void DrawingBuffer::clear()
{
if (!m_context)
return;
m_context->makeContextCurrent();
#if USE(ACCELERATED_COMPOSITING)
clearPlatformLayer();
#endif
if (!m_size.isEmpty()) {
s_currentResourceUsePixels -= m_size.width() * m_size.height();
m_size = IntSize();
}
if (m_colorBuffer) {
m_context->deleteTexture(m_colorBuffer);
m_colorBuffer = 0;
}
if (m_frontColorBuffer) {
m_context->deleteTexture(m_frontColorBuffer);
m_frontColorBuffer = 0;
}
if (m_multisampleColorBuffer) {
m_context->deleteRenderbuffer(m_multisampleColorBuffer);
m_multisampleColorBuffer = 0;
}
if (m_depthStencilBuffer) {
m_context->deleteRenderbuffer(m_depthStencilBuffer);
m_depthStencilBuffer = 0;
}
if (m_depthBuffer) {
m_context->deleteRenderbuffer(m_depthBuffer);
m_depthBuffer = 0;
}
if (m_stencilBuffer) {
m_context->deleteRenderbuffer(m_stencilBuffer);
m_stencilBuffer = 0;
}
if (m_multisampleFBO) {
m_context->deleteFramebuffer(m_multisampleFBO);
m_multisampleFBO = 0;
}
if (m_fbo) {
m_context->deleteFramebuffer(m_fbo);
m_fbo = 0;
}
}
void DrawingBuffer::releaseResources()
{
if (m_context) {
m_context->makeContextCurrent();
clearPlatformLayer();
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_depthStencilBuffer)
m_context->deleteRenderbuffer(m_depthStencilBuffer);
if (m_depthBuffer)
m_context->deleteRenderbuffer(m_depthBuffer);
if (m_stencilBuffer)
m_context->deleteRenderbuffer(m_stencilBuffer);
if (m_multisampleFBO)
m_context->deleteFramebuffer(m_multisampleFBO);
if (m_fbo)
m_context->deleteFramebuffer(m_fbo);
m_context.clear();
}
setSize(IntSize());
m_colorBuffer = 0;
m_frontColorBuffer = 0;
m_multisampleColorBuffer = 0;
m_depthStencilBuffer = 0;
m_depthBuffer = 0;
m_stencilBuffer = 0;
m_multisampleFBO = 0;
m_fbo = 0;
m_contextEvictionManager.clear();
m_lastColorBuffer.clear();
m_recycledMailboxes.clear();
m_textureMailboxes.clear();
if (m_layer) {
GraphicsLayer::unregisterContentsLayer(m_layer->layer());
m_layer.clear();
}
}
void DrawingBuffer::beginDestruction()
{
ASSERT(!m_destructionInProgress);
m_destructionInProgress = true;
clearPlatformLayer();
while (!m_recycledMailboxQueue.isEmpty())
deleteMailbox(m_recycledMailboxQueue.takeLast());
if (m_multisampleFBO)
m_gl->DeleteFramebuffers(1, &m_multisampleFBO);
if (m_fbo)
m_gl->DeleteFramebuffers(1, &m_fbo);
if (m_multisampleRenderbuffer)
m_gl->DeleteRenderbuffers(1, &m_multisampleRenderbuffer);
if (m_depthStencilBuffer)
m_gl->DeleteRenderbuffers(1, &m_depthStencilBuffer);
if (m_colorBuffer.textureId) {
deleteChromiumImageForTexture(&m_colorBuffer);
m_gl->DeleteTextures(1, &m_colorBuffer.textureId);
}
setSize(IntSize());
m_colorBuffer = TextureInfo();
m_frontColorBuffer = FrontBufferInfo();
m_multisampleRenderbuffer = 0;
m_depthStencilBuffer = 0;
m_multisampleFBO = 0;
m_fbo = 0;
if (m_layer)
GraphicsLayer::unregisterContentsLayer(m_layer->layer());
}
