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HiresTextures: Load full mipmap chain from DDS files

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This removes the need for multiple texture files to store the mipmap
chain for a texture. As many mipmaps will be loaded as are present in
the DDS file, and any remaining mipmaps will fall back to the old
behavior.
This commit is contained in:
Stenzek
2017-04-17 00:24:16 +10:00
parent c53a60f3c3
commit 8761c8244d
3 changed files with 236 additions and 85 deletions
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126
Source/Core/VideoCommon/HiresTextures.cpp
View File

@ -395,71 +395,92 @@ std::shared_ptr<HiresTexture> HiresTexture::Search(const u8* texture, size_t tex
std::unique_ptr<HiresTexture> HiresTexture::Load(const std::string& base_filename, u32 width,
u32 height)
{
std::unique_ptr<HiresTexture> ret;
for (int level = 0;; level++)
// We need to have a level 0 custom texture to even consider loading.
auto filename_iter = s_textureMap.find(base_filename);
if (filename_iter == s_textureMap.end())
return nullptr;
// Try to load level 0 (and any mipmaps) from a DDS file.
// If this fails, it's fine, we'll just load level0 again using SOIL.
// Can't use make_unique due to private constructor.
std::unique_ptr<HiresTexture> ret = std::unique_ptr<HiresTexture>(new HiresTexture());
const std::string& first_mip_filename = filename_iter->second;
LoadDDSTexture(ret.get(), first_mip_filename);
// Load remaining mip levels, or from the start if it's not a DDS texture.
for (u32 mip_level = static_cast<u32>(ret->m_levels.size());; mip_level++)
{
std::string filename = base_filename;
if (level)
{
filename += StringFromFormat("_mip%u", level);
}
if (mip_level != 0)
filename += StringFromFormat("_mip%u", mip_level);
auto filename_iter = s_textureMap.find(filename);
if (filename_iter != s_textureMap.end())
{
Level l;
filename_iter = s_textureMap.find(filename);
if (filename_iter == s_textureMap.end())
break;
// Try loading DDS textures first, that way we maintain compression of DXT formats.
// TODO: Reduce the number of open() calls here. We could use one fd.
Level level;
if (!LoadDDSTexture(level, filename_iter->second))
{
File::IOFile file;
file.Open(filename_iter->second, "rb");
std::vector<u8> buffer(file.GetSize());
file.ReadBytes(buffer.data(), file.GetSize());
// Try loading DDS textures first, that way we maintain compression of DXT formats.
if (!LoadDDSTexture(l, buffer) && !LoadTexture(l, buffer))
if (!LoadTexture(level, buffer))
{
ERROR_LOG(VIDEO, "Custom texture %s failed to load", filename.c_str());
break;
}
if (!level)
{
if (l.width * height != l.height * width)
ERROR_LOG(VIDEO, "Invalid custom texture size %dx%d for texture %s. The aspect differs "
"from the native size %dx%d.",
l.width, l.height, filename.c_str(), width, height);
if (width && height && (l.width % width || l.height % height))
WARN_LOG(VIDEO, "Invalid custom texture size %dx%d for texture %s. Please use an integer "
"upscaling factor based on the native size %dx%d.",
l.width, l.height, filename.c_str(), width, height);
width = l.width;
height = l.height;
}
else if (width != l.width || height != l.height)
{
ERROR_LOG(
VIDEO,
"Invalid custom texture size %dx%d for texture %s. This mipmap layer _must_ be %dx%d.",
l.width, l.height, filename.c_str(), width, height);
l.data.reset();
break;
}
if (!ret)
ret = std::unique_ptr<HiresTexture>(new HiresTexture);
ret->m_levels.push_back(std::move(l));
// no more mipmaps available
if (width == 1 && height == 1)
break;
// calculate the size of the next mipmap
width = std::max(1u, width >> 1);
height = std::max(1u, height >> 1);
}
else
ret->m_levels.push_back(std::move(level));
}
// If we failed to load any mip levels, we can't use this texture at all.
if (ret->m_levels.empty())
return nullptr;
// Verify that the aspect ratio of the texture hasn't changed, as this could have side-effects.
const Level& first_mip = ret->m_levels[0];
if (first_mip.width * height != first_mip.height * width)
{
ERROR_LOG(VIDEO, "Invalid custom texture size %ux%u for texture %s. The aspect differs "
"from the native size %ux%u.",
first_mip.width, first_mip.height, first_mip_filename.c_str(), width, height);
}
// Same deal if the custom texture isn't a multiple of the native size.
if (width != 0 && height != 0 && (first_mip.width % width || first_mip.height % height))
{
WARN_LOG(VIDEO, "Invalid custom texture size %ux%u for texture %s. Please use an integer "
"upscaling factor based on the native size %ux%u.",
first_mip.width, first_mip.height, first_mip_filename.c_str(), width, height);
}
// Verify that each mip level is the correct size (divide by 2 each time).
u32 current_mip_width = std::max(first_mip.width / 2, 1u);
u32 current_mip_height = std::max(first_mip.height / 2, 1u);
for (u32 mip_level = 1; mip_level < static_cast<u32>(ret->m_levels.size()); mip_level++)
{
const Level& level = ret->m_levels[mip_level];
if (current_mip_width == level.width && current_mip_height == level.height)
{
break;
current_mip_width = std::max(current_mip_width / 2, 1u);
current_mip_height = std::max(current_mip_height / 2, 1u);
continue;
}
ERROR_LOG(VIDEO,
"Invalid custom texture size %dx%d for texture %s. Mipmap level %u _must_ be %dx%d.",
level.width, level.height, first_mip_filename.c_str(), mip_level, current_mip_width,
current_mip_height);
// Drop this mip level and any others after it.
while (ret->m_levels.size() > mip_level)
ret->m_levels.pop_back();
break;
}
// All levels have to have the same format.
@ -467,8 +488,9 @@ std::unique_ptr<HiresTexture> HiresTexture::Load(const std::string& base_filenam
[&ret](const Level& l) { return l.format != ret->m_levels[0].format; }))
{
ERROR_LOG(VIDEO, "Custom texture %s has inconsistent formats across mip levels.",
base_filename.c_str());
ret.reset();
first_mip_filename.c_str());
return nullptr;
}
return ret;