void AbstractFramebuffer::read(const Range2Di& rectangle, Image2D& image) {
bindInternal(FramebufferTarget::Read);
const std::size_t dataSize = image.dataSize(rectangle.size());
char* const data = new char[dataSize];
(Context::current()->state().framebuffer->readImplementation)(rectangle, image.format(), image.type(), dataSize, data);
image.setData(image.format(), image.type(), rectangle.size(), data);
}
void AbstractFramebuffer::read(const Range2Di& rectangle, BufferImage2D& image, BufferUsage usage) {
bindInternal(FramebufferTarget::Read);
/* If the buffer doesn't have sufficient size, resize it */
/** @todo Explicitly reset also when buffer usage changes */
if(image.size() != rectangle.size())
image.setData(image.format(), image.type(), rectangle.size(), nullptr, usage);
image.buffer().bindInternal(Buffer::TargetHint::PixelPack);
(Context::current()->state().framebuffer->readImplementation)(rectangle, image.format(), image.type(), image.dataSize(rectangle.size()), nullptr);
}
void AbstractFramebuffer::read(const Range2Di& rectangle, BufferImage2D& image, BufferUsage usage) {
bindInternal(FramebufferTarget::Read);
/* Reallocate only if needed */
const std::size_t dataSize = Implementation::imageDataSizeFor(image, rectangle.size());
if(image.dataSize() < dataSize)
image.setData(image.storage(), image.format(), image.type(), rectangle.size(), {nullptr, dataSize}, usage);
else
image.setData(image.storage(), image.format(), image.type(), rectangle.size(), nullptr, usage);
image.buffer().bindInternal(Buffer::TargetHint::PixelPack);
image.storage().applyPack();
(Context::current().state().framebuffer->readImplementation)(rectangle, image.format(), image.type(), dataSize, nullptr);
}
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));
}
void RangeTest::size() {
const Range1Di line(34, 47);
const Range2Di rect({34, 23}, {47, 30});
const Range3Di cube({34, 23, -17}, {47, 30, 12});
CORRADE_COMPARE(line.size(), 13);
CORRADE_COMPARE(rect.size(), Vector2i(13, 7));
CORRADE_COMPARE(cube.size(), Vector3i(13, 7, 29));
CORRADE_COMPARE(rect.sizeX(), 13);
CORRADE_COMPARE(rect.sizeY(), 7);
CORRADE_COMPARE(cube.sizeX(), 13);
CORRADE_COMPARE(cube.sizeY(), 7);
CORRADE_COMPARE(cube.sizeZ(), 29);
}