Verified Commit 54e2a23a authored by Lee Salzman's avatar Lee Salzman Committed by ma1
Browse files

Bug 2045185. a=RyanVM DONTBUILD 

Differential Revision: https://phabricator.services.mozilla.com/D307130
parent 4ceae3b0

gfx/2d/DrawTargetSkia.cpp

+7 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include "skia/src/core/SkWriteBuffer.h"

#include "skia/src/shaders/SkEmptyShader.h"

#include "Blur.h"

#include "DataSurfaceHelpers.h"

#include "Logging.h"

#include "Tools.h"

#include "PathHelpers.h"
@@ -1814,12 +1815,16 @@ bool DrawTargetSkia::Init(const IntSize& aSize, SurfaceFormat aFormat) { 
  }

  SkSurfaceProps props(0, GetSkPixelGeometry());



  size_t bufSize = BufferSizeFromStrideAndHeight(stride.value(), info.height());

  if (!bufSize) {

    return false;

  }



  if (aFormat == SurfaceFormat::A8) {

    // Skia does not fully allocate the last row according to stride.

    // Since some of our algorithms (i.e. blur) depend on this, we must allocate

    // the bitmap pixels manually.

    CheckedInt<size_t> size = stride;

    size *= info.height();

    CheckedInt<size_t> size = bufSize;

    // We need to leave room for an additional 3 bytes for a potential overrun

    // in our blurring code.

    size += 3;