7bd3a48110
Don't clip curves to the left and right sides of the pixel column twice
2017-11-21 15:51:27 -08:00
86df78f939
Flesh out the integration test more
2017-11-17 17:06:59 -08:00
8c1b3e9cb5
Optimize and better document the exact antialiasing calculation
2017-11-14 18:02:26 -08:00
bc99fdf02b
Enable early Z in the XCAA multicolor direct interior pass
2017-11-11 14:45:28 -08:00
575d4c2366
Fix regression involving NaN when doing curve clipping
2017-11-11 09:38:06 -08:00
37cdc9bc5c
Optimize the signed area calculation
2017-11-10 23:09:54 -08:00
1f5dbe33e8
Apply optimizations to the multi-edge mask shader too
2017-11-10 22:09:29 -08:00
fc2ac12fc0
Optimize the XCAA fragment shaders a bit
2017-11-10 19:25:47 -08:00
75474b19e6
Add the normal angle to the shaders used in the 3D demo
2017-11-10 15:03:43 -08:00
3bcd05a5ed
Update the XCAA multi direct shaders to support normals.
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Fixes XCAA in the SVG demo.
2017-11-09 16:42:53 -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
e5b76726d9
Use the LUT to gamma correct text, and fix stem darkening math
2017-11-07 17:24:19 -08:00
8a1e3bc8b2
Add some basic Phong shading to the monument
2017-11-03 18:49:25 -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
579528ebdc
Remove one direct rendering pass from the multicolor XCAA path
2017-10-31 12:41:38 -07:00
2604151521
Replace the multicolor (SVG) XCAA with a multipass compositing algorithm
2017-10-30 15:28:35 -07:00
e4b531f3a0
Do some work on shader documentation
2017-10-26 20:30:47 -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
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
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
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
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
28837f72a6
Fetch and transform fewer vertices in the ECAA cover shader
2017-10-05 13:30:32 -07:00
22d0eb7b24
Fix file headers in shaders/
2017-10-03 15:32:03 -07:00
99f6f2a104
Snap stems up to the nearest pixel when hinting
2017-09-29 18:02:33 -07:00
83cfb1d9d5
Make glyphs transparent.
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Avoids cutting off the bottom of the "g" in the text demo.
2017-09-19 13:57:56 -07:00
f68da75c75
Implement SSAA for the 3D demo.
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This commit additionally refactors transforms to be resolution-independent as much as possible throughout all the demos.
2017-09-12 19:43:43 -07:00
eb9c0ceb4d
Implement "slight" hinting by rounding x-heights up to the nearest pixel
2017-09-09 13:12:51 -07:00
3ee066bdf0
Implement subpixel ECAA
2017-09-07 14:58:41 -07:00
cedce49a1d
Perform color defringing in the shader using the FreeType algorithm
2017-09-06 16:50:36 -07:00
82d2f076d7
Add basic subpixel AA support for SSAA.
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No LCD filter is implemented yet, so the color fringing is currently fairly extreme.
2017-09-06 16:32:11 -07:00
4b7ac0182c
Implement basic working 3D support
2017-09-05 19:47:19 -07:00
a9dd33d479
Stub a shader for objects in the 3D demo
2017-09-03 19:24:28 -07:00
07d425dfb2
Split the ECAA shader into separate shaders for monochrome and multicolor
2017-08-24 12:08:58 -07:00
ad565ffde7
Use early Z to avoid resolving blank areas for ECAA. ~50% speedup.
2017-08-24 11:43:38 -07:00
81a6f8f051
Enable early Z for edge detection and render only in the used area of the atlas
2017-08-23 19:18:24 -07:00
52afa359b4
Render a line of text using the atlas
2017-08-22 18:25:32 -07:00
7db61bfe8e
Add a transform parameter to blit and switch framebuffer sizes to be `glmatrix.vec2` types
2017-08-19 16:52:14 -07:00
9b3f9d029c
Fix flipped inequality in the shader causing AA artefacts
2017-08-19 11:37:06 -07:00
37c947c751
Get basic ECAA fully working
2017-08-18 20:23:45 -07:00
343c67aa33
Remove commented out debug code
2017-08-18 17:13:44 -07:00
653530be0b
Add a curve shader for ECAA and refactor the line shader to minimize code duplication
2017-08-18 17:12:58 -07:00
3a9b29735a
Get exact antialiasing mostly working for lines (no curves yet)
2017-08-18 15:17:23 -07:00
a9eeec39fe
Implement the line antialiasing shader, untested as of yet
2017-08-18 11:44:17 -07:00
ccf5000e1c
Get the cover step mostly working
2017-08-17 22:47:28 -07:00
9a7063a29b
Render conservative coverage. Not working yet.
2017-08-17 20:09:18 -07:00
ec78a632dc
Split path IDs and Loop-Blinn data into separate VBOs
2017-08-17 12:47:50 -07:00
0a4d57580a
Add the ECAA cover shader, untested as of yet
2017-08-16 19:51:13 -07:00
4b62ec8fa7
Get edge detection working in the demo
2017-08-16 16:37:39 -07:00
b10807d217
Initial setup for ECAA in the demo
2017-08-15 22:09:09 -07:00
3f7fc8baf6
Add an edge detection shader for ECAA, untested as of yet
2017-08-15 17:28:07 -07:00
0f5b23622a
Implement SSAA in the demo
2017-08-15 15:57:52 -07:00
eb7cfe7c5f
Fetch the colors of paths
2017-08-14 21:24:58 -07:00
309034b7dd
Implement basic Loop-Blinn curves
2017-08-14 19:08:18 -07:00
f8bd405759
Get basic polygons rendering in the demo
2017-08-14 16:08:45 -07:00
5f89f7ba50
Fix compile errors in shaders
2017-08-13 13:39:51 -07:00
ebeaf119ba
Add some OpenGL ES 2.0 shaders for direct rendering, untested
2017-08-11 18:12:17 -07:00
Patrick Walton