Esempio n. 1
0
void Renderer::render()
{
    QMutexLocker locker(&m_windowLock);

    if (m_windows.isEmpty())
        return;

    HelloWindow *surface = m_windows.at(m_currentWindow);
    QColor color = surface->color();

    m_currentWindow = (m_currentWindow + 1) % m_windows.size();

    if (!m_context->makeCurrent(surface))
        return;

    QSize viewSize = surface->size();

    locker.unlock();

    if (!m_initialized) {
        initialize();
        m_initialized = true;
    }

    QOpenGLFunctions *f = m_context->functions();
    f->glViewport(0, 0, viewSize.width() * surface->devicePixelRatio(), viewSize.height() * surface->devicePixelRatio());
    f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    f->glClearColor(m_backgroundColor.redF(), m_backgroundColor.greenF(), m_backgroundColor.blueF(), m_backgroundColor.alphaF());
    f->glFrontFace(GL_CW);
    f->glCullFace(GL_FRONT);
    f->glEnable(GL_CULL_FACE);
    f->glEnable(GL_DEPTH_TEST);

    m_program->bind();
    m_vbo.bind();

    m_program->enableAttributeArray(vertexAttr);
    m_program->enableAttributeArray(normalAttr);
    m_program->setAttributeBuffer(vertexAttr, GL_FLOAT, 0, 3);
    const int verticesSize = vertices.count() * 3 * sizeof(GLfloat);
    m_program->setAttributeBuffer(normalAttr, GL_FLOAT, verticesSize, 3);

    QMatrix4x4 modelview;
    modelview.rotate(m_fAngle, 0.0f, 1.0f, 0.0f);
    modelview.rotate(m_fAngle, 1.0f, 0.0f, 0.0f);
    modelview.rotate(m_fAngle, 0.0f, 0.0f, 1.0f);
    modelview.translate(0.0f, -0.2f, 0.0f);

    m_program->setUniformValue(matrixUniform, modelview);
    m_program->setUniformValue(colorUniform, color);

    m_context->functions()->glDrawArrays(GL_TRIANGLES, 0, vertices.size());

    m_context->swapBuffers(surface);

    m_fAngle += 1.0f;

    QTimer::singleShot(0, this, SLOT(render()));
}
Esempio n. 2
0
void QtRenderer::initialize()
{
    QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, this);
    vshader->compileSourceCode(
        "attribute highp vec4 vertex;"
        "attribute mediump vec3 normal;"
        "uniform mediump mat4 matrix;"
        "uniform lowp vec4 sourceColor;"
        "varying mediump vec4 color;"
        "void main(void)"
        "{"
        "    vec3 toLight = normalize(vec3(0.0, 0.3, 1.0));"
        "    float angle = max(dot(normal, toLight), 0.0);"
        "    vec3 col = sourceColor.rgb;"
        "    color = vec4(col * 0.2 + col * 0.8 * angle, 1.0);"
        "    color = clamp(color, 0.0, 1.0);"
        "    gl_Position = matrix * vertex;"
        "}");

    QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, this);
    fshader->compileSourceCode(
        "varying mediump vec4 color;"
        "void main(void)"
        "{"
        "    gl_FragColor = color;"
        "}");

    m_program = new QOpenGLShaderProgram(this);
    m_program->addShader(vshader);
    m_program->addShader(fshader);
    m_program->link();
    m_program->bind();

    vertexAttr = m_program->attributeLocation("vertex");
    normalAttr = m_program->attributeLocation("normal");
    matrixUniform = m_program->uniformLocation("matrix");
    colorUniform = m_program->uniformLocation("sourceColor");

    m_fAngle = 0;
    createGeometry();

    m_vbo.create();
    m_vbo.bind();
    const int verticesSize = vertices.count() * 3 * sizeof(GLfloat);
    m_vbo.allocate(verticesSize * 2);
    m_vbo.write(0, vertices.constData(), verticesSize);
    m_vbo.write(verticesSize, normals.constData(), verticesSize);

    QOpenGLFunctions *f = m_context->functions();
    f->glClearColor(0.1f, 0.1f, 0.2f, 1.0f);
    f->glFrontFace(GL_CW);
    f->glCullFace(GL_FRONT);
    f->glEnable(GL_CULL_FACE);
    f->glEnable(GL_DEPTH_TEST);

    m_program->enableAttributeArray(vertexAttr);
    m_program->enableAttributeArray(normalAttr);
    m_program->setAttributeBuffer(vertexAttr, GL_FLOAT, 0, 3);
    m_program->setAttributeBuffer(normalAttr, GL_FLOAT, verticesSize, 3);
}
Esempio n. 3
0
void Renderer::render()
{
    QMutexLocker locker(&m_windowLock);

    if (m_windows.isEmpty())
        return;

    HelloWindow *surface = m_windows.at(m_currentWindow);
    QColor color = surface->color();

    m_currentWindow = (m_currentWindow + 1) % m_windows.size();

    if (!m_context->makeCurrent(surface))
        return;

    QSize viewSize = surface->size();

    locker.unlock();

    if (!m_initialized) {
        initialize();
        m_initialized = true;
    }

    QOpenGLFunctions *f = m_context->functions();
    f->glViewport(0, 0, viewSize.width() * surface->devicePixelRatio(), viewSize.height() * surface->devicePixelRatio());

    f->glClearColor(0.1f, 0.1f, 0.2f, 1.0f);
    f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    f->glFrontFace(GL_CW);
    f->glCullFace(GL_FRONT);
    f->glEnable(GL_CULL_FACE);
    f->glEnable(GL_DEPTH_TEST);

    QMatrix4x4 modelview;
    modelview.rotate(m_fAngle, 0.0f, 1.0f, 0.0f);
    modelview.rotate(m_fAngle, 1.0f, 0.0f, 0.0f);
    modelview.rotate(m_fAngle, 0.0f, 0.0f, 1.0f);
    modelview.translate(0.0f, -0.2f, 0.0f);

    m_program->bind();
    m_program->setUniformValue(matrixUniform, modelview);
    m_program->setUniformValue(colorUniform, color);
    paintQtLogo();
    m_program->release();

    f->glDisable(GL_DEPTH_TEST);
    f->glDisable(GL_CULL_FACE);

    m_context->swapBuffers(surface);

    m_fAngle += 1.0f;

    QTimer::singleShot(0, this, SLOT(render()));
}
Esempio n. 4
0
void CompasWidget::paintGL(){
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_CULL_FACE);
	m_world.setToIdentity();
	m_world.rotate(180.0f - (m_xRot / 16.0f), 1, 0, 0);
	m_world.rotate(m_yRot / 16.0f, 0, 1, 0);
	m_world.rotate(m_zRot / 16.0f, 0, 0, 1);

	/*


	QOpenGLVertexArrayObject::Binder vaoBinder(&m_vao);
	m_program->bind();
	m_program->setUniformValue(m_projMatrixLoc, m_proj);
	m_program->setUniformValue(m_mvMatrixLoc, m_camera * m_world);
	QMatrix3x3 normalMatrix = m_world.normalMatrix();
	m_program->setUniformValue(m_normalMatrixLoc, normalMatrix);

	glDrawArrays(GL_TRIANGLES, 0, m_logo.vertexCount());

	m_program->release();
*/

	QOpenGLFunctions *f = context()->functions();
	const bool newFrameReady=true;
	if (newFrameReady) {//new frame ready
		f->glFrontFace(GL_CW); // because our cube's vertex data is such

		f->glBindTexture(GL_TEXTURE_2D, m_fbo2->texture());

		m_program2->bind();
		QOpenGLVertexArrayObject::Binder vaoBinder(m_vao2);
		// If VAOs are not supported, set the vertex attributes every time.
		if (!m_vao2->isCreated()){
			setupVertexAttribs2();
		}

		static GLfloat angle = 0;
		QMatrix4x4 m;
		m.translate(0, 0, -20);
		m.rotate(90, 0, 0, 1);
		m.rotate(angle, 0.5, 1, 0);
		angle += 0.5f;

		m_program2->setUniformValue(m_matrixLoc, m_proj * m);

		// Draw the cube.
		f->glDrawArrays(GL_TRIANGLES, 0, 36);

		m_program2->release();

	}


}