91ccf9958f
This serves as the storage for all image types. 1D, 2D, 3D, Cube and image arrays. Upon construction a full mipmap chain is generated and the image is immutable afterwards with respect to its layout.
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
/*
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* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibSoftGPU/Image.h>
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namespace SoftGPU {
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Image::Image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers)
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: m_format(format)
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, m_width(width)
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, m_height(height)
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, m_depth(depth)
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, m_num_layers(layers)
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{
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VERIFY(width > 0);
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VERIFY(height > 0);
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VERIFY(depth > 0);
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VERIFY(levels > 0);
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VERIFY(layers > 0);
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m_mipmap_sizes.append({ width, height, depth });
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m_mipmap_offsets.append(0);
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m_mipchain_size += width * height * depth * element_size(format);
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while (--levels && (width > 1 || height > 1 || depth > 1)) {
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width = max(width / 2, 1);
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height = max(height / 2, 1);
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depth = max(depth / 2, 1);
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m_mipmap_sizes.append({ width, height, depth });
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m_mipmap_offsets.append(m_mipchain_size);
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m_mipchain_size += width * height * depth * element_size(format);
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}
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m_num_levels = m_mipmap_sizes.size();
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m_data.resize(m_mipchain_size * m_num_layers);
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}
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}
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