C++ QOpenGLFramebufferObjectFormat::setAttachment方法代码示例

void TApplication::initializeGL() {

    // Init shaders
    if (!Shader.addShaderFromSourceFile(QGLShader::Vertex, "vert.glsl")) {
        qFatal("failed to load shader vert.glsl");
    }
    if (!Shader.addShaderFromSourceFile(QGLShader::Fragment, "frag.glsl")) {
        qFatal("failed to load shader frag.glsl");
    }
    if (!Shader.link()) {
        qFatal("failed to link shader planet");
    }
    if (!Shader.bind()) {
        qFatal("failed to bind shader");
    }

    // Init framebuffers
    QOpenGLFramebufferObjectFormat format;
    format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
    format.setSamples(8);
    Fbo.reset(new QOpenGLFramebufferObject(WINDOW_WIDTH, WINDOW_HEIGHT, format));

    QOpenGLFramebufferObjectFormat format1;
    format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
    Fbo1.reset(new QOpenGLFramebufferObject(WINDOW_WIDTH, WINDOW_HEIGHT, format1));


    // Load model and textures

    Obj = LoadJsonModel("model.json");
    ObjectSize = Obj.size();

    VertexBuff.reset(new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer));
    VertexBuff->create();
    VertexBuff->bind();
    VertexBuff->setUsagePattern(QOpenGLBuffer::StaticDraw);
    VertexBuff->allocate(Obj.data(), Obj.size() * sizeof(TVertex));
    VertexBuff->release();

    Texture.reset(new QOpenGLTexture(QImage("diffuse.jpg")));
    Texture->bind();
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    Texture->release();

    NormalMap.reset(new QOpenGLTexture(QImage("normal.jpg")));
    NormalMap->bind();
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    NormalMap->release();

    // Initial angles
    AngleX = 0;
    AngleY = 0;
    AngleZ = 0;

    Paused = false;
}

 QOpenGLFramebufferObject *createFramebufferObject(const QSize &size)
 {
     QOpenGLFramebufferObjectFormat format;
     format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
     format.setSamples(4);
     return new QOpenGLFramebufferObject(size, format);
 }

void tst_QOpenGL::fboSimpleRendering()
{
    QFETCH(int, surfaceClass);
    QScopedPointer<QSurface> surface(createSurface(surfaceClass));

    QOpenGLContext ctx;
    ctx.create();

    ctx.makeCurrent(surface.data());

    if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
        QSKIP("QOpenGLFramebufferObject not supported on this platform");

    // No multisample with combined depth/stencil attachment:
    QOpenGLFramebufferObjectFormat fboFormat;
    fboFormat.setAttachment(QOpenGLFramebufferObject::NoAttachment);

    QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(200, 100, fboFormat);

    fbo->bind();

    glClearColor(1.0, 0.0, 0.0, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
    glFinish();

    QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
    QImage reference(fb.size(), QImage::Format_RGB32);
    reference.fill(0xffff0000);

    QFUZZY_COMPARE_IMAGES(fb, reference);

    delete fbo;
}

void RenderSurface::render(QPainter *painter)
{
    Q_UNUSED(painter);

    QOpenGLFramebufferObjectFormat fboFormat;
    fboFormat.setSamples(1);
    fboFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);

    const QRect drawRect(0, 0, m_outWidth, m_outHeight);
    const QSize drawRectSize = drawRect.size();
    QOpenGLFramebufferObject fbo(drawRectSize, fboFormat);
    fbo.bind();

    glViewport(0, 0, m_outWidth, m_outHeight);

    glClear(GL_COLOR_BUFFER_BIT);
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

    glEnable(GL_BLEND); 
    glBlendFuncSeparate(GL_ONE, GL_ZERO, GL_ZERO, GL_ONE);

    m_program->bind();

    int texCount = 0;
    for (size_t i = 0; i < sp.size(); ++i) {
      if (sp[i].bind == ShaderParameter::BindTextureSampler) {
        textures[sp[i].name].obj->bind(texCount);
        m_program->setUniformValue(sp[i].name.c_str(), texCount);
        texCount++;
      } else if (sp[i].bind == ShaderParameter::BindTextureResolution) {
        const QImage& image = textures[sp[i].texture].image;
        m_program->setUniformValue(sp[i].name.c_str(), QVector2D(image.width(),image.height()));
      } else if (sp[i].bind == ShaderParameter::BindGlobalTime) {
        m_program->setUniformValue(sp[i].name.c_str(), m_globalTime);
      } else if (sp[i].bind == ShaderParameter::BindOutputResolution) {
        m_program->setUniformValue(sp[i].name.c_str(), QVector2D(m_outWidth,m_outHeight));
      }
    }

    GLfloat vertices[] = {
      -1.0f,  -1.0f, 0.0f,
      1.0f, -1.0f, 0.0f,
      -1.0f, 1.0f, 0.0f,
      1.0f, 1.0f, 0.0f
    };

    glVertexAttribPointer(m_posAttr, 3, GL_FLOAT, GL_FALSE, 0, vertices);

    glEnableVertexAttribArray(0);

    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);

    glDisableVertexAttribArray(0);

    m_program->release();

    imageFrame = fbo.toImage();
}

QOpenGLFramebufferObject* QQuickMapboxGLRenderer::createFramebufferObject(const QSize &size)
{
    m_map->resize(size);

    QOpenGLFramebufferObjectFormat format;
    format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);

    return new QOpenGLFramebufferObject(size, format);
}

QOpenGLFramebufferObject* COglRenderer::createFramebufferObject(const QSize &size)
{
    // create opengl FBO
    QOpenGLFramebufferObjectFormat format;
    format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
    format.setSamples(4);
    m_oglFBO = new QOpenGLFramebufferObject(size, format);

    // return opengl FBO
    return m_oglFBO;
}

bool QGLPixelBuffer::makeCurrent()
{
    Q_D(QGLPixelBuffer);
    if (d->invalid)
        return false;
    d->qctx->makeCurrent();
    if (!d->fbo) {
        QOpenGLFramebufferObjectFormat format;
        if (d->req_format.stencil())
            format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
        else if (d->req_format.depth())
            format.setAttachment(QOpenGLFramebufferObject::Depth);
        if (d->req_format.sampleBuffers())
            format.setSamples(d->req_format.samples());
        d->fbo = new QOpenGLFramebufferObject(d->req_size, format);
        d->fbo->bind();
        d->glDevice.setFbo(d->fbo->handle());
        QOpenGLContext::currentContext()->functions()->glViewport(0, 0, d->req_size.width(), d->req_size.height());
    }
    return true;
}

std::unique_ptr<QOpenGLFramebufferObject>
_createMultisampledFBO( const QSize& size )
{
    QOpenGLFramebufferObjectFormat format;
    format.setAttachment( QOpenGLFramebufferObject::CombinedDepthStencil );
    format.setSamples( MULTI_SAMPLE_ANTI_ALIASING_SAMPLES );

    auto fbo = make_unique<QOpenGLFramebufferObject>( size, format );
    fbo->bind();
    auto gl = QOpenGLContext::currentContext()->functions();
    gl->glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
    gl->glClear( GL_COLOR_BUFFER_BIT );
    fbo->release();

    return fbo;
}

// NOTE: This tests that CombinedDepthStencil attachment works by assuming the
//       GL2 engine is being used and is implemented the same way as it was when
//       this autotest was written. If this is not the case, there may be some
//       false-positives: I.e. The test passes when either the depth or stencil
//       buffer is actually missing. But that's probably ok anyway.
void tst_QOpenGL::fboRendering()
{
#if defined(Q_OS_LINUX) && defined(Q_CC_GNU) && !defined(__x86_64__)
    QSKIP("QTBUG-22617");
#endif

    QFETCH(int, surfaceClass);
    QScopedPointer<QSurface> surface(createSurface(surfaceClass));

    QOpenGLContext ctx;
    QVERIFY(ctx.create());

    QVERIFY(ctx.makeCurrent(surface.data()));

    if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
        QSKIP("QOpenGLFramebufferObject not supported on this platform");

    // No multisample with combined depth/stencil attachment:
    QOpenGLFramebufferObjectFormat fboFormat;
    fboFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);

    // Uncomplicate things by using NPOT:
    const QSize size(256, 128);
    QOpenGLFramebufferObject fbo(size, fboFormat);

    if (fbo.attachment() != QOpenGLFramebufferObject::CombinedDepthStencil)
        QSKIP("FBOs missing combined depth~stencil support");

    QVERIFY(fbo.bind());

    QPainter fboPainter;
    QOpenGLPaintDevice device(fbo.width(), fbo.height());
    bool painterBegun = fboPainter.begin(&device);
    QVERIFY(painterBegun);

    qt_opengl_draw_test_pattern(&fboPainter, fbo.width(), fbo.height());

    fboPainter.end();

    const QImage fb = fbo.toImage().convertToFormat(QImage::Format_RGB32);
    QCOMPARE(fb.size(), size);

    qt_opengl_check_test_pattern(fb);
}

void QQuickContext2DFBOTile::setRect(const QRect& r)
{
    if (m_rect == r)
        return;
    m_rect = r;
    m_dirty = true;
    if (!m_fbo || m_fbo->size() != r.size()) {
        QOpenGLFramebufferObjectFormat format;
        format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
        format.setInternalTextureFormat(GL_RGBA);
        format.setMipmap(false);

        if (m_painter.isActive())
            m_painter.end();

        delete m_fbo;
        m_fbo = new QOpenGLFramebufferObject(r.size(), format);
    }
}

void tst_QOpenGL::fboTextureOwnership()
{
    QFETCH(int, surfaceClass);
    QScopedPointer<QSurface> surface(createSurface(surfaceClass));

    QOpenGLContext ctx;
    QVERIFY(ctx.create());

    ctx.makeCurrent(surface.data());

    if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
        QSKIP("QOpenGLFramebufferObject not supported on this platform");

    QOpenGLFramebufferObjectFormat fboFormat;
    fboFormat.setAttachment(QOpenGLFramebufferObject::NoAttachment);

    QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(200, 100, fboFormat);
    QVERIFY(fbo->texture() != 0);
    fbo->bind();

    // pull out the texture
    GLuint texture = fbo->takeTexture();
    QVERIFY(texture != 0);
    QVERIFY(fbo->texture() == 0);

    // verify that the next bind() creates a new texture
    fbo->bind();
    QVERIFY(fbo->texture() != 0 && fbo->texture() != texture);

    glClearColor(1.0, 0.0, 0.0, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
    glFinish();

    QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
    QImage reference(fb.size(), QImage::Format_RGB32);
    reference.fill(0xffff0000);

    QFUZZY_COMPARE_IMAGES(fb, reference);

    glDeleteTextures(1, &texture);
    delete fbo;
}

static PyObject *meth_QOpenGLFramebufferObjectFormat_setAttachment(PyObject *sipSelf, PyObject *sipArgs)
{
    PyObject *sipParseErr = NULL;

    {
        QOpenGLFramebufferObject::Attachment a0;
        QOpenGLFramebufferObjectFormat *sipCpp;

        if (sipParseArgs(&sipParseErr, sipArgs, "BE", &sipSelf, sipType_QOpenGLFramebufferObjectFormat, &sipCpp, sipType_QOpenGLFramebufferObject_Attachment, &a0))
        {
            sipCpp->setAttachment(a0);

            Py_INCREF(Py_None);
            return Py_None;
        }
    }

    /* Raise an exception if the arguments couldn't be parsed. */
    sipNoMethod(sipParseErr, sipName_QOpenGLFramebufferObjectFormat, sipName_setAttachment, doc_QOpenGLFramebufferObjectFormat_setAttachment);

    return NULL;
}

void GLImageProcessor::initialize()
{
	initializeOpenGLFunctions();

	texture.reset(new QOpenGLTexture(image.mirrored()));
	texture->setWrapMode(QOpenGLTexture::WrapMode::ClampToEdge);
	texture->setMinificationFilter(QOpenGLTexture::LinearMipMapLinear);
	texture->setMagnificationFilter(QOpenGLTexture::Linear);

	program.reset(buildProgram());
	program->release();

	plotProgram.reset(buildPassthorughProgram());
	plotProgram->release();

	vao.create();
	vao.bind();
	vbo.reset(buildQuadTextured());
	vao.release();

	QOpenGLFramebufferObjectFormat format;
	format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
	renderFbo.reset(new QOpenGLFramebufferObject(image.size(), format));
}

int indexAt( /*GLuint *buffer,*/ NifModel * model, Scene * scene, QList<DrawFunc> drawFunc, int cycle, const QPoint & pos, int & furn )
{
	Q_UNUSED( model ); Q_UNUSED( cycle );
	// Color Key O(1) selection
	//	Open GL 3.0 says glRenderMode is deprecated
	//	ATI OpenGL API implementation of GL_SELECT corrupts NifSkope memory
	//
	// Create FBO for sharp edges and no shading.
	// Texturing, blending, dithering, lighting and smooth shading should be disabled.
	// The FBO can be used for the drawing operations to keep the drawing operations invisible to the user.

	GLint viewport[4];
	glGetIntegerv( GL_VIEWPORT, viewport );

	// Create new FBO with multisampling disabled
	QOpenGLFramebufferObjectFormat fboFmt;
	fboFmt.setTextureTarget( GL_TEXTURE_2D );
	fboFmt.setInternalTextureFormat( GL_RGB32F_ARB );
	fboFmt.setAttachment( QOpenGLFramebufferObject::Attachment::CombinedDepthStencil );

	QOpenGLFramebufferObject fbo( viewport[2], viewport[3], fboFmt );
	fbo.bind();

	glEnable( GL_LIGHTING );
	glDisable( GL_MULTISAMPLE );
	glDisable( GL_MULTISAMPLE_ARB );
	glDisable( GL_LINE_SMOOTH );
	glDisable( GL_POINT_SMOOTH );
	glDisable( GL_POLYGON_SMOOTH );
	glDisable( GL_TEXTURE_1D );
	glDisable( GL_TEXTURE_2D );
	glDisable( GL_TEXTURE_3D );
	glDisable( GL_BLEND );
	glDisable( GL_DITHER );
	glDisable( GL_FOG );
	glDisable( GL_LIGHTING );
	glShadeModel( GL_FLAT );
	glEnable( GL_DEPTH_TEST );
	glDepthFunc( GL_LEQUAL );
	glClearColor( 0, 0, 0, 1 );
	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

	// Rasterize the scene
	Node::SELECTING = 1;
	for ( DrawFunc df : drawFunc ) {
		(scene->*df)();
	}
	Node::SELECTING = 0;

	fbo.release();

	QImage img( fbo.toImage() );
	QColor pixel = img.pixel( pos );

#ifndef QT_NO_DEBUG
	img.save( "fbo.png" );
#endif

	// Encode RGB to Int
	int a = 0;
	a |= pixel.red()   << 0;
	a |= pixel.green() << 8;
	a |= pixel.blue()  << 16;

	// Decode:
	// R = (id & 0x000000FF) >> 0
	// G = (id & 0x0000FF00) >> 8
	// B = (id & 0x00FF0000) >> 16

	int choose = COLORKEY2ID( a );

	// Pick BSFurnitureMarker
	if ( choose > 0 ) {
		auto furnBlock = model->getBlock( model->index( 3, 0, model->getBlock( choose & 0x0ffff ) ), "BSFurnitureMarker" );

		if ( furnBlock.isValid() ) {
			furn = choose >> 16;
			choose &= 0x0ffff;
		}

 QOpenGLFramebufferObject *createFramebufferObject(const QSize &size) override {
     m_heightMapRenderer.setAspectRatio(size.width(), size.height());
     QOpenGLFramebufferObjectFormat format;
     format.setAttachment(QOpenGLFramebufferObject::Depth);
     return new QOpenGLFramebufferObject(size, format);
 }