9c470e77c1
Make macOS font rendering not depend on FreeType
2017-10-20 12:10:57 -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
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
b631fec80f
Cache font mesh libraries on the server
2017-10-02 19:58:38 -07:00
092b46e056
Reenable early Z optimizations
2017-10-02 15:36:39 -07:00
f3f893302a
Introduce a simple file format for serializing meshes, and use it in the demo
2017-10-02 15:17:21 -07:00
475f5dca71
Introduce a new mesh library abstraction for holding meshes.
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Simplifies the server code and allows avoiding copying indices all the time.
Closes #29 .
2017-10-02 14:03:56 -07:00
8c6110a388
Remove the duplicated de Casteljau subdivision code in
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`partitioner::geometry`
2017-10-02 11:45:34 -07:00
705274997d
Remove the now-obsolete path legalizer
2017-10-02 11:40:11 -07:00
613bc7c29d
Don't start subdividing active edges until we're sure an entire B-quad
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will be emitted.
Otherwise it messes up the parity.
Fixes the bottom curve of the lowercase "p" in Open Sans when rendered
with Loop-Blinn.
2017-09-29 13:25:19 -07:00
c37fd1f1e8
Ignore intersections beyond the sweep line.
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Improves the outer stroke of the tiger.
2017-09-25 19:15:36 -07:00
93de8383f9
Replace the implicitization algorithm for curve intersection with a
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simpler one based on binary search and the quadratic formula.
This does a better job avoiding floating point error and improves the
rendering of the tiger.
2017-09-25 18:51:02 -07:00
2a906569e5
Emit B-quads around both self-intersecting active edges.
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Improves one of the whiskers in the tiger.
2017-09-25 12:58:42 -07:00
db32009d7b
Create fewer useless B-vertices
2017-09-22 19:15:58 -07:00
2039051f01
Remove bogus fast path that tried to avoid active edge order calculation.
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It was causing us to miss a bunch of crossings in the tiger whiskers.
2017-09-22 13:42:20 -07:00
be1b100826
Split B-quads whose curves' convex hulls intersect in most cases.
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Avoids some rendering artefacts with Loop-Blinn, improving the tiger.
2017-09-21 22:47:00 -07:00
a126e1248e
Don't structure fills around the even-odd rule.
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Improves self-intersecting paths under the winding rule.
2017-09-21 14:54:04 -07:00
4ac11e9010
Switch to a more robust intersection algorithm based on implicitization
2017-09-20 21:23:56 -07:00
b732878532
Encapsulate the file picker code into a view class.
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This will allow the mesh debugger to use it.
2017-09-20 11:51:20 -07:00
72d9ad7de0
Handle path self intersection
2017-09-19 11:43:39 -07:00
d644f1b6a6
Implement curve-curve and curve-line intersection, untested as of yet
2017-09-18 21:00:34 -07:00
dbd83d17ef
Implement the winding fill rule for real
2017-09-18 15:34:36 -07:00
e5f9b56a1d
Implement the winding fill rule
2017-09-18 14:19:28 -07:00
a7d75f913c
Split paths into monotonic segments before partitioning them in the demo
2017-09-12 09:35:57 -07:00
3e5b53f13c
Partially refactor the path APIs to be streaming, like Lyon
2017-09-08 13:09:00 -07:00
444e7bbf96
Use the Citardauq Formula in the partitioner as well as the shader to avoid precision problems.
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Addresses the issue with the Nimbus Sans "o" mentioned in #24 .
2017-09-01 23:45:51 -07:00
52afa359b4
Render a line of text using the atlas
2017-08-22 18:25:32 -07:00
93277c7c11
Allow multiple glyphs to be rendered simultaneously
2017-08-19 16:34:02 -07:00
ec78a632dc
Split path IDs and Loop-Blinn data into separate VBOs
2017-08-17 12:47:50 -07:00
5f89f7ba50
Fix compile errors in shaders
2017-08-13 13:39:51 -07:00
57ebbf8281
Split out B-vertex positions and info so that they're easier to pack into textures
2017-08-11 15:56:07 -07:00
3fcd4d472b
Shuffle `BQuad` fields around for better alignment in GLSL
2017-08-10 17:47:46 -07:00
0ad2f9abfe
Initial implementation of the Rocket-based demo server
2017-08-10 15:26:27 -07:00
95b356435e
Rename `partitionfinder` to `partitioner` and remove the old tessellator
2017-08-08 11:32:51 -07:00
Patrick Walton