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Ex versions of DDS load function to return original DDPIXELFORMAT metadata (#373)

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Chuck Walbourn 2023-07-10 13:23:13 -07:00 committed by GitHub
parent 83ea5ee1bc
commit 4d9d7a8ceb
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 106 additions and 5 deletions
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1
DirectXTex/DDS.h
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@ -284,6 +284,7 @@ namespace DirectX
#pragma pack(pop)
static_assert(sizeof(DDS_PIXELFORMAT) == 32, "DDS pixel format size mismatch");
static_assert(sizeof(DDS_HEADER) == 124, "DDS Header size mismatch");
static_assert(sizeof(DDS_HEADER_DXT10) == 20, "DDS DX10 Extended Header size mismatch");

38
DirectXTex/DirectXTex.h
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@ -187,6 +187,20 @@ namespace DirectX
// Helper for dimension
};
struct DDSMetaData
{
uint32_t size; // DDPIXELFORMAT.dwSize
uint32_t flags; // DDPIXELFORMAT.dwFlags
uint32_t fourCC; // DDPIXELFORMAT.dwFourCC
uint32_t RGBBitCount; // DDPIXELFORMAT.dwRGBBitCount/dwYUVBitCount/dwAlphaBitDepth/dwLuminanceBitCount/dwBumpBitCount
uint32_t RBitMask; // DDPIXELFORMAT.dwRBitMask/dwYBitMask/dwLuminanceBitMask/dwBumpDuBitMask
uint32_t GBitMask; // DDPIXELFORMAT.dwGBitMask/dwUBitMask/dwBumpDvBitMask
uint32_t BBitMask; // DDPIXELFORMAT.dwBBitMask/dwVBitMask/dwBumpLuminanceBitMask
uint32_t ABitMask; // DDPIXELFORMAT.dwRGBAlphaBitMask/dwYUVAlphaBitMask/dwLuminanceAlphaBitMask
bool __cdecl IsDX10() const noexcept { return (fourCC == 0x30315844); }
};
enum DDS_FLAGS : unsigned long
{
DDS_FLAGS_NONE = 0x0,
@ -304,6 +318,17 @@ namespace DirectX
_In_ DDS_FLAGS flags,
_Out_ TexMetadata& metadata) noexcept;
HRESULT __cdecl GetMetadataFromDDSMemoryEx(
_In_reads_bytes_(size) const void* pSource, _In_ size_t size,
_In_ DDS_FLAGS flags,
_Out_ TexMetadata& metadata,
_Out_opt_ DDSMetaData* ddPixelFormat) noexcept;
HRESULT __cdecl GetMetadataFromDDSFileEx(
_In_z_ const wchar_t* szFile,
_In_ DDS_FLAGS flags,
_Out_ TexMetadata& metadata,
_Out_opt_ DDSMetaData* ddPixelFormat) noexcept;
HRESULT __cdecl GetMetadataFromHDRMemory(
_In_reads_bytes_(size) const void* pSource, _In_ size_t size,
_Out_ TexMetadata& metadata) noexcept;
@ -448,6 +473,19 @@ namespace DirectX
_In_ DDS_FLAGS flags,
_Out_opt_ TexMetadata* metadata, _Out_ ScratchImage& image) noexcept;
HRESULT __cdecl LoadFromDDSMemoryEx(
_In_reads_bytes_(size) const void* pSource, _In_ size_t size,
_In_ DDS_FLAGS flags,
_Out_opt_ TexMetadata* metadata,
_Out_opt_ DDSMetaData* ddPixelFormat,
_Out_ ScratchImage& image) noexcept;
HRESULT __cdecl LoadFromDDSFileEx(
_In_z_ const wchar_t* szFile,
_In_ DDS_FLAGS flags,
_Out_opt_ TexMetadata* metadata,
_Out_opt_ DDSMetaData* ddPixelFormat,
_Out_ ScratchImage& image) noexcept;
HRESULT __cdecl SaveToDDSMemory(
_In_ const Image& image,
_In_ DDS_FLAGS flags,

72
DirectXTex/DirectXTexDDS.cpp
View File

@ -314,12 +314,17 @@ namespace
size_t size,
DDS_FLAGS flags,
_Out_ TexMetadata& metadata,
_Out_opt_ DDSMetaData* ddPixelFormat,
_Inout_ uint32_t& convFlags) noexcept
{
if (!pSource)
return E_INVALIDARG;
memset(&metadata, 0, sizeof(TexMetadata));
metadata = {};
if (ddPixelFormat)
{
*ddPixelFormat = {};
}
if (size < (sizeof(DDS_HEADER) + sizeof(uint32_t)))
{
@ -594,6 +599,19 @@ namespace
}
}
// Handle DDS-specific metadata
if (ddPixelFormat)
{
ddPixelFormat->size = pHeader->ddspf.size;
ddPixelFormat->flags = pHeader->ddspf.flags;
ddPixelFormat->fourCC = pHeader->ddspf.fourCC;
ddPixelFormat->RGBBitCount = pHeader->ddspf.RGBBitCount;
ddPixelFormat->RBitMask = pHeader->ddspf.RBitMask;
ddPixelFormat->GBitMask = pHeader->ddspf.GBitMask;
ddPixelFormat->BBitMask = pHeader->ddspf.BBitMask;
ddPixelFormat->ABitMask = pHeader->ddspf.ABitMask;
}
return S_OK;
}
}
@ -1632,12 +1650,23 @@ HRESULT DirectX::GetMetadataFromDDSMemory(
size_t size,
DDS_FLAGS flags,
TexMetadata& metadata) noexcept
{
return GetMetadataFromDDSMemoryEx(pSource, size, flags, metadata, nullptr);
}
_Use_decl_annotations_
HRESULT DirectX::GetMetadataFromDDSMemoryEx(
const void* pSource,
size_t size,
DDS_FLAGS flags,
TexMetadata& metadata,
DDSMetaData* ddPixelFormat) noexcept
{
if (!pSource || size == 0)
return E_INVALIDARG;
uint32_t convFlags = 0;
return DecodeDDSHeader(pSource, size, flags, metadata, convFlags);
return DecodeDDSHeader(pSource, size, flags, metadata, ddPixelFormat, convFlags);
}
_Use_decl_annotations_
@ -1645,6 +1674,16 @@ HRESULT DirectX::GetMetadataFromDDSFile(
const wchar_t* szFile,
DDS_FLAGS flags,
TexMetadata& metadata) noexcept
{
return GetMetadataFromDDSFileEx(szFile, flags, metadata, nullptr);
}
_Use_decl_annotations_
HRESULT DirectX::GetMetadataFromDDSFileEx(
const wchar_t* szFile,
DDS_FLAGS flags,
TexMetadata& metadata,
DDSMetaData* ddPixelFormat) noexcept
{
if (!szFile)
return E_INVALIDARG;
@ -1720,7 +1759,7 @@ HRESULT DirectX::GetMetadataFromDDSFile(
#endif
uint32_t convFlags = 0;
return DecodeDDSHeader(header, headerLen, flags, metadata, convFlags);
return DecodeDDSHeader(header, headerLen, flags, metadata, ddPixelFormat, convFlags);
}
@ -1734,6 +1773,18 @@ HRESULT DirectX::LoadFromDDSMemory(
DDS_FLAGS flags,
TexMetadata* metadata,
ScratchImage& image) noexcept
{
return LoadFromDDSMemoryEx(pSource, size, flags, metadata, nullptr, image);
}
_Use_decl_annotations_
HRESULT DirectX::LoadFromDDSMemoryEx(
const void* pSource,
size_t size,
DDS_FLAGS flags,
TexMetadata* metadata,
DDSMetaData* ddPixelFormat,
ScratchImage& image) noexcept
{
if (!pSource || size == 0)
return E_INVALIDARG;
@ -1742,7 +1793,7 @@ HRESULT DirectX::LoadFromDDSMemory(
uint32_t convFlags = 0;
TexMetadata mdata;
HRESULT hr = DecodeDDSHeader(pSource, size, flags, mdata, convFlags);
HRESULT hr = DecodeDDSHeader(pSource, size, flags, mdata, ddPixelFormat, convFlags);
if (FAILED(hr))
return hr;
@ -1806,6 +1857,17 @@ HRESULT DirectX::LoadFromDDSFile(
DDS_FLAGS flags,
TexMetadata* metadata,
ScratchImage& image) noexcept
{
return LoadFromDDSFileEx(szFile, flags, metadata, nullptr, image);
}
_Use_decl_annotations_
HRESULT DirectX::LoadFromDDSFileEx(
const wchar_t* szFile,
DDS_FLAGS flags,
TexMetadata* metadata,
DDSMetaData* ddPixelFormat,
ScratchImage& image) noexcept
{
if (!szFile)
return E_INVALIDARG;
@ -1882,7 +1944,7 @@ HRESULT DirectX::LoadFromDDSFile(
uint32_t convFlags = 0;
TexMetadata mdata;
HRESULT hr = DecodeDDSHeader(header, headerLen, flags, mdata, convFlags);
HRESULT hr = DecodeDDSHeader(header, headerLen, flags, mdata, ddPixelFormat, convFlags);
if (FAILED(hr))
return hr;