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//
// Copyright (c) Microsoft. All rights reserved.
// This code is licensed under the MIT License (MIT).
// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
//
// Developed by Minigraph
//
// Author(s): James Stanard
// Chuck Walbourn (ATG)
//
// This code depends on DirectXTex
//
#include "TextureConvert.h"
#include "../Core/Utility.h"
#include "DirectXTex.h"
using namespace DirectX;
#define GetFlag(f) ((Flags & f) != 0)
void CompileTextureOnDemand(const std::wstring& originalFile, uint32_t flags)
{
std::wstring ddsFile = Utility::RemoveExtension(originalFile) + L".dds";
struct _stat64 ddsFileStat, srcFileStat;
bool srcFileMissing = _wstat64(originalFile.c_str(), &srcFileStat) == -1;
bool ddsFileMissing = _wstat64(ddsFile.c_str(), &ddsFileStat) == -1;
if (srcFileMissing && ddsFileMissing)
{
Utility::Printf("Texture %ws is missing.\n", Utility::RemoveBasePath(originalFile).c_str());
return;
}
// If we can find the source texture and the DDS file is older, reconvert.
if (ddsFileMissing || !srcFileMissing && ddsFileStat.st_mtime < srcFileStat.st_mtime)
{
Utility::Printf("DDS texture %ws missing or older than source. Rebuilding.\n", Utility::RemoveBasePath(originalFile).c_str());
ConvertToDDS(originalFile, flags);
}
}
bool ConvertToDDS( const std::wstring& filePath, uint32_t Flags )
{
bool bInterpretAsSRGB = GetFlag(kSRGB);
bool bPreserveAlpha = GetFlag(kPreserveAlpha);
bool bContainsNormals = GetFlag(kNormalMap);
bool bBumpMap = GetFlag(kBumpToNormal);
bool bBlockCompress = GetFlag(kDefaultBC);
bool bUseBestBC = GetFlag(kQualityBC);
bool bFlipImage = GetFlag(kFlipVertical);
// Can't be both
ASSERT(!bInterpretAsSRGB || !bContainsNormals);
ASSERT(!bPreserveAlpha || !bContainsNormals);
Utility::Printf( "Converting file \"%ws\" to DDS.\n", filePath.c_str() );
// Get extension as utf8 (ascii)
std::wstring ext = Utility::ToLower(Utility::GetFileExtension(filePath));
// Load texture image
TexMetadata info;
std::unique_ptr<ScratchImage> image(new ScratchImage);
bool isDDS = false;
bool isHDR = false;
if ( ext == L"dds" )
{
// TODO: It might be desired to compress or recompress existing DDS files
//Utility::Printf("Ignoring existing DDS \"%ws\".\n", filePath.c_str());
//return false;
isDDS = true;
HRESULT hr = LoadFromDDSFile( filePath.c_str(), DDS_FLAGS_NONE, &info, *image );
if (FAILED(hr))
{
Utility::Printf( "Could not load texture \"%ws\" (DDS: %08X).\n", filePath.c_str(), hr );
return false;
}
}
else if ( ext == L"tga" )
{
HRESULT hr = LoadFromTGAFile( filePath.c_str(), &info, *image );
if (FAILED(hr))
{
Utility::Printf( "Could not load texture \"%ws\" (TGA: %08X).\n", filePath.c_str(), hr );
return false;
}
}
else if ( ext == L"hdr" )
{
isHDR = true;
HRESULT hr = LoadFromHDRFile( filePath.c_str(), &info, *image );
if (FAILED(hr))
{
Utility::Printf( "Could not load texture \"%ws\" (HDR: %08X).\n", filePath.c_str(), hr );
return false;
}
}
else if ( ext == L"exr" )
{
#ifdef USE_OPENEXR
isHDR = true;
HRESULT hr = LoadFromEXRFile(filePath.c_str(), &info, *image);
if (FAILED(hr))
{
Utility::Printf("Could not load texture \"%ws\" (EXR: %08X).\n", filePath.c_str(), hr);
return false;
}
#else
Utility::Printf("OpenEXR not supported for this build of the content exporter\n");
return false;
#endif
}
else
{
WIC_FLAGS wicFlags = WIC_FLAGS_NONE;
//if (g_pScene->Settings().bIgnoreSRGB)
// wicFlags |= WIC_FLAGS_IGNORE_SRGB;
HRESULT hr = LoadFromWICFile( filePath.c_str(), wicFlags, &info, *image );
if (FAILED(hr))
{
Utility::Printf( "Could not load texture \"%ws\" (WIC: %08X).\n", filePath.c_str(), hr );
return false;
}
}
if ( info.width > 16384 || info.height > 16384 )
{
Utility::Printf("Texture size (%Iu,%Iu) too large for feature level 11.0 or later (16384) \"%ws\".\n",
info.width, info.height, filePath.c_str());
return false;
}
if (bFlipImage)
{
std::unique_ptr<ScratchImage> timage(new ScratchImage);
HRESULT hr = FlipRotate( image->GetImages()[0], TEX_FR_FLIP_VERTICAL, *timage );
if (FAILED(hr))
{
Utility::Printf( "Could not flip image \"%ws\" (%08X).\n", filePath.c_str(), hr );
}
else
{
image.swap(timage);
}
}
DXGI_FORMAT tformat;
DXGI_FORMAT cformat;
if (isHDR)
{
tformat = DXGI_FORMAT_R9G9B9E5_SHAREDEXP;
cformat = bBlockCompress ? DXGI_FORMAT_BC6H_UF16 : DXGI_FORMAT_R9G9B9E5_SHAREDEXP;
}
else if (bBlockCompress)
{
tformat = bInterpretAsSRGB ? DXGI_FORMAT_R8G8B8A8_UNORM_SRGB : DXGI_FORMAT_R8G8B8A8_UNORM;
if (bUseBestBC)
cformat = bInterpretAsSRGB ? DXGI_FORMAT_BC7_UNORM_SRGB : DXGI_FORMAT_BC7_UNORM;
else if (bPreserveAlpha)
cformat = bInterpretAsSRGB ? DXGI_FORMAT_BC3_UNORM_SRGB : DXGI_FORMAT_BC3_UNORM;
else
cformat = bInterpretAsSRGB ? DXGI_FORMAT_BC1_UNORM_SRGB : DXGI_FORMAT_BC1_UNORM;
}
else
{
cformat = tformat = bInterpretAsSRGB ? DXGI_FORMAT_R8G8B8A8_UNORM_SRGB : DXGI_FORMAT_R8G8B8A8_UNORM;
}
if (bBumpMap)
{
std::unique_ptr<ScratchImage> timage(new ScratchImage);
HRESULT hr = ComputeNormalMap(image->GetImages(), image->GetImageCount(), image->GetMetadata(),
CNMAP_CHANNEL_LUMINANCE, 10.0f, tformat, *timage);
if (FAILED(hr))
{
Utility::Printf( "Could not compute normal map for \"%ws\" (%08X).\n", filePath.c_str(), hr );
}
else
{
image.swap(timage);
info.format = tformat;
}
}
else if ( info.format != tformat )
{
std::unique_ptr<ScratchImage> timage(new ScratchImage);
HRESULT hr = Convert( image->GetImages(), image->GetImageCount(), image->GetMetadata(),
tformat, TEX_FILTER_DEFAULT, 0.5f, *timage );
if (FAILED(hr))
{
Utility::Printf( "Could not convert \"%ws\" (%08X).\n", filePath.c_str(), hr );
}
else
{
image.swap(timage);
info.format = tformat;
}
}
// Handle mipmaps
if (info.mipLevels == 1)
{
std::unique_ptr<ScratchImage> timage(new ScratchImage);
HRESULT hr = GenerateMipMaps( image->GetImages(), image->GetImageCount(), image->GetMetadata(), TEX_FILTER_DEFAULT, 0, *timage );
if (FAILED(hr))
{
Utility::Printf( "Failing generating mimaps for \"%ws\" (WIC: %08X).\n", filePath.c_str(), hr );
}
else
{
image.swap(timage);
}
}
// Handle compression
if (bBlockCompress)
{
if (info.width % 4 || info.height % 4)
{
Utility::Printf( "Texture size (%Iux%Iu) not a multiple of 4 \"%ws\", so skipping compress\n", info.width, info.height, filePath.c_str() );
}
else
{
std::unique_ptr<ScratchImage> timage(new ScratchImage);
HRESULT hr = Compress( image->GetImages(), image->GetImageCount(), image->GetMetadata(), cformat, TEX_COMPRESS_DEFAULT, 0.5f, *timage );
if (FAILED(hr))
{
Utility::Printf( "Failing compressing \"%ws\" (WIC: %08X).\n", filePath.c_str(), hr );
}
else
{
image.swap(timage);
}
}
}
// Rename file extension to DDS
const std::wstring wDest = Utility::RemoveExtension(filePath) + L".dds";
// Save DDS
HRESULT hr = SaveToDDSFile( image->GetImages(), image->GetImageCount(), image->GetMetadata(), DDS_FLAGS_NONE, wDest.c_str() );
if( FAILED( hr ) )
{
Utility::Printf( "Could not write texture to file \"%ws\" (%08X).\n", wDest.c_str(), hr );
return false;
}
return true;
}