diff options
author | Chris Dalton <csmartdalton@google.com> | 2018-07-27 12:38:35 -0600 |
---|---|---|
committer | Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-07-27 19:04:46 +0000 |
commit | 49d14e98fe43fdff818e7571c1a61cd5045fedc0 (patch) | |
tree | 18d48cd1922c646b6dafa851fbe214c8904aef87 /src/sksl/SkSLGLSLCodeGenerator.cpp | |
parent | f4f6bbfadac327619a3832acad9c8afe06629b55 (diff) |
sksl: Add a "sk_Clockwise" built-in
This allows us to identify clockwise-winding triangles, in terms of
Skia device space, in all backends and with all render target origins.
Bug: skia:
Change-Id: I220e1c459e0129d1cc4dee6458ef94277fbedd21
Reviewed-on: https://skia-review.googlesource.com/142662
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Diffstat (limited to 'src/sksl/SkSLGLSLCodeGenerator.cpp')
-rw-r--r-- | src/sksl/SkSLGLSLCodeGenerator.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/sksl/SkSLGLSLCodeGenerator.cpp b/src/sksl/SkSLGLSLCodeGenerator.cpp index 3c697d8e4b..d08c9135e1 100644 --- a/src/sksl/SkSLGLSLCodeGenerator.cpp +++ b/src/sksl/SkSLGLSLCodeGenerator.cpp @@ -689,6 +689,9 @@ void GLSLCodeGenerator::writeVariableReference(const VariableReference& ref) { case SK_FRAGCOORD_BUILTIN: this->writeFragCoord(); break; + case SK_CLOCKWISE_BUILTIN: + this->write("gl_FrontFacing"); + break; case SK_VERTEXID_BUILTIN: this->write("gl_VertexID"); break; |