void Ut_MGLE2Renderer::testDrawing()
{
#ifdef M_USE_OPENGL
QGLWidget glw;
glw.resize(67,67);
glw.makeCurrent();
MGLES2Renderer::activate(&glw);
MGLES2Renderer* r = MGLES2Renderer::instance();
QPixmap pm(32,32);
pm.fill(Qt::red);
//draw with default shader
r->setViewportSize(glw.size());
r->begin(NULL);
r->bindTexture(pm);
r->draw(QRect(1,1,32,32));
r->draw(34,1);
r->draw(1,34,32,32);
r->setInvertTexture(true);
r->draw(QRect(34,34,32,32), QRect(4,4,24,24));
r->end();
//draw with custom shader
r->begin(NULL, r->getShaderProgram(qApp->applicationDirPath() + "/shader1.frag", qApp->applicationDirPath() + "/shader1.vert"));
r->bindTexture(pm);
r->draw(17,17,33,33);
r->end();
//compare resulted image with reference image
QImage image1 = glw.grabFrameBuffer();
//image1.save("glw1.png", "PNG");
QImage image2(qApp->applicationDirPath() + "/glw1.png", "PNG");
QVERIFY(image1 == image2);
//draw patches
glw.resize(64,64);
QList<QRect> targets;
targets.append(QRect(0,0,32,32));
targets.append(QRect(32,0,32,32));
targets.append(QRect(0,32,32,32));
targets.append(QRect(32,32,32,32));
QList<QRect> sources;
sources.append(QRect(17,17,16,16));
sources.append(QRect(32,17,16,16));
sources.append(QRect(17,32,16,16));
sources.append(QRect(32,32,16,16));
pm.convertFromImage(image2);
r->begin(NULL);
r->bindTexture(pm);
r->draw(targets, sources);
r->end();
//compare resulted image with reference image
image1 = glw.grabFrameBuffer();
//image1.save("glw2.png", "PNG");
image2.load(qApp->applicationDirPath() + "/glw2.png", "PNG");
QVERIFY(image1 == image2);
#endif
}
