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| author |  Ethan Nicholas <ethannicholas@google.com> | 2017-02-07 17:28:31 -0500 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-02-09 14:48:18 +0000 |
| commit | 6f223283661c1ddc4a5334d2464804c6b6ba3ffa (patch) | |
| tree | ea9a73a68bc283bea25ed317c870668ab99f1823 /src/sksl/README | |
| parent | 9eae62c039304b4c315d0ba343c7cb209221cf45 (diff) | |
skslc type constructor cleanups
BUG=skia:
Change-Id: I87108b5e107419d99c996ef032eda512a68451ab
Reviewed-on: https://skia-review.googlesource.com/8117
Commit-Queue: Greg Daniel <egdaniel@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Diffstat (limited to 'src/sksl/README')
| -rw-r--r-- | src/sksl/README | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/sksl/README b/src/sksl/README index d78953f595..98103fa64f 100644 --- a/src/sksl/README +++ b/src/sksl/README @@ -41,6 +41,9 @@ following differences between SkSL and GLSL: have to be expressed "vec2(x, y) * 4.0". There is no performance penalty for this, as the number is converted to a float at compile time) * type suffixes on numbers (1.0f, 0xFFu) are both unnecessary and unsupported +* creating a smaller vector from a larger vector (e.g. vec2(vec3(1))) is + intentionally disallowed, as it is just a wordier way of performing a swizzle. + Use swizzles instead. * Use texture() instead of textureProj(), e.g. texture(sampler2D, vec3) is equivalent to GLSL's textureProj(sampler2D, vec3) * some built-in functions and one or two rarely-used language features are not |