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authorMorten Johan Sørvig <morten.sorvig@digia.com>2015-03-20 13:46:43 +0100
committerShawn Rutledge <shawn.rutledge@qt.io>2016-10-05 11:51:55 +0000
commit9182797dec1897cda4e2e0368a16ddbd5c18b031 (patch)
tree69190471a8a481de8c1650900a9f42feef02edb2 /src
parent4d375f3f2b95bfcb322402df3525db6cc7a723ce (diff)
Canvas: Implement high-DPI render mode
Scale the canvas image and texture buffer by the target devicePixelRatio. Task-number: QTBUG-37095 Change-Id: Ic432b278caa5c85cf3487d3108967cf3fcd2fa48 Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Diffstat (limited to 'src')
-rw-r--r--src/quick/items/context2d/qquickcontext2dtexture.cpp12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/quick/items/context2d/qquickcontext2dtexture.cpp b/src/quick/items/context2d/qquickcontext2dtexture.cpp
index 5ac971dc7d..78c526b299 100644
--- a/src/quick/items/context2d/qquickcontext2dtexture.cpp
+++ b/src/quick/items/context2d/qquickcontext2dtexture.cpp
@@ -538,6 +538,9 @@ QPaintDevice* QQuickContext2DFBOTexture::beginPainting()
{
QQuickContext2DTexture::beginPainting();
+ const qreal devicePixelRatio = (m_item && m_item->window()) ?
+ m_item->window()->effectiveDevicePixelRatio() : qApp->devicePixelRatio();
+
if (m_canvasWindow.size().isEmpty()) {
delete m_fbo;
delete m_multisampledFbo;
@@ -552,7 +555,7 @@ QPaintDevice* QQuickContext2DFBOTexture::beginPainting()
delete m_paint_device;
m_paint_device = 0;
- m_fboSize = npotAdjustedSize(m_canvasWindow.size());
+ m_fboSize = npotAdjustedSize(m_canvasWindow.size() * devicePixelRatio);
m_canvasWindowChanged = false;
if (doMultisampling()) {
@@ -590,6 +593,7 @@ QPaintDevice* QQuickContext2DFBOTexture::beginPainting()
QOpenGLPaintDevice *gl_device = new QOpenGLPaintDevice(m_fbo->size());
gl_device->setPaintFlipped(true);
gl_device->setSize(m_fbo->size());
+ gl_device->setDevicePixelRatio(devicePixelRatio);
m_paint_device = gl_device;
}
@@ -694,8 +698,12 @@ QPaintDevice* QQuickContext2DImageTexture::beginPainting()
if (m_canvasWindow.size().isEmpty())
return 0;
+ const qreal devicePixelRatio = (m_item && m_item->window()) ?
+ m_item->window()->effectiveDevicePixelRatio() : qApp->devicePixelRatio();
+
if (m_canvasWindowChanged) {
- m_image = QImage(m_canvasWindow.size(), QImage::Format_ARGB32_Premultiplied);
+ m_image = QImage(m_canvasWindow.size() * devicePixelRatio, QImage::Format_ARGB32_Premultiplied);
+ m_image.setDevicePixelRatio(devicePixelRatio);
m_image.fill(0x00000000);
m_canvasWindowChanged = false;
}