From 15341a284e78651d2b47b89753044f8d6e7eda0a Mon Sep 17 00:00:00 2001 From: jvanverth Date: Mon, 10 Oct 2016 09:18:23 -0700 Subject: Revert of Turned on SkSL->GLSL compiler (patchset #47 id:1200001 of https://codereview.chromium.org/2288033003/ ) Reason for revert: Looks like it introduces new static initializers, and it's failing the Chrome roll. Original issue's description: > Turned on SkSL->GLSL compiler > GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288033003 > > Committed: https://skia.googlesource.com/skia/+/9b0fe3d125f237d9884732a48414fa85fc71b4e3 > Committed: https://skia.googlesource.com/skia/+/b12b3c6908c62c908b3680be01e3b5bfd30de310 > Committed: https://skia.googlesource.com/skia/+/f008b0a59f45c0d4bea3e66faf3b01805009ec89 > Committed: https://skia.googlesource.com/skia/+/08b2ccf398e2b81bc05d2c105837e5419899469b TBR=benjaminwagner@google.com,bsalomon@google.com,egdaniel@google.com,ethannicholas@google.com # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Review-Url: https://codereview.chromium.org/2403083002 --- src/sksl/README | 35 ----------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 src/sksl/README (limited to 'src/sksl/README') diff --git a/src/sksl/README b/src/sksl/README deleted file mode 100644 index 1427c21926..0000000000 --- a/src/sksl/README +++ /dev/null @@ -1,35 +0,0 @@ -Overview -======== - -SkSL ("Skia Shading Language") is a variant of GLSL which is used as Skia's -internal shading language. SkSL is, at its heart, a single standardized version -of GLSL which avoids all of the various version and dialect differences found -in GLSL "in the wild", but it does bring a few of its own changes to the table. - -Skia uses the SkSL compiler to convert SkSL code to GLSL, GLSL ES, or SPIR-V -before handing it over to the graphics driver. - -Differences from GLSL -===================== - -SkSL is based on GLSL 4.5. For the most part, write SkSL exactly as you would -desktop GLSL, and the SkSL compiler will take care of version and dialect -differences (for instance, you always use "in" and "out", and skslc will handle -translating them to "varying" and "attribute" as appropriate). Be aware of the -following differences between SkSL and GLSL: - -* no #version or "precision" statement is required, and they will be ignored if - present -* the output color is sk_FragColor (do not declare it) -* lowp, mediump, and highp are always permitted (but will only be respected if - you run on a GLES device) -* you do not need to include ".0" to make a number a float (meaning that - "vec2(x, y) * 4" is perfectly legal in SkSL, unlike GLSL where it would often - 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 -* some built-in functions and one or two rarely-used language features are not - yet supported (sorry!) - -SkSL is still under development, and is expected to diverge further from GLSL -over time. -- cgit v1.2.3