当前位置: 首页>>代码示例>>C++>>正文

C++ QOpenGLShaderProgram::setAttributeBuffer方法代码示例

本文整理汇总了C++中QOpenGLShaderProgram::setAttributeBuffer方法的典型用法代码示例。如果您正苦于以下问题：C++ QOpenGLShaderProgram::setAttributeBuffer方法的具体用法？C++ QOpenGLShaderProgram::setAttributeBuffer怎么用？C++ QOpenGLShaderProgram::setAttributeBuffer使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QOpenGLShaderProgram的用法示例。


在下文中一共展示了QOpenGLShaderProgram::setAttributeBuffer方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: draw

void Refraction::draw()
{
    _arrayBuf.bind();

    QOpenGLShaderProgram *program = GL::refraction();
    program->bind();
    int vertexLocation = program->attributeLocation("a_position");
    program->enableAttributeArray(vertexLocation);
    program->setAttributeBuffer(vertexLocation, GL_FLOAT, 0, 3, sizeof(VertexData));
    int fragmentLocation = program->attributeLocation("a_texcoord");
    program->enableAttributeArray(fragmentLocation);
    program->setAttributeBuffer(fragmentLocation, GL_FLOAT, sizeof(QVector3D), 2, sizeof(VertexData));

    prepareMatrix();
    program->setUniformValue("mvp_matrix", GL::projection() * model);
    program->setUniformValue("refraction", 0);
    _texture->bind(0);



    program->setUniformValue("background", 1);
    GameObjects::background()->bind(1);
    program->setUniformValue("position", _position);
    program->setUniformValue("radius", _radius);

    glDrawElements(GL_QUADS, 4, GL_UNSIGNED_INT, 0);
}
开发者ID:ustinski，项目名称:game，代码行数:27，代码来源:refraction.cpp

示例2: getShaderProgram

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;
}
开发者ID:arielm，项目名称:cgal，代码行数:25，代码来源:Scene_polylines_item.cpp

示例3: 

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;
}
开发者ID:FEniCS，项目名称:mshr，代码行数:28，代码来源:Scene_polylines_item.cpp

示例4: Exception

/******************************************************************************
* 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);
}
开发者ID:taohonker，项目名称:Ovito，代码行数:56，代码来源:ViewportSceneRenderer.cpp

示例5: draw

void csSurface::draw(QOpenGLShaderProgram& program)
{
  if( _initRequired ) {
    initialize();
  }

  if( _meshInfo.isEmpty() ) {
    return;
  }

  glDisable(GL_CULL_FACE);

  program.setUniformValue("cs_Model", _model);
  program.setUniformValue("cs_zMin", _meshInfo.zMin());
  program.setUniformValue("cs_zInterval", _meshInfo.zInterval());
  program.setUniformValue("cs_ColorMap", TMU_COLORMAP);

  _surface->bind();
  const int vertexLoc = program.attributeLocation("cs_Vertex");
  program.enableAttributeArray(vertexLoc);
  program.setAttributeBuffer(vertexLoc, GL_FLOAT, 0, 3);

  _colorTexture->bind(TMU_COLORMAP, QOpenGLTexture::ResetTextureUnit);

  _strip->bind();
  const int numStrips       =   _meshInfo.rowCount()   -1;
  const int numVertPerStrip = 2*_meshInfo.columnCount();
  for(int y = 0; y < numStrips; y++) {
    const GLuint  offset  = sizeof(GLuint)*y*numVertPerStrip;
    const GLvoid *indices = (GLvoid*)offset;
    glDrawElements(GL_TRIANGLE_STRIP, numVertPerStrip, GL_UNSIGNED_INT, indices);
  }
  _strip->release();

  _colorTexture->release();

  program.disableAttributeArray(vertexLoc);
  _surface->release();
}
开发者ID:CaSchmidt，项目名称:cslabs，代码行数:39，代码来源:csSurface.cpp

示例6: drawMesh

void csSurface::drawMesh(QOpenGLShaderProgram& program)
{
  if( _initRequired ) {
    initialize();
  }

  if( _meshInfo.isEmpty() ) {
    return;
  }

  program.setUniformValue("cs_DepthOffset", csCoordinateBox::DepthOffset);
  program.setUniformValue("cs_Model", _model);

  _surface->bind();
  const int vertexLoc = program.attributeLocation("cs_Vertex");
  program.enableAttributeArray(vertexLoc);
  program.setAttributeBuffer(vertexLoc, GL_FLOAT, 0, 3);

  const int colorLoc = program.attributeLocation("cs_Color");
  program.setAttributeValue(colorLoc, QColor(Qt::black));

  // Along x-Axis
  for(int y = 0; y < _meshInfo.rowCount(); y++) {
    glDrawArrays(GL_LINE_STRIP,
                 y*_meshInfo.columnCount(), _meshInfo.columnCount());
  }

  // Along y-Axis
  _meshY->bind();
  for(int x = 0; x < _meshInfo.columnCount(); x++) {
    const GLuint  offset  = sizeof(GLuint)*x*_meshInfo.rowCount();
    const GLvoid *indices = (GLvoid*)offset;
    glDrawElements(GL_LINE_STRIP, _meshInfo.rowCount(), GL_UNSIGNED_INT, indices);
  }
  _meshY->release();

  program.disableAttributeArray(vertexLoc);
  _surface->release();
}
开发者ID:CaSchmidt，项目名称:cslabs，代码行数:39，代码来源:csSurface.cpp

示例7: showDistance

void Viewer_impl::showDistance(QPoint pixel)
{
    static bool isAset = false;
    bool found;
    CGAL::qglviewer::Vec point;
    point = viewer->camera()->pointUnderPixel(pixel, found);
    if(!isAset && found)
    {
        //set APoint
        APoint = point;
        isAset = true;
        clearDistancedisplay();
    }
    else if (found)
    {
        //set BPoint
        BPoint = point;
        isAset = false;

        // fills the buffers
        std::vector<float> v;
        v.resize(6);
        v[0] = float(APoint.x); v[1] = float(APoint.y); v[2] = float(APoint.z);
        v[3] = float(BPoint.x); v[4] = float(BPoint.y); v[5] = float(BPoint.z);
       
        vao.bind();
        buffer.bind();
        buffer.allocate(v.data(),6*sizeof(float));
        rendering_program_dist.enableAttributeArray("vertex");
        rendering_program_dist.setAttributeBuffer("vertex",GL_FLOAT,0,3);
        buffer.release();
        vao.release();
        
        distance_is_displayed = true;
        double dist = std::sqrt((BPoint.x-APoint.x)*(BPoint.x-APoint.x) + (BPoint.y-APoint.y)*(BPoint.y-APoint.y) + (BPoint.z-APoint.z)*(BPoint.z-APoint.z));
        QFont font;
        font.setBold(true);
        TextItem *ACoord = new TextItem(float(APoint.x),
                                        float(APoint.y),
                                        float(APoint.z),
                                        QString("A(%1,%2,%3)").arg(APoint.x-viewer->offset().x).arg(APoint.y-viewer->offset().y).arg(APoint.z-viewer->offset().z), true, font, Qt::red, true);
        distance_text.append(ACoord);
        TextItem *BCoord = new TextItem(float(BPoint.x),
                                        float(BPoint.y),
                                        float(BPoint.z),
                                        QString("B(%1,%2,%3)").arg(BPoint.x-viewer->offset().x).arg(BPoint.y-viewer->offset().y).arg(BPoint.z-viewer->offset().z), true, font, Qt::red, true);
        distance_text.append(BCoord);
        CGAL::qglviewer::Vec centerPoint = 0.5*(BPoint+APoint);
        TextItem *centerCoord = new TextItem(float(centerPoint.x),
                                             float(centerPoint.y),
                                             float(centerPoint.z),
                                             QString(" distance: %1").arg(dist), true, font, Qt::red, true);

        distance_text.append(centerCoord);
        Q_FOREACH(TextItem* ti, distance_text)
          textRenderer->addText(ti);
        Q_EMIT(viewer->sendMessage(QString("First point : A(%1,%2,%3), second point : B(%4,%5,%6), distance between them : %7")
                  .arg(APoint.x-viewer->offset().x)
                  .arg(APoint.y-viewer->offset().y)
                  .arg(APoint.z-viewer->offset().z)
                  .arg(BPoint.x-viewer->offset().x)
                  .arg(BPoint.y-viewer->offset().y)
                  .arg(BPoint.z-viewer->offset().z)
                  .arg(dist)));
    }

}
开发者ID:myluoxz，项目名称:cgal，代码行数:67，代码来源:Viewer.cpp


注：本文中的QOpenGLShaderProgram::setAttributeBuffer方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。