With ES3, enable both ES2 and ES3 external image extensions

Bug: skia:7713
Change-Id: If06c0368e91c33bbac9e7715227d619c4834684f
Reviewed-on: https://skia-review.googlesource.com/121884
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/gpu/GrShaderCaps.h b/include/gpu/GrShaderCaps.h
index b6afe3934f..d8f4d95eb6 100644
--- a/include/gpu/GrShaderCaps.h
+++ b/include/gpu/GrShaderCaps.h
@@ -176,11 +176,20 @@ public:
         return fSecondaryOutputExtensionString;
     }
 
+    // This returns the name of an extension that must be enabled in the shader to support external
+    // textures. In some cases, two extensions must be enabled - the second extension is returned
+    // by secondExternalTextureExtensionString(). If that function returns nullptr, then only one
+    // extension is required.
     const char* externalTextureExtensionString() const {
         SkASSERT(this->externalTextureSupport());
         return fExternalTextureExtensionString;
     }
 
+    const char* secondExternalTextureExtensionString() const {
+        SkASSERT(this->externalTextureSupport());
+        return fSecondExternalTextureExtensionString;
+    }
+
     const char* texelBufferExtensionString() const {
         SkASSERT(this->texelBufferSupport());
         return fTexelBufferExtensionString;
@@ -279,6 +288,7 @@ private:
     const char* fFragCoordConventionsExtensionString;
     const char* fSecondaryOutputExtensionString;
     const char* fExternalTextureExtensionString;
+    const char* fSecondExternalTextureExtensionString;
     const char* fTexelBufferExtensionString;
     const char* fNoPerspectiveInterpolationExtensionString;
     const char* fImageLoadStoreExtensionString;