fixed sksl static ifs to work for CircleEffect

static ifs (and switches) in .fp files are a bit tricky, because they
aren't necessarily static when the CPP file is being produced. They
become static when the CPP file produces the final SkSL; at this point
the final values of the 'in' variables are known.

This change permits 'deferred' static ifs and switches. The initial
compilation (.fp -> .cpp) passes the @if / @switch through, and then
the final compilation (.cpp's generated SkSL -> GLSL or whatever)
enforces the static test.

Bug: skia:
Change-Id: I0087dfe1725c8fd350507ac77f64db1d82659cdf
Reviewed-on: https://skia-review.googlesource.com/23403
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/sksl/SkSLCPPCodeGenerator.h b/src/sksl/SkSLCPPCodeGenerator.h
index 0f6da5f5c4..7f60563e51 100644
--- a/src/sksl/SkSLCPPCodeGenerator.h
+++ b/src/sksl/SkSLCPPCodeGenerator.h
@@ -41,6 +41,10 @@ private:
 
     String getSamplerHandle(const Variable& var);
 
+    void writeIfStatement(const IfStatement& s) override;
+
+    void writeSwitchStatement(const SwitchStatement& s) override;
+
     void writeFunctionCall(const FunctionCall& c) override;
 
     void writeFunction(const FunctionDefinition& f) override;