TextureDesc LoadTextureFormat(StringSection<::Assets::ResChar> filename)
{
ucs2 wfilename[MaxPath];
Conversion::Convert(wfilename, dimof(wfilename), filename.begin(), filename.end());
auto fmt = GetTexFmt(wfilename);
using namespace DirectX;
TexMetadata metadata;
HRESULT hresult = -1;
if (fmt == TexFmt::DDS) {
hresult = GetMetadataFromDDSFile((const wchar_t*)wfilename, DDS_FLAGS_NONE, metadata);
} else if (fmt == TexFmt::TGA) {
hresult = GetMetadataFromTGAFile((const wchar_t*)wfilename, metadata);
} else if (fmt == TexFmt::WIC) {
hresult = GetMetadataFromWICFile((const wchar_t*)wfilename, WIC_FLAGS_NONE, metadata);
} else {
LogWarning << "Texture format not apparent from filename (" << filename.AsString().c_str() << ")";
}
if (SUCCEEDED(hresult)) {
return BuildTextureDesc(metadata);
}
return TextureDesc::Empty();
}
void Execute(StringSection<char> cmdLine)
{
// We're going to run a simple process that loads a texture file, runs some shader
// process, and then writes out an output file.
// This is a command line app; so our instructions should be on the command line.
// We're going to use a stream formatter & our "Document" asbtraction to interpret
// the command line.
// We could replace the formatter with a version specialized for
// command lines if we wanted a unix style command line syntax (and, actually, some
// syntax elements of this formatter [like ';'] might conflict on some OSs.
MemoryMappedInputStream stream(cmdLine.begin(), cmdLine.end());
InputStreamFormatter<char> formatter(stream);
Document<InputStreamFormatter<char>> doc(formatter);
auto outputFile = doc.Attribute("o").Value();
auto shader = doc.Attribute("s").Value();
if (outputFile.Empty() || shader.Empty()) {
return;
}
auto xleDir = GetEnv("XLE_DIR");
if (xleDir.empty()) {
LogAlwaysError << "XLE_DIR environment variable isn't set. Expecting this to be set to root XLE directory";
LogAlwaysError << "This program loads shaders from the $(XLE_DIR)\\Working\\Game\\xleres folder";
return;
}
// we can now construct basic services
auto cleanup = MakeAutoCleanup([]() {
TerminateFileSystemMonitoring();
});
auto device = RenderCore::CreateDevice();
Samples::MinimalAssetServices services(device.get());
// We need to think about SRGB modes... do we want to do the processing in
// linear or SRGB space? So we want to write out a linear or SRB texture?
auto shaderParameters = CreateParameterBox(doc.Element("p"));
auto resultTexture = ExecuteTransform(
*device, MakeStringSection(xleDir), shader, shaderParameters,
{
{ "Sky", HosekWilkieSky },
{ "Compress", CompressTexture }
});
if (!resultTexture._pkt) {
LogAlwaysError << "Error while performing texture transform";
return;
}
// save "readback" as an output texture.
// We will write a uncompressed format; normally a second command line
// tool will be used to compress the result.
resultTexture.Save(outputFile.AsString().c_str());
}
void DirectorySearchRules::AddSearchDirectory(StringSection<ResChar> dir)
{
// Attempt to fit this directory into our buffer.
// note that we have limited space in the buffer, but we can't really
// rely on all directory names remaining small and convenient... If we
// overflow our fixed size buffer, we can use the dynamically
// allocated "_bufferOverflow"
assert((_startPointCount+1) <= dimof(_startOffsets));
if ((_startPointCount+1) > dimof(_startOffsets)) {
// limited number of directories that can be pushed into a single "search rules"
// this allows us to avoid a little bit of awkward dynamic memory allocation
return;
}
// Check for duplicates
// Duplicates are bad because they will increase the number of search operations
if (HasDirectory(dir)) return;
unsigned allocationLength = (unsigned)(dir.Length() + 1);
if (_bufferOverflow.empty() && (_bufferUsed + allocationLength <= dimof(_buffer))) {
// just append this new string to our buffer, and add a new start offset
XlCopyMemory(&_buffer[_bufferUsed], dir.begin(), (allocationLength-1) * sizeof(ResChar));
_buffer[_bufferUsed+allocationLength-1] = '\0';
} else {
if (_bufferOverflow.empty()) {
_bufferOverflow.resize(_bufferUsed + allocationLength);
XlCopyMemory(AsPointer(_bufferOverflow.begin()), _buffer, _bufferUsed * sizeof(ResChar));
XlCopyMemory(PtrAdd(AsPointer(_bufferOverflow.begin()), _bufferUsed * sizeof(ResChar)), dir.begin(), (allocationLength-1) * sizeof(ResChar));
_bufferOverflow[_bufferUsed+allocationLength-1] = '\0';
} else {
assert(_bufferOverflow.size() == allocationLength);
auto i = _bufferOverflow.insert(_bufferOverflow.end(), dir.begin(), dir.end());
_bufferOverflow.insert(i + dir.Length(), 0);
}
}
_startOffsets[_startPointCount++] = _bufferUsed;
_bufferUsed += allocationLength;
}
intrusive_ptr<DataPacket> CreateStreamingTextureSource(
StringSection<::Assets::ResChar> filename, TextureLoadFlags::BitField flags)
{
return make_intrusive<StreamingTexture>(filename.begin(), filename.end(), flags);
}