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/*
* Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Math.h>
#include <LibGPU/Image.h>
namespace GPU {
Image::Image(void const* ownership_token, GPU::PixelFormat const& pixel_format, u32 width, u32 height, u32 depth, u32 max_levels)
: m_ownership_token { ownership_token }
, m_pixel_format { pixel_format }
{
VERIFY(width > 0);
VERIFY(height > 0);
VERIFY(depth > 0);
VERIFY(max_levels > 0);
u32 number_of_levels_in_full_chain = max(max(AK::log2(width), AK::log2(height)), AK::log2(depth)) + 1;
m_mipmap_sizes.resize(min(max_levels, number_of_levels_in_full_chain));
for (u32 level = 0; level < m_mipmap_sizes.size(); ++level) {
m_mipmap_sizes[level] = { width, height, depth };
width = max(width / 2, 1);
height = max(height / 2, 1);
depth = max(depth / 2, 1);
}
}
}
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