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DirectXTex: fixed wide-image issue with CPU Compress

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This commit is contained in:
walbourn_cp 2014-07-10 16:03:13 -07:00
parent f3ef3dcbf5
commit 4233e222e3
3 changed files with 33 additions and 11 deletions
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3
DirectXTex/DirectXTex.h
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@ -67,6 +67,9 @@ namespace DirectX
CP_FLAGS_NONE = 0x0, // Normal operation
CP_FLAGS_LEGACY_DWORD = 0x1, // Assume pitch is DWORD aligned instead of BYTE aligned
CP_FLAGS_PARAGRAPH = 0x2, // Assume pitch is 16-byte aligned instead of BYTE aligned
CP_FLAGS_YMM = 0x4, // Assume pitch is 32-byte aligned instead of BYTE aligned
CP_FLAGS_ZMM = 0x8, // Assume pitch is 64-byte aligned instead of BYTE aligned
CP_FLAGS_PAGE4K = 0x200, // Assume pitch is 4096-byte aligned instead of BYTE aligned
CP_FLAGS_24BPP = 0x10000, // Override with a legacy 24 bits-per-pixel format size
CP_FLAGS_16BPP = 0x20000, // Override with a legacy 16 bits-per-pixel format size
CP_FLAGS_8BPP = 0x40000, // Override with a legacy 8 bits-per-pixel format size

2
DirectXTex/DirectXTexCompress.cpp
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@ -110,7 +110,7 @@ static HRESULT _CompressBC( _In_ const Image& image, _In_ const Image& result, _
uint8_t* dptr = pDest;
size_t ph = std::min<size_t>( 4, image.height - h );
size_t w = 0;
for( size_t count = 0; count < rowPitch; count += sbpp*4, w += 4 )
for( size_t count = 0; count < result.rowPitch; count += blocksize, w += 4 )
{
size_t pw = std::min<size_t>( 4, image.width - w );
assert( pw > 0 && ph > 0 );

39
DirectXTex/DirectXTexUtil.cpp
View File

@ -654,20 +654,39 @@ void ComputePitch( DXGI_FORMAT fmt, size_t width, size_t height,
else
bpp = BitsPerPixel( fmt );
if ( flags & CP_FLAGS_LEGACY_DWORD )
if ( flags & ( CP_FLAGS_LEGACY_DWORD | CP_FLAGS_PARAGRAPH | CP_FLAGS_YMM | CP_FLAGS_ZMM | CP_FLAGS_PAGE4K ) )
{
// Special computation for some incorrectly created DDS files based on
// legacy DirectDraw assumptions about pitch alignment
rowPitch = ( ( width * bpp + 31 ) / 32 ) * sizeof(uint32_t);
slicePitch = rowPitch * height;
}
else if ( flags & CP_FLAGS_PARAGRAPH )
{
rowPitch = ( ( width * bpp + 127 ) / 128 ) * 16;
slicePitch = rowPitch * height;
if ( flags & CP_FLAGS_PAGE4K )
{
rowPitch = ( ( width * bpp + 32767 ) / 32768 ) * 4096;
slicePitch = rowPitch * height;
}
else if ( flags & CP_FLAGS_ZMM )
{
rowPitch = ( ( width * bpp + 511 ) / 512 ) * 64;
slicePitch = rowPitch * height;
}
else if ( flags & CP_FLAGS_YMM )
{
rowPitch = ( ( width * bpp + 255 ) / 256) * 32;
slicePitch = rowPitch * height;
}
else if ( flags & CP_FLAGS_PARAGRAPH )
{
rowPitch = ( ( width * bpp + 127 ) / 128 ) * 16;
slicePitch = rowPitch * height;
}
else // DWORD alignment
{
// Special computation for some incorrectly created DDS files based on
// legacy DirectDraw assumptions about pitch alignment
rowPitch = ( ( width * bpp + 31 ) / 32 ) * sizeof(uint32_t);
slicePitch = rowPitch * height;
}
}
else
{
// Default byte alignment
rowPitch = ( width * bpp + 7 ) / 8;
slicePitch = rowPitch * height;
}