bd91b2362a
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
#include <mbgl/gl/headless_backend.hpp>
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#include <QOffscreenSurface>
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#include <QOpenGLContext>
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#include <cassert>
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namespace mbgl {
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namespace gl {
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class QtBackendImpl final : public HeadlessBackend::Impl {
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public:
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QtBackendImpl() {
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// QtBackendImpl must be created in the main/GUI thread on platforms
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// that have a QWindow-based QOffscreenSurface.
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context.create();
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surface.create();
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}
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~QtBackendImpl() = default;
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gl::ProcAddress getExtensionFunctionPointer(const char* name) {
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QOpenGLContext* thisContext = QOpenGLContext::currentContext();
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return thisContext->getProcAddress(name);
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}
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void activateContext() { context.makeCurrent(&surface); }
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void deactivateContext() { context.doneCurrent(); }
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bool glNeedsActiveContextOnDestruction() const { return true; }
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private:
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QOpenGLContext context;
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QOffscreenSurface surface;
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};
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void HeadlessBackend::createImpl() {
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assert(!impl);
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impl = std::make_unique<QtBackendImpl>();
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}
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} // namespace gl
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} // namespace mbgl
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