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QNX: Factor out blitHelper() function 

Change-Id: If4d671aae557065d502c3c134f50c89c621cb145
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
bb10
Thomas McGuire 2012-07-11 14:31:13 +02:00 committed by Qt by Nokia
parent 07de9df9ec
commit 2b2f5895ed
2 changed files with 30 additions and 30 deletions
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58
src/plugins/platforms/qnx/qqnxwindow.cpp
View File

@ -642,66 +642,64 @@ void QQnxWindow::updateZorder(int &topZorder)
childWindow->updateZorder(topZorder);
}
void QQnxWindow::copyBack(const QRegion &region, int dx, int dy, bool flush)
void QQnxWindow::blitHelper(QQnxBuffer &source, QQnxBuffer &target, const QPoint &sourceOffset,
const QPoint &targetOffset, const QRegion &region, bool flush)
{
qWindowDebug() << Q_FUNC_INFO << "window =" << window();
int result;
// Abort if previous buffer is invalid
if (m_previousBufferIndex == -1) {
return;
}
// Abort if nothing to copy
if (region.isEmpty()) {
return;
}
QQnxBuffer &currentBuffer = m_buffers[m_currentBufferIndex];
QQnxBuffer &previousBuffer = m_buffers[m_previousBufferIndex];
// Break down region into non-overlapping rectangles
QVector<QRect> rects = region.rects();
const QVector<QRect> rects = region.rects();
for (int i = rects.size() - 1; i >= 0; i--) {
// Clip rectangle to bounds of target
QRect rect = rects[i].intersected( currentBuffer.rect() );
const QRect rect = rects[i].intersected(target.rect());
if (rect.isEmpty())
continue;
// Setup blit operation
int attribs[] = { SCREEN_BLIT_SOURCE_X, rect.x(),
SCREEN_BLIT_SOURCE_Y, rect.y(),
int attribs[] = { SCREEN_BLIT_SOURCE_X, rect.x() + sourceOffset.x(),
SCREEN_BLIT_SOURCE_Y, rect.y() + sourceOffset.y(),
SCREEN_BLIT_SOURCE_WIDTH, rect.width(),
SCREEN_BLIT_SOURCE_HEIGHT, rect.height(),
SCREEN_BLIT_DESTINATION_X, rect.x() + dx,
SCREEN_BLIT_DESTINATION_Y, rect.y() + dy,
SCREEN_BLIT_DESTINATION_X, rect.x() + targetOffset.x(),
SCREEN_BLIT_DESTINATION_Y, rect.y() + targetOffset.y(),
SCREEN_BLIT_DESTINATION_WIDTH, rect.width(),
SCREEN_BLIT_DESTINATION_HEIGHT, rect.height(),
SCREEN_BLIT_END };
// Queue blit operation
errno = 0;
result = screen_blit(m_screenContext, currentBuffer.nativeBuffer(), previousBuffer.nativeBuffer(), attribs);
if (result != 0) {
const int result = screen_blit(m_screenContext, target.nativeBuffer(),
source.nativeBuffer(), attribs);
if (result != 0)
qFatal("QQnxWindow: failed to blit buffers, errno=%d", errno);
}
}
// Check if flush requested
if (flush) {
// Wait for all blits to complete
errno = 0;
result = screen_flush_blits(m_screenContext, SCREEN_WAIT_IDLE);
if (result != 0) {
const int result = screen_flush_blits(m_screenContext, SCREEN_WAIT_IDLE);
if (result != 0)
qFatal("QQnxWindow: failed to flush blits, errno=%d", errno);
}
// Buffer was modified outside the CPU
currentBuffer.invalidateInCache();
target.invalidateInCache();
}
}
void QQnxWindow::copyBack(const QRegion &region, int dx, int dy, bool flush)
{
qWindowDebug() << Q_FUNC_INFO << "window =" << window();
// Abort if previous buffer is invalid or if nothing to copy
if (m_previousBufferIndex == -1 || region.isEmpty())
return;
QQnxBuffer &currentBuffer = m_buffers[m_currentBufferIndex];
QQnxBuffer &previousBuffer = m_buffers[m_previousBufferIndex];
blitHelper(previousBuffer, currentBuffer, QPoint(0, 0), QPoint(dx, dy), region, flush);
}
int QQnxWindow::platformWindowFormatToNativeFormat(const QSurfaceFormat &format)
{
qWindowDebug() << Q_FUNC_INFO;

2
src/plugins/platforms/qnx/qqnxwindow.h
View File

@ -123,6 +123,8 @@ private:
void fetchBuffers();
void copyBack(const QRegion &region, int dx, int dy, bool flush=false);
void blitHelper(QQnxBuffer &source, QQnxBuffer &target, const QPoint &sourceOffset,
const QPoint &targetOffset, const QRegion &region, bool flush = false);
static int platformWindowFormatToNativeFormat(const QSurfaceFormat &format);