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// Copyright 2017 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoBackends/Software/SWTexture.h"
#include <cstring>
#include "Common/Assert.h"
#include "VideoBackends/Software/CopyRegion.h"
#include "VideoBackends/Software/SWGfx.h"
namespace SW
{
namespace
{
#pragma pack(push, 1)
struct Pixel
{
u8 r;
u8 g;
u8 b;
u8 a;
};
#pragma pack(pop)
void CopyTextureData(const TextureConfig& src_config, const u8* src_ptr, u32 src_x, u32 src_y,
u32 width, u32 height, u32 src_level, const TextureConfig& dst_config,
u8* dst_ptr, u32 dst_x, u32 dst_y, u32 dst_level)
{
const size_t texel_size = AbstractTexture::GetTexelSizeForFormat(src_config.format);
const size_t src_stride = src_config.GetMipStride(src_level);
const size_t src_offset =
static_cast<size_t>(src_y) * src_stride + static_cast<size_t>(src_x) * texel_size;
const size_t dst_stride = dst_config.GetMipStride(dst_level);
const size_t dst_offset =
static_cast<size_t>(dst_y) * dst_stride + static_cast<size_t>(dst_x) * texel_size;
const size_t copy_len = static_cast<size_t>(width) * texel_size;
src_ptr += src_offset;
dst_ptr += dst_offset;
for (u32 i = 0; i < height; i++)
{
std::memcpy(dst_ptr, src_ptr, copy_len);
src_ptr += src_stride;
dst_ptr += dst_stride;
}
}
} // namespace
void SWGfx::ScaleTexture(AbstractFramebuffer* dst_framebuffer,
const MathUtil::Rectangle<int>& dst_rect,
const AbstractTexture* src_texture,
const MathUtil::Rectangle<int>& src_rect)
{
const SWTexture* software_source_texture = static_cast<const SWTexture*>(src_texture);
SWTexture* software_dest_texture = static_cast<SWTexture*>(dst_framebuffer->GetColorAttachment());
CopyRegion(reinterpret_cast<const Pixel*>(software_source_texture->GetData(0, 0)), src_rect,
src_texture->GetWidth(), src_texture->GetHeight(),
reinterpret_cast<Pixel*>(software_dest_texture->GetData(0, 0)), dst_rect,
dst_framebuffer->GetWidth(), dst_framebuffer->GetHeight());
}
SWTexture::SWTexture(const TextureConfig& tex_config) : AbstractTexture(tex_config)
{
m_data.resize(tex_config.layers);
for (u32 layer = 0; layer < tex_config.layers; layer++)
{
m_data[layer].resize(tex_config.levels);
for (u32 level = 0; level < tex_config.levels; level++)
{
m_data[layer][level].resize(std::max(tex_config.width >> level, 1u) *
std::max(tex_config.height >> level, 1u) * sizeof(Pixel));
}
}
}
void SWTexture::CopyRectangleFromTexture(const AbstractTexture* src,
const MathUtil::Rectangle<int>& src_rect, u32 src_layer,
u32 src_level, const MathUtil::Rectangle<int>& dst_rect,
u32 dst_layer, u32 dst_level)
{
CopyTextureData(src->GetConfig(),
static_cast<const SWTexture*>(src)->GetData(src_layer, src_level), src_rect.left,
src_rect.top, src_rect.GetWidth(), src_rect.GetHeight(), src_level, m_config,
GetData(dst_layer, dst_level), dst_rect.left, dst_rect.top, dst_level);
}
void SWTexture::ResolveFromTexture(const AbstractTexture* src, const MathUtil::Rectangle<int>& rect,
u32 layer, u32 level)
{
}
void SWTexture::Load(u32 level, u32 width, u32 height, u32 row_length, const u8* buffer,
size_t buffer_size, u32 layer)
{
u8* data = GetData(layer, level);
for (u32 y = 0; y < height; y++)
{
memcpy(&data[width * y * sizeof(Pixel)], &buffer[y * row_length * sizeof(Pixel)],
width * sizeof(Pixel));
}
}
const u8* SWTexture::GetData(u32 layer, u32 level) const
{
return m_data[layer][level].data();
}
u8* SWTexture::GetData(u32 layer, u32 level)
{
return m_data[layer][level].data();
}
SWStagingTexture::SWStagingTexture(StagingTextureType type, const TextureConfig& config)
: AbstractStagingTexture(type, config)
{
m_data.resize(m_texel_size * config.width * config.height);
m_map_pointer = reinterpret_cast<char*>(m_data.data());
m_map_stride = m_texel_size * config.width;
}
SWStagingTexture::~SWStagingTexture() = default;
void SWStagingTexture::CopyFromTexture(const AbstractTexture* src,
const MathUtil::Rectangle<int>& src_rect, u32 src_layer,
u32 src_level, const MathUtil::Rectangle<int>& dst_rect)
{
CopyTextureData(src->GetConfig(),
static_cast<const SWTexture*>(src)->GetData(src_layer, src_level), src_rect.left,
src_rect.top, src_rect.GetWidth(), src_rect.GetHeight(), src_level, m_config,
m_data.data(), dst_rect.left, dst_rect.top, 0);
m_needs_flush = true;
}
void SWStagingTexture::CopyToTexture(const MathUtil::Rectangle<int>& src_rect, AbstractTexture* dst,
const MathUtil::Rectangle<int>& dst_rect, u32 dst_layer,
u32 dst_level)
{
CopyTextureData(m_config, m_data.data(), src_rect.left, src_rect.top, src_rect.GetWidth(),
src_rect.GetHeight(), 0, dst->GetConfig(),
static_cast<SWTexture*>(dst)->GetData(dst_layer, dst_level), dst_rect.left,
dst_rect.top, dst_level);
m_needs_flush = true;
}
bool SWStagingTexture::Map()
{
return true;
}
void SWStagingTexture::Unmap()
{
}
void SWStagingTexture::Flush()
{
m_needs_flush = false;
}
SWFramebuffer::SWFramebuffer(AbstractTexture* color_attachment, AbstractTexture* depth_attachment,
std::vector<AbstractTexture*> additional_color_attachments,
AbstractTextureFormat color_format, AbstractTextureFormat depth_format,
u32 width, u32 height, u32 layers, u32 samples)
: AbstractFramebuffer(color_attachment, depth_attachment,
std::move(additional_color_attachments), color_format, depth_format,
width, height, layers, samples)
{
}
std::unique_ptr<SWFramebuffer>
SWFramebuffer::Create(SWTexture* color_attachment, SWTexture* depth_attachment,
std::vector<AbstractTexture*> additional_color_attachments)
{
if (!ValidateConfig(color_attachment, depth_attachment, additional_color_attachments))
return nullptr;
const AbstractTextureFormat color_format =
color_attachment ? color_attachment->GetFormat() : AbstractTextureFormat::Undefined;
const AbstractTextureFormat depth_format =
depth_attachment ? depth_attachment->GetFormat() : AbstractTextureFormat::Undefined;
const SWTexture* either_attachment = color_attachment ? color_attachment : depth_attachment;
const u32 width = either_attachment->GetWidth();
const u32 height = either_attachment->GetHeight();
const u32 layers = either_attachment->GetLayers();
const u32 samples = either_attachment->GetSamples();
return std::make_unique<SWFramebuffer>(color_attachment, depth_attachment,
std::move(additional_color_attachments), color_format,
depth_format, width, height, layers, samples);
}
} // namespace SW
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