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 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;
}