commit ab32f656538d2586190e6a4ef05e764dfa48ef49
author Brian Salomon <bsalomon@google.com> Fri May 10 14:24:50 2019 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Fri May 10 19:13:07 2019 +0000
tree 166dc469d6d0f8cc69e885ffc68d82692e3e1b45
parent 6e407986cd3b108d51d7c45596b0f9792dd21371

Add SkSurface::asyncReadPixels()

Initial version. Current limitations: No Metal support, no color space
conversions, for each src color type only one dst color type is legal (
which may or may not be the src color type), no alpha type conversions.

Bug: skia:8962

Change-Id: I6f046a32342b8f5ffb1799d67d7ba15c250ef9bf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212981
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

src/gpu/mtl/GrMtlGpuCommandBuffer.h

diff --git a/src/gpu/mtl/GrMtlGpuCommandBuffer.h b/src/gpu/mtl/GrMtlGpuCommandBuffer.h
index 5a6bc36..6f85603 100644
--- a/src/gpu/mtl/GrMtlGpuCommandBuffer.h
+++ b/src/gpu/mtl/GrMtlGpuCommandBuffer.h
@@ -33,7 +33,11 @@
               const SkIPoint& dstPoint) override {
         fGpu->copySurface(fTexture, fOrigin, src, srcOrigin, srcRect, dstPoint);
     }
-
+    void transferFrom(const SkIRect& srcRect, GrColorType bufferColorType,
+                      GrGpuBuffer* transferBuffer, size_t offset) override {
+        fGpu->transferPixelsFrom(fTexture, srcRect.fLeft, srcRect.fTop, srcRect.width(),
+                                 srcRect.height(), bufferColorType, transferBuffer, offset);
+    }
     void insertEventMarker(const char* msg) override {}
 
 private:
@@ -62,7 +66,8 @@
         // TODO: this could be more efficient
         state->doUpload(upload);
     }
-
+    void transferFrom(const SkIRect& srcRect, GrColorType bufferColorType,
+                      GrGpuBuffer* transferBuffer, size_t offset) override;
     void copy(GrSurface* src, GrSurfaceOrigin srcOrigin, const SkIRect& srcRect,
               const SkIPoint& dstPoint) override;