commit c67c31ced151b023fc56fe0f4692d64a1a81894c
author Brian Salomon <bsalomon@google.com> Thu Dec 06 10:00:03 2018 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Thu Dec 06 15:34:31 2018 +0000
tree 90421448d4da6421219d9dcba1ce1ecfe6ce1932
parent 23885d2133cf0e1b7c26da0e1cc166651fa8adf6

Revert "Revert "Mark wrapped textures imported into SkImages as "read only".""

This reverts commit ff4ccaa9fcfbcf29c476eda973febf4b2d6dc974.

Bug: skia:8509
Change-Id: If4a059d6e6e412ec1d6be2c70663d59c362e91d2
Reviewed-on: https://skia-review.googlesource.com/c/175249
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

include/gpu/GrSurface.h

diff --git a/include/gpu/GrSurface.h b/include/gpu/GrSurface.h
index bcd854f..3211a1e 100644
--- a/include/gpu/GrSurface.h
+++ b/include/gpu/GrSurface.h
@@ -65,6 +65,12 @@
     static size_t ComputeSize(GrPixelConfig config, int width, int height, int colorSamplesPerPixel,
                               GrMipMapped, bool useNextPow2 = false);
 
+    /**
+     * The pixel values of this surface cannot be modified (e.g. doesn't support write pixels or
+     * MIP map level regen).
+     */
+    bool readOnly() const { return fSurfaceFlags & GrInternalSurfaceFlags::kReadOnly; }
+
 protected:
     void setHasMixedSamples() {
         SkASSERT(this->asRenderTarget());
@@ -88,6 +94,11 @@
         return fSurfaceFlags & GrInternalSurfaceFlags::kGLRTFBOIDIs0;
     }
 
+    void setReadOnly() {
+        SkASSERT(!this->asRenderTarget());
+        fSurfaceFlags |= GrInternalSurfaceFlags::kReadOnly;
+    }
+
     // Methods made available via GrSurfacePriv
     bool hasPendingRead() const;
     bool hasPendingWrite() const;