Multi-string shaders

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/1c3c2d83364ee228e0751df0e1b9c161c0ba8c1e

Review URL: https://codereview.chromium.org/929503002

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gpu/gl/builders/GrGLProgramBuilder.h b/src/gpu/gl/builders/GrGLProgramBuilder.h
index 37908f9971..46d2816c52 100644
--- a/src/gpu/gl/builders/GrGLProgramBuilder.h
+++ b/src/gpu/gl/builders/GrGLProgramBuilder.h
@@ -356,7 +356,12 @@ protected:
     };
     class AutoStageAdvance {
     public:
-        AutoStageAdvance(GrGLProgramBuilder* pb) : fPB(pb) { fPB->reset(); }
+        AutoStageAdvance(GrGLProgramBuilder* pb)
+            : fPB(pb) {
+            fPB->reset();
+            // Each output to the fragment processor gets its own code section
+            fPB->fFS.nextStage();
+        }
         ~AutoStageAdvance() { fPB->exitStage(); }
     private:
         GrGLProgramBuilder* fPB;