diff options
Diffstat (limited to 'src/quickshapes/qquickshapenvprrenderer.cpp')
| -rw-r--r-- | src/quickshapes/qquickshapenvprrenderer.cpp | 1001 |
1 files changed, 0 insertions, 1001 deletions
diff --git a/src/quickshapes/qquickshapenvprrenderer.cpp b/src/quickshapes/qquickshapenvprrenderer.cpp deleted file mode 100644 index 51af0d8961..0000000000 --- a/src/quickshapes/qquickshapenvprrenderer.cpp +++ /dev/null @@ -1,1001 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQuick module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qquickshapenvprrenderer_p.h" -#include <QOpenGLExtraFunctions> -#include <QOpenGLFramebufferObject> -#include <QOpenGLShaderProgram> -#include <QOpenGLBuffer> -#include <qmath.h> -#include <private/qpainterpath_p.h> -#include <private/qquickpath_p_p.h> - -QT_BEGIN_NAMESPACE - -void QQuickShapeNvprRenderer::beginSync(int totalCount) -{ - if (m_sp.count() != totalCount) { - m_sp.resize(totalCount); - m_accDirty |= DirtyList; - } -} - -void QQuickShapeNvprRenderer::setPath(int index, const QQuickPath *path) -{ - ShapePathGuiData &d(m_sp[index]); - convertPath(path, &d); - d.dirty |= DirtyPath; - m_accDirty |= DirtyPath; -} - -void QQuickShapeNvprRenderer::setStrokeColor(int index, const QColor &color) -{ - ShapePathGuiData &d(m_sp[index]); - d.strokeColor = color; - d.dirty |= DirtyStyle; - m_accDirty |= DirtyStyle; -} - -void QQuickShapeNvprRenderer::setStrokeWidth(int index, qreal w) -{ - ShapePathGuiData &d(m_sp[index]); - d.strokeWidth = w; - d.dirty |= DirtyStyle; - m_accDirty |= DirtyStyle; -} - -void QQuickShapeNvprRenderer::setFillColor(int index, const QColor &color) -{ - ShapePathGuiData &d(m_sp[index]); - d.fillColor = color; - d.dirty |= DirtyStyle; - m_accDirty |= DirtyStyle; -} - -void QQuickShapeNvprRenderer::setFillRule(int index, QQuickShapePath::FillRule fillRule) -{ - ShapePathGuiData &d(m_sp[index]); - d.fillRule = fillRule; - d.dirty |= DirtyFillRule; - m_accDirty |= DirtyFillRule; -} - -void QQuickShapeNvprRenderer::setJoinStyle(int index, QQuickShapePath::JoinStyle joinStyle, int miterLimit) -{ - ShapePathGuiData &d(m_sp[index]); - d.joinStyle = joinStyle; - d.miterLimit = miterLimit; - d.dirty |= DirtyStyle; - m_accDirty |= DirtyStyle; -} - -void QQuickShapeNvprRenderer::setCapStyle(int index, QQuickShapePath::CapStyle capStyle) -{ - ShapePathGuiData &d(m_sp[index]); - d.capStyle = capStyle; - d.dirty |= DirtyStyle; - m_accDirty |= DirtyStyle; -} - -void QQuickShapeNvprRenderer::setStrokeStyle(int index, QQuickShapePath::StrokeStyle strokeStyle, - qreal dashOffset, const QVector<qreal> &dashPattern) -{ - ShapePathGuiData &d(m_sp[index]); - d.dashActive = strokeStyle == QQuickShapePath::DashLine; - d.dashOffset = dashOffset; - d.dashPattern = dashPattern; - d.dirty |= DirtyDash; - m_accDirty |= DirtyDash; -} - -void QQuickShapeNvprRenderer::setFillGradient(int index, QQuickShapeGradient *gradient) -{ - ShapePathGuiData &d(m_sp[index]); - if (gradient) { - d.fillGradient.stops = gradient->gradientStops(); // sorted - d.fillGradient.spread = gradient->spread(); - if (QQuickShapeLinearGradient *g = qobject_cast<QQuickShapeLinearGradient *>(gradient)) { - d.fillGradientActive = LinearGradient; - d.fillGradient.a = QPointF(g->x1(), g->y1()); - d.fillGradient.b = QPointF(g->x2(), g->y2()); - } else if (QQuickShapeRadialGradient *g = qobject_cast<QQuickShapeRadialGradient *>(gradient)) { - d.fillGradientActive = RadialGradient; - d.fillGradient.a = QPointF(g->centerX(), g->centerY()); - d.fillGradient.b = QPointF(g->focalX(), g->focalY()); - d.fillGradient.v0 = g->centerRadius(); - d.fillGradient.v1 = g->focalRadius(); - } else if (QQuickShapeConicalGradient *g = qobject_cast<QQuickShapeConicalGradient *>(gradient)) { - d.fillGradientActive = ConicalGradient; - d.fillGradient.a = QPointF(g->centerX(), g->centerY()); - d.fillGradient.v0 = g->angle(); - } else { - Q_UNREACHABLE(); - } - } else { - d.fillGradientActive = NoGradient; - } - d.dirty |= DirtyFillGradient; - m_accDirty |= DirtyFillGradient; -} - -void QQuickShapeNvprRenderer::endSync(bool) -{ -} - -void QQuickShapeNvprRenderer::setNode(QQuickShapeNvprRenderNode *node) -{ - if (m_node != node) { - m_node = node; - m_accDirty |= DirtyList; - } -} - -QDebug operator<<(QDebug debug, const QQuickShapeNvprRenderer::NvprPath &path) -{ - QDebugStateSaver saver(debug); - debug.space().noquote(); - if (!path.str.isEmpty()) { - debug << "Path with SVG string" << path.str; - return debug; - } - debug << "Path with" << path.cmd.count() << "commands"; - int ci = 0; - for (GLubyte cmd : path.cmd) { - static struct { GLubyte cmd; const char *s; int coordCount; } nameTab[] = { - { GL_MOVE_TO_NV, "moveTo", 2 }, - { GL_LINE_TO_NV, "lineTo", 2 }, - { GL_QUADRATIC_CURVE_TO_NV, "quadTo", 4 }, - { GL_CUBIC_CURVE_TO_NV, "cubicTo", 6 }, - { GL_LARGE_CW_ARC_TO_NV, "arcTo-large-CW", 5 }, - { GL_LARGE_CCW_ARC_TO_NV, "arcTo-large-CCW", 5 }, - { GL_SMALL_CW_ARC_TO_NV, "arcTo-small-CW", 5 }, - { GL_SMALL_CCW_ARC_TO_NV, "arcTo-small-CCW", 5 }, - { GL_CLOSE_PATH_NV, "closePath", 0 } }; - for (size_t i = 0; i < sizeof(nameTab) / sizeof(nameTab[0]); ++i) { - if (nameTab[i].cmd == cmd) { - QByteArray cs; - for (int j = 0; j < nameTab[i].coordCount; ++j) { - cs.append(QByteArray::number(path.coord[ci++])); - cs.append(' '); - } - debug << "\n " << nameTab[i].s << " " << cs; - break; - } - } - } - return debug; -} - -static inline void appendCoords(QVector<GLfloat> *v, QQuickCurve *c, QPointF *pos) -{ - QPointF p(c->hasRelativeX() ? pos->x() + c->relativeX() : c->x(), - c->hasRelativeY() ? pos->y() + c->relativeY() : c->y()); - v->append(p.x()); - v->append(p.y()); - *pos = p; -} - -static inline void appendControlCoords(QVector<GLfloat> *v, QQuickPathQuad *c, const QPointF &pos) -{ - QPointF p(c->hasRelativeControlX() ? pos.x() + c->relativeControlX() : c->controlX(), - c->hasRelativeControlY() ? pos.y() + c->relativeControlY() : c->controlY()); - v->append(p.x()); - v->append(p.y()); -} - -static inline void appendControl1Coords(QVector<GLfloat> *v, QQuickPathCubic *c, const QPointF &pos) -{ - QPointF p(c->hasRelativeControl1X() ? pos.x() + c->relativeControl1X() : c->control1X(), - c->hasRelativeControl1Y() ? pos.y() + c->relativeControl1Y() : c->control1Y()); - v->append(p.x()); - v->append(p.y()); -} - -static inline void appendControl2Coords(QVector<GLfloat> *v, QQuickPathCubic *c, const QPointF &pos) -{ - QPointF p(c->hasRelativeControl2X() ? pos.x() + c->relativeControl2X() : c->control2X(), - c->hasRelativeControl2Y() ? pos.y() + c->relativeControl2Y() : c->control2Y()); - v->append(p.x()); - v->append(p.y()); -} - -void QQuickShapeNvprRenderer::convertPath(const QQuickPath *path, ShapePathGuiData *d) -{ - d->path = NvprPath(); - if (!path) - return; - - const QList<QQuickPathElement *> &pp(QQuickPathPrivate::get(path)->_pathElements); - if (pp.isEmpty()) - return; - - QPointF startPos(path->startX(), path->startY()); - QPointF pos(startPos); - if (!qFuzzyIsNull(pos.x()) || !qFuzzyIsNull(pos.y())) { - d->path.cmd.append(GL_MOVE_TO_NV); - d->path.coord.append(pos.x()); - d->path.coord.append(pos.y()); - } - - for (QQuickPathElement *e : pp) { - if (QQuickPathMove *o = qobject_cast<QQuickPathMove *>(e)) { - d->path.cmd.append(GL_MOVE_TO_NV); - appendCoords(&d->path.coord, o, &pos); - startPos = pos; - } else if (QQuickPathLine *o = qobject_cast<QQuickPathLine *>(e)) { - d->path.cmd.append(GL_LINE_TO_NV); - appendCoords(&d->path.coord, o, &pos); - } else if (QQuickPathQuad *o = qobject_cast<QQuickPathQuad *>(e)) { - d->path.cmd.append(GL_QUADRATIC_CURVE_TO_NV); - appendControlCoords(&d->path.coord, o, pos); - appendCoords(&d->path.coord, o, &pos); - } else if (QQuickPathCubic *o = qobject_cast<QQuickPathCubic *>(e)) { - d->path.cmd.append(GL_CUBIC_CURVE_TO_NV); - appendControl1Coords(&d->path.coord, o, pos); - appendControl2Coords(&d->path.coord, o, pos); - appendCoords(&d->path.coord, o, &pos); - } else if (QQuickPathArc *o = qobject_cast<QQuickPathArc *>(e)) { - const bool sweepFlag = o->direction() == QQuickPathArc::Clockwise; // maps to CCW, not a typo - GLenum cmd; - if (o->useLargeArc()) - cmd = sweepFlag ? GL_LARGE_CCW_ARC_TO_NV : GL_LARGE_CW_ARC_TO_NV; - else - cmd = sweepFlag ? GL_SMALL_CCW_ARC_TO_NV : GL_SMALL_CW_ARC_TO_NV; - d->path.cmd.append(cmd); - d->path.coord.append(o->radiusX()); - d->path.coord.append(o->radiusY()); - d->path.coord.append(o->xAxisRotation()); - appendCoords(&d->path.coord, o, &pos); - } else if (QQuickPathSvg *o = qobject_cast<QQuickPathSvg *>(e)) { - // PathSvg cannot be combined with other elements. But take at - // least startX and startY into account. - if (d->path.str.isEmpty()) - d->path.str = QString(QStringLiteral("M %1 %2 ")).arg(pos.x()).arg(pos.y()).toUtf8(); - d->path.str.append(o->path().toUtf8()); - } else if (QQuickPathAngleArc *o = qobject_cast<QQuickPathAngleArc *>(e)) { - QRectF rect(o->centerX() - o->radiusX(), o->centerY() - o->radiusY(), o->radiusX() * 2, o->radiusY() * 2); - QPointF startPoint; - QPointF endPoint; - qt_find_ellipse_coords(rect, o->startAngle(), -o->sweepAngle(), &startPoint, &endPoint); - - // get to our starting position - if (o->moveToStart()) - d->path.cmd.append(GL_MOVE_TO_NV); - else - d->path.cmd.append(GL_LINE_TO_NV); // ### should we check if startPoint == pos? - d->path.coord.append(startPoint.x()); - d->path.coord.append(startPoint.y()); - - const bool sweepFlag = o->sweepAngle() > 0; // maps to CCW, not a typo - d->path.cmd.append(qAbs(o->sweepAngle()) > 180.0 - ? (sweepFlag ? GL_LARGE_CCW_ARC_TO_NV : GL_LARGE_CW_ARC_TO_NV) - : (sweepFlag ? GL_SMALL_CCW_ARC_TO_NV : GL_SMALL_CW_ARC_TO_NV)); - d->path.coord.append(o->radiusX()); - d->path.coord.append(o->radiusY()); - d->path.coord.append(0); // xAxisRotation - d->path.coord.append(endPoint.x()); - d->path.coord.append(endPoint.y()); - pos = endPoint; - } else { - qWarning() << "Shape/NVPR: unsupported Path element" << e; - } - } - - // For compatibility with QTriangulatingStroker. SVG and others would not - // implicitly close the path when end_pos == start_pos (start_pos being the - // last moveTo pos); that would still need an explicit 'z' or similar. We - // don't have an explicit close command, so just fake a close when the - // positions match. - if (pos == startPos) - d->path.cmd.append(GL_CLOSE_PATH_NV); -} - -static inline QVector4D qsg_premultiply(const QColor &c, float globalOpacity) -{ - const float o = c.alphaF() * globalOpacity; - return QVector4D(c.redF() * o, c.greenF() * o, c.blueF() * o, o); -} - -void QQuickShapeNvprRenderer::updateNode() -{ - // Called on the render thread with gui blocked -> update the node with its - // own copy of all relevant data. - - if (!m_accDirty) - return; - - const int count = m_sp.count(); - const bool listChanged = m_accDirty & DirtyList; - if (listChanged) - m_node->m_sp.resize(count); - - for (int i = 0; i < count; ++i) { - ShapePathGuiData &src(m_sp[i]); - QQuickShapeNvprRenderNode::ShapePathRenderData &dst(m_node->m_sp[i]); - - int dirty = src.dirty; - src.dirty = 0; - if (listChanged) - dirty |= DirtyPath | DirtyStyle | DirtyFillRule | DirtyDash | DirtyFillGradient; - - // updateNode() can be called several times with different dirty - // states before render() gets invoked. So accumulate. - dst.dirty |= dirty; - - if (dirty & DirtyPath) - dst.source = src.path; - - if (dirty & DirtyStyle) { - dst.strokeWidth = src.strokeWidth; - dst.strokeColor = qsg_premultiply(src.strokeColor, 1.0f); - dst.fillColor = qsg_premultiply(src.fillColor, 1.0f); - switch (src.joinStyle) { - case QQuickShapePath::MiterJoin: - dst.joinStyle = GL_MITER_TRUNCATE_NV; - break; - case QQuickShapePath::BevelJoin: - dst.joinStyle = GL_BEVEL_NV; - break; - case QQuickShapePath::RoundJoin: - dst.joinStyle = GL_ROUND_NV; - break; - default: - Q_UNREACHABLE(); - } - dst.miterLimit = src.miterLimit; - switch (src.capStyle) { - case QQuickShapePath::FlatCap: - dst.capStyle = GL_FLAT; - break; - case QQuickShapePath::SquareCap: - dst.capStyle = GL_SQUARE_NV; - break; - case QQuickShapePath::RoundCap: - dst.capStyle = GL_ROUND_NV; - break; - default: - Q_UNREACHABLE(); - } - } - - if (dirty & DirtyFillRule) { - switch (src.fillRule) { - case QQuickShapePath::OddEvenFill: - dst.fillRule = GL_INVERT; - break; - case QQuickShapePath::WindingFill: - dst.fillRule = GL_COUNT_UP_NV; - break; - default: - Q_UNREACHABLE(); - } - } - - if (dirty & DirtyDash) { - // Multiply by strokeWidth because the Shape API follows QPen - // meaning the input dash pattern and dash offset here are in width units. - dst.dashOffset = src.dashOffset * src.strokeWidth; - if (src.dashActive) { - if (src.dashPattern.isEmpty()) { - // default values for DashLine as defined in qpen.cpp - dst.dashPattern.resize(2); - dst.dashPattern[0] = 4 * src.strokeWidth; // dash - dst.dashPattern[1] = 2 * src.strokeWidth; // space - } else { - dst.dashPattern.resize(src.dashPattern.count()); - for (int i = 0; i < src.dashPattern.count(); ++i) - dst.dashPattern[i] = GLfloat(src.dashPattern[i]) * src.strokeWidth; - - // QPen expects a dash pattern of even length and so should we - if (src.dashPattern.count() % 2 != 0) { - qWarning("QQuickShapeNvprRenderNode: dash pattern not of even length"); - dst.dashPattern << src.strokeWidth; - } - } - } else { - dst.dashPattern.clear(); - } - } - - if (dirty & DirtyFillGradient) { - dst.fillGradientActive = src.fillGradientActive; - if (src.fillGradientActive) - dst.fillGradient = src.fillGradient; - } - } - - m_node->markDirty(QSGNode::DirtyMaterial); - m_accDirty = 0; -} - -bool QQuickShapeNvprRenderNode::nvprInited = false; -QQuickNvprFunctions QQuickShapeNvprRenderNode::nvpr; -QQuickNvprMaterialManager QQuickShapeNvprRenderNode::mtlmgr; - -QQuickShapeNvprRenderNode::~QQuickShapeNvprRenderNode() -{ - releaseResources(); -} - -void QQuickShapeNvprRenderNode::releaseResources() -{ - for (ShapePathRenderData &d : m_sp) { - if (d.path) { - nvpr.deletePaths(d.path, 1); - d.path = 0; - } - if (d.fallbackFbo) { - delete d.fallbackFbo; - d.fallbackFbo = nullptr; - } - } - - m_fallbackBlitter.destroy(); -} - -void QQuickNvprMaterialManager::create(QQuickNvprFunctions *nvpr) -{ - m_nvpr = nvpr; -} - -void QQuickNvprMaterialManager::releaseResources() -{ - QOpenGLExtraFunctions *f = QOpenGLContext::currentContext()->extraFunctions(); - for (MaterialDesc &mtl : m_materials) { - if (mtl.ppl) { - f->glDeleteProgramPipelines(1, &mtl.ppl); - mtl = MaterialDesc(); - } - } -} - -QQuickNvprMaterialManager::MaterialDesc *QQuickNvprMaterialManager::activateMaterial(Material m) -{ - QOpenGLExtraFunctions *f = QOpenGLContext::currentContext()->extraFunctions(); - MaterialDesc &mtl(m_materials[m]); - - if (!mtl.ppl) { - if (m == MatSolid) { - static const char *fragSrc = - "#version 310 es\n" - "precision highp float;\n" - "out vec4 fragColor;\n" - "uniform vec4 color;\n" - "uniform float opacity;\n" - "void main() {\n" - " fragColor = color * opacity;\n" - "}\n"; - if (!m_nvpr->createFragmentOnlyPipeline(fragSrc, &mtl.ppl, &mtl.prg)) { - qWarning("NVPR: Failed to create shader pipeline for solid fill"); - return nullptr; - } - Q_ASSERT(mtl.ppl && mtl.prg); - mtl.uniLoc[0] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "color"); - Q_ASSERT(mtl.uniLoc[0] >= 0); - mtl.uniLoc[1] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "opacity"); - Q_ASSERT(mtl.uniLoc[1] >= 0); - } else if (m == MatLinearGradient) { - static const char *fragSrc = - "#version 310 es\n" - "precision highp float;\n" - "layout(location = 0) in vec2 uv;" - "uniform float opacity;\n" - "uniform sampler2D gradTab;\n" - "uniform vec2 gradStart;\n" - "uniform vec2 gradEnd;\n" - "out vec4 fragColor;\n" - "void main() {\n" - " vec2 gradVec = gradEnd - gradStart;\n" - " float gradTabIndex = dot(gradVec, uv - gradStart) / (gradVec.x * gradVec.x + gradVec.y * gradVec.y);\n" - " fragColor = texture(gradTab, vec2(gradTabIndex, 0.5)) * opacity;\n" - "}\n"; - if (!m_nvpr->createFragmentOnlyPipeline(fragSrc, &mtl.ppl, &mtl.prg)) { - qWarning("NVPR: Failed to create shader pipeline for linear gradient"); - return nullptr; - } - Q_ASSERT(mtl.ppl && mtl.prg); - mtl.uniLoc[1] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "opacity"); - Q_ASSERT(mtl.uniLoc[1] >= 0); - mtl.uniLoc[2] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "gradStart"); - Q_ASSERT(mtl.uniLoc[2] >= 0); - mtl.uniLoc[3] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "gradEnd"); - Q_ASSERT(mtl.uniLoc[3] >= 0); - } else if (m == MatRadialGradient) { - static const char *fragSrc = - "#version 310 es\n" - "precision highp float;\n" - "uniform sampler2D gradTab;\n" - "uniform float opacity;\n" - "uniform vec2 focalToCenter;\n" - "uniform float centerRadius;\n" - "uniform float focalRadius;\n" - "uniform vec2 translationPoint;\n" - "layout(location = 0) in vec2 uv;\n" - "out vec4 fragColor;\n" - "void main() {\n" - " vec2 coord = uv - translationPoint;\n" - " float rd = centerRadius - focalRadius;\n" - " float b = 2.0 * (rd * focalRadius + dot(coord, focalToCenter));\n" - " float fmp2_m_radius2 = -focalToCenter.x * focalToCenter.x - focalToCenter.y * focalToCenter.y + rd * rd;\n" - " float inverse_2_fmp2_m_radius2 = 1.0 / (2.0 * fmp2_m_radius2);\n" - " float det = b * b - 4.0 * fmp2_m_radius2 * ((focalRadius * focalRadius) - dot(coord, coord));\n" - " vec4 result = vec4(0.0);\n" - " if (det >= 0.0) {\n" - " float detSqrt = sqrt(det);\n" - " float w = max((-b - detSqrt) * inverse_2_fmp2_m_radius2, (-b + detSqrt) * inverse_2_fmp2_m_radius2);\n" - " if (focalRadius + w * (centerRadius - focalRadius) >= 0.0)\n" - " result = texture(gradTab, vec2(w, 0.5)) * opacity;\n" - " }\n" - " fragColor = result;\n" - "}\n"; - if (!m_nvpr->createFragmentOnlyPipeline(fragSrc, &mtl.ppl, &mtl.prg)) { - qWarning("NVPR: Failed to create shader pipeline for radial gradient"); - return nullptr; - } - Q_ASSERT(mtl.ppl && mtl.prg); - mtl.uniLoc[1] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "opacity"); - Q_ASSERT(mtl.uniLoc[1] >= 0); - mtl.uniLoc[2] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "focalToCenter"); - Q_ASSERT(mtl.uniLoc[2] >= 0); - mtl.uniLoc[3] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "centerRadius"); - Q_ASSERT(mtl.uniLoc[3] >= 0); - mtl.uniLoc[4] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "focalRadius"); - Q_ASSERT(mtl.uniLoc[4] >= 0); - mtl.uniLoc[5] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "translationPoint"); - Q_ASSERT(mtl.uniLoc[5] >= 0); - } else if (m == MatConicalGradient) { - static const char *fragSrc = - "#version 310 es\n" - "precision highp float;\n" - "#define INVERSE_2PI 0.1591549430918953358\n" - "uniform sampler2D gradTab;\n" - "uniform float opacity;\n" - "uniform float angle;\n" - "uniform vec2 translationPoint;\n" - "layout(location = 0) in vec2 uv;\n" - "out vec4 fragColor;\n" - "void main() {\n" - " vec2 coord = uv - translationPoint;\n" - " float t;\n" - " if (abs(coord.y) == abs(coord.x))\n" - " t = (atan(-coord.y + 0.002, coord.x) + angle) * INVERSE_2PI;\n" - " else\n" - " t = (atan(-coord.y, coord.x) + angle) * INVERSE_2PI;\n" - " fragColor = texture(gradTab, vec2(t - floor(t), 0.5)) * opacity;\n" - "}\n"; - if (!m_nvpr->createFragmentOnlyPipeline(fragSrc, &mtl.ppl, &mtl.prg)) { - qWarning("NVPR: Failed to create shader pipeline for conical gradient"); - return nullptr; - } - Q_ASSERT(mtl.ppl && mtl.prg); - mtl.uniLoc[1] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "opacity"); - Q_ASSERT(mtl.uniLoc[1] >= 0); - mtl.uniLoc[2] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "angle"); - Q_ASSERT(mtl.uniLoc[2] >= 0); - mtl.uniLoc[3] = f->glGetProgramResourceLocation(mtl.prg, GL_UNIFORM, "translationPoint"); - Q_ASSERT(mtl.uniLoc[3] >= 0); - } else { - Q_UNREACHABLE(); - } - } - - f->glBindProgramPipeline(mtl.ppl); - - return &mtl; -} - -void QQuickShapeNvprRenderNode::updatePath(ShapePathRenderData *d) -{ - if (d->dirty & QQuickShapeNvprRenderer::DirtyPath) { - if (!d->path) { - d->path = nvpr.genPaths(1); - Q_ASSERT(d->path != 0); - } - if (d->source.str.isEmpty()) { - nvpr.pathCommands(d->path, d->source.cmd.count(), d->source.cmd.constData(), - d->source.coord.count(), GL_FLOAT, d->source.coord.constData()); - } else { - nvpr.pathString(d->path, GL_PATH_FORMAT_SVG_NV, d->source.str.count(), d->source.str.constData()); - } - } - - if (d->dirty & QQuickShapeNvprRenderer::DirtyStyle) { - nvpr.pathParameterf(d->path, GL_PATH_STROKE_WIDTH_NV, d->strokeWidth); - nvpr.pathParameteri(d->path, GL_PATH_JOIN_STYLE_NV, d->joinStyle); - nvpr.pathParameteri(d->path, GL_PATH_MITER_LIMIT_NV, d->miterLimit); - nvpr.pathParameteri(d->path, GL_PATH_END_CAPS_NV, d->capStyle); - nvpr.pathParameteri(d->path, GL_PATH_DASH_CAPS_NV, d->capStyle); - } - - if (d->dirty & QQuickShapeNvprRenderer::DirtyDash) { - nvpr.pathParameterf(d->path, GL_PATH_DASH_OFFSET_NV, d->dashOffset); - // count == 0 -> no dash - nvpr.pathDashArray(d->path, d->dashPattern.count(), d->dashPattern.constData()); - } - - if (d->dirty) - d->fallbackValid = false; -} - -void QQuickShapeNvprRenderNode::renderStroke(ShapePathRenderData *d, int strokeStencilValue, int writeMask) -{ - QQuickNvprMaterialManager::MaterialDesc *mtl = mtlmgr.activateMaterial(QQuickNvprMaterialManager::MatSolid); - f->glProgramUniform4f(mtl->prg, mtl->uniLoc[0], - d->strokeColor.x(), d->strokeColor.y(), d->strokeColor.z(), d->strokeColor.w()); - f->glProgramUniform1f(mtl->prg, mtl->uniLoc[1], inheritedOpacity()); - - nvpr.stencilThenCoverStrokePath(d->path, strokeStencilValue, writeMask, GL_CONVEX_HULL_NV); -} - -void QQuickShapeNvprRenderNode::renderFill(ShapePathRenderData *d) -{ - QQuickNvprMaterialManager::MaterialDesc *mtl = nullptr; - if (d->fillGradientActive) { - QQuickShapeGradient::SpreadMode spread = d->fillGradient.spread; - if (d->fillGradientActive == QQuickAbstractPathRenderer::LinearGradient) { - mtl = mtlmgr.activateMaterial(QQuickNvprMaterialManager::MatLinearGradient); - // uv = vec2(coeff[0] * x + coeff[1] * y + coeff[2], coeff[3] * x + coeff[4] * y + coeff[5]) - // where x and y are in path coordinate space, which is just what - // we need since the gradient's start and stop are in that space too. - GLfloat coeff[6] = { 1, 0, 0, - 0, 1, 0 }; - nvpr.programPathFragmentInputGen(mtl->prg, 0, GL_OBJECT_LINEAR_NV, 2, coeff); - f->glProgramUniform2f(mtl->prg, mtl->uniLoc[2], d->fillGradient.a.x(), d->fillGradient.a.y()); - f->glProgramUniform2f(mtl->prg, mtl->uniLoc[3], d->fillGradient.b.x(), d->fillGradient.b.y()); - } else if (d->fillGradientActive == QQuickAbstractPathRenderer::RadialGradient) { - mtl = mtlmgr.activateMaterial(QQuickNvprMaterialManager::MatRadialGradient); - // simply drive uv (location 0) with x and y, just like for the linear gradient - GLfloat coeff[6] = { 1, 0, 0, - 0, 1, 0 }; - nvpr.programPathFragmentInputGen(mtl->prg, 0, GL_OBJECT_LINEAR_NV, 2, coeff); - - const QPointF centerPoint = d->fillGradient.a; - const QPointF focalPoint = d->fillGradient.b; - const QPointF focalToCenter = centerPoint - focalPoint; - const GLfloat centerRadius = d->fillGradient.v0; - const GLfloat focalRadius = d->fillGradient.v1; - - f->glProgramUniform2f(mtl->prg, mtl->uniLoc[2], focalToCenter.x(), focalToCenter.y()); - f->glProgramUniform1f(mtl->prg, mtl->uniLoc[3], centerRadius); - f->glProgramUniform1f(mtl->prg, mtl->uniLoc[4], focalRadius); - f->glProgramUniform2f(mtl->prg, mtl->uniLoc[5], focalPoint.x(), focalPoint.y()); - } else if (d->fillGradientActive == QQuickAbstractPathRenderer::ConicalGradient) { - mtl = mtlmgr.activateMaterial(QQuickNvprMaterialManager::MatConicalGradient); - // same old - GLfloat coeff[6] = { 1, 0, 0, - 0, 1, 0 }; - nvpr.programPathFragmentInputGen(mtl->prg, 0, GL_OBJECT_LINEAR_NV, 2, coeff); - - const QPointF centerPoint = d->fillGradient.a; - const GLfloat angle = -qDegreesToRadians(d->fillGradient.v0); - - f->glProgramUniform1f(mtl->prg, mtl->uniLoc[2], angle); - f->glProgramUniform2f(mtl->prg, mtl->uniLoc[3], centerPoint.x(), centerPoint.y()); - - spread = QQuickShapeGradient::RepeatSpread; - } else { - Q_UNREACHABLE(); - } - const QQuickShapeGradientCache::Key cacheKey(d->fillGradient.stops, spread); - QSGTexture *tx = QQuickShapeGradientCache::currentCache()->get(cacheKey); - tx->bind(); - } else { - mtl = mtlmgr.activateMaterial(QQuickNvprMaterialManager::MatSolid); - f->glProgramUniform4f(mtl->prg, mtl->uniLoc[0], - d->fillColor.x(), d->fillColor.y(), d->fillColor.z(), d->fillColor.w()); - } - f->glProgramUniform1f(mtl->prg, mtl->uniLoc[1], inheritedOpacity()); - - const int writeMask = 0xFF; - nvpr.stencilThenCoverFillPath(d->path, d->fillRule, writeMask, GL_BOUNDING_BOX_NV); -} - -void QQuickShapeNvprRenderNode::renderOffscreenFill(ShapePathRenderData *d) -{ - if (d->fallbackValid && d->fallbackFbo) - return; - - GLfloat bb[4]; - nvpr.getPathParameterfv(d->path, GL_PATH_STROKE_BOUNDING_BOX_NV, bb); - QSize sz = QSizeF(bb[2] - bb[0] + 1, bb[3] - bb[1] + 1).toSize(); - d->fallbackSize = QSize(qMax(32, sz.width()), qMax(32, sz.height())); - d->fallbackTopLeft = QPointF(bb[0], bb[1]); - - if (d->fallbackFbo && d->fallbackFbo->size() != d->fallbackSize) { - delete d->fallbackFbo; - d->fallbackFbo = nullptr; - } - if (!d->fallbackFbo) - d->fallbackFbo = new QOpenGLFramebufferObject(d->fallbackSize, QOpenGLFramebufferObject::CombinedDepthStencil); - if (!d->fallbackFbo->bind()) - return; - - GLint prevViewport[4]; - f->glGetIntegerv(GL_VIEWPORT, prevViewport); - - f->glViewport(0, 0, d->fallbackSize.width(), d->fallbackSize.height()); - f->glDisable(GL_DEPTH_TEST); - f->glClearColor(0, 0, 0, 0); - f->glClearStencil(0); - f->glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); - f->glStencilFunc(GL_NOTEQUAL, 0, 0xFF); - f->glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); - - QMatrix4x4 mv; - mv.translate(-d->fallbackTopLeft.x(), -d->fallbackTopLeft.y()); - nvpr.matrixLoadf(GL_PATH_MODELVIEW_NV, mv.constData()); - QMatrix4x4 proj; - proj.ortho(0, d->fallbackSize.width(), d->fallbackSize.height(), 0, 1, -1); - nvpr.matrixLoadf(GL_PATH_PROJECTION_NV, proj.constData()); - - renderFill(d); - - d->fallbackFbo->release(); - f->glEnable(GL_DEPTH_TEST); - f->glViewport(prevViewport[0], prevViewport[1], prevViewport[2], prevViewport[3]); - - d->fallbackValid = true; -} - -void QQuickShapeNvprRenderNode::setupStencilForCover(bool stencilClip, int sv) -{ - if (!stencilClip) { - // Assume stencil buffer is cleared to 0 for each frame. - // Within the frame dppass=GL_ZERO for glStencilOp ensures stencil is reset and so no need to clear. - f->glStencilFunc(GL_NOTEQUAL, 0, 0xFF); - f->glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO); - } else { - f->glStencilFunc(GL_LESS, sv, 0xFF); // pass if (sv & 0xFF) < (stencil_value & 0xFF) - f->glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE); // dppass: replace with the original value (clip's stencil ref value) - } -} - -void QQuickShapeNvprRenderNode::render(const RenderState *state) -{ - f = QOpenGLContext::currentContext()->extraFunctions(); - - if (!nvprInited) { - if (!nvpr.create()) { - qWarning("NVPR init failed"); - return; - } - mtlmgr.create(&nvpr); - nvprInited = true; - } - - f->glUseProgram(0); - f->glStencilMask(~0); - f->glEnable(GL_STENCIL_TEST); - - const bool stencilClip = state->stencilEnabled(); - // when true, the stencil buffer already has a clip path with a ref value of sv - const int sv = state->stencilValue(); - const bool hasScissor = state->scissorEnabled(); - - if (hasScissor) { - // scissor rect is already set, just enable scissoring - f->glEnable(GL_SCISSOR_TEST); - } - - // Depth test against the opaque batches rendered before. - f->glEnable(GL_DEPTH_TEST); - f->glDepthFunc(GL_LESS); - nvpr.pathCoverDepthFunc(GL_LESS); - nvpr.pathStencilDepthOffset(-0.05f, -1); - - bool reloadMatrices = true; - - for (ShapePathRenderData &d : m_sp) { - updatePath(&d); - - const bool hasFill = d.hasFill(); - const bool hasStroke = d.hasStroke(); - - if (hasFill && stencilClip) { - // Fall back to a texture when complex clipping is in use and we have - // to fill. Reconciling glStencilFillPath's and the scenegraph's clip - // stencil semantics has not succeeded so far... - if (hasScissor) - f->glDisable(GL_SCISSOR_TEST); - renderOffscreenFill(&d); - reloadMatrices = true; - if (hasScissor) - f->glEnable(GL_SCISSOR_TEST); - } - - if (reloadMatrices) { - reloadMatrices = false; - nvpr.matrixLoadf(GL_PATH_MODELVIEW_NV, matrix()->constData()); - nvpr.matrixLoadf(GL_PATH_PROJECTION_NV, state->projectionMatrix()->constData()); - } - - // Fill! - if (hasFill) { - if (!stencilClip) { - setupStencilForCover(false, 0); - renderFill(&d); - } else { - if (!m_fallbackBlitter.isCreated()) - m_fallbackBlitter.create(); - f->glStencilFunc(GL_EQUAL, sv, 0xFF); - f->glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); - QMatrix4x4 mv = *matrix(); - mv.translate(d.fallbackTopLeft.x(), d.fallbackTopLeft.y()); - m_fallbackBlitter.texturedQuad(d.fallbackFbo->texture(), d.fallbackFbo->size(), - *state->projectionMatrix(), mv, - inheritedOpacity()); - } - } - - // Stroke! - if (hasStroke) { - const int strokeStencilValue = 0x80; - const int writeMask = 0x80; - - setupStencilForCover(stencilClip, sv); - if (stencilClip) { - // for the stencil step (eff. read mask == 0xFF & ~writeMask) - nvpr.pathStencilFunc(GL_EQUAL, sv, 0xFF); - // With stencilCLip == true the read mask for the stencil test before the stencil step is 0x7F. - // This assumes the clip stencil value is <= 127. - if (sv >= strokeStencilValue) - qWarning("Shape/NVPR: stencil clip ref value %d too large; expect rendering errors", sv); - } - - renderStroke(&d, strokeStencilValue, writeMask); - } - - if (stencilClip) - nvpr.pathStencilFunc(GL_ALWAYS, 0, ~0); - - d.dirty = 0; - } - - f->glBindProgramPipeline(0); -} - -QSGRenderNode::StateFlags QQuickShapeNvprRenderNode::changedStates() const -{ - return BlendState | StencilState | DepthState | ScissorState; -} - -QSGRenderNode::RenderingFlags QQuickShapeNvprRenderNode::flags() const -{ - return DepthAwareRendering; // avoid hitting the less optimal no-opaque-batch path in the renderer -} - -bool QQuickShapeNvprRenderNode::isSupported() -{ - static const bool nvprDisabled = qEnvironmentVariableIntValue("QT_NO_NVPR") != 0; - return !nvprDisabled && QQuickNvprFunctions::isSupported(); -} - -bool QQuickNvprBlitter::create() -{ - if (isCreated()) - destroy(); - - m_program = new QOpenGLShaderProgram; - if (QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile) { - m_program->addCacheableShaderFromSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/qt-project.org/shapes/shaders/blit_core.vert")); - m_program->addCacheableShaderFromSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/qt-project.org/shapes/shaders/blit_core.frag")); - } else { - m_program->addCacheableShaderFromSourceFile(QOpenGLShader::Vertex, QStringLiteral(":/qt-project.org/shapes/shaders/blit.vert")); - m_program->addCacheableShaderFromSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/qt-project.org/shapes/shaders/blit.frag")); - } - m_program->bindAttributeLocation("qt_Vertex", 0); - m_program->bindAttributeLocation("qt_MultiTexCoord0", 1); - if (!m_program->link()) - return false; - - m_matrixLoc = m_program->uniformLocation("qt_Matrix"); - m_opacityLoc = m_program->uniformLocation("qt_Opacity"); - - m_buffer = new QOpenGLBuffer; - if (!m_buffer->create()) - return false; - m_buffer->bind(); - m_buffer->allocate(4 * sizeof(GLfloat) * 6); - m_buffer->release(); - - return true; -} - -void QQuickNvprBlitter::destroy() -{ - if (m_program) { - delete m_program; - m_program = nullptr; - } - if (m_buffer) { - delete m_buffer; - m_buffer = nullptr; - } -} - -void QQuickNvprBlitter::texturedQuad(GLuint textureId, const QSize &size, - const QMatrix4x4 &proj, const QMatrix4x4 &modelview, - float opacity) -{ - QOpenGLExtraFunctions *f = QOpenGLContext::currentContext()->extraFunctions(); - - m_program->bind(); - - QMatrix4x4 m = proj * modelview; - m_program->setUniformValue(m_matrixLoc, m); - m_program->setUniformValue(m_opacityLoc, opacity); - - m_buffer->bind(); - - if (size != m_prevSize) { - m_prevSize = size; - - QPointF p0(size.width() - 1, size.height() - 1); - QPointF p1(0, 0); - QPointF p2(0, size.height() - 1); - QPointF p3(size.width() - 1, 0); - - GLfloat vertices[6 * 4] = { - GLfloat(p0.x()), GLfloat(p0.y()), 1, 0, - GLfloat(p1.x()), GLfloat(p1.y()), 0, 1, - GLfloat(p2.x()), GLfloat(p2.y()), 0, 0, - - GLfloat(p0.x()), GLfloat(p0.y()), 1, 0, - GLfloat(p3.x()), GLfloat(p3.y()), 1, 1, - GLfloat(p1.x()), GLfloat(p1.y()), 0, 1, - }; - - m_buffer->write(0, vertices, sizeof(vertices)); - } - - m_program->enableAttributeArray(0); - m_program->enableAttributeArray(1); - f->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), nullptr); - f->glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (const void *) (2 * sizeof(GLfloat))); - - f->glBindTexture(GL_TEXTURE_2D, textureId); - - f->glDrawArrays(GL_TRIANGLES, 0, 6); - - f->glBindTexture(GL_TEXTURE_2D, 0); - m_buffer->release(); - m_program->release(); -} - -QT_END_NAMESPACE |