template <typename R> void call(R *r) {
const auto &view = r->getViewMatrix();
const auto &projection = r->getProjectionMatrix();
for (auto &con : r->getScenario().getWorld().cellCellConnections) {
auto &cc = *(con.second.get());
if (cc.adhCoef > 0) {
shader.bind();
cube.vao.bind();
QColor color = QColor::fromHsvF(cc.adhCoef * 0.45, 0.7, 0.7);
shader.setUniformValue(shader.uniformLocation("color"), color);
shader.setUniformValue(shader.uniformLocation("projection"), projection);
shader.setUniformValue(shader.uniformLocation("view"), view);
QMatrix4x4 model;
auto ab = toQV3D(cc.cells.second->getPosition() - cc.cells.first->getPosition());
model.translate(toQV3D(cc.cells.second->getPosition()) - ab * 0.5);
auto dp = ab.normalized().x();
if (dp != 1 && dp != -1) {
model.rotate(acos(dp) * 180.0 / M_PI,
QVector3D::crossProduct(QVector3D(1, 0, 0), ab));
model.scale(ab.length() * 0.5, 1.0, 1.0);
QMatrix4x4 nmatrix = (model).inverted().transposed();
shader.setUniformValue(shader.uniformLocation("model"), model);
shader.setUniformValue(shader.uniformLocation("normalMatrix"), nmatrix);
GL->glDrawElements(GL_TRIANGLES, cube.indices.size(), GL_UNSIGNED_INT, 0);
}
cube.vao.release();
shader.release();
}
}
}
template <typename R> void call(R *r) {
const auto &view = r->getViewMatrix();
const auto &projection = r->getProjectionMatrix();
shader.bind();
sphere.vao.bind();
texture->bind(0);
shader.setUniformValue(shader.uniformLocation("projection"), projection);
shader.setUniformValue(shader.uniformLocation("view"), view);
for (auto &n : r->getScenario().nutrientSources) {
QMatrix4x4 model;
model.translate(n.pos.x(), n.pos.y(), n.pos.z());
double c = n.content / n.initialcontent;
double l = 15.0 + sqrt(n.sqradius * c) * 0.05;
model.scale(l, l, l);
QMatrix4x4 nmatrix = (model).inverted().transposed();
shader.setUniformValue(shader.uniformLocation("model"), model);
shader.setUniformValue(shader.uniformLocation("normalMatrix"), nmatrix);
auto hsv = QColor::fromHsvF(c * 0.35, 0.9, 0.9);
QVector4D col(hsv.redF(), hsv.greenF(), hsv.blueF(), 0.5);
std::cerr << "c = " << c << ", r = " << col.x() << std::endl;
shader.setUniformValue(shader.uniformLocation("color"), col);
GL->glDrawElements(GL_TRIANGLES, sphere.indices.size(), GL_UNSIGNED_INT, 0);
}
sphere.vao.release();
shader.release();
}
void
Scene_polylines_item::initializeBuffers(CGAL::Three::Viewer_interface *viewer = 0) const
{
QOpenGLShaderProgram *program;
//vao for the lines
{
program = getShaderProgram(PROGRAM_NO_SELECTION, viewer);
program->bind();
vaos[Edges]->bind();
buffers[Edges_Vertices].bind();
buffers[Edges_Vertices].allocate(positions_lines.data(),
static_cast<int>(positions_lines.size()*sizeof(float)));
program->enableAttributeArray("vertex");
program->setAttributeBuffer("vertex",GL_FLOAT,0,4);
buffers[Edges_Vertices].release();
vaos[Edges]->release();
program->release();
nb_lines = positions_lines.size();
positions_lines.clear();
positions_lines.swap(positions_lines);
}
are_buffers_filled = true;
}
void Painter::paint_3_2_label(
const QMatrix4x4 & viewProjection
, float timef)
{
QOpenGLShaderProgram * program;
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glActiveTexture(GL_TEXTURE0);
program = m_programs[LabelDistanceMapProgram];
program->bind();
glBindTexture(GL_TEXTURE_2D, m_hpicgsLabelDM);
program->setUniformValue("mvp", viewProjection * m_transforms[0]);
m_hpicgsLabel->draw(*this);
glBindTexture(GL_TEXTURE_2D, m_portccLabelDM);
program->setUniformValue("mvp", viewProjection * m_transforms[1]);
m_portccLabel->draw(*this);
program->release();
glBindTexture(GL_TEXTURE_2D, 0);
glDisable(GL_BLEND);
}
void
Scene_polylines_item_private::initializeBuffers(CGAL::Three::Viewer_interface *viewer = 0) const
{
float lineWidth[2];
viewer->glGetFloatv(GL_LINE_WIDTH_RANGE, lineWidth);
line_Slider->setMaximum(lineWidth[1]);
QOpenGLShaderProgram *program;
//vao for the lines
{
program = item->getShaderProgram(Scene_polylines_item::PROGRAM_NO_SELECTION, viewer);
program->bind();
item->vaos[Edges]->bind();
item->buffers[Edges_Vertices].bind();
item->buffers[Edges_Vertices].allocate(positions_lines.data(),
static_cast<int>(positions_lines.size()*sizeof(float)));
program->enableAttributeArray("vertex");
program->setAttributeBuffer("vertex",GL_FLOAT,0,4);
item->buffers[Edges_Vertices].release();
item->vaos[Edges]->release();
program->release();
nb_lines = positions_lines.size();
positions_lines.clear();
positions_lines.swap(positions_lines);
}
item->are_buffers_filled = true;
}
template <typename R> void call(R *r) {
using V = decltype(declval<typename R::Cell>().getPosition());
const auto &view = r->getViewMatrix();
const auto &projection = r->getProjectionMatrix();
shader.bind();
disk.vao.bind();
QVector4D color(0.9f, 0.9f, 0.05f, 1.0f);
shader.setUniformValue(shader.uniformLocation("color"), color);
shader.setUniformValue(shader.uniformLocation("projection"), projection);
shader.setUniformValue(shader.uniformLocation("view"), view);
for (auto &con : r->getScenario().getWorld().cellCellConnections) {
auto &cc = con.second;
QMatrix4x4 model;
model.translate(
toQV3D(cc.cells.first->getPosition() + cc.normal * cc.midpoint.first));
auto rot = V::getRotation(V(0, 0, 1), cc.normal);
model.rotate(rot.teta * 180.0 / M_PI, toQV3D(rot.n));
float rad = static_cast<float>(sqrt(cc.sqradius));
model.scale(rad, rad, rad);
QMatrix4x4 nmatrix = (model).inverted().transposed();
shader.setUniformValue(shader.uniformLocation("model"), model);
shader.setUniformValue(shader.uniformLocation("normalMatrix"), nmatrix);
GL->glDrawElements(GL_TRIANGLES, disk.indices.size(), GL_UNSIGNED_INT, 0);
}
color = QVector4D(0.1f, 0.7f, 0.f, 1.0f);
shader.setUniformValue(shader.uniformLocation("color"), color);
for (auto &con : r->getScenario().getWorld().cellCellConnections) {
auto &cc = con.second;
QMatrix4x4 model;
model.translate(toQV3D(cc.cells.first->getPosition() +
cc.icb.first.currentBasis.X * cc.midpoint.first));
auto rot = V::getRotation(V(0, 0, 1), cc.icb.first.currentBasis.X);
model.rotate(rot.teta * 180.0 / M_PI, toQV3D(rot.n));
float rad = static_cast<float>(sqrt(cc.sqradius));
model.scale(rad, rad, rad);
QMatrix4x4 nmatrix = (model).inverted().transposed();
shader.setUniformValue(shader.uniformLocation("model"), model);
shader.setUniformValue(shader.uniformLocation("normalMatrix"), nmatrix);
GL->glDrawElements(GL_TRIANGLES, disk.indices.size(), GL_UNSIGNED_INT, 0);
}
color = QVector4D(0.f, 0.1f, 0.7f, 1.0f);
shader.setUniformValue(shader.uniformLocation("color"), color);
for (auto &con : r->getScenario().getWorld().cellCellConnections) {
auto &cc = con.second;
QMatrix4x4 model;
model.translate(toQV3D(cc.cells.second->getPosition() +
cc.icb.second.currentBasis.X * cc.midpoint.second));
auto rot = V::getRotation(V(0, 0, 1), cc.icb.second.currentBasis.X);
model.rotate(rot.teta * 180.0 / M_PI, toQV3D(rot.n));
float rad = static_cast<float>(sqrt(cc.sqradius));
model.scale(rad, rad, rad);
QMatrix4x4 nmatrix = (model).inverted().transposed();
shader.setUniformValue(shader.uniformLocation("model"), model);
shader.setUniformValue(shader.uniformLocation("normalMatrix"), nmatrix);
GL->glDrawElements(GL_TRIANGLES, disk.indices.size(), GL_UNSIGNED_INT, 0);
}
disk.vao.release();
shader.release();
}
/******************************************************************************
* Renders a 2d polyline in the viewport.
******************************************************************************/
void ViewportSceneRenderer::render2DPolyline(const Point2* points, int count, const ColorA& color, bool closed)
{
OVITO_STATIC_ASSERT(sizeof(points[0]) == 2*sizeof(GLfloat));
// Load OpenGL shader.
QOpenGLShaderProgram* shader = loadShaderProgram("line", ":/core/glsl/lines/line.vs", ":/core/glsl/lines/line.fs");
if(!shader->bind())
throw Exception(tr("Failed to bind OpenGL shader."));
bool wasDepthTestEnabled = glIsEnabled(GL_DEPTH_TEST);
glDisable(GL_DEPTH_TEST);
GLint vc[4];
glGetIntegerv(GL_VIEWPORT, vc);
QMatrix4x4 tm;
tm.ortho(vc[0], vc[0] + vc[2], vc[1] + vc[3], vc[1], -1, 1);
OVITO_CHECK_OPENGL(shader->setUniformValue("modelview_projection_matrix", tm));
QOpenGLBuffer vertexBuffer;
if(glformat().majorVersion() >= 3) {
if(!vertexBuffer.create())
throw Exception(tr("Failed to create OpenGL vertex buffer."));
if(!vertexBuffer.bind())
throw Exception(tr("Failed to bind OpenGL vertex buffer."));
vertexBuffer.allocate(points, 2 * sizeof(GLfloat) * count);
OVITO_CHECK_OPENGL(shader->enableAttributeArray("position"));
OVITO_CHECK_OPENGL(shader->setAttributeBuffer("position", GL_FLOAT, 0, 2));
vertexBuffer.release();
}
else {
OVITO_CHECK_OPENGL(glEnableClientState(GL_VERTEX_ARRAY));
OVITO_CHECK_OPENGL(glVertexPointer(2, GL_FLOAT, 0, points));
}
if(glformat().majorVersion() >= 3) {
OVITO_CHECK_OPENGL(shader->disableAttributeArray("color"));
OVITO_CHECK_OPENGL(shader->setAttributeValue("color", color.r(), color.g(), color.b(), color.a()));
}
else {
OVITO_CHECK_OPENGL(glColor4(color));
}
OVITO_CHECK_OPENGL(glDrawArrays(closed ? GL_LINE_LOOP : GL_LINE_STRIP, 0, count));
if(glformat().majorVersion() >= 3) {
shader->disableAttributeArray("position");
}
else {
OVITO_CHECK_OPENGL(glDisableClientState(GL_VERTEX_ARRAY));
}
shader->release();
if(wasDepthTestEnabled) glEnable(GL_DEPTH_TEST);
}
/******************************************************************************
* Renders the geometry as triangle mesh with normals.
******************************************************************************/
void OpenGLArrowPrimitive::renderWithNormals(ViewportSceneRenderer* renderer)
{
QOpenGLShaderProgram* shader = renderer->isPicking() ? _pickingShader : _shader;
if(!shader->bind())
throw Exception(QStringLiteral("Failed to bind OpenGL shader."));
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
shader->setUniformValue("modelview_projection_matrix", (QMatrix4x4)(renderer->projParams().projectionMatrix * renderer->modelViewTM()));
if(!renderer->isPicking())
shader->setUniformValue("normal_matrix", (QMatrix3x3)(renderer->modelViewTM().linear().inverse().transposed()));
GLint pickingBaseID;
if(renderer->isPicking()) {
pickingBaseID = renderer->registerSubObjectIDs(elementCount());
renderer->activateVertexIDs(shader, _chunkSize * _verticesPerElement, true);
}
for(int chunkIndex = 0; chunkIndex < _verticesWithNormals.size(); chunkIndex++, pickingBaseID += _chunkSize) {
int chunkStart = chunkIndex * _chunkSize;
int chunkSize = std::min(_elementCount - chunkStart, _chunkSize);
if(renderer->isPicking())
shader->setUniformValue("pickingBaseID", pickingBaseID);
_verticesWithNormals[chunkIndex].bindPositions(renderer, shader, offsetof(VertexWithNormal, pos));
if(!renderer->isPicking()) {
_verticesWithNormals[chunkIndex].bindNormals(renderer, shader, offsetof(VertexWithNormal, normal));
_verticesWithNormals[chunkIndex].bindColors(renderer, shader, 4, offsetof(VertexWithNormal, color));
}
int stripPrimitivesPerElement = _stripPrimitiveVertexCounts.size() / _chunkSize;
int stripVerticesPerElement = std::accumulate(_stripPrimitiveVertexCounts.begin(), _stripPrimitiveVertexCounts.begin() + stripPrimitivesPerElement, 0);
OVITO_CHECK_OPENGL(shader->setUniformValue("verticesPerElement", (GLint)stripVerticesPerElement));
OVITO_CHECK_OPENGL(renderer->glMultiDrawArrays(GL_TRIANGLE_STRIP, _stripPrimitiveVertexStarts.data(), _stripPrimitiveVertexCounts.data(), stripPrimitivesPerElement * chunkSize));
int fanPrimitivesPerElement = _fanPrimitiveVertexCounts.size() / _chunkSize;
int fanVerticesPerElement = std::accumulate(_fanPrimitiveVertexCounts.begin(), _fanPrimitiveVertexCounts.begin() + fanPrimitivesPerElement, 0);
OVITO_CHECK_OPENGL(shader->setUniformValue("verticesPerElement", (GLint)fanVerticesPerElement));
OVITO_CHECK_OPENGL(renderer->glMultiDrawArrays(GL_TRIANGLE_FAN, _fanPrimitiveVertexStarts.data(), _fanPrimitiveVertexCounts.data(), fanPrimitivesPerElement * chunkSize));
_verticesWithNormals[chunkIndex].detachPositions(renderer, shader);
if(!renderer->isPicking()) {
_verticesWithNormals[chunkIndex].detachNormals(renderer, shader);
_verticesWithNormals[chunkIndex].detachColors(renderer, shader);
}
}
if(renderer->isPicking())
renderer->deactivateVertexIDs(shader, true);
shader->release();
}
void useShader(QOpenGLShaderProgram& _s,
std::function<void(UniformHandler&)>f) {
withCurrentContext([&](QOpenGLFunctions& _gl) {
_s.bind();
{
UniformHandler _handler(_gl, _s);
f(_handler);
// Destructor of handler is called here implicitly
// by RAII to unbind all textures
}
_s.release();
});
}
void OpenGLWidgetPrivate::render()
{
const qreal retinaScale = q->devicePixelRatio();
glViewport(0, 0, width() * retinaScale, height() * retinaScale);
glClearColor(clearColor[0], clearColor[1], clearColor[2], 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
m_program->bind();
QMatrix4x4 matrix;
matrix.perspective(60.0f, 4.0f/3.0f, 0.1f, 100.0f);
matrix.translate(0, 0, -2);
const qreal angle = 100.0f * m_frame / 30;
matrix.rotate(angle, m_rotAxis);
m_program->setUniformValue(m_matrixUniform, matrix);
GLfloat vertices[] = {
0.0f, 0.707f,
-0.5f, -0.5f,
0.5f, -0.5f
};
GLfloat colors[] = {
1.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 1.0f
};
glVertexAttribPointer(m_posAttr, 2, GL_FLOAT, GL_FALSE, 0, vertices);
glVertexAttribPointer(m_colAttr, 3, GL_FLOAT, GL_FALSE, 0, colors);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawArrays(GL_TRIANGLES, 0, 3);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
m_program->release();
++m_frame;
if (m_interval <= 0)
q->update();
}
void AssimpScene::draw(
OpenGLFunctions & gl
, QOpenGLShaderProgram & program
, const GLenum mode)
{
if (!m_valid)
return;
if (!program.isLinked())
return;
std::vector<AssimpMesh *>::const_iterator i = m_meshes.begin();
const std::vector<AssimpMesh *>::const_iterator iEnd = m_meshes.end();
program.bind();
program.setUniformValue("model", m_transform * m_normalize);
for (; i != iEnd; ++i)
{
AssimpMesh * mesh(*i);
program.setUniformValue("diffuse", mesh->material.diffuse);
program.setUniformValue("ambient", mesh->material.ambient);
program.setUniformValue("specular", mesh->material.specular);
program.setUniformValue("emissive", mesh->material.emissive);
program.setUniformValue("shininess", mesh->material.shininess);
program.setUniformValue("texCount", mesh->material.texCount);
if (mesh->material.texCount > 0)
{
program.setUniformValue("difftex", 0);
gl.glActiveTexture(GL_TEXTURE0);
gl.glBindTexture(GL_TEXTURE_2D, mesh->material.texture);
}
mesh->vao.bind();
gl.glDrawElements(mode, mesh->faces * 3, GL_UNSIGNED_INT, nullptr);
mesh->vao.release();
if (mesh->material.texCount > 0)
gl.glBindTexture(GL_TEXTURE_2D, 0);
}
program.release();
}
//! [5]
void TriangleWindow::render()
{
const qreal retinaScale = devicePixelRatio();
glViewport(0, 0, width() * retinaScale, height() * retinaScale);
glClear(GL_COLOR_BUFFER_BIT);
m_program->bind();
QMatrix4x4 matrix;
matrix.perspective(60.0f, 4.0f/3.0f, 0.1f, 100.0f);
matrix.translate(0, 0, -2);
matrix.rotate(100.0f * m_frame / screen()->refreshRate(), 0, 1, 0);
m_program->setUniformValue(m_matrixUniform, matrix);
GLfloat vertices[] = {
0.0f, 0.707f,
-0.5f, -0.5f,
0.5f, -0.5f
};
GLfloat colors[] = {
1.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 1.0f
};
glVertexAttribPointer(m_posAttr, 2, GL_FLOAT, GL_FALSE, 0, vertices);
glVertexAttribPointer(m_colAttr, 3, GL_FLOAT, GL_FALSE, 0, colors);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawArrays(GL_TRIANGLES, 0, 3);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
m_program->release();
++m_frame;
}
void Painter::renderScene(const Camera &camera)
{
m_envMap->paint(camera);
/* Paint gems */
QOpenGLShaderProgram *gemProgram = (*m_shaderPrograms)[ShaderPrograms::GemProgram];
gemProgram->bind();
gemProgram->enableAttributeArray(0);
gemProgram->enableAttributeArray(1);
gemProgram->setUniformValue("envmap", 0);
gemProgram->setUniformValue("gemStructureMap", 1);
gemProgram->setUniformValue("rainbowMap", 2);
gemProgram->setUniformValue("eye", camera.eye());
gemProgram->setUniformValue("viewProjection", camera.viewProjection());
m_gl->glActiveTexture(GL_TEXTURE0);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, m_envMap->cubeMapTexture());
m_gl->glActiveTexture(GL_TEXTURE1);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, m_gemStructureMap->cubeMapTexture());
m_gl->glActiveTexture(GL_TEXTURE2);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, m_rainbowMap->cubeMapTexture());
QHash<ShaderPrograms, QOpenGLShaderProgram*> shaderPrograms;
shaderPrograms.insert(ShaderPrograms::GemProgram, m_shaderPrograms->value(ShaderPrograms::GemProgram));
shaderPrograms.insert(ShaderPrograms::LighRayProgram, m_shaderPrograms->value(ShaderPrograms::LighRayProgram));
m_sceneRenderer->paint(*m_gl, camera.viewProjection(), shaderPrograms);
m_gl->glActiveTexture(GL_TEXTURE0);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
m_gl->glActiveTexture(GL_TEXTURE1);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
m_gl->glActiveTexture(GL_TEXTURE2);
m_gl->glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
m_gl->glBindTexture(GL_TEXTURE_2D, 0);
gemProgram->disableAttributeArray(0);
gemProgram->disableAttributeArray(1);
gemProgram->release();
}
// Wireframe OpenGL drawing
void
Scene_polylines_item::drawEdges(CGAL::Three::Viewer_interface* viewer) const {
if(!are_buffers_filled)
{
computeElements();
initializeBuffers(viewer);
}
vaos[Edges]->bind();
attribBuffers(viewer, PROGRAM_NO_SELECTION);
QOpenGLShaderProgram *program = getShaderProgram(PROGRAM_NO_SELECTION);
program->bind();
program->setAttributeValue("colors", this->color());
viewer->glDrawArrays(GL_LINES, 0, static_cast<GLsizei>(nb_lines/4));
program->release();
vaos[Edges]->release();
if(d->draw_extremities)
{
Scene_group_item::drawEdges(viewer);
}
}
// Build a passthrough glsl program
QOpenGLShaderProgram* GLImageProcessor::buildPassthorughProgram() const
{
QOpenGLShaderProgram* prog = new QOpenGLShaderProgram();
QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, prog);
const char *vsrc =
"attribute highp vec4 in_Vertex;\n"
"attribute mediump vec4 in_TexCoord;\n"
"varying mediump vec4 texCoord;\n"
"void main(void)\n"
"{\n"
" gl_Position = in_Vertex;\n"
" texCoord = in_TexCoord;\n"
"}\n";
vshader->compileSourceCode(vsrc);
QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, prog);
const char *fsrc =
"uniform sampler2D in_Texture;\n"
"varying mediump vec4 texCoord;\n"
"void main(void)\n"
"{\n"
" gl_FragColor = texture2D(in_Texture, texCoord.st);\n"
"}\n";
fshader->compileSourceCode(fsrc);
prog->addShader(vshader);
prog->addShader(fshader);
prog->bindAttributeLocation("in_Vertex", 0);
prog->bindAttributeLocation("in_TexCoord", 1);
prog->link();
prog->bind();
prog->setUniformValue("in_Texture", 0);
prog->release();
return prog;
}
template <typename R> void call(R *r) {
const auto &view = r->getViewMatrix();
const auto &projection = r->getProjectionMatrix();
const float l = 100000.0f;
shader.bind();
quad.vao.bind();
texture->bind(0);
GL->glActiveTexture(GL_TEXTURE0);
GL->glBindTexture(GL_TEXTURE_2D, texture->textureId());
shader.setUniformValue(shader.uniformLocation("tex"), 0);
shader.setUniformValue(shader.uniformLocation("projection"), projection);
shader.setUniformValue(shader.uniformLocation("view"), view);
shader.setUniformValue(shader.uniformLocation("texrepeat"), 300.0f);
shader.setUniformValue(shader.uniformLocation("alpha"), 0.8f);
QMatrix4x4 model;
model.rotate(90.0f, QVector3D(1, 0, 0));
model.translate(QVector3D(0, 0, 0));
model.scale(l, l, l);
shader.setUniformValue(shader.uniformLocation("model"), model);
GL->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
quad.vao.release();
shader.release();
}
void Viewer::drawVisualHints()
{
CGAL::QGLViewer::drawVisualHints();
if(d->distance_is_displayed)
{
glDisable(GL_DEPTH_TEST);
QMatrix4x4 mvpMatrix;
double mat[16];
camera()->getModelViewProjectionMatrix(mat);
for(int i=0; i < 16; i++)
{
mvpMatrix.data()[i] = (float)mat[i];
}
if(!isOpenGL_4_3())
{
//draws the distance
//nullifies the translation
d->rendering_program_dist.bind();
d->rendering_program_dist.setUniformValue("mvp_matrix", mvpMatrix);
d->rendering_program_dist.setUniformValue("point_size", GLfloat(6.0f));
d->vao.bind();
glDrawArrays(GL_POINTS, 0, static_cast<GLsizei>(2));
glDrawArrays(GL_LINES, 0, static_cast<GLsizei>(2));
d->vao.release();
d->rendering_program_dist.release();
glEnable(GL_DEPTH_TEST);
}
else
{
QOpenGLShaderProgram* program = getShaderProgram(PROGRAM_SOLID_WIREFRAME);
program->bind();
QVector2D vp(width(), height());
program->setUniformValue("viewport", vp);
program->setUniformValue("near",(GLfloat)camera()->zNear());
program->setUniformValue("far",(GLfloat)camera()->zFar());
program->setUniformValue("width", GLfloat(3.0f));
program->setAttributeValue("colors", QColor(Qt::black));
program->setUniformValue("mvp_matrix", mvpMatrix);
QMatrix4x4 f_mat;
f_mat.setToIdentity();
program->setUniformValue("f_matrix", f_mat);
d->vao.bind();
glDrawArrays(GL_LINES, 0, static_cast<GLsizei>(2));
d->vao.release();
program->release();
program = getShaderProgram(PROGRAM_NO_SELECTION);
program->bind();
program->setAttributeValue("colors", QColor(Qt::black));
program->setAttributeValue("point_size", 6.0f);
program->setUniformValue("mvp_matrix", mvpMatrix);
program->setUniformValue("f_matrix", f_mat);
d->vao.bind();
glDrawArrays(GL_POINTS, 0, static_cast<GLsizei>(2));
d->vao.release();
program->release();
}
}
if (!d->painter->isActive())
d->painter->begin(this);
//So that the text is drawn in front of everything
d->painter->beginNativePainting();
glDisable(GL_DEPTH_TEST);
d->painter->endNativePainting();
//Prints the displayMessage
QFont font = QFont();
QFontMetrics fm(font);
TextItem *message_text = new TextItem(float(10 + fm.width(d->message)/2),
float(height()-20),
0, d->message, false,
QFont(), Qt::gray );
if (d->_displayMessage)
{
d->textRenderer->addText(message_text);
}
d->textRenderer->draw(this);
if (d->_displayMessage)
d->textRenderer->removeText(message_text);
}
void Viewer::attribBuffers(int program_name) const {
//ModelViewMatrix used for the transformation of the camera.
QMatrix4x4 mvp_mat;
// ModelView Matrix used for the lighting system
QMatrix4x4 mv_mat;
// transformation of the manipulated frame
QMatrix4x4 f_mat;
f_mat.setToIdentity();
//fills the MVP and MV matrices.
GLdouble d_mat[16];
this->camera()->getModelViewMatrix(d_mat);
for (int i=0; i<16; ++i)
mv_mat.data()[i] = GLfloat(d_mat[i]);
this->camera()->getModelViewProjectionMatrix(d_mat);
for (int i=0; i<16; ++i)
mvp_mat.data()[i] = GLfloat(d_mat[i]);
QVector4D position(0.0f,0.0f,1.0f, 1.0f );
QVector4D ambient(0.4f, 0.4f, 0.4f, 0.4f);
// Diffuse
QVector4D diffuse(1.0f, 1.0f, 1.0f, 1.0f);
// Specular
QVector4D specular(0.0f, 0.0f, 0.0f, 1.0f);
QOpenGLShaderProgram* program = getShaderProgram(program_name);
program->bind();
program->setUniformValue("point_size", getGlPointSize());
program->setUniformValue("mvp_matrix", mvp_mat);
program->setUniformValue("is_clipbox_on", d->clipping);
if(d->clipping)
{
QMatrix4x4 clipbox1;
QMatrix4x4 clipbox2;
for(int i=0;i<12;++i)
{
clipbox1.data()[i]=d->clipbox[i/4][i%4];
clipbox2.data()[i]=d->clipbox[(i+12)/4][(i+12)%4];
}
program->setUniformValue("clipbox1", clipbox1);
program->setUniformValue("clipbox2", clipbox2);
}
switch(program_name)
{
case PROGRAM_WITH_LIGHT:
case PROGRAM_SPHERES:
case PROGRAM_CUTPLANE_SPHERES:
program->setUniformValue("alpha", 1.0f); //overriden in item draw() if necessary
}
switch(program_name)
{
case PROGRAM_WITH_LIGHT:
case PROGRAM_C3T3:
case PROGRAM_PLANE_TWO_FACES:
case PROGRAM_INSTANCED:
case PROGRAM_WITH_TEXTURE:
case PROGRAM_CUTPLANE_SPHERES:
case PROGRAM_SPHERES:
case PROGRAM_OLD_FLAT:
case PROGRAM_FLAT:
program->setUniformValue("light_pos", position);
program->setUniformValue("light_diff",diffuse);
program->setUniformValue("light_spec", specular);
program->setUniformValue("light_amb", ambient);
program->setUniformValue("spec_power", 51.8f);
program->setUniformValue("is_two_side", d->twosides);
break;
}
switch(program_name)
{
case PROGRAM_WITH_LIGHT:
case PROGRAM_C3T3:
case PROGRAM_PLANE_TWO_FACES:
case PROGRAM_INSTANCED:
case PROGRAM_CUTPLANE_SPHERES:
case PROGRAM_SPHERES:
case PROGRAM_OLD_FLAT:
case PROGRAM_FLAT:
program->setUniformValue("mv_matrix", mv_mat);
break;
case PROGRAM_WITHOUT_LIGHT:
case PROGRAM_SOLID_WIREFRAME:
program->setUniformValue("f_matrix",f_mat);
break;
case PROGRAM_WITH_TEXTURE:
program->setUniformValue("mv_matrix", mv_mat);
program->setUniformValue("s_texture",0);
program->setUniformValue("f_matrix",f_mat);
break;
case PROGRAM_WITH_TEXTURED_EDGES:
program->setUniformValue("s_texture",0);
break;
case PROGRAM_NO_SELECTION:
program->setUniformValue("f_matrix",f_mat);
break;
}
program->release();
}
/******************************************************************************
* Renders the geometry as with extra information passed to the vertex shader.
******************************************************************************/
void OpenGLArrowPrimitive::renderWithElementInfo(ViewportSceneRenderer* renderer)
{
QOpenGLShaderProgram* shader = renderer->isPicking() ? _pickingShader : _shader;
if(!shader)
return;
if(!shader->bind())
throw Exception(QStringLiteral("Failed to bind OpenGL shader."));
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
shader->setUniformValue("modelview_matrix",
(QMatrix4x4)renderer->modelViewTM());
shader->setUniformValue("modelview_uniform_scale", (float)pow(std::abs(renderer->modelViewTM().determinant()), (FloatType(1.0/3.0))));
shader->setUniformValue("modelview_projection_matrix",
(QMatrix4x4)(renderer->projParams().projectionMatrix * renderer->modelViewTM()));
shader->setUniformValue("projection_matrix", (QMatrix4x4)renderer->projParams().projectionMatrix);
shader->setUniformValue("inverse_projection_matrix", (QMatrix4x4)renderer->projParams().inverseProjectionMatrix);
shader->setUniformValue("is_perspective", renderer->projParams().isPerspective);
AffineTransformation viewModelTM = renderer->modelViewTM().inverse();
Vector3 eye_pos = viewModelTM.translation();
shader->setUniformValue("eye_pos", eye_pos.x(), eye_pos.y(), eye_pos.z());
Vector3 viewDir = viewModelTM * Vector3(0,0,1);
shader->setUniformValue("parallel_view_dir", viewDir.x(), viewDir.y(), viewDir.z());
GLint viewportCoords[4];
glGetIntegerv(GL_VIEWPORT, viewportCoords);
shader->setUniformValue("viewport_origin", (float)viewportCoords[0], (float)viewportCoords[1]);
shader->setUniformValue("inverse_viewport_size", 2.0f / (float)viewportCoords[2], 2.0f / (float)viewportCoords[3]);
GLint pickingBaseID;
if(renderer->isPicking()) {
pickingBaseID = renderer->registerSubObjectIDs(elementCount());
renderer->activateVertexIDs(shader, _chunkSize * _verticesPerElement, true);
OVITO_CHECK_OPENGL(shader->setUniformValue("verticesPerElement", (GLint)_verticesPerElement));
}
for(int chunkIndex = 0; chunkIndex < _verticesWithElementInfo.size(); chunkIndex++, pickingBaseID += _chunkSize) {
int chunkStart = chunkIndex * _chunkSize;
int chunkSize = std::min(_elementCount - chunkStart, _chunkSize);
if(renderer->isPicking())
shader->setUniformValue("pickingBaseID", pickingBaseID);
_verticesWithElementInfo[chunkIndex].bindPositions(renderer, shader, offsetof(VertexWithElementInfo, pos));
_verticesWithElementInfo[chunkIndex].bind(renderer, shader, "cylinder_base", GL_FLOAT, offsetof(VertexWithElementInfo, base), 3, sizeof(VertexWithElementInfo));
_verticesWithElementInfo[chunkIndex].bind(renderer, shader, "cylinder_axis", GL_FLOAT, offsetof(VertexWithElementInfo, dir), 3, sizeof(VertexWithElementInfo));
_verticesWithElementInfo[chunkIndex].bind(renderer, shader, "cylinder_radius", GL_FLOAT, offsetof(VertexWithElementInfo, radius), 1, sizeof(VertexWithElementInfo));
if(!renderer->isPicking())
_verticesWithElementInfo[chunkIndex].bindColors(renderer, shader, 4, offsetof(VertexWithElementInfo, color));
if(_usingGeometryShader && (shadingMode() == FlatShading || renderingQuality() == HighQuality)) {
OVITO_CHECK_OPENGL(glDrawArrays(GL_POINTS, 0, chunkSize));
}
else {
int stripPrimitivesPerElement = _stripPrimitiveVertexCounts.size() / _chunkSize;
OVITO_CHECK_OPENGL(renderer->glMultiDrawArrays(GL_TRIANGLE_STRIP, _stripPrimitiveVertexStarts.data(), _stripPrimitiveVertexCounts.data(), stripPrimitivesPerElement * chunkSize));
int fanPrimitivesPerElement = _fanPrimitiveVertexCounts.size() / _chunkSize;
OVITO_CHECK_OPENGL(renderer->glMultiDrawArrays(GL_TRIANGLE_FAN, _fanPrimitiveVertexStarts.data(), _fanPrimitiveVertexCounts.data(), fanPrimitivesPerElement * chunkSize));
}
_verticesWithElementInfo[chunkIndex].detachPositions(renderer, shader);
_verticesWithElementInfo[chunkIndex].detach(renderer, shader, "cylinder_base");
_verticesWithElementInfo[chunkIndex].detach(renderer, shader, "cylinder_axis");
_verticesWithElementInfo[chunkIndex].detach(renderer, shader, "cylinder_radius");
if(!renderer->isPicking())
_verticesWithElementInfo[chunkIndex].detachColors(renderer, shader);
}
shader->enableAttributeArray("cylinder_base");
shader->enableAttributeArray("cylinder_axis");
shader->enableAttributeArray("cylinder_radius");
if(renderer->isPicking())
renderer->deactivateVertexIDs(shader, true);
shader->release();
}
bool Painter::initialize()
{
initializeOpenGLFunctions();
// Note: As always, feel free to change/modify parameters .. as long as its possible to
// see the terrain and navigation basically works, everything is ok.
glClearColor(1.f, 1.f, 1.f, 0.f);
m_quad = new ScreenAlignedQuad(*this);
m_light = QVector3D(2.f, 3.f, 2.f);
QOpenGLShaderProgram * program;
// setup default assimp scene shader (rendering the meshes...)
// ToDo: If you render your own scene (e.g., a terrain, keep in mind
// to extend your shaders for supporting shadowmaps as well as in assimp shaders...
program = createBasicShaderProgram("data/assimp.vert", "data/assimp.frag");
m_programs[PaintMode1] = program;
program->bindAttributeLocation("a_vertex", 0);
program->bindAttributeLocation("a_normal", 1);
program->bindAttributeLocation("a_texc", 2);
program->link();
// load labeling shaders and resources
m_programs[LabelAlphaMappingProgram] = createBasicShaderProgram("data/label.vert", "data/labelAM.frag");
m_programs[LabelDistanceMapProgram] = createBasicShaderProgram("data/label.vert", "data/labelDM.frag");
m_hpicgsLabelAM = FileAssociatedTexture::getOrCreate2D("data/hpicgs_label.png", *this);
m_portccLabelAM = FileAssociatedTexture::getOrCreate2D("data/companion_cube_label.png", *this);
// load and position 3d models in the scene
// Note: feel free to modify / add / remove here... there should be at least
// a few scene objects visible ;)
m_hpicgs = new AssimpScene(*this, "data/hpicgs.obj", true);
m_hpicgs->transform().scale(0.7f, 0.7f, 0.7f);
m_hpicgs->transform().translate(-0.9f, 0.8f, -0.3f);
m_hpicgs->transform().rotate( 56.0f, 0.f, 1.0f, 0.f);
m_hpicgs->transform().rotate(0.0f, 1.f, 0.0f, 0.f);
m_plane = new AssimpScene(*this, "data/plane.obj", false);
m_plane->transform().translate(0.f, -0.1f, 0.f);
m_portcc = new AssimpScene(*this, "data/companion_cube.obj", true);
m_portcc->transform().scale(0.5f, 0.5f, 0.5f);
m_portcc->transform().translate(1.1f, 0.73f, 1.2f);
m_portcc->transform().rotate(8.0f, 0.f, 1.0f, 0.f);
// initialize label positions
// Task_3_1 - ToDo Begin
// Modify the transformation matrix T to position, scale, and orient
// the labels to appropriate places, based on the initial view! No
// interaction should be required to be able to see both labels.
m_hpicgsLabel = new ScreenAlignedQuad(*this, 0);
QMatrix4x4 T;
T.translate(0.5, 0.5, -1.0);
T.scale(1.0, 0.3);
// ToDo: use T.translate/scale/rotate ...
m_transforms << T;
m_portccLabel = new ScreenAlignedQuad(*this, 0);
T.translate(-1.5, 0.0, 2.0);
// ToDo: use T.translate/scale/rotate ...
m_transforms << T;
// Task_3_1 - ToDo End
// initialize shader program attribute input
program = m_programs[LabelAlphaMappingProgram];
program->bind();
program->bindAttributeLocation("a_vertex", 0);
program->release();
program = m_programs[LabelDistanceMapProgram];
program->bind();
program->bindAttributeLocation("a_vertex", 0);
program->release();
// create distance transforms of label images
glGenTextures(1, &m_hpicgsLabelDM);
glBindTexture(GL_TEXTURE_2D, m_hpicgsLabelDM);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
{
QImage image("data/hpicgs_label_bitmask.png");
// ToDo: pre resize?
DistanceTransform DT(image, 512, 128, 0.0625f);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, 512, 128, 0, GL_RED, GL_FLOAT, DT.data());
}
glGenerateMipmap(GL_TEXTURE_2D);
glGenTextures(1, &m_portccLabelDM);
glBindTexture(GL_TEXTURE_2D, m_portccLabelDM);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
{
QImage image("data/companion_cube_label_bitmask.png");
// ToDo: pre resize?
// image = image.scaled(? , ? , Qt::FastTransformation);
DistanceTransform DT(image, 512, 128, 0.125f);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, 512, 128, 0, GL_RED, GL_FLOAT, DT.data());
}
glGenerateMipmap(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
// create fbo
m_programs[ShadowMapProgram] = createBasicShaderProgram("data/shadowmap.vert", "data/shadowmap.frag");
m_programs[ShadowMapDumpProgram] = createBasicShaderProgram("data/dump.vert", "data/dump.frag");
glGenTextures(1, &m_depthTex);
glBindTexture(GL_TEXTURE_2D, m_depthTex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32, ShadowMapSize, ShadowMapSize, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
float color[] = { 1.0f, 1.0f, 1.0f, 1.0f };
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, color);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &m_depthFbo);
glBindFramebuffer(GL_FRAMEBUFFER, m_depthFbo);
glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_depthTex, 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
qDebug() << "depth fbo invalid";
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return true;
}
void Painter::paint()
{
if (m_active && m_sceneRenderer) {
if (!m_initialized) {
initialize();
m_time->start();
}
m_counter++;
if (m_counter % 60 == 0) {
auto timeForPaint = (m_time->elapsed() - m_oldElapsed) / 1000;
qDebug() << "time for 60 frames " << QString::number(timeForPaint);
m_oldElapsed = m_time->elapsed();
}
float clearColor[4] = {0.9f, 1.f, 1.f, 1.f};
m_gl->glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_gl->glEnable(GL_CULL_FACE);
m_gl->glEnable(GL_DEPTH_TEST);
m_gl->glDepthFunc(GL_LEQUAL);
m_gl->glDepthMask(GL_TRUE);
// Render to texture
int viewportHeight = m_camera->viewport().height();
int viewportWidth = m_camera->viewport().width();
int previewViewportHeight = m_previewCamera->viewport().height();
int previewViewportWidth = m_previewCamera->viewport().width();
float previewSize = 1.f / (static_cast<float>(viewportWidth) / previewViewportWidth);
int glowSceneViewportHeight = viewportHeight / m_blurViewportRatioScene;
int glowSceneViewportWidth = viewportWidth / m_blurViewportRatioScene;
bool viewportChanged = false;
if (m_usedViewport->height() != viewportHeight
|| m_usedViewport->width() != viewportWidth) {
*m_usedViewport = m_camera->viewport();
viewportChanged = true;
}
// Render lightrays to glowSceneTexture for glow
m_gl->glBindFramebuffer(GL_FRAMEBUFFER, m_glowSceneFBO);
m_gl->glBindTexture(GL_TEXTURE_2D, m_glowSceneTexture);
if (viewportChanged) {
m_gl->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, glowSceneViewportWidth, glowSceneViewportHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
}
m_gl->glBindRenderbuffer(GL_RENDERBUFFER, m_glowSceneDepthRB);
if (viewportChanged) {
m_gl->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, glowSceneViewportWidth, glowSceneViewportHeight);
}
m_gl->glViewport(0, 0, glowSceneViewportWidth, glowSceneViewportHeight);
m_gl->glClearColor(1.0, 0.0, 0.0, 0.0);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderLightRays(*m_camera);
if (m_blurEffectScene) {
m_blurEffectScene->blur(QSize(glowSceneViewportWidth, glowSceneViewportHeight));
}
// Render preview lightrays to glowPreviewSceneTexture for glow
m_gl->glBindFramebuffer(GL_FRAMEBUFFER, m_glowPreviewSceneFBO);
m_gl->glBindTexture(GL_TEXTURE_2D, m_glowPreviewSceneTexture);
if (viewportChanged) {
m_gl->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, previewViewportWidth, previewViewportHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
}
m_gl->glBindRenderbuffer(GL_RENDERBUFFER, m_glowPreviewSceneDepthRB);
if (viewportChanged) {
m_gl->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, previewViewportWidth, previewViewportHeight);
}
m_gl->glViewport(0, 0, previewViewportWidth, previewViewportHeight);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderLightRays(*m_previewCamera);
if (m_blurEffectPreviewScene) {
m_blurEffectPreviewScene->blur(m_previewCamera->viewport());
}
// scene
m_gl->glBindFramebuffer(GL_FRAMEBUFFER, m_sceneFBO);
m_gl->glBindTexture(GL_TEXTURE_2D, m_sceneTexture);
if (viewportChanged) {
m_gl->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, viewportWidth, viewportHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
}
m_gl->glBindRenderbuffer(GL_RENDERBUFFER, m_sceneDepthRB);
if (viewportChanged) {
m_gl->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, viewportWidth, viewportHeight);
}
m_gl->glViewport(0, 0, viewportWidth, viewportHeight);
m_gl->glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderScene(*m_camera);
// preview scene
m_gl->glBindFramebuffer(GL_FRAMEBUFFER, m_previewSceneFBO);
m_gl->glBindTexture(GL_TEXTURE_2D, m_previewSceneTexture);
if (viewportChanged) {
m_gl->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, previewViewportWidth, previewViewportHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
}
m_gl->glBindRenderbuffer(GL_RENDERBUFFER, m_previewSceneDepthRB);
if (viewportChanged) {
m_gl->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, previewViewportWidth, previewViewportHeight);
}
m_gl->glViewport(0, 0, previewViewportWidth, previewViewportHeight);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
renderScene(*m_previewCamera);
// Render to the screen
m_gl->glBindFramebuffer(GL_FRAMEBUFFER, 0);
m_gl->glViewport(0, 0, viewportWidth, viewportHeight);
m_gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_gl->glActiveTexture(GL_TEXTURE0);
m_gl->glBindTexture(GL_TEXTURE_2D, m_sceneTexture);
m_gl->glActiveTexture(GL_TEXTURE1);
m_gl->glBindTexture(GL_TEXTURE_2D, m_previewSceneTexture);
m_gl->glActiveTexture(GL_TEXTURE2);
m_gl->glBindTexture(GL_TEXTURE_2D, m_glowSceneTexture);
m_gl->glActiveTexture(GL_TEXTURE3);
m_gl->glBindTexture(GL_TEXTURE_2D, m_glowPreviewSceneTexture);
QOpenGLShaderProgram *sceneProgram = (*m_shaderPrograms)[ShaderPrograms::SceneProgram];
sceneProgram->bind();
sceneProgram->setUniformValue("u_sceneTexture", 0);
sceneProgram->setUniformValue("u_previewSceneTexture", 1);
sceneProgram->setUniformValue("u_glowSceneTexture", 2);
sceneProgram->setUniformValue("u_glowPreviewSceneTexture", 3);
sceneProgram->setUniformValue("u_previewSize", previewSize);
m_quad->draw(*m_gl);
sceneProgram->release();
// Reset OpenGL state for qml
// According to https://qt.gitorious.org/qt/qtdeclarative/source/fa0eea53f73c9b03b259f075e4cd5b83bfefccd3:src/quick/items/qquickwindow.cpp
m_gl->glEnable(GL_TEXTURE_2D);
m_gl->glActiveTexture(GL_TEXTURE3);
m_gl->glBindTexture(GL_TEXTURE_2D, 0);
m_gl->glActiveTexture(GL_TEXTURE2);
m_gl->glBindTexture(GL_TEXTURE_2D, 0);
m_gl->glActiveTexture(GL_TEXTURE1);
m_gl->glBindTexture(GL_TEXTURE_2D, 0);
m_gl->glActiveTexture(GL_TEXTURE0);
m_gl->glBindTexture(GL_TEXTURE_2D, 0);
m_gl->glDisable(GL_TEXTURE_2D);
m_gl->glDisable(GL_DEPTH_TEST);
m_gl->glClearColor(0, 0, 0, 0);
m_gl->glDepthMask(GL_TRUE);
m_gl->glDepthFunc(GL_LESS);
QCoreApplication::postEvent(m_painterQML, new QEvent(m_painterQML->paintingDoneEventType()), Qt::HighEventPriority);
}
}
void VideoSurface::paintGL()
{
mutex.lock();
VideoFrame currFrame = frame;
frame.invalidate();
mutex.unlock();
if (currFrame.isValid() && res != currFrame.resolution)
{
res = currFrame.resolution;
// delete old texture
if (textureId != 0)
glDeleteTextures(1, &textureId);
// a texture used to render the pbo (has the match the pixelformat of the source)
glGenTextures(1,&textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexImage2D(GL_TEXTURE_2D,0, GL_RGB, res.width(), res.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
if (currFrame.isValid())
{
pboIndex = (pboIndex + 1) % 2;
int nextPboIndex = (pboIndex + 1) % 2;
if (pboAllocSize != currFrame.frameData.size())
{
qDebug() << "VideoSurface: Resize pbo " << currFrame.frameData.size() << "(" << currFrame.resolution << ")" << "bytes (before" << pboAllocSize << ")";
pbo[0]->bind();
pbo[0]->allocate(currFrame.frameData.size());
pbo[0]->release();
pbo[1]->bind();
pbo[1]->allocate(currFrame.frameData.size());
pbo[1]->release();
pboAllocSize = currFrame.frameData.size();
}
pbo[pboIndex]->bind();
glBindTexture(GL_TEXTURE_2D, textureId);
glTexSubImage2D(GL_TEXTURE_2D,0,0,0, res.width(), res.height(), GL_RGB, GL_UNSIGNED_BYTE, 0);
pbo[pboIndex]->unmap();
pbo[pboIndex]->release();
// transfer data
pbo[nextPboIndex]->bind();
void* ptr = pbo[nextPboIndex]->map(QOpenGLBuffer::WriteOnly);
if (ptr)
memcpy(ptr, currFrame.frameData.data(), currFrame.frameData.size());
pbo[nextPboIndex]->unmap();
pbo[nextPboIndex]->release();
}
// background
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
// keep aspect ratio
float aspectRatio = float(res.width()) / float(res.height());
if (width() < float(height()) * aspectRatio)
{
float h = float(width()) / aspectRatio;
glViewport(0, (height() - h)*0.5f, width(), h);
}
else
{
float w = float(height()) * float(aspectRatio);
glViewport((width() - w)*0.5f, 0, w, height());
}
QOpenGLShaderProgram* programm = nullptr;
switch (frame.format)
{
case VideoFrame::YUV:
programm = yuvProgramm;
break;
case VideoFrame::BGR:
programm = bgrProgramm;
break;
default:
break;
}
if (programm)
{
// render pbo
static float values[] = {
-1, -1,
1, -1,
-1, 1,
1, 1
};
programm->bind();
programm->setAttributeArray(0, GL_FLOAT, values, 2);
programm->enableAttributeArray(0);
}
glBindTexture(GL_TEXTURE_2D, textureId);
//draw fullscreen quad
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindTexture(GL_TEXTURE_2D, 0);
if (programm)
{
programm->disableAttributeArray(0);
programm->release();
}
}
