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ported upstream mozilla esr60 changes: bug1515052, bug1539219, bug1547757, bug1555523

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This commit is contained in:
Roy Tam 2019-06-22 09:48:24 +08:00
commit bc81a6d5f5
12 changed files with 49 additions and 43 deletions
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8
dom/canvas/WebGLExtensionVertexArray.cpp
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@ -25,7 +25,7 @@ WebGLExtensionVertexArray::~WebGLExtensionVertexArray()
already_AddRefed<WebGLVertexArray>
WebGLExtensionVertexArray::CreateVertexArrayOES()
{
if (mIsLost)
if (mIsLost || !mContext)
return nullptr;
return mContext->CreateVertexArray();
@ -34,7 +34,7 @@ WebGLExtensionVertexArray::CreateVertexArrayOES()
void
WebGLExtensionVertexArray::DeleteVertexArrayOES(WebGLVertexArray* array)
{
if (mIsLost)
if (mIsLost || !mContext)
return;
mContext->DeleteVertexArray(array);
@ -43,7 +43,7 @@ WebGLExtensionVertexArray::DeleteVertexArrayOES(WebGLVertexArray* array)
bool
WebGLExtensionVertexArray::IsVertexArrayOES(const WebGLVertexArray* array)
{
if (mIsLost)
if (mIsLost || !mContext)
return false;
return mContext->IsVertexArray(array);
@ -52,7 +52,7 @@ WebGLExtensionVertexArray::IsVertexArrayOES(const WebGLVertexArray* array)
void
WebGLExtensionVertexArray::BindVertexArrayOES(WebGLVertexArray* array)
{
if (mIsLost)
if (mIsLost || !mContext)
return;
mContext->BindVertexArray(array);