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https://github.com/RGBCube/serenity
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c72a996542
Adds a method `copy_texels()` to class `Image` that copies a rect of texels from source image to destination.
73 lines
3 KiB
C++
73 lines
3 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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#pragma once
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#include <AK/RefCounted.h>
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#include <AK/Vector.h>
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#include <LibGfx/Vector3.h>
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#include <LibGfx/Vector4.h>
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#include <LibSoftGPU/ImageDataLayout.h>
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#include <LibSoftGPU/ImageFormat.h>
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namespace SoftGPU {
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class Image final : public RefCounted<Image> {
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public:
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Image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers);
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ImageFormat format() const { return m_format; }
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unsigned width() const { return m_width; }
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unsigned height() const { return m_height; }
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unsigned depth() const { return m_depth; }
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unsigned level_width(unsigned level) const { return m_mipmap_sizes[level].x(); }
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unsigned level_height(unsigned level) const { return m_mipmap_sizes[level].y(); }
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unsigned level_depth(unsigned level) const { return m_mipmap_sizes[level].z(); }
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unsigned num_levels() const { return m_num_levels; }
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unsigned num_layers() const { return m_num_layers; }
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FloatVector4 texel(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z) const
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{
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return unpack_color(texel_pointer(layer, level, x, y, z), m_format);
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}
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void set_texel(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z, FloatVector4 const& color)
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{
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pack_color(color, texel_pointer(layer, level, x, y, z), m_format);
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}
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void write_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void const* data, ImageDataLayout const& layout);
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void read_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void* data, ImageDataLayout const& layout) const;
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void copy_texels(Image const& source, unsigned source_layer, unsigned source_level, Vector3<unsigned> const& source_offset, Vector3<unsigned> const& size, unsigned destination_layer, unsigned destination_level, Vector3<unsigned> const& destination_offset);
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private:
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void const* texel_pointer(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z) const
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{
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auto size = m_mipmap_sizes[level];
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return &m_data[m_mipchain_size * layer + m_mipmap_offsets[level] + (z * size.x() * size.y() + y * size.x() + x) * element_size(m_format)];
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}
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void* texel_pointer(unsigned layer, unsigned level, unsigned x, unsigned y, unsigned z)
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{
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auto size = m_mipmap_sizes[level];
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return &m_data[m_mipchain_size * layer + m_mipmap_offsets[level] + (z * size.x() * size.y() + y * size.x() + x) * element_size(m_format)];
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}
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private:
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ImageFormat m_format { ImageFormat::RGBA8888 };
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unsigned m_width { 0 };
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unsigned m_height { 0 };
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unsigned m_depth { 0 };
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unsigned m_num_levels { 0 };
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unsigned m_num_layers { 0 };
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size_t m_mipchain_size { 0 };
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Vector<size_t, 16> m_mipmap_offsets;
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Vector<Vector3<unsigned>, 16> m_mipmap_sizes;
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Vector<u8> m_data;
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};
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}
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