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Add options to reconstruct z channel for textures.

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This commit is contained in:
Chandler Cox
2024-10-04 15:29:45 -05:00
parent 1414eb9852
commit 6b10ebdc2c
3 changed files with 45 additions and 0 deletions
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37
Source/Engine/Tools/TextureTool/TextureTool.DirectXTex.cpp
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@@ -829,6 +829,43 @@ bool TextureTool::ImportTextureDirectXTex(ImageType type, const StringView& path
SET_CURRENT_IMG(timage);
}
// Reconstruct Z Channel
if (!keepAsIs & options.ReconstructZChannel)
{
auto& timage = GET_TMP_IMG();
bool isunorm = (DirectX::FormatDataType(currentImage->GetMetadata().format) == DirectX::FORMAT_TYPE_UNORM) != 0;
result = TransformImage(currentImage->GetImages(), currentImage->GetImageCount(), currentImage->GetMetadata(),
[&](DirectX::XMVECTOR* outPixels, const DirectX::XMVECTOR* inPixels, size_t w, size_t y)
{
static const DirectX::XMVECTORU32 s_selectz = { { { DirectX::XM_SELECT_0, DirectX::XM_SELECT_0, DirectX::XM_SELECT_1, DirectX::XM_SELECT_0 } } };
UNREFERENCED_PARAMETER(y);
for (size_t j = 0; j < w; ++j)
{
const DirectX::XMVECTOR value = inPixels[j];
DirectX::XMVECTOR z;
if (isunorm)
{
DirectX::XMVECTOR x2 = DirectX::XMVectorMultiplyAdd(value, DirectX::g_XMTwo, DirectX::g_XMNegativeOne);
x2 = DirectX::XMVectorSqrt(DirectX::XMVectorSubtract(DirectX::g_XMOne, DirectX::XMVector2Dot(x2, x2)));
z = DirectX::XMVectorMultiplyAdd(x2, DirectX::g_XMOneHalf, DirectX::g_XMOneHalf);
}
else
{
z = DirectX::XMVectorSqrt(DirectX::XMVectorSubtract(DirectX::g_XMOne, DirectX::XMVector2Dot(value, value)));
}
outPixels[j] = XMVectorSelect(value, z, s_selectz);
}
}, timage);
if (FAILED(result))
{
errorMsg = String::Format(TEXT("Cannot reconstruct z channel in texture, error: {0:x}"), static_cast<uint32>(result));
return true;
}
SET_CURRENT_IMG(timage);
}
// Generate mip maps chain
if (!keepAsIs && useMipLevels && options.GenerateMipMaps)
{