dolphin/Source/Core/VideoCommon/TextureInfo.cpp

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// Copyright 2021 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoCommon/TextureInfo.h"
#include <fmt/format.h>
#include <xxhash.h>
#include "Common/Align.h"
#include "Core/HW/Memmap.h"
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/TextureDecoder.h"
TextureInfo TextureInfo::FromStage(u32 stage)
{
const auto tex = bpmem.tex.GetUnit(stage);
const auto texture_format = tex.texImage0.format;
const auto tlut_format = tex.texTlut.tlut_format;
const auto width = tex.texImage0.width + 1;
const auto height = tex.texImage0.height + 1;
const u32 address = (tex.texImage3.image_base /* & 0x1FFFFF*/) << 5;
const u32 tlutaddr = tex.texTlut.tmem_offset << 9;
const u8* tlut_ptr = &texMem[tlutaddr];
std::optional<u32> mip_count;
const bool has_mipmaps = tex.texMode0.mipmap_filter != MipMode::None;
if (has_mipmaps)
{
mip_count = (tex.texMode1.max_lod + 0xf) / 0x10;
}
const bool from_tmem = tex.texImage1.cache_manually_managed != 0;
const u32 tmem_address_even = from_tmem ? tex.texImage1.tmem_even * TMEM_LINE_SIZE : 0;
const u32 tmem_address_odd = from_tmem ? tex.texImage2.tmem_odd * TMEM_LINE_SIZE : 0;
if (from_tmem)
{
return TextureInfo(stage, &texMem[tmem_address_even], tlut_ptr, address, texture_format,
tlut_format, width, height, true, &texMem[tmem_address_odd],
&texMem[tmem_address_even], mip_count);
}
return TextureInfo(stage, Memory::GetPointer(address), tlut_ptr, address, texture_format,
tlut_format, width, height, false, nullptr, nullptr, mip_count);
}
TextureInfo::TextureInfo(u32 stage, const u8* ptr, const u8* tlut_ptr, u32 address,
TextureFormat texture_format, TLUTFormat tlut_format, u32 width,
u32 height, bool from_tmem, const u8* tmem_odd, const u8* tmem_even,
std::optional<u32> mip_count)
: m_stage(stage), m_ptr(ptr), m_tlut_ptr(tlut_ptr), m_address(address), m_from_tmem(from_tmem),
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m_tmem_odd(tmem_odd), m_texture_format(texture_format), m_tlut_format(tlut_format),
m_raw_width(width), m_raw_height(height)
{
const bool is_palette_texture = IsColorIndexed(m_texture_format);
if (is_palette_texture)
m_palette_size = TexDecoder_GetPaletteSize(m_texture_format);
// TexelSizeInNibbles(format) * width * height / 16;
m_block_width = TexDecoder_GetBlockWidthInTexels(m_texture_format);
m_block_height = TexDecoder_GetBlockHeightInTexels(m_texture_format);
m_expanded_width = Common::AlignUp(m_raw_width, m_block_width);
m_expanded_height = Common::AlignUp(m_raw_height, m_block_height);
m_texture_size =
TexDecoder_GetTextureSizeInBytes(m_expanded_width, m_expanded_height, m_texture_format);
if (mip_count)
{
m_mipmaps_enabled = true;
const u32 raw_mip_count = *mip_count;
// GPUs don't like when the specified mipmap count would require more than one 1x1-sized LOD in
// the mipmap chain
// e.g. 64x64 with 7 LODs would have the mipmap chain 64x64,32x32,16x16,8x8,4x4,2x2,1x1,0x0, so
// we limit the mipmap count to 6 there
const u32 limited_mip_count =
std::min<u32>(IntLog2(std::max(width, height)) + 1, raw_mip_count + 1) - 1;
// load mips
const u8* src_data = m_ptr + GetTextureSize();
if (tmem_even)
tmem_even += GetTextureSize();
for (u32 i = 0; i < limited_mip_count; i++)
{
MipLevel mip_level(i + 1, *this, m_from_tmem, src_data, tmem_even, tmem_odd);
m_mip_levels.push_back(std::move(mip_level));
}
}
}
std::string TextureInfo::NameDetails::GetFullName() const
{
return fmt::format("{}_{}{}_{}", base_name, texture_name, tlut_name, format_name);
}
TextureInfo::NameDetails TextureInfo::CalculateTextureName() const
{
if (!m_ptr)
return NameDetails{};
const u8* tlut = m_tlut_ptr;
size_t tlut_size = m_palette_size ? *m_palette_size : 0;
// checking for min/max on paletted textures
u32 min = 0xffff;
u32 max = 0;
switch (tlut_size)
{
case 0:
break;
case 16 * 2:
for (size_t i = 0; i < m_texture_size; i++)
{
const u32 low_nibble = m_ptr[i] & 0xf;
const u32 high_nibble = m_ptr[i] >> 4;
min = std::min({min, low_nibble, high_nibble});
max = std::max({max, low_nibble, high_nibble});
}
break;
case 256 * 2:
{
for (size_t i = 0; i < m_texture_size; i++)
{
const u32 texture_byte = m_ptr[i];
min = std::min(min, texture_byte);
max = std::max(max, texture_byte);
}
break;
}
case 16384 * 2:
for (size_t i = 0; i < m_texture_size; i += sizeof(u16))
{
const u32 texture_halfword = Common::swap16(m_ptr[i]) & 0x3fff;
min = std::min(min, texture_halfword);
max = std::max(max, texture_halfword);
}
break;
}
if (tlut_size > 0)
{
tlut_size = 2 * (max + 1 - min);
tlut += 2 * min;
}
const u64 tex_hash = XXH64(m_ptr, m_texture_size, 0);
const u64 tlut_hash = tlut_size ? XXH64(tlut, tlut_size, 0) : 0;
NameDetails result;
result.base_name = fmt::format("{}{}x{}{}", format_prefix, m_raw_width, m_raw_height,
m_mipmaps_enabled ? "_m" : "");
result.texture_name = fmt::format("{:016x}", tex_hash);
result.tlut_name = tlut_size ? fmt::format("_{:016x}", tlut_hash) : "";
result.format_name = fmt::to_string(static_cast<int>(m_texture_format));
return result;
}
const u8* TextureInfo::GetData() const
{
return m_ptr;
}
const u8* TextureInfo::GetTlutAddress() const
{
return m_tlut_ptr;
}
u32 TextureInfo::GetRawAddress() const
{
return m_address;
}
bool TextureInfo::IsFromTmem() const
{
return m_from_tmem;
}
const u8* TextureInfo::GetTmemOddAddress() const
{
return m_tmem_odd;
}
TextureFormat TextureInfo::GetTextureFormat() const
{
return m_texture_format;
}
TLUTFormat TextureInfo::GetTlutFormat() const
{
return m_tlut_format;
}
std::optional<u32> TextureInfo::GetPaletteSize() const
{
return m_palette_size;
}
u32 TextureInfo::GetTextureSize() const
{
return m_texture_size;
}
u32 TextureInfo::GetBlockWidth() const
{
return m_block_width;
}
u32 TextureInfo::GetBlockHeight() const
{
return m_block_height;
}
u32 TextureInfo::GetExpandedWidth() const
{
return m_expanded_width;
}
u32 TextureInfo::GetExpandedHeight() const
{
return m_expanded_height;
}
u32 TextureInfo::GetRawWidth() const
{
return m_raw_width;
}
u32 TextureInfo::GetRawHeight() const
{
return m_raw_height;
}
u32 TextureInfo::GetStage() const
{
return m_stage;
}
bool TextureInfo::HasMipMaps() const
{
return !m_mip_levels.empty();
}
u32 TextureInfo::GetLevelCount() const
{
return static_cast<u32>(m_mip_levels.size()) + 1;
}
const TextureInfo::MipLevel* TextureInfo::GetMipMapLevel(u32 level) const
{
if (level < m_mip_levels.size())
return &m_mip_levels[level];
return nullptr;
}
TextureInfo::MipLevel::MipLevel(u32 level, const TextureInfo& parent, bool from_tmem,
const u8*& src_data, const u8*& ptr_even, const u8*& ptr_odd)
{
m_raw_width = std::max(parent.GetRawWidth() >> level, 1u);
m_raw_height = std::max(parent.GetRawHeight() >> level, 1u);
m_expanded_width = Common::AlignUp(m_raw_width, parent.GetBlockWidth());
m_expanded_height = Common::AlignUp(m_raw_height, parent.GetBlockHeight());
m_texture_size = TexDecoder_GetTextureSizeInBytes(m_expanded_width, m_expanded_height,
parent.GetTextureFormat());
const u8*& ptr = from_tmem ? ((level % 2) ? ptr_odd : ptr_even) : src_data;
m_ptr = ptr;
ptr += m_texture_size;
}
u32 TextureInfo::GetFullLevelSize() const
{
u32 all_mips_size = 0;
for (const auto& mip_map : m_mip_levels)
{
all_mips_size += mip_map.GetTextureSize();
}
return m_texture_size + all_mips_size;
}
const u8* TextureInfo::MipLevel::GetData() const
{
return m_ptr;
}
u32 TextureInfo::MipLevel::GetTextureSize() const
{
return m_texture_size;
}
u32 TextureInfo::MipLevel::GetExpandedWidth() const
{
return m_expanded_width;
}
u32 TextureInfo::MipLevel::GetExpandedHeight() const
{
return m_expanded_height;
}
u32 TextureInfo::MipLevel::GetRawWidth() const
{
return m_raw_width;
}
u32 TextureInfo::MipLevel::GetRawHeight() const
{
return m_raw_height;
}