void QSGDefaultImageNode::updateGeometry()
{
Q_ASSERT(!m_targetRect.isEmpty());
const QSGTexture *t = m_material.texture();
if (!t) {
QSGGeometry *g = geometry();
g->allocate(4);
g->setDrawingMode(GL_TRIANGLE_STRIP);
memset(g->vertexData(), 0, g->sizeOfVertex() * 4);
} else {
QRectF sourceRect = t->normalizedTextureSubRect();
QRectF innerSourceRect(sourceRect.x() + m_innerSourceRect.x() * sourceRect.width(),
sourceRect.y() + m_innerSourceRect.y() * sourceRect.height(),
m_innerSourceRect.width() * sourceRect.width(),
m_innerSourceRect.height() * sourceRect.height());
bool hasMargins = m_targetRect != m_innerTargetRect;
int floorLeft = qFloor(m_subSourceRect.left());
int ceilRight = qCeil(m_subSourceRect.right());
int floorTop = qFloor(m_subSourceRect.top());
int ceilBottom = qCeil(m_subSourceRect.bottom());
int hTiles = ceilRight - floorLeft;
int vTiles = ceilBottom - floorTop;
bool hasTiles = hTiles != 1 || vTiles != 1;
bool fullTexture = innerSourceRect == QRectF(0, 0, 1, 1);
#ifdef QT_OPENGL_ES_2
QOpenGLContext *ctx = QOpenGLContext::currentContext();
bool npotSupported = ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::NPOTTextureRepeat);
QSize size = t->textureSize();
bool isNpot = !isPowerOfTwo(size.width()) || !isPowerOfTwo(size.height());
bool wrapSupported = npotSupported || !isNpot;
#else
bool wrapSupported = true;
#endif
// An image can be rendered as a single quad if:
// - There are no margins, and either:
// - the image isn't repeated
// - the source rectangle fills the entire texture so that texture wrapping can be used,
// and NPOT is supported
if (!hasMargins && (!hasTiles || (fullTexture && wrapSupported))) {
QRectF sr;
if (!fullTexture) {
sr = QRectF(innerSourceRect.x() + (m_subSourceRect.left() - floorLeft) * innerSourceRect.width(),
innerSourceRect.y() + (m_subSourceRect.top() - floorTop) * innerSourceRect.height(),
m_subSourceRect.width() * innerSourceRect.width(),
m_subSourceRect.height() * innerSourceRect.height());
} else {
sr = QRectF(m_subSourceRect.left() - floorLeft, m_subSourceRect.top() - floorTop,
m_subSourceRect.width(), m_subSourceRect.height());
}
if (m_mirror) {
qreal oldLeft = sr.left();
sr.setLeft(sr.right());
sr.setRight(oldLeft);
}
if (m_antialiasing) {
QSGGeometry *g = geometry();
Q_ASSERT(g != &m_geometry);
g->allocate(8, 14);
g->setDrawingMode(GL_TRIANGLE_STRIP);
SmoothVertex *vertices = reinterpret_cast<SmoothVertex *>(g->vertexData());
float delta = float(qAbs(m_targetRect.width()) < qAbs(m_targetRect.height())
? m_targetRect.width() : m_targetRect.height()) * 0.5f;
float sx = float(sr.width() / m_targetRect.width());
float sy = float(sr.height() / m_targetRect.height());
for (int d = -1; d <= 1; d += 2) {
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 2; ++i, ++vertices) {
vertices->x = m_targetRect.x() + i * m_targetRect.width();
vertices->y = m_targetRect.y() + j * m_targetRect.height();
vertices->u = sr.x() + i * sr.width();
vertices->v = sr.y() + j * sr.height();
vertices->dx = (i == 0 ? delta : -delta) * d;
vertices->dy = (j == 0 ? delta : -delta) * d;
vertices->du = (d < 0 ? 0 : vertices->dx * sx);
vertices->dv = (d < 0 ? 0 : vertices->dy * sy);
}
}
}
Q_ASSERT(vertices - g->vertexCount() == g->vertexData());
static const quint16 indices[] = {
0, 4, 1, 5, 3, 7, 2, 6, 0, 4,
4, 6, 5, 7
};
Q_ASSERT(g->sizeOfIndex() * g->indexCount() == sizeof(indices));
memcpy(g->indexDataAsUShort(), indices, sizeof(indices));
} else {
m_geometry.allocate(4);
m_geometry.setDrawingMode(GL_TRIANGLE_STRIP);
QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_targetRect, sr);
}
} else {
int hCells = hTiles;
int vCells = vTiles;
if (m_innerTargetRect.width() == 0)
hCells = 0;
if (m_innerTargetRect.left() != m_targetRect.left())
++hCells;
if (m_innerTargetRect.right() != m_targetRect.right())
++hCells;
if (m_innerTargetRect.height() == 0)
vCells = 0;
if (m_innerTargetRect.top() != m_targetRect.top())
++vCells;
if (m_innerTargetRect.bottom() != m_targetRect.bottom())
++vCells;
QVarLengthArray<X, 32> xData(2 * hCells);
QVarLengthArray<Y, 32> yData(2 * vCells);
X *xs = xData.data();
Y *ys = yData.data();
if (m_innerTargetRect.left() != m_targetRect.left()) {
xs[0].x = m_targetRect.left();
xs[0].tx = sourceRect.left();
xs[1].x = m_innerTargetRect.left();
xs[1].tx = innerSourceRect.left();
xs += 2;
}
if (m_innerTargetRect.width() != 0) {
xs[0].x = m_innerTargetRect.left();
xs[0].tx = innerSourceRect.x() + (m_subSourceRect.left() - floorLeft) * innerSourceRect.width();
++xs;
float b = m_innerTargetRect.width() / m_subSourceRect.width();
float a = m_innerTargetRect.x() - m_subSourceRect.x() * b;
for (int i = floorLeft + 1; i <= ceilRight - 1; ++i) {
xs[0].x = xs[1].x = a + b * i;
xs[0].tx = innerSourceRect.right();
xs[1].tx = innerSourceRect.left();
xs += 2;
}
xs[0].x = m_innerTargetRect.right();
xs[0].tx = innerSourceRect.x() + (m_subSourceRect.right() - ceilRight + 1) * innerSourceRect.width();
++xs;
}
if (m_innerTargetRect.right() != m_targetRect.right()) {
xs[0].x = m_innerTargetRect.right();
xs[0].tx = innerSourceRect.right();
xs[1].x = m_targetRect.right();
xs[1].tx = sourceRect.right();
xs += 2;
}
Q_ASSERT(xs == xData.data() + xData.size());
if (m_mirror) {
float leftPlusRight = m_targetRect.left() + m_targetRect.right();
int count = xData.size();
xs = xData.data();
for (int i = 0; i < count >> 1; ++i)
qSwap(xs[i], xs[count - 1 - i]);
for (int i = 0; i < count; ++i)
xs[i].x = leftPlusRight - xs[i].x;
}
if (m_innerTargetRect.top() != m_targetRect.top()) {
ys[0].y = m_targetRect.top();
ys[0].ty = sourceRect.top();
ys[1].y = m_innerTargetRect.top();
ys[1].ty = innerSourceRect.top();
ys += 2;
}
if (m_innerTargetRect.height() != 0) {
ys[0].y = m_innerTargetRect.top();
ys[0].ty = innerSourceRect.y() + (m_subSourceRect.top() - floorTop) * innerSourceRect.height();
++ys;
float b = m_innerTargetRect.height() / m_subSourceRect.height();
float a = m_innerTargetRect.y() - m_subSourceRect.y() * b;
for (int i = floorTop + 1; i <= ceilBottom - 1; ++i) {
ys[0].y = ys[1].y = a + b * i;
ys[0].ty = innerSourceRect.bottom();
ys[1].ty = innerSourceRect.top();
ys += 2;
}
ys[0].y = m_innerTargetRect.bottom();
ys[0].ty = innerSourceRect.y() + (m_subSourceRect.bottom() - ceilBottom + 1) * innerSourceRect.height();
++ys;
}
if (m_innerTargetRect.bottom() != m_targetRect.bottom()) {
ys[0].y = m_innerTargetRect.bottom();
ys[0].ty = innerSourceRect.bottom();
ys[1].y = m_targetRect.bottom();
ys[1].ty = sourceRect.bottom();
ys += 2;
}
Q_ASSERT(ys == yData.data() + yData.size());
if (m_antialiasing) {
QSGGeometry *g = geometry();
Q_ASSERT(g != &m_geometry);
g->allocate(hCells * vCells * 4 + (hCells + vCells - 1) * 4,
hCells * vCells * 6 + (hCells + vCells) * 12);
g->setDrawingMode(GL_TRIANGLES);
SmoothVertex *vertices = reinterpret_cast<SmoothVertex *>(g->vertexData());
memset(vertices, 0, g->vertexCount() * g->sizeOfVertex());
quint16 *indices = g->indexDataAsUShort();
// The deltas are how much the fuzziness can reach into the image.
// Only the border vertices are moved by the vertex shader, so the fuzziness
// can't reach further into the image than the closest interior vertices.
float leftDx = xData.at(1).x - xData.at(0).x;
float rightDx = xData.at(xData.size() - 1).x - xData.at(xData.size() - 2).x;
float topDy = yData.at(1).y - yData.at(0).y;
float bottomDy = yData.at(yData.size() - 1).y - yData.at(yData.size() - 2).y;
float leftDu = xData.at(1).tx - xData.at(0).tx;
float rightDu = xData.at(xData.size() - 1).tx - xData.at(xData.size() - 2).tx;
float topDv = yData.at(1).ty - yData.at(0).ty;
float bottomDv = yData.at(yData.size() - 1).ty - yData.at(yData.size() - 2).ty;
if (hCells == 1) {
leftDx = rightDx *= 0.5f;
leftDu = rightDu *= 0.5f;
}
if (vCells == 1) {
topDy = bottomDy *= 0.5f;
topDv = bottomDv *= 0.5f;
}
// This delta is how much the fuzziness can reach out from the image.
float delta = float(qAbs(m_targetRect.width()) < qAbs(m_targetRect.height())
? m_targetRect.width() : m_targetRect.height()) * 0.5f;
quint16 index = 0;
ys = yData.data();
for (int j = 0; j < vCells; ++j, ys += 2) {
xs = xData.data();
bool isTop = j == 0;
bool isBottom = j == vCells - 1;
for (int i = 0; i < hCells; ++i, xs += 2) {
bool isLeft = i == 0;
bool isRight = i == hCells - 1;
SmoothVertex *v = vertices + index;
quint16 topLeft = index;
for (int k = (isTop || isLeft ? 2 : 1); k--; ++v, ++index) {
v->x = xs[0].x;
v->u = xs[0].tx;
v->y = ys[0].y;
v->v = ys[0].ty;
}
quint16 topRight = index;
for (int k = (isTop || isRight ? 2 : 1); k--; ++v, ++index) {
v->x = xs[1].x;
v->u = xs[1].tx;
v->y = ys[0].y;
v->v = ys[0].ty;
}
quint16 bottomLeft = index;
for (int k = (isBottom || isLeft ? 2 : 1); k--; ++v, ++index) {
v->x = xs[0].x;
v->u = xs[0].tx;
v->y = ys[1].y;
v->v = ys[1].ty;
}
quint16 bottomRight = index;
for (int k = (isBottom || isRight ? 2 : 1); k--; ++v, ++index) {
v->x = xs[1].x;
v->u = xs[1].tx;
v->y = ys[1].y;
v->v = ys[1].ty;
}
appendQuad(&indices, topLeft, topRight, bottomLeft, bottomRight);
if (isTop) {
vertices[topLeft].dy = vertices[topRight].dy = topDy;
vertices[topLeft].dv = vertices[topRight].dv = topDv;
vertices[topLeft + 1].dy = vertices[topRight + 1].dy = -delta;
appendQuad(&indices, topLeft + 1, topRight + 1, topLeft, topRight);
}
if (isBottom) {
vertices[bottomLeft].dy = vertices[bottomRight].dy = -bottomDy;
vertices[bottomLeft].dv = vertices[bottomRight].dv = -bottomDv;
vertices[bottomLeft + 1].dy = vertices[bottomRight + 1].dy = delta;
appendQuad(&indices, bottomLeft, bottomRight, bottomLeft + 1, bottomRight + 1);
}
if (isLeft) {
vertices[topLeft].dx = vertices[bottomLeft].dx = leftDx;
vertices[topLeft].du = vertices[bottomLeft].du = leftDu;
vertices[topLeft + 1].dx = vertices[bottomLeft + 1].dx = -delta;
appendQuad(&indices, topLeft + 1, topLeft, bottomLeft + 1, bottomLeft);
}
if (isRight) {
vertices[topRight].dx = vertices[bottomRight].dx = -rightDx;
vertices[topRight].du = vertices[bottomRight].du = -rightDu;
vertices[topRight + 1].dx = vertices[bottomRight + 1].dx = delta;
appendQuad(&indices, topRight, topRight + 1, bottomRight, bottomRight + 1);
}
}
}
Q_ASSERT(index == g->vertexCount());
Q_ASSERT(indices - g->indexCount() == g->indexData());
} else {
m_geometry.allocate(hCells * vCells * 4, hCells * vCells * 6);
m_geometry.setDrawingMode(GL_TRIANGLES);
QSGGeometry::TexturedPoint2D *vertices = m_geometry.vertexDataAsTexturedPoint2D();
ys = yData.data();
for (int j = 0; j < vCells; ++j, ys += 2) {
xs = xData.data();
for (int i = 0; i < hCells; ++i, xs += 2) {
vertices[0].x = vertices[2].x = xs[0].x;
vertices[0].tx = vertices[2].tx = xs[0].tx;
vertices[1].x = vertices[3].x = xs[1].x;
vertices[1].tx = vertices[3].tx = xs[1].tx;
vertices[0].y = vertices[1].y = ys[0].y;
vertices[0].ty = vertices[1].ty = ys[0].ty;
vertices[2].y = vertices[3].y = ys[1].y;
vertices[2].ty = vertices[3].ty = ys[1].ty;
vertices += 4;
}
}
quint16 *indices = m_geometry.indexDataAsUShort();
for (int i = 0; i < 4 * vCells * hCells; i += 4)
appendQuad(&indices, i, i + 1, i + 2, i + 3);
}
}
}
markDirty(DirtyGeometry);
m_dirtyGeometry = false;
}
void QSGBasicInternalImageNode::updateGeometry()
{
Q_ASSERT(!m_targetRect.isEmpty());
const QSGTexture *t = materialTexture();
if (!t) {
QSGGeometry *g = geometry();
g->allocate(4);
g->setDrawingMode(QSGGeometry::DrawTriangleStrip);
memset(g->vertexData(), 0, g->sizeOfVertex() * 4);
} else {
QRectF sourceRect = t->normalizedTextureSubRect();
QRectF innerSourceRect(sourceRect.x() + m_innerSourceRect.x() * sourceRect.width(),
sourceRect.y() + m_innerSourceRect.y() * sourceRect.height(),
m_innerSourceRect.width() * sourceRect.width(),
m_innerSourceRect.height() * sourceRect.height());
bool hasMargins = m_targetRect != m_innerTargetRect;
int floorLeft = qFloor(m_subSourceRect.left());
int ceilRight = qCeil(m_subSourceRect.right());
int floorTop = qFloor(m_subSourceRect.top());
int ceilBottom = qCeil(m_subSourceRect.bottom());
int hTiles = ceilRight - floorLeft;
int vTiles = ceilBottom - floorTop;
bool hasTiles = hTiles != 1 || vTiles != 1;
bool fullTexture = innerSourceRect == QRectF(0, 0, 1, 1);
// An image can be rendered as a single quad if:
// - There are no margins, and either:
// - the image isn't repeated
// - the source rectangle fills the entire texture so that texture wrapping can be used,
// and NPOT is supported
if (!hasMargins && (!hasTiles || (fullTexture && supportsWrap(t->textureSize())))) {
QRectF sr;
if (!fullTexture) {
sr = QRectF(innerSourceRect.x() + (m_subSourceRect.left() - floorLeft) * innerSourceRect.width(),
innerSourceRect.y() + (m_subSourceRect.top() - floorTop) * innerSourceRect.height(),
m_subSourceRect.width() * innerSourceRect.width(),
m_subSourceRect.height() * innerSourceRect.height());
} else {
sr = QRectF(m_subSourceRect.left() - floorLeft, m_subSourceRect.top() - floorTop,
m_subSourceRect.width(), m_subSourceRect.height());
}
if (m_mirror) {
qreal oldLeft = sr.left();
sr.setLeft(sr.right());
sr.setRight(oldLeft);
}
if (m_antialiasing) {
QSGGeometry *g = geometry();
Q_ASSERT(g != &m_geometry);
g->allocate(8, 14);
g->setDrawingMode(QSGGeometry::DrawTriangleStrip);
SmoothVertex *vertices = reinterpret_cast<SmoothVertex *>(g->vertexData());
float delta = float(qAbs(m_targetRect.width()) < qAbs(m_targetRect.height())
? m_targetRect.width() : m_targetRect.height()) * 0.5f;
float sx = float(sr.width() / m_targetRect.width());
float sy = float(sr.height() / m_targetRect.height());
for (int d = -1; d <= 1; d += 2) {
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 2; ++i, ++vertices) {
vertices->x = m_targetRect.x() + i * m_targetRect.width();
vertices->y = m_targetRect.y() + j * m_targetRect.height();
vertices->u = sr.x() + i * sr.width();
vertices->v = sr.y() + j * sr.height();
vertices->dx = (i == 0 ? delta : -delta) * d;
vertices->dy = (j == 0 ? delta : -delta) * d;
vertices->du = (d < 0 ? 0 : vertices->dx * sx);
vertices->dv = (d < 0 ? 0 : vertices->dy * sy);
}
}
}
Q_ASSERT(vertices - g->vertexCount() == g->vertexData());
static const quint16 indices[] = {
0, 4, 1, 5, 3, 7, 2, 6, 0, 4,
4, 6, 5, 7
};
Q_ASSERT(g->sizeOfIndex() * g->indexCount() == sizeof(indices));
memcpy(g->indexDataAsUShort(), indices, sizeof(indices));
} else {
m_geometry.allocate(4);
m_geometry.setDrawingMode(QSGGeometry::DrawTriangleStrip);
QSGGeometry::updateTexturedRectGeometry(&m_geometry, m_targetRect, sr);
}
} else {
QSGGeometry *g = m_antialiasing ? geometry() : &m_geometry;
updateGeometry(m_targetRect, m_innerTargetRect,
sourceRect, innerSourceRect, m_subSourceRect,
g, m_mirror, m_antialiasing);
}
}
markDirty(DirtyGeometry);
m_dirtyGeometry = false;
}
