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winrt: Use ANGLE sub-buffer swap on Windows Phone

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This allows the plugin to communicate the swap region to ANGLE and avoid
glitches when the orientation changes.

Task-number: QTBUG-44333
Change-Id: I40240cbcb3aaec92dbf4a82f4957965e92b9c3da
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
This commit is contained in:
Andrew Knight 2015-05-03 20:52:15 +03:00 committed by Andrew Knight
parent a34e9ebc1b
commit 00a341daa7
2 changed files with 15 additions and 0 deletions
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14
src/plugins/platforms/winrt/qwinrteglcontext.cpp
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@ -33,6 +33,9 @@
#include "qwinrteglcontext.h"
#define EGL_EGLEXT_PROTOTYPES
#include "EGL/eglext.h"
QT_BEGIN_NAMESPACE
QWinRTEGLContext::QWinRTEGLContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display, EGLSurface surface, EGLConfig config)
@ -40,6 +43,17 @@ QWinRTEGLContext::QWinRTEGLContext(const QSurfaceFormat &format, QPlatformOpenGL
{
}
void QWinRTEGLContext::swapBuffers(QPlatformSurface *surface)
{
#ifdef Q_OS_WINPHONE
const QSize size = surface->surface()->size();
eglPostSubBufferNV(eglDisplay(), eglSurfaceForPlatformSurface(surface),
0, 0, size.width(), size.height());
#else
eglSwapBuffers(eglDisplay(), eglSurfaceForPlatformSurface(surface));
#endif
}
EGLSurface QWinRTEGLContext::eglSurfaceForPlatformSurface(QPlatformSurface *surface)
{
if (surface->surface()->surfaceClass() == QSurface::Window) {

1
src/plugins/platforms/winrt/qwinrteglcontext.h
View File

@ -43,6 +43,7 @@ class QWinRTEGLContext : public QEGLPlatformContext
public:
explicit QWinRTEGLContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display, EGLSurface surface, EGLConfig config);
void swapBuffers(QPlatformSurface *surface) Q_DECL_OVERRIDE;
QFunctionPointer getProcAddress(const QByteArray &procName) Q_DECL_OVERRIDE;
protected: