diff options
Diffstat (limited to 'src/plugins/platforms/wasm')
-rw-r--r-- | src/plugins/platforms/wasm/qwasmopenglcontext.cpp | 19 | ||||
-rw-r--r-- | src/plugins/platforms/wasm/qwasmopenglcontext.h | 1 |
2 files changed, 16 insertions, 4 deletions
diff --git a/src/plugins/platforms/wasm/qwasmopenglcontext.cpp b/src/plugins/platforms/wasm/qwasmopenglcontext.cpp index fbf700518e..c122335a57 100644 --- a/src/plugins/platforms/wasm/qwasmopenglcontext.cpp +++ b/src/plugins/platforms/wasm/qwasmopenglcontext.cpp @@ -62,6 +62,16 @@ QWasmOpenGLContext::~QWasmOpenGLContext() } } +bool QWasmOpenGLContext::isOpenGLVersionSupported(QSurfaceFormat format) +{ + // Version check: support WebGL 1 and 2: + // (ES) 2.0 -> WebGL 1.0 + // (ES) 3.0 -> WebGL 2.0 + // [we don't expect that new WebGL versions will be created] + return ((format.majorVersion() == 2 && format.minorVersion() == 0) || + (format.majorVersion() == 3 && format.minorVersion() == 0)); +} + bool QWasmOpenGLContext::maybeCreateEmscriptenContext(QPlatformSurface *surface) { // Native emscripten/WebGL contexts are tied to a single screen/canvas. The first @@ -92,10 +102,8 @@ EMSCRIPTEN_WEBGL_CONTEXT_HANDLE QWasmOpenGLContext::createEmscriptenContext(cons attributes.failIfMajorPerformanceCaveat = false; attributes.antialias = true; attributes.enableExtensionsByDefault = true; - - if (format.majorVersion() == 3) { - attributes.majorVersion = 2; - } + attributes.majorVersion = format.majorVersion() - 1; + attributes.minorVersion = format.minorVersion(); // WebGL doesn't allow separate attach buffers to STENCIL_ATTACHMENT and DEPTH_ATTACHMENT // we need both or none @@ -149,6 +157,9 @@ bool QWasmOpenGLContext::isSharing() const bool QWasmOpenGLContext::isValid() const { + if (!(isOpenGLVersionSupported(m_requestedFormat))) + return false; + // Note: we get isValid() calls before we see the surface and can // create a native context, so no context is also a valid state. return !m_context || !emscripten_is_webgl_context_lost(m_context); diff --git a/src/plugins/platforms/wasm/qwasmopenglcontext.h b/src/plugins/platforms/wasm/qwasmopenglcontext.h index d27007e8ea..cf84379c36 100644 --- a/src/plugins/platforms/wasm/qwasmopenglcontext.h +++ b/src/plugins/platforms/wasm/qwasmopenglcontext.h @@ -51,6 +51,7 @@ public: QFunctionPointer getProcAddress(const char *procName) override; private: + static bool isOpenGLVersionSupported(QSurfaceFormat format); bool maybeCreateEmscriptenContext(QPlatformSurface *surface); static EMSCRIPTEN_WEBGL_CONTEXT_HANDLE createEmscriptenContext(const QString &canvasId, QSurfaceFormat format); |