Add 4.20 as a GLSL output version.

GLSL 4.20 adds support for image functions which will be used in forthcoming changes.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4833

Change-Id: I8cab511d95f04b45faaf916628148117b8be2128
Reviewed-on: https://skia-review.googlesource.com/4833
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index ed3c38180e..d1c1162a9e 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -622,6 +622,14 @@ const char* get_glsl_version_decl_string(GrGLStandard standard, GrGLSLGeneration
             } else {
                 return "#version 400 compatibility\n";
             }
+        case k420_GrGLSLGeneration:
+            SkASSERT(kGL_GrGLStandard == standard);
+            if (isCoreProfile) {
+                return "#version 420\n";
+            }
+            else {
+                return "#version 420 compatibility\n";
+            }
         case k310es_GrGLSLGeneration:
             SkASSERT(kGLES_GrGLStandard == standard);
             return "#version 310 es\n";