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From 41a9c47ca820502d98039273f7465605464cdf9c Mon Sep 17 00:00:00 2001
From: Jani Hautakangas <jani.hautakangas@ixonos.com>
Date: Thu, 16 May 2013 09:52:07 +0300
Subject: [PATCH 18/23] QOpenGLPaintDevice sub-area support
Allows creating QOpenGLPaintDevice targetting sub-area
of binded framebuffer.
Upstream-Status: Pending
Change-Id: Ida2f079aa1ac0b87d36b54129e226399dbcdda80
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
src/gui/opengl/qopenglpaintdevice.cpp | 12 ++++++++++++
src/gui/opengl/qopenglpaintdevice.h | 2 ++
src/gui/opengl/qopenglpaintengine.cpp | 10 +++++++---
src/gui/opengl/qopenglpaintengine_p.h | 1 +
src/gui/opengl/qopengltextureglyphcache.cpp | 2 +-
5 files changed, 23 insertions(+), 4 deletions(-)
diff --git a/src/gui/opengl/qopenglpaintdevice.cpp b/src/gui/opengl/qopenglpaintdevice.cpp
index f0e7e49..fe9a30c 100644
--- a/src/gui/opengl/qopenglpaintdevice.cpp
+++ b/src/gui/opengl/qopenglpaintdevice.cpp
@@ -111,6 +111,7 @@ class QOpenGLPaintDevicePrivate
public:
QOpenGLPaintDevicePrivate(const QSize &size);
+ QPoint offset;
QSize size;
QOpenGLContext *ctx;
@@ -159,6 +160,12 @@ QOpenGLPaintDevice::QOpenGLPaintDevice(int width, int height)
{
}
+QOpenGLPaintDevice::QOpenGLPaintDevice(int x, int y, int width, int height)
+ : d_ptr(new QOpenGLPaintDevicePrivate(QSize(width, height)))
+{
+ d_ptr->offset = QPoint(x,y);
+}
+
/*!
Destroys the QOpenGLPaintDevice.
*/
@@ -228,6 +235,11 @@ QOpenGLContext *QOpenGLPaintDevice::context() const
return d_ptr->ctx;
}
+QPoint QOpenGLPaintDevice::offset() const
+{
+ return d_ptr->offset;
+}
+
/*!
Returns the pixel size of the paint device.
diff --git a/src/gui/opengl/qopenglpaintdevice.h b/src/gui/opengl/qopenglpaintdevice.h
index c05571c..01eb1bc 100644
--- a/src/gui/opengl/qopenglpaintdevice.h
+++ b/src/gui/opengl/qopenglpaintdevice.h
@@ -62,12 +62,14 @@ public:
QOpenGLPaintDevice();
explicit QOpenGLPaintDevice(const QSize &size);
QOpenGLPaintDevice(int width, int height);
+ QOpenGLPaintDevice(int x, int y, int width, int height);
virtual ~QOpenGLPaintDevice();
int devType() const { return QInternal::OpenGL; }
QPaintEngine *paintEngine() const;
QOpenGLContext *context() const;
+ QPoint offset() const;
QSize size() const;
void setSize(const QSize &size);
void setDevicePixelRatio(qreal devicePixelRatio);
diff --git a/src/gui/opengl/qopenglpaintengine.cpp b/src/gui/opengl/qopenglpaintengine.cpp
index 0782e42..52afc60 100644
--- a/src/gui/opengl/qopenglpaintengine.cpp
+++ b/src/gui/opengl/qopenglpaintengine.cpp
@@ -1978,7 +1978,10 @@ bool QOpenGL2PaintEngineEx::begin(QPaintDevice *pdev)
for (int i = 0; i < QT_GL_VERTEX_ARRAY_TRACKED_COUNT; ++i)
d->vertexAttributeArraysEnabledState[i] = false;
+ const QPoint offset = d->device->offset();
const QSize sz = d->device->size();
+ d->x = offset.x();
+ d->y = offset.y();
d->width = sz.width();
d->height = sz.height();
d->mode = BrushDrawingMode;
@@ -2066,7 +2069,7 @@ void QOpenGL2PaintEngineEx::ensureActive()
d->device->ensureActiveTarget();
d->transferMode(BrushDrawingMode);
- glViewport(0, 0, d->width, d->height);
+ glViewport(d->x, d->y, d->width, d->height);
d->needsSync = false;
d->lastMaskTextureUsed = 0;
d->shaderManager->setDirty();
@@ -2109,6 +2112,7 @@ void QOpenGL2PaintEngineExPrivate::updateClipScissorTest()
if (bounds == QRect(0, 0, width, height)) {
glDisable(GL_SCISSOR_TEST);
} else {
+ bounds = QRect(bounds.x(), bounds.y(), bounds.width(), bounds.height());
glEnable(GL_SCISSOR_TEST);
setScissor(bounds);
}
@@ -2117,14 +2121,14 @@ void QOpenGL2PaintEngineExPrivate::updateClipScissorTest()
void QOpenGL2PaintEngineExPrivate::setScissor(const QRect &rect)
{
- const int left = rect.left();
+ const int left = rect.left() + x;
const int width = rect.width();
int bottom = height - (rect.top() + rect.height());
if (device->paintFlipped()) {
bottom = rect.top();
}
+ bottom += y;
const int height = rect.height();
-
glScissor(left, bottom, width, height);
}
diff --git a/src/gui/opengl/qopenglpaintengine_p.h b/src/gui/opengl/qopenglpaintengine_p.h
index d51f0e5..0d4b38d 100644
--- a/src/gui/opengl/qopenglpaintengine_p.h
+++ b/src/gui/opengl/qopenglpaintengine_p.h
@@ -264,6 +264,7 @@ public:
QOpenGL2PaintEngineEx* q;
QOpenGLEngineShaderManager* shaderManager;
QOpenGLPaintDevice* device;
+ int x, y;
int width, height;
QOpenGLContext *ctx;
EngineMode mode;
diff --git a/src/gui/opengl/qopengltextureglyphcache.cpp b/src/gui/opengl/qopengltextureglyphcache.cpp
index 83f4075..ec29900 100644
--- a/src/gui/opengl/qopengltextureglyphcache.cpp
+++ b/src/gui/opengl/qopengltextureglyphcache.cpp
@@ -268,7 +268,7 @@ void QOpenGLTextureGlyphCache::resizeTextureData(int width, int height)
funcs.glBindFramebuffer(GL_FRAMEBUFFER, ctx->d_func()->current_fbo);
if (pex != 0) {
- glViewport(0, 0, pex->width, pex->height);
+ glViewport(pex->x, pex->y, pex->width, pex->height);
pex->updateClipScissorTest();
} else {
m_blitProgram->disableAttributeArray(int(QT_VERTEX_COORDS_ATTR));
--
1.8.3.2
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