Commit Graph

50 Commits

Author SHA1 Message Date
Patrick Walton 5a21557a6d Implement basic linear gradients.
This is not a very efficient implementation yet, but it seems to work.
2020-02-10 16:01:05 -08:00
Patrick Walton a66ed4c073 Specify tile texture coordinates as an affine transform.
Part of the groundwork for gradients.
2020-02-05 13:59:32 -08:00
Patrick Walton b269723254 Switch to per-pixel texture lookup for paints.
This is a prerequisite for supporting gradients and images.
2020-02-04 21:50:13 -08:00
Patrick Walton 222fa89b23 Use a 3D transform in the tile vertex shaders.
This opens the door to caching tiles at different zoom levels (issue #191).
2019-06-25 11:32:39 -07:00
Patrick Walton d86ff9011a Update the postprocessing shader and vertex array for the Metal changes.
Closes #201.
2019-06-21 18:04:18 -07:00
Patrick Walton de0662e08e Update `spirv-cross` to upstream master.
A fix has been merged for the issue that was breaking Pathfinder, so we can now
use the master branch.
2019-06-21 07:24:24 -07:00
Patrick Walton 487577a11b Add Metal support.
This commit substantially reworks the `pathfinder_gpu` API to better support
modern APIs like Metal. It should open the door to `gfx-rs`, `wgpu`, Vulkan,
and D3D12 backends relatively straightforwardly.

A new example, `canvas_metal_minimal`, has been added.

Note that the new Metal shaders require a patched version of `spirv-cross` to
build properly. An upstream patch is forthcoming.
2019-06-20 11:47:22 -07:00
Patrick Walton 9f9233c153 Add Metal shaders, cross-compiled from the GLSL via SPIR-V.
The Metal shaders are checked into the repository for convenience, but they
should not be directly edited. Instead, edit the corresponding GLSL shader in
the top-level `shaders/` directory, and rerun `make` in there.
2019-06-05 18:29:25 -07:00
Patrick Walton bc713a5181 Remove the rustache dependency.
1/3 reduction in binary size for `canvas_minimal`.

Closes #158.
2019-05-26 13:02:52 -07:00
Patrick Walton 25a6c33a1a Remove the object index attribute from the shaders, since it's now unused 2019-05-14 15:22:50 -07:00
Patrick Walton 7a02b78b3d Explicitly specify color texture coordinates for alpha and solid tiles.
This is groundwork for gradients and images.

This commit also refactors the interface for vertex attributes to use named
parameters (via structs), for clarity.
2019-05-14 15:11:04 -07:00
Patrick Walton 376a1c7165 Rename "fill colors" to "paint" in preparation for gradients and images 2019-05-14 11:33:52 -07:00
Patrick Walton 5e64876579 Simplify gridlines in the demo shader 2019-05-02 14:12:13 -07:00
Patrick Walton 6c31e1bc01 In VR mode, render one eye and then reproject to both eyes instead of rendering
twice.

This reduces both CPU and GPU time a lot in exchange for a small loss in
quality.
2019-04-26 17:22:54 -07:00
Patrick Walton c688d04412 Remove the scene assembly thread, and pipeline only fills instead of alpha
tiles.

Removing a thread should make it easier to manually assign threads to CPUs, as
is necessary on devices with poor schedulers like Magic Leap 1.
2019-04-18 13:50:26 -07:00
Patrick Walton db3851d754 Get subpixel AA and gamma correction working in 2D 2019-03-25 16:20:34 -07:00
Patrick Walton 224c8e85b9 Create separate shaders for monochrome and multicolor tiles.
This is preparation for fixing subpixel AA.
2019-03-22 14:28:31 -07:00
Patrick Walton 0458d9a7f2 Factor out bits of the postprocessing shader into includes 2019-03-18 21:40:10 -07:00
Patrick Walton 9c404dfdc1 Add an Android port 2019-03-12 13:55:26 -07:00
Patrick Walton dc69d1197e Tweak debug UI 2019-02-26 15:24:39 -08:00
Patrick Walton e10e2e97d4 Tweak the camera transforms in the 3D view 2019-02-22 11:54:01 -08:00
Patrick Walton c7a1d9e960 Use stencil to integrate the vector scene into the 3D environment 2019-02-19 12:03:02 -08:00
Patrick Walton 3b8ecfd74c WIP before removing barycentric coordinates 2019-02-18 18:13:10 -08:00
Patrick Walton 9af3bac11f Implement depth interpolation, not working yet 2019-02-18 13:42:30 -08:00
Patrick Walton d30743a69c Begin refactoring the demo into a shared library and a platform-specific
entry point.

This will help the upcoming wasm port.
2019-02-15 18:21:46 -08:00
Patrick Walton 93c928bf5c Move Pathfinder to `pathfinder-classic` in preparation for Pathfinder 2 2017-06-27 14:13:11 -07:00
Patrick Walton b86133a4ef Initial experimental support for subpixel antialiasing 2017-02-22 16:31:44 -08:00
Patrick Walton 49408b95cb Add support for subpixel offsets.
Closes #11.
2017-02-20 16:01:15 -08:00
Patrick Walton 6ac37c5085 Support cubic Béziers for fonts with CFF outlines 2017-02-16 19:37:21 -08:00
Patrick Walton 1b10ffdd54 Try to fix Linux/Windows 2017-02-14 12:29:30 -08:00
Patrick Walton 731360bc9d Try to fix RGBA atlas generation in OpenGL 2017-02-13 12:32:15 -08:00
Patrick Walton cd11deab46 Support RGBA atlases, needed for WebRender 2017-02-10 19:07:23 -08:00
Patrick Walton 96daa32b90 Move direction calculation from the TCS to the TES to properly handle cusps 2017-02-09 17:09:19 -08:00
Patrick Walton 5ecfadc3be Update for unorm change in `compute-shader` 2017-02-08 16:29:23 -08:00
Patrick Walton 428a91aefa Get things working on Windows 2017-02-08 13:55:36 -08:00
Patrick Walton e9fd5d6b1b Work around driver bugs on Apple Radeon GPUs 2017-02-07 14:39:36 -08:00
Patrick Walton 65153b65ee Fix subpixel positioning 2017-02-06 18:02:16 -08:00
Patrick Walton 7cd7210304 Fix winding rule to paint negative winding numbers 2017-02-06 15:28:23 -08:00
Patrick Walton 3fb592e05a Fix up examples and tests 2017-02-02 16:40:46 -08:00
Patrick Walton 5bccf88445 Make zooming work better; fix atlas sizing bugs 2017-01-30 18:33:44 -08:00
Patrick Walton 30daf10cdd Fix syntax on Linux; drop GL version to 3.3 2017-01-25 20:25:54 -08:00
Patrick Walton 2f181f23aa Add a draft GLSL accumulation step, currently untested 2017-01-25 19:22:04 -08:00
Patrick Walton 1336bb790e Add a geometry-shader-based path for debugging.
This is useful for testing via llvmpipe or softpipe on Linux, because
no software Mesa backend supports tessellation shaders.
2017-01-25 18:53:11 -08:00
Patrick Walton d5b61e382e Get things basically working 2017-01-25 17:08:00 -08:00
Patrick Walton 50ad78db2a Draft end-to-end support for the new algorithm. Not working yet. 2017-01-24 15:30:14 -08:00
Patrick Walton 1cd3a1e6bd Migrate the glyph buffers to be OpenGL buffers 2017-01-23 22:03:40 -08:00
Patrick Walton 0569831969 Fix shader compilation errors; convert the coverage buffer to a texture 2017-01-23 19:39:51 -08:00
Patrick Walton f1ec3385de Draft shader code for the new tessellation-based algorithm 2017-01-23 15:33:12 -08:00
Patrick Walton bdf6ebab24 Draft complete end-to-end code. Not working yet. 2017-01-11 20:44:10 -08:00
Patrick Walton 7056a7632b Create buffers and create skeleton OpenCL shaders 2017-01-10 19:57:08 -08:00