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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)
{

4
Source/Engine/Tools/TextureTool/TextureTool.cpp
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@@ -76,6 +76,9 @@ void TextureTool::Options::Serialize(SerializeStream& stream, const void* otherO
stream.JKEY("InvertGreenChannel");
stream.Bool(InvertGreenChannel);
stream.JKEY("ReconstructZChannel");
stream.Bool(ReconstructZChannel);
stream.JKEY("Resize");
stream.Bool(Resize);
@@ -134,6 +137,7 @@ void TextureTool::Options::Deserialize(DeserializeStream& stream, ISerializeModi
GenerateMipMaps = JsonTools::GetBool(stream, "GenerateMipMaps", GenerateMipMaps);
FlipY = JsonTools::GetBool(stream, "FlipY", FlipY);
InvertGreenChannel = JsonTools::GetBool(stream, "InvertGreenChannel", InvertGreenChannel);
ReconstructZChannel = JsonTools::GetBool(stream, "ReconstructZChannel", ReconstructZChannel);
Resize = JsonTools::GetBool(stream, "Resize", Resize);
PreserveAlphaCoverage = JsonTools::GetBool(stream, "PreserveAlphaCoverage", PreserveAlphaCoverage);
PreserveAlphaCoverageReference = JsonTools::GetFloat(stream, "PreserveAlphaCoverageReference", PreserveAlphaCoverageReference);

4
Source/Engine/Tools/TextureTool/TextureTool.h
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@@ -61,6 +61,10 @@ API_CLASS(Namespace="FlaxEngine.Tools", Static) class FLAXENGINE_API TextureTool
API_FIELD(Attributes = "EditorOrder(71)")
bool InvertGreenChannel = false;
// True if to invert the green channel on a normal map. Good for OpenGL to DirectX conversion.
API_FIELD(Attributes = "EditorOrder(72)")
bool ReconstructZChannel = false;
// Texture size scale. Allows increasing or decreasing the imported texture resolution. Default is 1.
API_FIELD(Attributes="EditorOrder(80), Limit(0.0001f, 1000.0f, 0.01f)")
float Scale = 1.0f;