void SnapHelperEffect::postPaintScreen()
{
effects->postPaintScreen();
if (m_timeline.currentValue() != 0.0) {
// Display the guide
if (effects->isOpenGLCompositing()) {
GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
vbo->reset();
vbo->setUseColor(true);
ShaderBinder binder(ShaderManager::ColorShader);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
QColor color;
color.setRedF(0.5);
color.setGreenF(0.5);
color.setBlueF(0.5);
color.setAlphaF(m_timeline.currentValue() * 0.5);
vbo->setColor(color);
glLineWidth(4.0);
QVector<float> verts;
verts.reserve(effects->numScreens() * 24);
for (int i = 0; i < effects->numScreens(); ++i) {
const QRect& rect = effects->clientArea(ScreenArea, i, 0);
int midX = rect.x() + rect.width() / 2;
int midY = rect.y() + rect.height() / 2 ;
int halfWidth = m_window->width() / 2;
int halfHeight = m_window->height() / 2;
// Center lines
verts << rect.x() + rect.width() / 2 << rect.y();
verts << rect.x() + rect.width() / 2 << rect.y() + rect.height();
verts << rect.x() << rect.y() + rect.height() / 2;
verts << rect.x() + rect.width() << rect.y() + rect.height() / 2;
// Window outline
// The +/- 2 is to prevent line overlap
verts << midX - halfWidth + 2 << midY - halfHeight;
verts << midX + halfWidth + 2 << midY - halfHeight;
verts << midX + halfWidth << midY - halfHeight + 2;
verts << midX + halfWidth << midY + halfHeight + 2;
verts << midX + halfWidth - 2 << midY + halfHeight;
verts << midX - halfWidth - 2 << midY + halfHeight;
verts << midX - halfWidth << midY + halfHeight - 2;
verts << midX - halfWidth << midY - halfHeight - 2;
}
vbo->setData(verts.count() / 2, 2, verts.data(), NULL);
vbo->render(GL_LINES);
glDisable(GL_BLEND);
glLineWidth(1.0);
}
if ( effects->compositingType() == XRenderCompositing ) {
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
for (int i = 0; i < effects->numScreens(); ++i) {
const QRect& rect = effects->clientArea( ScreenArea, i, 0 );
int midX = rect.x() + rect.width() / 2;
int midY = rect.y() + rect.height() / 2 ;
int halfWidth = m_window->width() / 2;
int halfHeight = m_window->height() / 2;
xcb_rectangle_t rects[6];
// Center lines
rects[0].x = rect.x() + rect.width() / 2 - 2;
rects[0].y = rect.y();
rects[0].width = 4;
rects[0].height = rect.height();
rects[1].x = rect.x();
rects[1].y = rect.y() + rect.height() / 2 - 2;
rects[1].width = rect.width();
rects[1].height = 4;
// Window outline
// The +/- 4 is to prevent line overlap
rects[2].x = midX - halfWidth + 4;
rects[2].y = midY - halfHeight;
rects[2].width = 2*halfWidth - 4;
rects[2].height = 4;
rects[3].x = midX + halfWidth - 4;
rects[3].y = midY - halfHeight + 4;
rects[3].width = 4;
rects[3].height = 2*halfHeight - 4;
rects[4].x = midX - halfWidth;
rects[4].y = midY + halfHeight - 4;
rects[4].width = 2*halfWidth - 4;
rects[4].height = 4;
rects[5].x = midX - halfWidth;
rects[5].y = midY - halfHeight;
rects[5].width = 4;
rects[5].height = 2*halfHeight - 4;
xcb_render_fill_rectangles(xcbConnection(), XCB_RENDER_PICT_OP_OVER, effects->xrenderBufferPicture(),
preMultiply(QColor(128, 128, 128, m_timeline.currentValue()*128)), 6, rects);
}
#endif
}
if (effects->compositingType() == QPainterCompositing) {
QPainter *painter = effects->scenePainter();
painter->save();
QColor color;
color.setRedF(0.5);
color.setGreenF(0.5);
color.setBlueF(0.5);
color.setAlphaF(m_timeline.currentValue() * 0.5);
QPen pen(color);
pen.setWidth(4);
painter->setPen(pen);
painter->setBrush(Qt::NoBrush);
for (int i = 0; i < effects->numScreens(); ++i) {
const QRect &rect = effects->clientArea(ScreenArea, i, 0);
// Center lines
painter->drawLine(rect.center().x(), rect.y(), rect.center().x(), rect.y() + rect.height());
painter->drawLine(rect.x(), rect.center().y(), rect.x() + rect.width(), rect.center().y());
// window outline
QRect windowRect(rect.center(), m_window->geometry().size());
painter->drawRect(windowRect.translated(-windowRect.width()/2, -windowRect.height()/2));
}
painter->restore();
}
} else if (m_window && !m_active) {
if (m_window->isDeleted())
m_window->unrefWindow();
m_window = NULL;
}
}
XRenderPicture xRenderFill(const QColor &c)
{
XRenderColor xc = preMultiply(c);
return xRenderFill(&xc);
}
// 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())) &&
true) {
// 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 const 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;
QRect dtr, dlr, drr, dbr;
const SceneXRenderDecorationRenderer *renderer = nullptr;
if (client) {
if (client && !client->noBorder()) {
if (client->isDecorated()) {
SceneXRenderDecorationRenderer *r = static_cast<SceneXRenderDecorationRenderer*>(client->decoratedClient()->renderer());
if (r) {
r->render();
renderer = r;
}
}
noBorder = client->noBorder();
client->layoutDecorationRects(dlr, dtr, drr, dbr);
}
}
if (deleted && !deleted->noBorder()) {
renderer = static_cast<const SceneXRenderDecorationRenderer*>(deleted->decorationRenderer());
noBorder = deleted->noBorder();
deleted->layoutDecorationRects(dlr, dtr, drr, dbr);
}
if (renderer) {
left = renderer->picture(SceneXRenderDecorationRenderer::DecorationPart::Left);
top = renderer->picture(SceneXRenderDecorationRenderer::DecorationPart::Top);
right = renderer->picture(SceneXRenderDecorationRenderer::DecorationPart::Right);
bottom = renderer->picture(SceneXRenderDecorationRenderer::DecorationPart::Bottom);
}
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();
}
if (client || deleted) {
if (!noBorder) {
xcb_render_picture_t decorationAlpha = xRenderBlendPicture(data.opacity());
auto renderDeco = [decorationAlpha, renderTarget](xcb_render_picture_t deco, const QRect &rect) {
if (deco == XCB_RENDER_PICTURE_NONE) {
return;
}
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, deco, decorationAlpha, renderTarget,
0, 0, 0, 0, rect.x(), rect.y(), rect.width(), rect.height());
};
renderDeco(top, dtr);
renderDeco(left, dlr);
renderDeco(right, drr);
renderDeco(bottom, dbr);
}
}
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);
}
/* m_preMultiply is used o multiply on the left or on the right
* M' = mat x M (if m_preMultiply) or M' = M x Mat (if not m_preMultiply)
* \param mat Matrix to concatenate.
*/
void TMatrix3D::concatTransform(TMatrix3D mat) {
if ( m_preMultiply )
preMultiply(mat.m_Matrix);
else
postMultiply(mat.m_Matrix);
}
/* m_preMultiply is used o multiply on the left or on the right
* M' = mat x M (if m_preMultiply) or M' = M x Mat (if not m_preMultiply)
* \param mat Matrix (RenderMan RtMatrix) to concatenate.
*/
void TMatrix3D::concatTransform(RtMatrix mat) {
if ( m_preMultiply )
preMultiply(mat);
else
postMultiply(mat);
}
/* Premultiplication is used by the implementation of the RenderMan interface to concatenate transformations.
* M' = mat x M
* \param mat Matrix to concatenate on the left.
*/
void TMatrix3D::preMultiply(TMatrix3D mat) {
preMultiply(mat.m_Matrix);
}
Quaternion& Quaternion::rotate(float angle, float x, float y, float z)
{
return preMultiply(rotation(angle, x, y, z));
}
