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kwin/scene_xrender.cpp

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
Copyright (C) 2009 Fredrik Höglund <fredrik@kde.org>
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "scene_xrender.h"
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
#include "toplevel.h"
#include "client.h"
#include "composite.h"
#include "decorations.h"
#include "deleted.h"
#include "effects.h"
#include "main.h"
#include "overlaywindow.h"
#include "paintredirector.h"
#include "workspace.h"
#include "xcbutils.h"
#include "kwinxrenderutils.h"
#ifdef WAYLAND_FOUND
#include "wayland_backend.h"
#endif
#include <xcb/xfixes.h>
#include <QDebug>
#include <QtGui/QPainter>
#include <qmath.h>
namespace KWin
{
ScreenPaintData SceneXrender::screen_paint;
#define DOUBLE_TO_FIXED(d) ((xcb_render_fixed_t) ((d) * 65536))
#define FIXED_TO_DOUBLE(f) ((double) ((f) / 65536.0))
static xcb_render_pictformat_t findFormatForVisual(xcb_visualid_t visual)
{
static QHash<xcb_visualid_t, xcb_render_pictformat_t> s_cache;
if (xcb_render_pictformat_t format = s_cache.value(visual, 0)) {
return format;
}
if (!s_cache.isEmpty()) {
return 0;
}
ScopedCPointer<xcb_render_query_pict_formats_reply_t> formats(xcb_render_query_pict_formats_reply(
connection(), xcb_render_query_pict_formats_unchecked(connection()), NULL));
if (!formats) {
return 0;
}
int screen = QX11Info::appScreen();
for (xcb_render_pictscreen_iterator_t sit = xcb_render_query_pict_formats_screens_iterator(formats.data());
sit.rem;
--screen, xcb_render_pictscreen_next(&sit)) {
if (screen != 0) {
continue;
}
for (xcb_render_pictdepth_iterator_t dit = xcb_render_pictscreen_depths_iterator(sit.data);
dit.rem;
xcb_render_pictdepth_next(&dit)) {
for (xcb_render_pictvisual_iterator_t vit = xcb_render_pictdepth_visuals_iterator(dit.data);
vit.rem;
xcb_render_pictvisual_next(&vit)) {
s_cache.insert(vit.data->visual, vit.data->format);
}
}
}
return s_cache.value(visual, 0);
}
//****************************************
// XRenderBackend
//****************************************
XRenderBackend::XRenderBackend()
: m_buffer(XCB_RENDER_PICTURE_NONE)
, m_failed(false)
{
if (!Xcb::Extensions::self()->isRenderAvailable()) {
setFailed("No XRender extension available");
return;
}
if (!Xcb::Extensions::self()->isFixesRegionAvailable()) {
setFailed("No XFixes v3+ extension available");
return;
}
}
XRenderBackend::~XRenderBackend()
{
if (m_buffer) {
xcb_render_free_picture(connection(), m_buffer);
}
}
OverlayWindow* XRenderBackend::overlayWindow()
{
return NULL;
}
void XRenderBackend::showOverlay()
{
}
void XRenderBackend::setBuffer(xcb_render_picture_t buffer)
{
if (m_buffer != XCB_RENDER_PICTURE_NONE) {
xcb_render_free_picture(connection(), m_buffer);
}
m_buffer = buffer;
}
void XRenderBackend::setFailed(const QString& reason)
{
qCritical() << "Creating the XRender backend failed: " << reason;
m_failed = true;
}
void XRenderBackend::screenGeometryChanged(const QSize &size)
{
Q_UNUSED(size)
}
bool XRenderBackend::isLastFrameRendered() const
{
return true;
}
//****************************************
// X11XRenderBackend
//****************************************
X11XRenderBackend::X11XRenderBackend()
: XRenderBackend()
, m_overlayWindow(new OverlayWindow())
, m_front(XCB_RENDER_PICTURE_NONE)
, m_format(0)
{
init(true);
}
X11XRenderBackend::~X11XRenderBackend()
{
if (m_front) {
xcb_render_free_picture(connection(), m_front);
}
m_overlayWindow->destroy();
}
OverlayWindow* X11XRenderBackend::overlayWindow()
{
return m_overlayWindow.data();
}
void X11XRenderBackend::showOverlay()
{
if (m_overlayWindow->window()) // show the window only after the first pass, since
m_overlayWindow->show(); // that pass may take long
}
void X11XRenderBackend::init(bool createOverlay)
{
if (m_front != XCB_RENDER_PICTURE_NONE)
xcb_render_free_picture(connection(), m_front);
bool haveOverlay = createOverlay ? m_overlayWindow->create() : (m_overlayWindow->window() != XCB_WINDOW_NONE);
if (haveOverlay) {
m_overlayWindow->setup(XCB_WINDOW_NONE);
ScopedCPointer<xcb_get_window_attributes_reply_t> attribs(xcb_get_window_attributes_reply(connection(),
xcb_get_window_attributes_unchecked(connection(), m_overlayWindow->window()), NULL));
if (!attribs) {
setFailed("Failed getting window attributes for overlay window");
return;
}
m_format = findFormatForVisual(attribs->visual);
if (m_format == 0) {
setFailed("Failed to find XRender format for overlay window");
return;
}
m_front = xcb_generate_id(connection());
xcb_render_create_picture(connection(), m_front, m_overlayWindow->window(), m_format, 0, NULL);
} else {
// create XRender picture for the root window
m_format = findFormatForVisual(defaultScreen()->root_visual);
if (m_format == 0) {
setFailed("Failed to find XRender format for root window");
return; // error
}
m_front = xcb_generate_id(connection());
const uint32_t values[] = {XCB_SUBWINDOW_MODE_INCLUDE_INFERIORS};
xcb_render_create_picture(connection(), m_front, rootWindow(), m_format, XCB_RENDER_CP_SUBWINDOW_MODE, values);
}
createBuffer();
}
void X11XRenderBackend::createBuffer()
{
xcb_pixmap_t pixmap = xcb_generate_id(connection());
xcb_create_pixmap(connection(), Xcb::defaultDepth(), pixmap, rootWindow(), displayWidth(), displayHeight());
xcb_render_picture_t b = xcb_generate_id(connection());
xcb_render_create_picture(connection(), b, pixmap, m_format, 0, NULL);
xcb_free_pixmap(connection(), pixmap); // The picture owns the pixmap now
setBuffer(b);
}
void X11XRenderBackend::present(int mask, const QRegion &damage)
{
if (mask & Scene::PAINT_SCREEN_REGION) {
// Use the damage region as the clip region for the root window
XFixesRegion frontRegion(damage);
xcb_xfixes_set_picture_clip_region(connection(), m_front, frontRegion, 0, 0);
// copy composed buffer to the root window
xcb_xfixes_set_picture_clip_region(connection(), buffer(), XCB_XFIXES_REGION_NONE, 0, 0);
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_SRC, buffer(), XCB_RENDER_PICTURE_NONE,
m_front, 0, 0, 0, 0, 0, 0, displayWidth(), displayHeight());
xcb_xfixes_set_picture_clip_region(connection(), m_front, XCB_XFIXES_REGION_NONE, 0, 0);
xcb_flush(connection());
} else {
// copy composed buffer to the root window
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_SRC, buffer(), XCB_RENDER_PICTURE_NONE,
m_front, 0, 0, 0, 0, 0, 0, displayWidth(), displayHeight());
xcb_flush(connection());
}
}
void X11XRenderBackend::screenGeometryChanged(const QSize &size)
{
Q_UNUSED(size)
init(false);
}
bool X11XRenderBackend::usesOverlayWindow() const
{
return true;
}
//****************************************
// WaylandXRenderBackend
//****************************************
#ifdef WAYLAND_FOUND
static void handleFrameCallback(void *data, wl_callback *callback, uint32_t time)
{
Q_UNUSED(data)
Q_UNUSED(time)
reinterpret_cast<WaylandXRenderBackend*>(data)->lastFrameRendered();
if (callback) {
wl_callback_destroy(callback);
}
}
static const struct wl_callback_listener s_surfaceFrameListener = {
handleFrameCallback
};
WaylandXRenderBackend::WaylandXRenderBackend()
: m_shm(new Xcb::Shm)
, m_lastFrameRendered(true)
{
if (!m_shm->isValid()) {
setFailed("Could not create XShm");
}
if (m_shm->pixmapFormat() != XCB_IMAGE_FORMAT_Z_PIXMAP) {
setFailed("XShm pixmap does not have Z format");
}
init();
}
WaylandXRenderBackend::~WaylandXRenderBackend()
{
}
void WaylandXRenderBackend::init()
{
xcb_render_pictformat_t format = findFormatForVisual(defaultScreen()->root_visual);
if (format == 0) {
setFailed("Failed to find XRender format for root window");
return; // error
}
xcb_pixmap_t pixmap = xcb_generate_id(connection());
xcb_void_cookie_t cookie = xcb_shm_create_pixmap_checked(connection(), pixmap, rootWindow(),
displayWidth(), displayHeight(),
24, m_shm->segment(), 0);
// let's check whether the pixmap got created
ScopedCPointer<xcb_generic_error_t> error(xcb_request_check(connection(), cookie));
if (error) {
setFailed("Creating shm pixmap failed: " + QString::number(error->error_code));
return;
}
// create the render picture
xcb_render_picture_t b = xcb_generate_id(connection());
xcb_render_create_picture(connection(), b, pixmap, format, 0, NULL);
xcb_free_pixmap(connection(), pixmap); // The picture owns the pixmap now
setBuffer(b);
qDebug() << "Offscreen shm pixmap created";
}
void WaylandXRenderBackend::present(int mask, const QRegion &damage)
{
Q_UNUSED(mask)
// we need to sync
ScopedCPointer<xcb_get_input_focus_reply_t> sync(xcb_get_input_focus_reply(
connection(), xcb_get_input_focus_unchecked(connection()), NULL));
Wayland::WaylandBackend *wl = Wayland::WaylandBackend::self();
wl_buffer *buffer = wl->shmPool()->createBuffer(QSize(displayWidth(), displayHeight()),
displayWidth() * 4, m_shm->buffer());
if (!buffer) {
qDebug() << "Did not get a buffer";
return;
}
m_lastFrameRendered = false;
wl_surface *surface = wl->surface();
wl_callback *callback = wl_surface_frame(surface);
wl_callback_add_listener(callback, &s_surfaceFrameListener, this);
wl_surface_attach(surface, buffer, 0, 0);
Q_FOREACH (const QRect &rect, damage.rects()) {
wl_surface_damage(surface, rect.x(), rect.y(), rect.width(), rect.height());
}
wl_surface_commit(surface);
wl->dispatchEvents();
}
bool WaylandXRenderBackend::isLastFrameRendered() const
{
return m_lastFrameRendered;
}
void WaylandXRenderBackend::lastFrameRendered()
{
m_lastFrameRendered = true;
Compositor::self()->lastFrameRendered();
}
bool WaylandXRenderBackend::usesOverlayWindow() const
{
return false;
}
#endif
//****************************************
// SceneXrender
//****************************************
SceneXrender* SceneXrender::createScene()
{
QScopedPointer<XRenderBackend> backend;
#ifdef WAYLAND_FOUND
if (kwinApp()->shouldUseWaylandForCompositing()) {
backend.reset(new WaylandXRenderBackend);
if (backend->isFailed()) {
return NULL;
}
return new SceneXrender(backend.take());
}
#endif
backend.reset(new X11XRenderBackend);
if (backend->isFailed()) {
return NULL;
}
return new SceneXrender(backend.take());
}
SceneXrender::SceneXrender(XRenderBackend *backend)
: Scene(Workspace::self())
, m_backend(backend)
{
}
SceneXrender::~SceneXrender()
{
SceneXrender::Window::cleanup();
SceneXrender::EffectFrame::cleanup();
}
bool SceneXrender::initFailed() const
{
return false;
}
// the entry point for painting
qint64 SceneXrender::paint(QRegion damage, ToplevelList toplevels)
{
QElapsedTimer renderTimer;
renderTimer.start();
createStackingOrder(toplevels);
int mask = 0;
QRegion updateRegion, validRegion;
paintScreen(&mask, damage, QRegion(), &updateRegion, &validRegion);
m_backend->showOverlay();
m_backend->present(mask, updateRegion);
// do cleanup
clearStackingOrder();
return renderTimer.nsecsElapsed();
}
void SceneXrender::paintGenericScreen(int mask, ScreenPaintData data)
{
screen_paint = data; // save, transformations will be done when painting windows
Scene::paintGenericScreen(mask, data);
}
void SceneXrender::paintDesktop(int desktop, int mask, const QRegion &region, ScreenPaintData &data)
{
PaintClipper::push(region);
KWin::Scene::paintDesktop(desktop, mask, region, data);
PaintClipper::pop(region);
}
// fill the screen background
void SceneXrender::paintBackground(QRegion region)
{
xcb_render_color_t col = { 0, 0, 0, 0xffff }; // black
const QVector<xcb_rectangle_t> &rects = Xcb::regionToRects(region);
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, bufferPicture(), col, rects.count(), rects.data());
}
Scene::Window *SceneXrender::createWindow(Toplevel *toplevel)
{
return new Window(toplevel, this);
}
Scene::EffectFrame *SceneXrender::createEffectFrame(EffectFrameImpl *frame)
{
return new SceneXrender::EffectFrame(frame);
}
Shadow *SceneXrender::createShadow(Toplevel *toplevel)
{
return new SceneXRenderShadow(toplevel);
}
//****************************************
// SceneXrender::Window
//****************************************
XRenderPicture *SceneXrender::Window::s_tempPicture = 0;
QRect SceneXrender::Window::temp_visibleRect;
SceneXrender::Window::Window(Toplevel* c, SceneXrender *scene)
: Scene::Window(c)
, m_scene(scene)
, format(findFormatForVisual(c->visual()->visualid))
, alpha_cached_opacity(0.0)
{
}
SceneXrender::Window::~Window()
{
discardShape();
}
void SceneXrender::Window::cleanup()
{
delete s_tempPicture;
s_tempPicture = NULL;
}
// Maps window coordinates to screen coordinates
QRect SceneXrender::Window::mapToScreen(int mask, const WindowPaintData &data, const QRect &rect) const
{
QRect r = rect;
if (mask & PAINT_WINDOW_TRANSFORMED) {
// Apply the window transformation
r.moveTo(r.x() * data.xScale() + data.xTranslation(),
r.y() * data.yScale() + data.yTranslation());
r.setWidth(r.width() * data.xScale());
r.setHeight(r.height() * data.yScale());
}
// Move the rectangle to the screen position
r.translate(x(), y());
if (mask & PAINT_SCREEN_TRANSFORMED) {
// Apply the screen transformation
r.moveTo(r.x() * screen_paint.xScale() + screen_paint.xTranslation(),
r.y() * screen_paint.yScale() + screen_paint.yTranslation());
r.setWidth(r.width() * screen_paint.xScale());
r.setHeight(r.height() * screen_paint.yScale());
}
return r;
}
// Maps window coordinates to screen coordinates
QPoint SceneXrender::Window::mapToScreen(int mask, const WindowPaintData &data, const QPoint &point) const
{
QPoint pt = point;
if (mask & PAINT_WINDOW_TRANSFORMED) {
// Apply the window transformation
pt.rx() = pt.x() * data.xScale() + data.xTranslation();
pt.ry() = pt.y() * data.yScale() + data.yTranslation();
}
// Move the point to the screen position
pt += QPoint(x(), y());
if (mask & PAINT_SCREEN_TRANSFORMED) {
// Apply the screen transformation
pt.rx() = pt.x() * screen_paint.xScale() + screen_paint.xTranslation();
pt.ry() = pt.y() * screen_paint.yScale() + screen_paint.yTranslation();
}
return pt;
}
void SceneXrender::Window::prepareTempPixmap()
{
const QSize oldSize = temp_visibleRect.size();
temp_visibleRect = toplevel->visibleRect().translated(-toplevel->pos());
if (s_tempPicture && (oldSize.width() < temp_visibleRect.width() || oldSize.height() < temp_visibleRect.height())) {
delete s_tempPicture;
s_tempPicture = NULL;
scene_setXRenderOffscreenTarget(0); // invalidate, better crash than cause weird results for developers
}
if (!s_tempPicture) {
xcb_pixmap_t pix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), 32, pix, rootWindow(), temp_visibleRect.width(), temp_visibleRect.height());
s_tempPicture = new XRenderPicture(pix, 32);
xcb_free_pixmap(connection(), pix);
}
const xcb_render_color_t transparent = {0, 0, 0, 0};
const xcb_rectangle_t rect = {0, 0, uint16_t(temp_visibleRect.width()), uint16_t(temp_visibleRect.height())};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, *s_tempPicture, transparent, 1, &rect);
}
// paint the window
void SceneXrender::Window::performPaint(int mask, QRegion region, WindowPaintData data)
{
setTransformedShape(QRegion()); // maybe nothing will be painted
// check if there is something to paint
bool opaque = isOpaque() && qFuzzyCompare(data.opacity(), 1.0);
/* HACK: It seems this causes painting glitches, disable temporarily
if (( mask & PAINT_WINDOW_OPAQUE ) ^ ( mask & PAINT_WINDOW_TRANSLUCENT ))
{ // We are only painting either opaque OR translucent windows, not both
if ( mask & PAINT_WINDOW_OPAQUE && !opaque )
return; // Only painting opaque and window is translucent
if ( mask & PAINT_WINDOW_TRANSLUCENT && opaque )
return; // Only painting translucent and window is opaque
}*/
// Intersect the clip region with the rectangle the window occupies on the screen
if (!(mask & (PAINT_WINDOW_TRANSFORMED | PAINT_SCREEN_TRANSFORMED)))
region &= toplevel->visibleRect();
if (region.isEmpty())
return;
XRenderWindowPixmap *pixmap = windowPixmap<XRenderWindowPixmap>();
if (!pixmap || !pixmap->isValid()) {
return;
}
xcb_render_picture_t pic = pixmap->picture();
if (pic == XCB_RENDER_PICTURE_NONE) // The render format can be null for GL and/or Xv visuals
return;
toplevel->resetDamage();
// set picture filter
if (options->isXrenderSmoothScale()) { // only when forced, it's slow
if (mask & PAINT_WINDOW_TRANSFORMED)
filter = ImageFilterGood;
else if (mask & PAINT_SCREEN_TRANSFORMED)
filter = ImageFilterGood;
else
filter = ImageFilterFast;
} else
filter = ImageFilterFast;
// do required transformations
const QRect wr = mapToScreen(mask, data, QRect(0, 0, width(), height()));
QRect cr = QRect(toplevel->clientPos(), toplevel->clientSize()); // Client rect (in the window)
qreal xscale = 1;
qreal yscale = 1;
bool scaled = false;
Client *client = dynamic_cast<Client*>(toplevel);
Deleted *deleted = dynamic_cast<Deleted*>(toplevel);
const QRect decorationRect = toplevel->decorationRect();
if (((client && !client->noBorder()) || (deleted && !deleted->noBorder())) &&
decorationPlugin()->hasAlpha()) {
// decorated client
transformed_shape = decorationRect;
if (toplevel->shape()) {
// "xeyes" + decoration
transformed_shape -= cr;
transformed_shape += shape();
}
} else {
transformed_shape = shape();
}
if (toplevel->hasShadow())
transformed_shape |= toplevel->shadow()->shadowRegion();
xcb_render_transform_t xform = {
DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(1)
};
static xcb_render_transform_t identity = {
DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(1), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(1)
};
if (mask & PAINT_WINDOW_TRANSFORMED) {
xscale = data.xScale();
yscale = data.yScale();
}
if (mask & PAINT_SCREEN_TRANSFORMED) {
xscale *= screen_paint.xScale();
yscale *= screen_paint.yScale();
}
if (!qFuzzyCompare(xscale, 1.0) || !qFuzzyCompare(yscale, 1.0)) {
scaled = true;
xform.matrix11 = DOUBLE_TO_FIXED(1.0 / xscale);
xform.matrix22 = DOUBLE_TO_FIXED(1.0 / yscale);
// transform the shape for clipping in paintTransformedScreen()
QVector<QRect> rects = transformed_shape.rects();
for (int i = 0; i < rects.count(); ++i) {
QRect& r = rects[ i ];
r.setRect(qRound(r.x() * xscale), qRound(r.y() * yscale),
qRound(r.width() * xscale), qRound(r.height() * yscale));
}
transformed_shape.setRects(rects.constData(), rects.count());
}
transformed_shape.translate(mapToScreen(mask, data, QPoint(0, 0)));
PaintClipper pcreg(region); // clip by the region to paint
PaintClipper pc(transformed_shape); // clip by window's shape
const bool wantShadow = m_shadow && !m_shadow->shadowRegion().isEmpty();
// In order to obtain a pixel perfect rescaling
// we need to blit the window content togheter with
// decorations in a temporary pixmap and scale
// the temporary pixmap at the end.
// We should do this only if there is scaling and
// the window has border
// This solves a number of glitches and on top of this
// it optimizes painting quite a bit
const bool blitInTempPixmap = xRenderOffscreen() || (data.crossFadeProgress() < 1.0 && !opaque) ||
(scaled && (wantShadow || (client && !client->noBorder()) || (deleted && !deleted->noBorder())));
xcb_render_picture_t renderTarget = m_scene->bufferPicture();
if (blitInTempPixmap) {
if (scene_xRenderOffscreenTarget()) {
temp_visibleRect = toplevel->visibleRect().translated(-toplevel->pos());
renderTarget = *scene_xRenderOffscreenTarget();
} else {
prepareTempPixmap();
renderTarget = *s_tempPicture;
}
} else {
xcb_render_set_picture_transform(connection(), pic, xform);
if (filter == ImageFilterGood) {
setPictureFilter(pic, KWin::Scene::ImageFilterGood);
}
//BEGIN OF STUPID RADEON HACK
// This is needed to avoid hitting a fallback in the radeon driver.
// The Render specification states that sampling pixels outside the
// source picture results in alpha=0 pixels. This can be achieved by
// setting the border color to transparent black, but since the border
// color has the same format as the texture, it only works when the
// texture has an alpha channel. So the driver falls back to software
// when the repeat mode is RepeatNone, the picture has a non-identity
// transformation matrix, and doesn't have an alpha channel.
// Since we only scale the picture, we can work around this by setting
// the repeat mode to RepeatPad.
if (!window()->hasAlpha()) {
const uint32_t values[] = {XCB_RENDER_REPEAT_PAD};
xcb_render_change_picture(connection(), pic, XCB_RENDER_CP_REPEAT, values);
}
//END OF STUPID RADEON HACK
}
#define MAP_RECT_TO_TARGET(_RECT_) \
if (blitInTempPixmap) _RECT_.translate(-temp_visibleRect.topLeft()); else _RECT_ = mapToScreen(mask, data, _RECT_)
//BEGIN deco preparations
bool noBorder = true;
xcb_render_picture_t left = XCB_RENDER_PICTURE_NONE;
xcb_render_picture_t top = XCB_RENDER_PICTURE_NONE;
xcb_render_picture_t right = XCB_RENDER_PICTURE_NONE;
xcb_render_picture_t bottom = XCB_RENDER_PICTURE_NONE;
PaintRedirector *redirector = NULL;
QRect dtr, dlr, drr, dbr;
if (client || deleted) {
if (client && !client->noBorder()) {
redirector = client->decorationPaintRedirector();
noBorder = client->noBorder();
client->layoutDecorationRects(dlr, dtr, drr, dbr, Client::WindowRelative);
}
if (deleted && !deleted->noBorder()) {
noBorder = deleted->noBorder();
redirector = deleted->decorationPaintRedirector();
deleted->layoutDecorationRects(dlr, dtr, drr, dbr);
}
if (redirector) {
redirector->ensurePixmapsPainted();
left = redirector->leftDecoPixmap<xcb_render_picture_t>();
top = redirector->topDecoPixmap<xcb_render_picture_t>();
right = redirector->rightDecoPixmap<xcb_render_picture_t>();
bottom = redirector->bottomDecoPixmap<xcb_render_picture_t>();
}
if (!noBorder) {
MAP_RECT_TO_TARGET(dtr);
MAP_RECT_TO_TARGET(dlr);
MAP_RECT_TO_TARGET(drr);
MAP_RECT_TO_TARGET(dbr);
}
}
//END deco preparations
//BEGIN shadow preparations
QRect stlr, str, strr, srr, sbrr, sbr, sblr, slr;
SceneXRenderShadow* m_xrenderShadow = static_cast<SceneXRenderShadow*>(m_shadow);
if (wantShadow) {
m_xrenderShadow->layoutShadowRects(str, strr, srr, sbrr, sbr, sblr, slr, stlr);
MAP_RECT_TO_TARGET(stlr);
MAP_RECT_TO_TARGET(str);
MAP_RECT_TO_TARGET(strr);
MAP_RECT_TO_TARGET(srr);
MAP_RECT_TO_TARGET(sbrr);
MAP_RECT_TO_TARGET(sbr);
MAP_RECT_TO_TARGET(sblr);
MAP_RECT_TO_TARGET(slr);
}
//BEGIN end preparations
//BEGIN client preparations
QRect dr = cr;
if (blitInTempPixmap) {
dr.translate(-temp_visibleRect.topLeft());
} else {
dr = mapToScreen(mask, data, dr); // Destination rect
if (scaled) {
cr.moveLeft(cr.x() * xscale);
cr.moveTop(cr.y() * yscale);
}
}
const int clientRenderOp = (opaque || blitInTempPixmap) ? XCB_RENDER_PICT_OP_SRC : XCB_RENDER_PICT_OP_OVER;
//END client preparations
#undef MAP_RECT_TO_TARGET
for (PaintClipper::Iterator iterator; !iterator.isDone(); iterator.next()) {
#define RENDER_SHADOW_TILE(_TILE_, _RECT_) \
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, m_xrenderShadow->picture(SceneXRenderShadow::ShadowElement##_TILE_), \
shadowAlpha, renderTarget, 0, 0, 0, 0, _RECT_.x(), _RECT_.y(), _RECT_.width(), _RECT_.height())
//shadow
if (wantShadow) {
xcb_render_picture_t shadowAlpha = XCB_RENDER_PICTURE_NONE;
if (!opaque) {
shadowAlpha = xRenderBlendPicture(data.opacity());
}
RENDER_SHADOW_TILE(TopLeft, stlr);
RENDER_SHADOW_TILE(Top, str);
RENDER_SHADOW_TILE(TopRight, strr);
RENDER_SHADOW_TILE(Left, slr);
RENDER_SHADOW_TILE(Right, srr);
RENDER_SHADOW_TILE(BottomLeft, sblr);
RENDER_SHADOW_TILE(Bottom, sbr);
RENDER_SHADOW_TILE(BottomRight, sbrr);
}
#undef RENDER_SHADOW_TILE
// Paint the window contents
if (!(client && client->isShade())) {
xcb_render_picture_t clientAlpha = XCB_RENDER_PICTURE_NONE;
if (!opaque) {
clientAlpha = xRenderBlendPicture(data.opacity());
}
xcb_render_composite(connection(), clientRenderOp, pic, clientAlpha, renderTarget,
cr.x(), cr.y(), 0, 0, dr.x(), dr.y(), dr.width(), dr.height());
if (data.crossFadeProgress() < 1.0 && data.crossFadeProgress() > 0.0) {
XRenderWindowPixmap *previous = previousWindowPixmap<XRenderWindowPixmap>();
if (previous && previous != pixmap) {
static XRenderPicture cFadeAlpha(XCB_RENDER_PICTURE_NONE);
static xcb_render_color_t cFadeColor = {0, 0, 0, 0};
cFadeColor.alpha = uint16_t((1.0 - data.crossFadeProgress()) * 0xffff);
if (cFadeAlpha == XCB_RENDER_PICTURE_NONE) {
cFadeAlpha = xRenderFill(cFadeColor);
} else {
xcb_rectangle_t rect = {0, 0, 1, 1};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, cFadeAlpha, cFadeColor , 1, &rect);
}
if (previous->size() != pixmap->size()) {
xcb_render_transform_t xform2 = {
DOUBLE_TO_FIXED(FIXED_TO_DOUBLE(xform.matrix11) * previous->size().width() / pixmap->size().width()), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(FIXED_TO_DOUBLE(xform.matrix22) * previous->size().height() / pixmap->size().height()), DOUBLE_TO_FIXED(0),
DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(0), DOUBLE_TO_FIXED(1)
};
xcb_render_set_picture_transform(connection(), previous->picture(), xform2);
}
xcb_render_composite(connection(), opaque ? XCB_RENDER_PICT_OP_OVER : XCB_RENDER_PICT_OP_ATOP,
previous->picture(), cFadeAlpha, renderTarget,
cr.x(), cr.y(), 0, 0, dr.x(), dr.y(), dr.width(), dr.height());
if (previous->size() != pixmap->size()) {
xcb_render_set_picture_transform(connection(), previous->picture(), identity);
}
}
}
if (!opaque)
transformed_shape = QRegion();
}
#define RENDER_DECO_PART(_PART_, _RECT_) \
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, _PART_, decorationAlpha, renderTarget,\
0, 0, 0, 0, _RECT_.x(), _RECT_.y(), _RECT_.width(), _RECT_.height())
if (client || deleted) {
if (!noBorder) {
xcb_render_picture_t decorationAlpha = xRenderBlendPicture(data.opacity() * data.decorationOpacity());
RENDER_DECO_PART(top, dtr);
RENDER_DECO_PART(left, dlr);
RENDER_DECO_PART(right, drr);
RENDER_DECO_PART(bottom, dbr);
}
if (redirector) {
redirector->markAsRepainted();
}
}
#undef RENDER_DECO_PART
if (data.brightness() != 1.0) {
// fake brightness change by overlaying black
const float alpha = (1 - data.brightness()) * data.opacity();
xcb_rectangle_t rect;
if (blitInTempPixmap) {
rect.x = -temp_visibleRect.left();
rect.y = -temp_visibleRect.top();
rect.width = width();
rect.height = height();
} else {
rect.x = wr.x();
rect.y = wr.y();
rect.width = wr.width();
rect.height = wr.height();
}
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_OVER, renderTarget,
preMultiply(data.brightness() < 1.0 ? QColor(0,0,0,255*alpha) : QColor(255,255,255,-alpha*255)),
1, &rect);
}
if (blitInTempPixmap) {
const QRect r = mapToScreen(mask, data, temp_visibleRect);
xcb_render_set_picture_transform(connection(), *s_tempPicture, xform);
setPictureFilter(*s_tempPicture, filter);
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *s_tempPicture,
XCB_RENDER_PICTURE_NONE, m_scene->bufferPicture(),
0, 0, 0, 0, r.x(), r.y(), r.width(), r.height());
xcb_render_set_picture_transform(connection(), *s_tempPicture, identity);
}
}
if (scaled && !blitInTempPixmap) {
xcb_render_set_picture_transform(connection(), pic, identity);
if (filter == ImageFilterGood)
setPictureFilter(pic, KWin::Scene::ImageFilterFast);
if (!window()->hasAlpha()) {
const uint32_t values[] = {XCB_RENDER_REPEAT_NONE};
xcb_render_change_picture(connection(), pic, XCB_RENDER_CP_REPEAT, values);
}
}
if (xRenderOffscreen())
scene_setXRenderOffscreenTarget(*s_tempPicture);
}
void SceneXrender::Window::setPictureFilter(xcb_render_picture_t pic, Scene::ImageFilterType filter)
{
QByteArray filterName;
switch (filter) {
case KWin::Scene::ImageFilterFast:
filterName = QByteArray("fast");
break;
case KWin::Scene::ImageFilterGood:
filterName = QByteArray("good");
break;
}
xcb_render_set_picture_filter(connection(), pic, filterName.length(), filterName.constData(), 0, NULL);
}
WindowPixmap* SceneXrender::Window::createWindowPixmap()
{
return new XRenderWindowPixmap(this, format);
}
void SceneXrender::screenGeometryChanged(const QSize &size)
{
Scene::screenGeometryChanged(size);
m_backend->screenGeometryChanged(size);
}
//****************************************
// XRenderWindowPixmap
//****************************************
XRenderWindowPixmap::XRenderWindowPixmap(Scene::Window *window, xcb_render_pictformat_t format)
: WindowPixmap(window)
, m_picture(XCB_RENDER_PICTURE_NONE)
, m_format(format)
{
}
XRenderWindowPixmap::~XRenderWindowPixmap()
{
if (m_picture != XCB_RENDER_PICTURE_NONE) {
xcb_render_free_picture(connection(), m_picture);
}
}
void XRenderWindowPixmap::create()
{
if (isValid()) {
return;
}
KWin::WindowPixmap::create();
if (!isValid()) {
return;
}
m_picture = xcb_generate_id(connection());
xcb_render_create_picture(connection(), m_picture, pixmap(), m_format, 0, NULL);
}
//****************************************
// SceneXrender::EffectFrame
//****************************************
XRenderPicture *SceneXrender::EffectFrame::s_effectFrameCircle = NULL;
SceneXrender::EffectFrame::EffectFrame(EffectFrameImpl* frame)
: Scene::EffectFrame(frame)
{
m_picture = NULL;
m_textPicture = NULL;
m_iconPicture = NULL;
m_selectionPicture = NULL;
}
SceneXrender::EffectFrame::~EffectFrame()
{
delete m_picture;
delete m_textPicture;
delete m_iconPicture;
delete m_selectionPicture;
}
void SceneXrender::EffectFrame::cleanup()
{
delete s_effectFrameCircle;
s_effectFrameCircle = NULL;
}
void SceneXrender::EffectFrame::free()
{
delete m_picture;
m_picture = NULL;
delete m_textPicture;
m_textPicture = NULL;
delete m_iconPicture;
m_iconPicture = NULL;
delete m_selectionPicture;
m_selectionPicture = NULL;
}
void SceneXrender::EffectFrame::freeIconFrame()
{
delete m_iconPicture;
m_iconPicture = NULL;
}
void SceneXrender::EffectFrame::freeTextFrame()
{
delete m_textPicture;
m_textPicture = NULL;
}
void SceneXrender::EffectFrame::freeSelection()
{
delete m_selectionPicture;
m_selectionPicture = NULL;
}
void SceneXrender::EffectFrame::crossFadeIcon()
{
// TODO: implement me
}
void SceneXrender::EffectFrame::crossFadeText()
{
// TODO: implement me
}
void SceneXrender::EffectFrame::render(QRegion region, double opacity, double frameOpacity)
{
Q_UNUSED(region)
if (m_effectFrame->geometry().isEmpty()) {
return; // Nothing to display
}
// Render the actual frame
if (m_effectFrame->style() == EffectFrameUnstyled) {
renderUnstyled(effects->xrenderBufferPicture(), m_effectFrame->geometry(), opacity * frameOpacity);
} else if (m_effectFrame->style() == EffectFrameStyled) {
if (!m_picture) { // Lazy creation
updatePicture();
}
if (m_picture) {
qreal left, top, right, bottom;
m_effectFrame->frame().getMargins(left, top, right, bottom); // m_geometry is the inner geometry
QRect geom = m_effectFrame->geometry().adjusted(-left, -top, right, bottom);
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *m_picture,
XCB_RENDER_PICTURE_NONE, effects->xrenderBufferPicture(),
0, 0, 0, 0, geom.x(), geom.y(), geom.width(), geom.height());
}
}
if (!m_effectFrame->selection().isNull()) {
if (!m_selectionPicture) { // Lazy creation
const QPixmap pix = m_effectFrame->selectionFrame().framePixmap();
if (!pix.isNull()) // don't try if there's no content
m_selectionPicture = new XRenderPicture(m_effectFrame->selectionFrame().framePixmap().toImage());
}
if (m_selectionPicture) {
const QRect geom = m_effectFrame->selection();
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *m_selectionPicture,
XCB_RENDER_PICTURE_NONE, effects->xrenderBufferPicture(),
0, 0, 0, 0, geom.x(), geom.y(), geom.width(), geom.height());
}
}
XRenderPicture fill = xRenderBlendPicture(opacity);
// Render icon
if (!m_effectFrame->icon().isNull() && !m_effectFrame->iconSize().isEmpty()) {
QPoint topLeft(m_effectFrame->geometry().x(), m_effectFrame->geometry().center().y() - m_effectFrame->iconSize().height() / 2);
if (!m_iconPicture) // lazy creation
m_iconPicture = new XRenderPicture(m_effectFrame->icon().pixmap(m_effectFrame->iconSize()).toImage());
QRect geom = QRect(topLeft, m_effectFrame->iconSize());
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *m_iconPicture, fill,
effects->xrenderBufferPicture(),
0, 0, 0, 0, geom.x(), geom.y(), geom.width(), geom.height());
}
// Render text
if (!m_effectFrame->text().isEmpty()) {
if (!m_textPicture) { // Lazy creation
updateTextPicture();
}
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *m_textPicture, fill, effects->xrenderBufferPicture(),
0, 0, 0, 0, m_effectFrame->geometry().x(), m_effectFrame->geometry().y(),
m_effectFrame->geometry().width(), m_effectFrame->geometry().height());
}
}
void SceneXrender::EffectFrame::renderUnstyled(xcb_render_picture_t pict, const QRect &rect, qreal opacity)
{
const int roundness = 5;
const QRect area = rect.adjusted(-roundness, -roundness, roundness, roundness);
xcb_rectangle_t rects[3];
// center
rects[0].x = area.left();
rects[0].y = area.top() + roundness;
rects[0].width = area.width();
rects[0].height = area.height() - roundness * 2;
// top
rects[1].x = area.left() + roundness;
rects[1].y = area.top();
rects[1].width = area.width() - roundness * 2;
rects[1].height = roundness;
// bottom
rects[2].x = area.left() + roundness;
rects[2].y = area.top() + area.height() - roundness;
rects[2].width = area.width() - roundness * 2;
rects[2].height = roundness;
xcb_render_color_t color = {0, 0, 0, uint16_t(opacity * 0xffff)};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_OVER, pict, color, 3, rects);
if (!s_effectFrameCircle) {
// create the circle
const int diameter = roundness * 2;
xcb_pixmap_t pix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), 32, pix, rootWindow(), diameter, diameter);
s_effectFrameCircle = new XRenderPicture(pix, 32);
xcb_free_pixmap(connection(), pix);
// clear it with transparent
xcb_rectangle_t xrect = {0, 0, diameter, diameter};
xcb_render_color_t tranparent = {0, 0, 0, 0};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, *s_effectFrameCircle, tranparent, 1, &xrect);
static int num_segments = 80;
static qreal theta = 2 * M_PI / qreal(num_segments);
static qreal c = qCos(theta); //precalculate the sine and cosine
static qreal s = qSin(theta);
qreal t;
qreal x = roundness;//we start at angle = 0
qreal y = 0;
QVector<xcb_render_pointfix_t> points;
xcb_render_pointfix_t point;
point.x = DOUBLE_TO_FIXED(roundness);
point.y = DOUBLE_TO_FIXED(roundness);
points << point;
for (int ii = 0; ii <= num_segments; ++ii) {
point.x = DOUBLE_TO_FIXED(x + roundness);
point.y = DOUBLE_TO_FIXED(y + roundness);
points << point;
//apply the rotation matrix
t = x;
x = c * x - s * y;
y = s * t + c * y;
}
XRenderPicture fill = xRenderFill(Qt::black);
xcb_render_tri_fan(connection(), XCB_RENDER_PICT_OP_OVER, fill, *s_effectFrameCircle,
0, 0, 0, points.count(), points.constData());
}
// TODO: merge alpha mask with SceneXrender::Window::alphaMask
// alpha mask
xcb_pixmap_t pix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), 8, pix, rootWindow(), 1, 1);
XRenderPicture alphaMask(pix, 8);
xcb_free_pixmap(connection(), pix);
const uint32_t values[] = {true};
xcb_render_change_picture(connection(), alphaMask, XCB_RENDER_CP_REPEAT, values);
color.alpha = int(opacity * 0xffff);
xcb_rectangle_t xrect = {0, 0, 1, 1};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, alphaMask, color, 1, &xrect);
// TODO: replace by lambda
#define RENDER_CIRCLE(srcX, srcY, destX, destY) \
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *s_effectFrameCircle, alphaMask, \
pict, srcX, srcY, 0, 0, destX, destY, roundness, roundness)
RENDER_CIRCLE(0, 0, area.left(), area.top());
RENDER_CIRCLE(0, roundness, area.left(), area.top() + area.height() - roundness);
RENDER_CIRCLE(roundness, 0, area.left() + area.width() - roundness, area.top());
RENDER_CIRCLE(roundness, roundness,
area.left() + area.width() - roundness, area.top() + area.height() - roundness);
#undef RENDER_CIRCLE
}
void SceneXrender::EffectFrame::updatePicture()
{
delete m_picture;
m_picture = 0L;
if (m_effectFrame->style() == EffectFrameStyled) {
const QPixmap pix = m_effectFrame->frame().framePixmap();
if (!pix.isNull())
m_picture = new XRenderPicture(pix.toImage());
}
}
void SceneXrender::EffectFrame::updateTextPicture()
{
// Mostly copied from SceneOpenGL::EffectFrame::updateTextTexture() above
delete m_textPicture;
m_textPicture = 0L;
if (m_effectFrame->text().isEmpty()) {
return;
}
// Determine position on texture to paint text
QRect rect(QPoint(0, 0), m_effectFrame->geometry().size());
if (!m_effectFrame->icon().isNull() && !m_effectFrame->iconSize().isEmpty()) {
rect.setLeft(m_effectFrame->iconSize().width());
}
// If static size elide text as required
QString text = m_effectFrame->text();
if (m_effectFrame->isStatic()) {
QFontMetrics metrics(m_effectFrame->text());
text = metrics.elidedText(text, Qt::ElideRight, rect.width());
}
QPixmap pixmap(m_effectFrame->geometry().size());
pixmap.fill(Qt::transparent);
QPainter p(&pixmap);
p.setFont(m_effectFrame->font());
if (m_effectFrame->style() == EffectFrameStyled) {
p.setPen(m_effectFrame->styledTextColor());
} else {
// TODO: What about no frame? Custom color setting required
p.setPen(Qt::white);
}
p.drawText(rect, m_effectFrame->alignment(), text);
p.end();
m_textPicture = new XRenderPicture(pixmap.toImage());
}
SceneXRenderShadow::SceneXRenderShadow(Toplevel *toplevel)
:Shadow(toplevel)
{
for (int i=0; i<ShadowElementsCount; ++i) {
m_pictures[i] = NULL;
}
}
SceneXRenderShadow::~SceneXRenderShadow()
{
for (int i=0; i<ShadowElementsCount; ++i) {
delete m_pictures[i];
}
}
void SceneXRenderShadow::layoutShadowRects(QRect& top, QRect& topRight,
QRect& right, QRect& bottomRight,
QRect& bottom, QRect& bottomLeft,
QRect& left, QRect& topLeft)
{
WindowQuadList quads = shadowQuads();
if (quads.count() == 0) {
return;
}
WindowQuad topQuad = quads.select(WindowQuadShadowTop)[0];
WindowQuad topRightQuad = quads.select(WindowQuadShadowTopRight)[0];
WindowQuad topLeftQuad = quads.select(WindowQuadShadowTopLeft)[0];
WindowQuad leftQuad = quads.select(WindowQuadShadowLeft)[0];
WindowQuad rightQuad = quads.select(WindowQuadShadowRight)[0];
WindowQuad bottomQuad = quads.select(WindowQuadShadowBottom)[0];
WindowQuad bottomRightQuad = quads.select(WindowQuadShadowBottomRight)[0];
WindowQuad bottomLeftQuad = quads.select(WindowQuadShadowBottomLeft)[0];
top = QRect(topQuad.left(), topQuad.top(), (topQuad.right()-topQuad.left()), (topQuad.bottom()-topQuad.top()));
topLeft = QRect(topLeftQuad.left(), topLeftQuad.top(), (topLeftQuad.right()-topLeftQuad.left()), (topLeftQuad.bottom()-topLeftQuad.top()));
topRight = QRect(topRightQuad.left(), topRightQuad.top(), (topRightQuad.right()-topRightQuad.left()), (topRightQuad.bottom()-topRightQuad.top()));
left = QRect(leftQuad.left(), leftQuad.top(), (leftQuad.right()-leftQuad.left()), (leftQuad.bottom()-leftQuad.top()));
right = QRect(rightQuad.left(), rightQuad.top(), (rightQuad.right()-rightQuad.left()), (rightQuad.bottom()-rightQuad.top()));
bottom = QRect(bottomQuad.left(), bottomQuad.top(), (bottomQuad.right()-bottomQuad.left()), (bottomQuad.bottom()-bottomQuad.top()));
bottomLeft = QRect(bottomLeftQuad.left(), bottomLeftQuad.top(), (bottomLeftQuad.right()-bottomLeftQuad.left()), (bottomLeftQuad.bottom()-bottomLeftQuad.top()));
bottomRight = QRect(bottomRightQuad.left(), bottomRightQuad.top(), (bottomRightQuad.right()-bottomRightQuad.left()), (bottomRightQuad.bottom()-bottomRightQuad.top()));
}
void SceneXRenderShadow::buildQuads()
{
Shadow::buildQuads();
if (shadowQuads().count() == 0) {
return;
}
QRect stlr, str, strr, srr, sbrr, sbr, sblr, slr;
layoutShadowRects(str, strr, srr, sbrr, sbr, sblr, slr, stlr);
}
bool SceneXRenderShadow::prepareBackend()
{
const uint32_t values[] = {XCB_RENDER_REPEAT_NORMAL};
for (int i=0; i<ShadowElementsCount; ++i) {
delete m_pictures[i];
m_pictures[i] = new XRenderPicture(shadowPixmap(ShadowElements(i)).toImage());
xcb_render_change_picture(connection(), *m_pictures[i], XCB_RENDER_CP_REPEAT, values);
}
return true;
}
xcb_render_picture_t SceneXRenderShadow::picture(Shadow::ShadowElements element) const
{
if (!m_pictures[element]) {
return XCB_RENDER_PICTURE_NONE;
}
return *m_pictures[element];
}
#undef DOUBLE_TO_FIXED
#undef FIXED_TO_DOUBLE
} // namespace
#endif
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