22:02:16 -08:00
bc863e3ed3
Remove commented out code
2017-12-04 11:55:37 -08:00
30062aea81
Expose emboldening in the demo UI
2017-12-03 17:28:30 -08:00
9b59ce2443
Fix rotation artefacts by rendering curves in two passes, clipping at X
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inflection points as necessary.
2017-12-03 16:59:35 -08:00
1de0378f1e
Get rotation working in the text demo.
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There are some known artefacts when zoomed in heavily in XCAA mode.
2017-11-30 16:08:15 -08:00
95a1dd0195
Eliminate the distinction between layout and display pixels per unit
2017-11-30 09:51:07 -08:00
86660572bd
Upgrade ST-transforms to affine transforms where possible, and add
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incomplete rotation support to the text demo
2017-11-29 17:06:52 -08:00
58260beb8c
Only run the ECAA mask shader on edge pixels
2017-11-28 17:05:59 -08:00
6942bb51ca
Add support for full 3D transforms, including rotation, to SVG in XCAA mode.
2017-11-28 16:15:06 -08:00
6d85cb3382
Rename the integration test to the reference test to be more specific
2017-11-20 17:18:30 -08:00
99c7e685e7
Rebuild the layout when new text is entered in the text demo
2017-11-20 17:09:39 -08:00
8c89ef9938
Make sure the gamma LUT loads before the initial render
2017-11-20 16:47:52 -08:00
5a1e4d4e60
Fix rendering of glyphs in the 3D demo
2017-11-20 16:25:57 -08:00
529a3eae23
Add rotation support for SSAA in SVG; switch to Material Design icons
2017-11-20 15:32:02 -08:00
3388b38e3b
Try to fix #50 by inserting an "as any"
2017-11-17 17:10:05 -08:00
86df78f939
Flesh out the integration test more
2017-11-17 17:06:59 -08:00
ca0387d355
Get reference and rendered glyphs displaying side-by-side in the integration test
2017-11-13 20:42:07 -08:00
2578298198
More work on the integration test
2017-11-13 17:23:03 -08:00
0642e65c9d
Stub integration test functionality some more
2017-11-13 15:26:46 -08:00
bc99fdf02b
Enable early Z in the XCAA multicolor direct interior pass
2017-11-11 14:45:28 -08:00
2975038891
Reenable early Z.
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It regressed again!
2017-11-11 14:04:57 -08:00
2e90b3bce8
Multiply stem darkening amounts by sqrt(2).
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This compensates for the fact that macOS dilation is relative to the pixel square, while our dilation is relative to each vertex normal.
2017-11-11 11:29:52 -08:00
ceb9d2bb80
Tweak the max stem darkening ppem to avoid a "pop" when zooming
2017-11-11 09:41:21 -08:00
d90d3af21b
Fix swapped min/max stem darkening amounts
2017-11-11 09:38:28 -08:00
932fc64524
Stub an integration test page
2017-11-10 13:58:07 -08:00
2f7205bd22
Improve the stem darkening vertical extents preservation hack
2017-11-10 08:40:31 -08:00
a73fb9ab8d
Try to align glyphs on their baselines after stem darkening
2017-11-10 08:16:27 -08:00
8e7eb6ca60
Support stem darkening in SSAA mode.
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The normals are incorrect right now in some cases, but it looks OK-ish.
2017-11-09 16:20:15 -08:00
35e59b1a05
Fix MCAA in the text demo.
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The B-quad ranges were not being expanded properly.
2017-11-08 20:58:22 -08:00
9a5728aab6
Implement clipping in XCAA mode
2017-11-08 16:45:30 -08:00
997e9b852a
Round x-heights naturally instead of rounding up.
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I think this matches what macOS does.
2017-11-07 17:39:29 -08:00
e5b76726d9
Use the LUT to gamma correct text, and fix stem darkening math
2017-11-07 17:24:19 -08:00
82fd214a76
Load the gamma LUT in the demo
2017-11-07 14:13:13 -08:00
8a1e3bc8b2
Add some basic Phong shading to the monument
2017-11-03 18:49:25 -07:00
1e446f816f
Add basic clip path support when rendering with SSAA
2017-11-03 14:29:31 -07:00
4cbc2a8800
Add partial support for clip paths in the SVG demo.
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At the moment, this only works when antialiasing is off.
2017-11-03 14:14:29 -07:00
511e5956d8
Don't clear away the scenery after drawing it!
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Fixes the 3D view.
2017-11-02 16:17:35 -07:00
572b7cdd4a
Encode path IDs using a sparse representation, not a dense one.
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This reduces the size of serialized mesh libraries. It also makes it
much easier to expand meshes and select individual paths for rendering.
2017-11-02 16:08:31 -07:00
c767141169
Build render tasks for clips.
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This doesn't actually clip anything yet, but it's a step in that direction.
2017-10-31 17:04:06 -07:00
b9f6f13cec
Stop going to the DOM every time we need the color of an SVG path
2017-10-31 14:50:15 -07:00
579528ebdc
Remove one direct rendering pass from the multicolor XCAA path
2017-10-31 12:41:38 -07:00
d65bfb7fb2
Show compositing time in the SVG demo
2017-10-31 12:35:24 -07:00
a6582aefb3
Merge pull request #45 from mbebenita/toggle
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Mesh Debugger Improvements
2017-10-30 15:31:36 -07:00
2604151521
Replace the multicolor (SVG) XCAA with a multipass compositing algorithm
2017-10-30 15:28:35 -07:00
55f964001b
Toggle layers in mesh debugger.
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Also, stroke and fill vertices after drawing lines.
2017-10-29 16:25:50 -07:00
45755816c8
Draw segment hull.
2017-10-29 15:13:55 -07:00
bf3779bf89
Calculate normals for B-vertices.
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I'm planning to use this for fixing hairlines in XCAA.
2017-10-27 15:12:33 -07:00
0506365cc7
Fix blending in the text demo.
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As a nice added cleanup, this commit standardizes on the red channel for
all monochrome textures.
2017-10-26 20:15:51 -07:00
70390915ab
Add Pulse Zoom button.
2017-10-26 11:32:30 -07:00
f8c950d39a
Stop calling `getParameter` and `getBufferParameter`.
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They're incredibly slow in Chrome.
2017-10-25 19:38:41 -07:00
0b179f3a40
Add preliminary DirectWrite support on Windows.
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This will eventually need to call into GDI to do hinting, but it's good
enough for now.
2017-10-25 13:01:36 -07:00
9d93cebca6
Stop using multiple render targets.
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We don't need them anymore, so let's lower our hardware requirements!
2017-10-20 22:04:53 -07:00
048c261f6c
Add a working experimental implementation of XCAA for SVG.
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This has known performance problems and artefacts due to working at
sample level only, but it's a decent first cut.
2017-10-20 19:41:18 -07:00
a523d71e3c
Stop leaking buffer textures
2017-10-18 19:47:44 -07:00
03b4ec2cc6
Stop leaking VAOs
2017-10-18 19:16:56 -07:00
70201bb29c
Draw distant glyphs as prerendered images in the 3D demo.
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This has known performance problems, but it's a good first cut.
2017-10-18 16:19:19 -07:00
024b00e479
Decouple text renderers from the text demo's layout
2017-10-17 13:37:36 -07:00
d66bff9768
Remove useless null check
2017-10-17 12:11:49 -07:00
32de1d3441
Decouple text renderers from HTML canvas elements.
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This allows for offscreen rendering of text.
2017-10-17 12:10:20 -07:00
562851fd6e
Lint against long lines
2017-10-17 11:58:03 -07:00
9278a4e0e3
Move the text rendering and atlas code out of the text demo so that it
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can be reused elsewhere
2017-10-17 11:54:13 -07:00
03ee672787
Separate the GPU rendering component of views from the view objects
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themselves in the demo.
This (mostly) enables rendering outside a view.
2017-10-16 22:26:25 -07:00
976b924842
Decouple mesh-specific data from GL-context-wide data in the demo
2017-10-16 16:48:02 -07:00
81787f4750
Remove `MonochromeDemoView`
2017-10-16 16:11:00 -07:00
7a0ade99e2
Support subpixel AA in the benchmark
2017-10-16 16:08:05 -07:00
cc16158a91
Decouple antialiasing strategies from views in the demo
2017-10-16 13:36:22 -07:00
d8713f214c
Use the Rust benchmarking algorithm for less noisy results
2017-10-15 14:37:44 -07:00
314185684c
Implement stem darkening and split ECAA into ECAA and MCAA.
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We now implement stem darkening (also known as font dilation) like
macOS and FreeType under certain configurations. This pushes out font
outlines along their normals slightly in order to make small text easier
to read. This is especially important when performing gamma correction,
as otherwise text can end up too light.
Because the stem darkening is implemented in the vertex shader, it can
easily break the mesh. Therefore, I needed to implement a new rendering
mode that does not use the mesh. It's a variant of ECAA, and for
clarity's sake I've renamed the related antialiasing methods:
* MCAA stands for "mesh coverage antialiasing" and is the new name for
what was called "ECAA" prior to this patch.
* ECAA now stands for "edge coverage antialiasing". It does not use the
mesh but rather computes winding numbers from scratch for every pixel.
Surprisingly, despite being worse asymptotically, this usually ends up
being faster than MCAA at small font sizes, presumably because there are
fewer vertices to transform.
* XCAA, "exact coverage antialiasing" is a generic term that refers to
both ECAA and MCAA. References to ECAA have been changed to XCAA as
needed.
2017-10-15 13:28:49 -07:00
1846ebd861
Use sRGB color textures where available
2017-10-06 19:18:34 -07:00
2a236319d4
Use regular VBOs instead of textures to store vertex positions for ECAA.
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This improves performance at small font sizes a bit by reducing vertex
shading load.
2017-10-06 16:42:51 -07:00
6a7c013e61
Make the hints a uniform instead of a buffer texture.
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Saves a good bit of memory traffic during vertex shading.
2017-10-05 19:14:52 -07:00
Patrick Walton