void ImageTest::release() {
unsigned char data[] = {'c', 'a', 'f', 'e'};
Image2D a(ColorFormat::Red, ColorType::UnsignedByte, {1, 4}, data);
const unsigned char* const pointer = a.release();
CORRADE_COMPARE(pointer, data);
CORRADE_COMPARE(a.data(), nullptr);
CORRADE_COMPARE(a.size(), Vector2i());
}
void AbstractFramebuffer::read(const Range2Di& rectangle, Image2D& image) {
bindInternal(FramebufferTarget::Read);
/* Reallocate only if needed */
const std::size_t dataSize = Implementation::imageDataSizeFor(image, rectangle.size());
Containers::Array<char> data{image.release()};
if(data.size() < dataSize)
data = Containers::Array<char>{dataSize};
#ifndef MAGNUM_TARGET_GLES2
Buffer::unbindInternal(Buffer::TargetHint::PixelPack);
#endif
image.storage().applyPack();
(Context::current().state().framebuffer->readImplementation)(rectangle, image.format(), image.type(), data.size(), data
#ifdef MAGNUM_TARGET_GLES2
+ Implementation::pixelStorageSkipOffsetFor(image, rectangle.size())
#endif
);
image.setData(image.storage(), image.format(), image.type(), rectangle.size(), std::move(data));
}
