Source/core/html/HTMLCanvasElement.cpp - Issue 251023004: WebGL: Free temporary GPU resources held by inactive or hidden WebGL.

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Unified Diff: Source/core/html/HTMLCanvasElement.cpp

Issue 251023004: WebGL: Free temporary GPU resources held by inactive or hidden WebGL. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: add a layout test Created 6 years, 5 months ago

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« LayoutTests/fast/canvas/webgl/webgl-composite-modes-tabswitching.html ('K') | « LayoutTests/fast/canvas/webgl/webgl-composite-modes-tabswitching-expected.txt ('k') | Source/core/html/canvas/CanvasRenderingContext.h » ('j') | no next file with comments »
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Index: Source/core/html/HTMLCanvasElement.cpp

diff --git a/Source/core/html/HTMLCanvasElement.cpp b/Source/core/html/HTMLCanvasElement.cpp

index bff1d0678e104fb06abbebdc0c4de0344297ea9e..80bfc3112a75235d2a1458a52fd19114b2c75bc9 100644

--- a/Source/core/html/HTMLCanvasElement.cpp

+++ b/Source/core/html/HTMLCanvasElement.cpp

@@ -650,16 +650,14 @@ AffineTransform HTMLCanvasElement::baseTransform() const

void HTMLCanvasElement::didChangeVisibilityState(PageVisibilityState visibility)

{

- if (hasImageBuffer()) {

- bool hidden = visibility != PageVisibilityStateVisible;

- if (hidden) {

- clearCopiedImage();

- if (is3D()) {

- discardImageBuffer();

- }

- if (hasImageBuffer()) {

- m_imageBuffer->setIsHidden(hidden);

+ if (!m_context)

+ return;

+ bool hidden = visibility != PageVisibilityStateVisible;

+ m_context->setIsHidden(hidden);

+ if (hidden) {

+ clearCopiedImage();

+ if (is3D()) {

+ discardImageBuffer();

}