mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 08:12:43 +00:00
6f261d0362
Where possible the sampler will wrap texture coordinates using a bitwise and instead of a modulus. This speeds up the calculation quite a bit.
114 lines
4.5 KiB
C++
114 lines
4.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibSoftGPU/Image.h>
|
|
|
|
namespace SoftGPU {
|
|
|
|
Image::Image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers)
|
|
: m_format(format)
|
|
, m_width(width)
|
|
, m_height(height)
|
|
, m_depth(depth)
|
|
, m_num_layers(layers)
|
|
{
|
|
VERIFY(width > 0);
|
|
VERIFY(height > 0);
|
|
VERIFY(depth > 0);
|
|
VERIFY(levels > 0);
|
|
VERIFY(layers > 0);
|
|
|
|
if ((width & (width - 1)) == 0)
|
|
m_width_is_power_of_two = true;
|
|
|
|
if ((height & (height - 1)) == 0)
|
|
m_height_is_power_of_two = true;
|
|
|
|
if ((depth & (depth - 1)) == 0)
|
|
m_depth_is_power_of_two = true;
|
|
|
|
m_mipmap_sizes.append({ width, height, depth });
|
|
m_mipmap_offsets.append(0);
|
|
|
|
m_mipchain_size += width * height * depth * element_size(format);
|
|
|
|
while (--levels && (width > 1 || height > 1 || depth > 1)) {
|
|
width = max(width / 2, 1);
|
|
height = max(height / 2, 1);
|
|
depth = max(depth / 2, 1);
|
|
m_mipmap_sizes.append({ width, height, depth });
|
|
m_mipmap_offsets.append(m_mipchain_size);
|
|
|
|
m_mipchain_size += width * height * depth * element_size(format);
|
|
}
|
|
|
|
m_num_levels = m_mipmap_sizes.size();
|
|
|
|
m_data.resize(m_mipchain_size * m_num_layers);
|
|
}
|
|
|
|
void Image::write_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void const* data, ImageDataLayout const& layout)
|
|
{
|
|
VERIFY(layer < num_layers());
|
|
VERIFY(level < num_levels());
|
|
VERIFY(offset.x() + size.x() <= level_width(level));
|
|
VERIFY(offset.y() + size.y() <= level_height(level));
|
|
VERIFY(offset.z() + size.z() <= level_depth(level));
|
|
|
|
for (unsigned z = 0; z < size.z(); ++z) {
|
|
for (unsigned y = 0; y < size.y(); ++y) {
|
|
for (unsigned x = 0; x < size.x(); ++x) {
|
|
auto ptr = reinterpret_cast<u8 const*>(data) + layout.depth_stride * z + layout.row_stride * y + layout.column_stride * x;
|
|
auto color = unpack_color(ptr, layout.format);
|
|
set_texel(layer, level, offset.x() + x, offset.y() + y, offset.z() + z, color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Image::read_texels(unsigned layer, unsigned level, Vector3<unsigned> const& offset, Vector3<unsigned> const& size, void* data, ImageDataLayout const& layout) const
|
|
{
|
|
VERIFY(layer < num_layers());
|
|
VERIFY(level < num_levels());
|
|
VERIFY(offset.x() + size.x() <= level_width(level));
|
|
VERIFY(offset.y() + size.y() <= level_height(level));
|
|
VERIFY(offset.z() + size.z() <= level_depth(level));
|
|
|
|
for (unsigned z = 0; z < size.z(); ++z) {
|
|
for (unsigned y = 0; y < size.y(); ++y) {
|
|
for (unsigned x = 0; x < size.x(); ++x) {
|
|
auto color = texel(layer, level, offset.x() + x, offset.y() + y, offset.z() + z);
|
|
auto ptr = reinterpret_cast<u8*>(data) + layout.depth_stride * z + layout.row_stride * y + layout.column_stride * x;
|
|
pack_color(color, ptr, layout.format);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Image::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)
|
|
{
|
|
VERIFY(source_layer < source.num_layers());
|
|
VERIFY(source_level < source.num_levels());
|
|
VERIFY(source_offset.x() + size.x() <= source.level_width(source_level));
|
|
VERIFY(source_offset.y() + size.y() <= source.level_height(source_level));
|
|
VERIFY(source_offset.z() + size.z() <= source.level_depth(source_level));
|
|
VERIFY(destination_layer < num_layers());
|
|
VERIFY(destination_level < num_levels());
|
|
VERIFY(destination_offset.x() + size.x() <= level_width(destination_level));
|
|
VERIFY(destination_offset.y() + size.y() <= level_height(destination_level));
|
|
VERIFY(destination_offset.z() + size.z() <= level_depth(destination_level));
|
|
|
|
for (unsigned z = 0; z < size.z(); ++z) {
|
|
for (unsigned y = 0; y < size.y(); ++y) {
|
|
for (unsigned x = 0; x < size.x(); ++x) {
|
|
auto color = source.texel(source_layer, source_level, source_offset.x() + x, source_offset.y() + y, source_offset.z() + z);
|
|
set_texel(destination_layer, destination_level, destination_offset.x() + x, destination_offset.y() + y, destination_offset.z() + z, color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|