diff options
Diffstat (limited to 'src/plugins/platforms/wasm/qwasmcompositor.cpp')
-rw-r--r-- | src/plugins/platforms/wasm/qwasmcompositor.cpp | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/src/plugins/platforms/wasm/qwasmcompositor.cpp b/src/plugins/platforms/wasm/qwasmcompositor.cpp index e6a69c4814..6d211667be 100644 --- a/src/plugins/platforms/wasm/qwasmcompositor.cpp +++ b/src/plugins/platforms/wasm/qwasmcompositor.cpp @@ -37,6 +37,7 @@ #include <QtGui/qopenglcontext.h> #include <QtGui/qopenglfunctions.h> #include <QtGui/qopengltextureblitter.h> +#include <QtGui/qoffscreensurface.h> #include <QtGui/qpainter.h> #include <private/qpixmapcache_p.h> @@ -71,6 +72,28 @@ QWasmCompositor::QWasmCompositor(QWasmScreen *screen) QWasmCompositor::~QWasmCompositor() { delete m_frameBuffer; + destroy(); +} + +void QWasmCompositor::destroy() +{ + // Destroy OpenGL resources. This is done here in a separate function + // which can be called while screen() still returns a valid screen + // (which it might not, during destruction). A valid QScreen is + // a requirement for QOffscreenSurface on Wasm since the native + // context is tied to a single canvas. + if (m_context) { + QOffscreenSurface offScreenSurface(screen()->screen()); + offScreenSurface.setFormat(m_context->format()); + offScreenSurface.create(); + m_context->makeCurrent(&offScreenSurface); + for (QWasmWindow *window : m_windowStack) + window->destroy(); + m_blitter.reset(nullptr); + m_context.reset(nullptr); + } + + m_isEnabled = false; // prevent frame() from creating a new m_context } void QWasmCompositor::setEnabled(bool enabled) @@ -251,10 +274,13 @@ void QWasmCompositor::blit(QOpenGLTextureBlitter *blitter, QWasmScreen *screen, void QWasmCompositor::drawWindowContent(QOpenGLTextureBlitter *blitter, QWasmScreen *screen, QWasmWindow *window) { QWasmBackingStore *backingStore = window->backingStore(); + if (!backingStore) + return; QOpenGLTexture const *texture = backingStore->getUpdatedTexture(); - - blit(blitter, screen, texture, window->geometry()); + QPoint windowCanvasPosition = window->geometry().topLeft() - screen->geometry().topLeft(); + QRect windowCanvasGeometry = QRect(windowCanvasPosition, window->geometry().size()); + blit(blitter, screen, texture, windowCanvasGeometry); } QPalette QWasmCompositor::makeWindowPalette() @@ -650,7 +676,7 @@ void QWasmCompositor::frame() m_needComposit = false; - if (m_windowStack.empty() || !screen()) + if (!m_isEnabled || m_windowStack.empty() || !screen()) return; QWasmWindow *someWindow = nullptr; @@ -673,7 +699,9 @@ void QWasmCompositor::frame() m_context->create(); } - m_context->makeCurrent(someWindow->window()); + bool ok = m_context->makeCurrent(someWindow->window()); + if (!ok) + return; if (!m_blitter->isCreated()) m_blitter->create(); |