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| author | Luboš Luňák <l.lunak@collabora.com> | 2019-10-29 13:06:40 +0100 |
|---|---|---|
| committer | Luboš Luňák <l.lunak@collabora.com> | 2019-11-27 09:55:13 +0100 |
| commit | e614161cadb2d882b2275dc9d1166050d201fae1 (patch) | |
| tree | 164c0fcb829a9a97323b2ac165a61b08e4f5dd4b /vcl/skia/README | |
| parent | 065034637e53975e138887a900ba840f59353709 (diff) | |
add Skia VCL README with some basic information
Change-Id: Ifff230ce76b4b33cd91322e564be1685afea763f
Diffstat (limited to 'vcl/skia/README')
| -rw-r--r-- | vcl/skia/README | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/vcl/skia/README b/vcl/skia/README new file mode 100644 index 000000000000..6c3da7254b8b --- /dev/null +++ b/vcl/skia/README @@ -0,0 +1,24 @@ +This is code for using the Skia library as a drawing library in VCL backends. +See external/skia for info on the library itself. + +Environment variables: +====================== + +SAL_DISABLESKIA=1 - force disabled Skia +SAL_ENABLESKIA=1 - enable Skia, unless blacklisted (and if the VCL backend supports Skia) +SAL_FORCESKIA=1 - force using Skia, even if blacklisted +SAL_SKIA=raster|vulkan - select Skia's drawing method, by default Vulkan is used + +There also also GUI options for controlling whether Skia is enabled. + +Note that many backends do not use Skia. E.g. on Linux it is necessary to also use +SAL_USE_VCLPLUGIN=gen . + +Skia drawing methods: +===================== + +Skia supports several methods to draw: +- Raster - CPU-based drawing (here primarily used for debugging) +- Vulkan - Vulkan-based GPU drawing, this is the default + +There are more (OpenGL, Metal on Mac, etc.), but (as of now) they are not supported by VCL. |