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103 lines
4.0 KiB
103 lines
4.0 KiB
10 months ago
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/*
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This file is part of Magnum.
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
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2020, 2021, 2022, 2023, 2024, 2025
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Vladimír Vondruš <mosra@centrum.cz>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <Corrade/TestSuite/Tester.h>
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#include <Corrade/Utility/DebugStl.h> /** @todo drop once std::pair isn't used (i.e., the whole PixelStorage crap ceases to exist) */
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#include "Magnum/ImageView.h"
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#include "Magnum/PixelFormat.h"
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#include "Magnum/GL/Implementation/imageProperties.h"
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namespace Magnum { namespace GL { namespace Test { namespace {
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struct PixelStorageTest: TestSuite::Tester {
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explicit PixelStorageTest();
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void occupiedCompressedImageDataSize();
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};
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PixelStorageTest::PixelStorageTest() {
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addTests({&PixelStorageTest::occupiedCompressedImageDataSize});
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}
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void PixelStorageTest::occupiedCompressedImageDataSize() {
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/* Assuming a custom 5x4x2 format with 16-byte blocks, with the whole image
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being 55x28x12 */
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const char data[(55/5)*(28/4)*(12/2)*16]{};
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/* If we have no block properties, the passed data size is taken, assuming
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it's the best bet. Image size or row length and image height isn't taken
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into account in any way. */
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{
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CompressedImageView3D image{
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CompressedPixelStorage{}
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.setRowLength(55)
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.setImageHeight(28)
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.setSkip({10, 8, 4}),
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42069, /* custom format */
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{35, 20, 6},
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data};
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CORRADE_COMPARE(Implementation::occupiedCompressedImageDataSize(image, 1337), 1337);
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/* If we have block properties, the size is calculated from those and the
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*image* size, not the supplied row length / image height. This is what
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GL wants, it has no relation to anything useful. For comparison see the PixelStorageTest::dataOffsetSizeCompressed() test in the core
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library. */
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} {
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CompressedImageView3D image{
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CompressedPixelStorage{}
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.setCompressedBlockSize({5, 4, 2})
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.setCompressedBlockDataSize(16)
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.setRowLength(55)
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.setImageHeight(28)
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.setSkip({10, 8, 4}),
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42069, /* custom format */
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{35, 20, 6},
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data};
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CORRADE_COMPARE(Implementation::occupiedCompressedImageDataSize(image, 1337),
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(35/5)*(20/4)*(6/2)*16);
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/* Same result if the size isn't whole blocks */
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} {
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CompressedImageView3D image{
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CompressedPixelStorage{}
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.setCompressedBlockSize({5, 4, 2})
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.setCompressedBlockDataSize(16)
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.setRowLength(55)
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.setImageHeight(28)
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.setSkip({10, 8, 4}),
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42069, /* custom format */
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{31, 19, 5},
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data};
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CORRADE_COMPARE(Implementation::occupiedCompressedImageDataSize(image, 1337),
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(35/5)*(20/4)*(6/2)*16);
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}
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}
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}}}}
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CORRADE_TEST_MAIN(Magnum::GL::Test::PixelStorageTest)
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