Source/platform/graphics/gpu/DrawingBuffer.cpp - Issue 163773007: WebGL: Transfer ownership of WebGraphicsContext3D from WebGLRenderingContext to DrawingBuffer.

Unified Diff: Source/platform/graphics/gpu/DrawingBuffer.cpp

Issue 163773007: WebGL: Transfer ownership of WebGraphicsContext3D from WebGLRenderingContext to DrawingBuffer. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@correct_webgl_destroy

Patch Set: Rebase to upstream Created 6 years, 10 months ago

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Index: Source/platform/graphics/gpu/DrawingBuffer.cpp

diff --git a/Source/platform/graphics/gpu/DrawingBuffer.cpp b/Source/platform/graphics/gpu/DrawingBuffer.cpp

index 1478ff8fcd888762da886c401ba65ab1b2823ffc..77f8ac2532c1c0c0982377bb77e0e7cfe63ace1a 100644

--- a/Source/platform/graphics/gpu/DrawingBuffer.cpp

+++ b/Source/platform/graphics/gpu/DrawingBuffer.cpp

@@ -77,9 +77,10 @@ private:

Platform3DObject m_oldTextureUnitZeroId;

};

-PassRefPtr<DrawingBuffer> DrawingBuffer::create(blink::WebGraphicsContext3D* context, const IntSize& size, PreserveDrawingBuffer preserve, PassRefPtr<ContextEvictionManager> contextEvictionManager)

+PassRefPtr<DrawingBuffer> DrawingBuffer::create(PassOwnPtr<blink::WebGraphicsContext3D> context, const IntSize& size, PreserveDrawingBuffer preserve, PassRefPtr<ContextEvictionManager> contextEvictionManager)

{

- Extensions3DUtil extensionsUtil(context);

+ ASSERT(context);

+ Extensions3DUtil extensionsUtil(context.get());

bool multisampleSupported = extensionsUtil.supportsExtension("GL_CHROMIUM_framebuffer_multisample")

&& extensionsUtil.supportsExtension("GL_OES_rgb8_rgba8");

if (multisampleSupported) {

@@ -90,12 +91,13 @@ PassRefPtr<DrawingBuffer> DrawingBuffer::create(blink::WebGraphicsContext3D* con

if (packedDepthStencilSupported)

extensionsUtil.ensureExtensionEnabled("GL_OES_packed_depth_stencil");

- RefPtr<DrawingBuffer> drawingBuffer = adoptRef(new DrawingBuffer(context, size, multisampleSupported, packedDepthStencilSupported, preserve, contextEvictionManager));

+ RefPtr<DrawingBuffer> drawingBuffer = adoptRef(new DrawingBuffer(context, multisampleSupported, packedDepthStencilSupported, preserve, contextEvictionManager));

+ if (!drawingBuffer->initialize(size))

+ return PassRefPtr<DrawingBuffer>();

return drawingBuffer.release();

}

-DrawingBuffer::DrawingBuffer(blink::WebGraphicsContext3D* context,

- const IntSize& size,

+DrawingBuffer::DrawingBuffer(PassOwnPtr<blink::WebGraphicsContext3D> context,

bool multisampleExtensionSupported,

bool packedDepthStencilExtensionSupported,

PreserveDrawingBuffer preserve,

@@ -124,12 +126,12 @@ DrawingBuffer::DrawingBuffer(blink::WebGraphicsContext3D* context,

, m_colorFormat(0)

, m_internalRenderbufferFormat(0)

, m_maxTextureSize(0)

+ , m_sampleCount(0)

dshwang 2014/03/04 09:54:28 I change from m_sampleCount(4) to m_sampleCount(0)

Ken Russell (switch to Gerrit) 2014/03/04 12:35:09 That's fine, and clearer.

, m_packAlignment(4)

, m_contextEvictionManager(contextEvictionManager)

{

// Used by browser tests to detect the use of a DrawingBuffer.

TRACE_EVENT_INSTANT0("test_gpu", "DrawingBufferCreation");

- initialize(size);

}

DrawingBuffer::~DrawingBuffer()

@@ -156,12 +158,12 @@ void DrawingBuffer::markLayerComposited()

blink::WebGraphicsContext3D* DrawingBuffer::context()

{

- return m_context;

+ return m_context.get();

}

bool DrawingBuffer::prepareMailbox(blink::WebExternalTextureMailbox* outMailbox, blink::WebExternalBitmap* bitmap)

{

- if (!m_context || !m_contentsChanged)

+ if (!m_contentsChanged)

return false;

m_context->makeContextCurrent();

@@ -182,7 +184,7 @@ bool DrawingBuffer::prepareMailbox(blink::WebExternalTextureMailbox* outMailbox,

// We must restore the texture binding since creating new textures,

// consuming and producing mailboxes changes it.

- ScopedTextureUnit0BindingRestorer restorer(m_context, m_activeTextureUnit, m_texture2DBinding);

+ ScopedTextureUnit0BindingRestorer restorer(m_context.get(), m_activeTextureUnit, m_texture2DBinding);

// First try to recycle an old buffer.

RefPtr<MailboxInfo> frontColorBufferMailbox = recycledMailbox();

@@ -245,7 +247,7 @@ void DrawingBuffer::mailboxReleased(const blink::WebExternalTextureMailbox& mail

PassRefPtr<DrawingBuffer::MailboxInfo> DrawingBuffer::recycledMailbox()

{

- if (!m_context || m_recycledMailboxes.isEmpty())

+ if (m_recycledMailboxes.isEmpty())

return PassRefPtr<MailboxInfo>();

RefPtr<MailboxInfo> mailboxInfo = m_recycledMailboxes.last().release();

@@ -275,11 +277,10 @@ PassRefPtr<DrawingBuffer::MailboxInfo> DrawingBuffer::createNewMailbox(unsigned

return returnMailbox.release();

}

-void DrawingBuffer::initialize(const IntSize& size)

+bool DrawingBuffer::initialize(const IntSize& size)

{

- ASSERT(m_context);

m_attributes = m_context->getContextAttributes();

- Extensions3DUtil extensionsUtil(m_context);

+ Extensions3DUtil extensionsUtil(m_context.get());

if (m_attributes.alpha) {

m_internalColorFormat = GL_RGBA;

@@ -312,12 +313,12 @@ void DrawingBuffer::initialize(const IntSize& size)

else

m_context->framebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_colorBuffer, 0);

createSecondaryBuffers();

- reset(size);

+ return reset(size);

}

bool DrawingBuffer::copyToPlatformTexture(blink::WebGraphicsContext3D* context, Platform3DObject texture, GLenum internalFormat, GLenum destType, GLint level, bool premultiplyAlpha, bool flipY)

{

- if (!m_context || !m_context->makeContextCurrent())

+ if (!m_context->makeContextCurrent())

return false;

if (m_contentsChanged) {

if (m_multisampleMode != None) {

@@ -363,9 +364,6 @@ Platform3DObject DrawingBuffer::framebuffer() const

blink::WebLayer* DrawingBuffer::platformLayer()

{

- if (!m_context)

- return 0;

if (!m_layer) {

m_layer = adoptPtr(blink::Platform::current()->compositorSupport()->createExternalTextureLayer(this));

@@ -380,7 +378,7 @@ blink::WebLayer* DrawingBuffer::platformLayer()

void DrawingBuffer::paintCompositedResultsToCanvas(ImageBuffer* imageBuffer)

{

- if (!m_context || !m_context->makeContextCurrent() || m_context->getGraphicsResetStatusARB() != GL_NO_ERROR)

+ if (!m_context->makeContextCurrent() || m_context->getGraphicsResetStatusARB() != GL_NO_ERROR)

return;

if (!imageBuffer)

@@ -421,40 +419,37 @@ void DrawingBuffer::clearPlatformLayer()

if (m_layer)

m_layer->clearTexture();

- if (m_context)

- m_context->flush();

+ m_context->flush();

}

void DrawingBuffer::releaseResources()

{

- if (m_context) {

- m_context->makeContextCurrent();

+ m_context->makeContextCurrent();

- clearPlatformLayer();

+ clearPlatformLayer();

- for (size_t i = 0; i < m_textureMailboxes.size(); i++)

- m_context->deleteTexture(m_textureMailboxes[i]->textureId);

+ for (size_t i = 0; i < m_textureMailboxes.size(); i++)

+ m_context->deleteTexture(m_textureMailboxes[i]->textureId);

- if (m_multisampleColorBuffer)

- m_context->deleteRenderbuffer(m_multisampleColorBuffer);

+ if (m_multisampleColorBuffer)

+ m_context->deleteRenderbuffer(m_multisampleColorBuffer);

- if (m_depthStencilBuffer)

- m_context->deleteRenderbuffer(m_depthStencilBuffer);

+ if (m_depthStencilBuffer)

+ m_context->deleteRenderbuffer(m_depthStencilBuffer);

- if (m_depthBuffer)

- m_context->deleteRenderbuffer(m_depthBuffer);

+ if (m_depthBuffer)

+ m_context->deleteRenderbuffer(m_depthBuffer);

- if (m_stencilBuffer)

- m_context->deleteRenderbuffer(m_stencilBuffer);

+ if (m_stencilBuffer)

+ m_context->deleteRenderbuffer(m_stencilBuffer);

- if (m_multisampleFBO)

- m_context->deleteFramebuffer(m_multisampleFBO);

+ if (m_multisampleFBO)

+ m_context->deleteFramebuffer(m_multisampleFBO);

- if (m_fbo)

- m_context->deleteFramebuffer(m_fbo);

+ if (m_fbo)

+ m_context->deleteFramebuffer(m_fbo);

- m_context = 0;

- }

+ m_context.clear();

setSize(IntSize());

@@ -479,9 +474,6 @@ void DrawingBuffer::releaseResources()

unsigned DrawingBuffer::createColorTexture(const IntSize& size)

{

- if (!m_context)

- return 0;

unsigned offscreenColorTexture = m_context->createTexture();

if (!offscreenColorTexture)

return 0;

@@ -598,9 +590,6 @@ void DrawingBuffer::resizeDepthStencil(const IntSize& size)

void DrawingBuffer::clearFramebuffers(GLbitfield clearMask)

{

- if (!m_context)

- return;

// We will clear the multisample FBO, but we also need to clear the non-multisampled buffer.

if (m_multisampleFBO) {

m_context->bindFramebuffer(GL_FRAMEBUFFER, m_fbo);

@@ -668,11 +657,9 @@ IntSize DrawingBuffer::adjustSizeWithContextEviction(const IntSize& size, bool&

return adjustedSize;

}

-void DrawingBuffer::reset(const IntSize& newSize)

+bool DrawingBuffer::reset(const IntSize& newSize)

{

- if (!m_context)

- return;

+ ASSERT(!newSize.isEmpty());

IntSize adjustedSize;

bool evictContext = false;

bool isNewContext = m_size.isEmpty();

@@ -682,7 +669,7 @@ void DrawingBuffer::reset(const IntSize& newSize)

adjustedSize = adjustSize(newSize);

if (adjustedSize.isEmpty())

- return;

+ return false;

if (evictContext)

m_contextEvictionManager->forciblyLoseOldestContext("WARNING: WebGL contexts have exceeded the maximum allowed backbuffer area. Oldest context will be lost.");

@@ -700,7 +687,7 @@ void DrawingBuffer::reset(const IntSize& newSize)

setSize(adjustedSize);

if (adjustedSize.isEmpty())

- return;

+ return false;

}

m_context->disable(GL_SCISSOR_TEST);

@@ -720,13 +707,11 @@ void DrawingBuffer::reset(const IntSize& newSize)

}

clearFramebuffers(clearMask);

+ return true;

}

void DrawingBuffer::commit(long x, long y, long width, long height)

{

- if (!m_context)

- return;

if (width < 0)

width = m_size.width();

if (height < 0)

@@ -754,7 +739,7 @@ void DrawingBuffer::commit(long x, long y, long width, long height)

void DrawingBuffer::restoreFramebufferBinding()

{

- if (!m_context || !m_framebufferBinding)

+ if (!m_framebufferBinding)

return;

m_context->bindFramebuffer(GL_FRAMEBUFFER, m_framebufferBinding);

@@ -767,9 +752,6 @@ bool DrawingBuffer::multisample() const

void DrawingBuffer::bind()

{

- if (!m_context)

- return;

m_context->bindFramebuffer(GL_FRAMEBUFFER, m_multisampleFBO ? m_multisampleFBO : m_fbo);

}

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