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DirectXTexConvert.cpp
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DirectXTexConvert.cpp
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//-------------------------------------------------------------------------------------
// DirectXTexConvert.cpp
//
// DirectX Texture Library - Image conversion
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// http://go.microsoft.com/fwlink/?LinkId=248926
//-------------------------------------------------------------------------------------
#include "directxtexp.h"
using namespace DirectX::PackedVector;
using Microsoft::WRL::ComPtr;
namespace
{
#if DIRECTX_MATH_VERSION < 306
inline float round_to_nearest( float x )
{
// Round to nearest (even)
float i = floorf(x);
x -= i;
if(x < 0.5f)
return i;
if(x > 0.5f)
return i + 1.f;
float int_part;
modff( i / 2.f, &int_part );
if ( (2.f*int_part) == i )
{
return i;
}
return i + 1.f;
}
#endif
inline uint32_t FloatTo7e3(float Value)
{
uint32_t IValue = reinterpret_cast<uint32_t *>(&Value)[0];
if ( IValue & 0x80000000U )
{
// Positive only
return 0;
}
else if (IValue > 0x41FF73FFU)
{
// The number is too large to be represented as a 7e3. Saturate.
return 0x3FFU;
}
else
{
if (IValue < 0x3E800000U)
{
// The number is too small to be represented as a normalized 7e3.
// Convert it to a denormalized value.
uint32_t Shift = 125U - (IValue >> 23U);
IValue = (0x800000U | (IValue & 0x7FFFFFU)) >> Shift;
}
else
{
// Rebias the exponent to represent the value as a normalized 7e3.
IValue += 0xC2000000U;
}
return ((IValue + 0x7FFFU + ((IValue >> 16U) & 1U)) >> 16U)&0x3FFU;
}
}
inline float FloatFrom7e3( uint32_t Value )
{
uint32_t Mantissa = (uint32_t)(Value & 0x7F);
uint32_t Exponent = (Value & 0x380);
if (Exponent != 0) // The value is normalized
{
Exponent = (uint32_t)((Value >> 7) & 0x7);
}
else if (Mantissa != 0) // The value is denormalized
{
// Normalize the value in the resulting float
Exponent = 1;
do
{
Exponent--;
Mantissa <<= 1;
} while ((Mantissa & 0x80) == 0);
Mantissa &= 0x7F;
}
else // The value is zero
{
Exponent = (uint32_t)-124;
}
uint32_t Result = ((Exponent + 124) << 23) | // Exponent
(Mantissa << 16); // Mantissa
return reinterpret_cast<float*>(&Result)[0];
}
inline uint32_t FloatTo6e4(float Value)
{
uint32_t IValue = reinterpret_cast<uint32_t *>(&Value)[0];
if ( IValue & 0x80000000U )
{
// Positive only
return 0;
}
else if (IValue > 0x43FEFFFFU)
{
// The number is too large to be represented as a 6e4. Saturate.
return 0x3FFU;
}
else
{
if (IValue < 0x3C800000U)
{
// The number is too small to be represented as a normalized 6e4.
// Convert it to a denormalized value.
uint32_t Shift = 121U - (IValue >> 23U);
IValue = (0x800000U | (IValue & 0x7FFFFFU)) >> Shift;
}
else
{
// Rebias the exponent to represent the value as a normalized 6e4.
IValue += 0xC4000000U;
}
return ((IValue + 0xFFFFU + ((IValue >> 17U) & 1U)) >> 17U)&0x3FFU;
}
}
inline float FloatFrom6e4( uint32_t Value )
{
uint32_t Mantissa = (uint32_t)(Value & 0x3F);
uint32_t Exponent = (Value & 0x3C0);
if (Exponent != 0) // The value is normalized
{
Exponent = (uint32_t)((Value >> 6) & 0xF);
}
else if (Mantissa != 0) // The value is denormalized
{
// Normalize the value in the resulting float
Exponent = 1;
do
{
Exponent--;
Mantissa <<= 1;
} while ((Mantissa & 0x40) == 0);
Mantissa &= 0x3F;
}
else // The value is zero
{
Exponent = (uint32_t)-120;
}
uint32_t Result = ((Exponent + 120) << 23) | // Exponent
(Mantissa << 17); // Mantissa
return reinterpret_cast<float*>(&Result)[0];
}
};
namespace DirectX
{
static const XMVECTORF32 g_Grayscale = { 0.2125f, 0.7154f, 0.0721f, 0.0f };
static const XMVECTORF32 g_HalfMin = { -65504.f, -65504.f, -65504.f, -65504.f };
static const XMVECTORF32 g_HalfMax = { 65504.f, 65504.f, 65504.f, 65504.f };
static const XMVECTORF32 g_8BitBias = { 0.5f/255.f, 0.5f/255.f, 0.5f/255.f, 0.5f/255.f };
//-------------------------------------------------------------------------------------
// Copies an image row with optional clearing of alpha value to 1.0
// (can be used in place as well) otherwise copies the image row unmodified.
//-------------------------------------------------------------------------------------
void _CopyScanline(_When_(pDestination == pSource, _Inout_updates_bytes_(outSize))
_When_(pDestination != pSource, _Out_writes_bytes_(outSize))
LPVOID pDestination, _In_ size_t outSize,
_In_reads_bytes_(inSize) LPCVOID pSource, _In_ size_t inSize,
_In_ DXGI_FORMAT format, _In_ DWORD flags)
{
assert( pDestination && outSize > 0 );
assert( pSource && inSize > 0 );
assert( IsValid(format) && !IsPalettized(format) );
if ( flags & TEXP_SCANLINE_SETALPHA )
{
switch( static_cast<int>(format) )
{
//-----------------------------------------------------------------------------
case DXGI_FORMAT_R32G32B32A32_TYPELESS:
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R32G32B32A32_UINT:
case DXGI_FORMAT_R32G32B32A32_SINT:
if ( inSize >= 16 && outSize >= 16 )
{
uint32_t alpha;
if ( format == DXGI_FORMAT_R32G32B32A32_FLOAT )
alpha = 0x3f800000;
else if ( format == DXGI_FORMAT_R32G32B32A32_SINT )
alpha = 0x7fffffff;
else
alpha = 0xffffffff;
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*> (pDestination);
for( size_t count = 0; count < ( outSize - 15 ); count += 16 )
{
dPtr += 3;
*(dPtr++) = alpha;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 15 ); count += 16 )
{
*(dPtr++) = *(sPtr++);
*(dPtr++) = *(sPtr++);
*(dPtr++) = *(sPtr++);
*(dPtr++) = alpha;
++sPtr;
}
}
}
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_R16G16B16A16_TYPELESS:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
case DXGI_FORMAT_R16G16B16A16_UNORM:
case DXGI_FORMAT_R16G16B16A16_UINT:
case DXGI_FORMAT_R16G16B16A16_SNORM:
case DXGI_FORMAT_R16G16B16A16_SINT:
case DXGI_FORMAT_Y416:
if ( inSize >= 8 && outSize >= 8 )
{
uint16_t alpha;
if ( format == DXGI_FORMAT_R16G16B16A16_FLOAT )
alpha = 0x3c00;
else if ( format == DXGI_FORMAT_R16G16B16A16_SNORM || format == DXGI_FORMAT_R16G16B16A16_SINT )
alpha = 0x7fff;
else
alpha = 0xffff;
if ( pDestination == pSource )
{
uint16_t *dPtr = reinterpret_cast<uint16_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 7 ); count += 8 )
{
dPtr += 3;
*(dPtr++) = alpha;
}
}
else
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint16_t * __restrict dPtr = reinterpret_cast<uint16_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 7 ); count += 8 )
{
*(dPtr++) = *(sPtr++);
*(dPtr++) = *(sPtr++);
*(dPtr++) = *(sPtr++);
*(dPtr++) = alpha;
++sPtr;
}
}
}
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case DXGI_FORMAT_Y410:
case XBOX_DXGI_FORMAT_R10G10B10_7E3_A2_FLOAT:
case XBOX_DXGI_FORMAT_R10G10B10_6E4_A2_FLOAT:
case XBOX_DXGI_FORMAT_R10G10B10_SNORM_A2_UNORM:
if ( inSize >= 4 && outSize >= 4 )
{
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 3 ); count += 4 )
{
*dPtr |= 0xC0000000;
++dPtr;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 3 ); count += 4 )
{
*(dPtr++) = *(sPtr++) | 0xC0000000;
}
}
}
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_R8G8B8A8_UINT:
case DXGI_FORMAT_R8G8B8A8_SNORM:
case DXGI_FORMAT_R8G8B8A8_SINT:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_AYUV:
if ( inSize >= 4 && outSize >= 4 )
{
const uint32_t alpha = ( format == DXGI_FORMAT_R8G8B8A8_SNORM || format == DXGI_FORMAT_R8G8B8A8_SINT ) ? 0x7f000000 : 0xff000000;
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 3 ); count += 4 )
{
uint32_t t = *dPtr & 0xFFFFFF;
t |= alpha;
*(dPtr++) = t;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 3 ); count += 4 )
{
uint32_t t = *(sPtr++) & 0xFFFFFF;
t |= alpha;
*(dPtr++) = t;
}
}
}
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_B5G5R5A1_UNORM:
if ( inSize >= 2 && outSize >= 2 )
{
if ( pDestination == pSource )
{
uint16_t *dPtr = reinterpret_cast<uint16_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 1 ); count += 2 )
{
*(dPtr++) |= 0x8000;
}
}
else
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint16_t * __restrict dPtr = reinterpret_cast<uint16_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 1 ); count += 2 )
{
*(dPtr++) = *(sPtr++) | 0x8000;
}
}
}
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_A8_UNORM:
memset( pDestination, 0xff, outSize );
return;
//-----------------------------------------------------------------------------
case DXGI_FORMAT_B4G4R4A4_UNORM:
if ( inSize >= 2 && outSize >= 2 )
{
if ( pDestination == pSource )
{
uint16_t *dPtr = reinterpret_cast<uint16_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 1 ); count += 2 )
{
*(dPtr++) |= 0xF000;
}
}
else
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint16_t * __restrict dPtr = reinterpret_cast<uint16_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 1 ); count += 2 )
{
*(dPtr++) = *(sPtr++) | 0xF000;
}
}
}
return;
}
}
// Fall-through case is to just use memcpy (assuming this is not an in-place operation)
if ( pDestination == pSource )
return;
size_t size = std::min<size_t>( outSize, inSize );
memcpy_s( pDestination, outSize, pSource, size );
}
//-------------------------------------------------------------------------------------
// Swizzles (RGB <-> BGR) an image row with optional clearing of alpha value to 1.0
// (can be used in place as well) otherwise copies the image row unmodified.
//-------------------------------------------------------------------------------------
_Use_decl_annotations_
void _SwizzleScanline( LPVOID pDestination, size_t outSize, LPCVOID pSource, size_t inSize, DXGI_FORMAT format, DWORD flags )
{
assert( pDestination && outSize > 0 );
assert( pSource && inSize > 0 );
assert( IsValid(format) && !IsPlanar(format) && !IsPalettized(format) );
switch( static_cast<int>(format) )
{
//---------------------------------------------------------------------------------
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case XBOX_DXGI_FORMAT_R10G10B10_SNORM_A2_UNORM:
if ( inSize >= 4 && outSize >= 4 )
{
if ( flags & TEXP_SCANLINE_LEGACY )
{
// Swap Red (R) and Blue (B) channel (used for D3DFMT_A2R10G10B10 legacy sources)
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 3 ); count += 4 )
{
uint32_t t = *dPtr;
uint32_t t1 = (t & 0x3ff00000) >> 20;
uint32_t t2 = (t & 0x000003ff) << 20;
uint32_t t3 = (t & 0x000ffc00);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xC0000000 : (t & 0xC0000000);
*(dPtr++) = t1 | t2 | t3 | ta;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 3 ); count += 4 )
{
uint32_t t = *(sPtr++);
uint32_t t1 = (t & 0x3ff00000) >> 20;
uint32_t t2 = (t & 0x000003ff) << 20;
uint32_t t3 = (t & 0x000ffc00);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xC0000000 : (t & 0xC0000000);
*(dPtr++) = t1 | t2 | t3 | ta;
}
}
return;
}
}
break;
//---------------------------------------------------------------------------------
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8X8_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8X8_TYPELESS:
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
if ( inSize >= 4 && outSize >= 4 )
{
// Swap Red (R) and Blue (B) channels (used to convert from DXGI 1.1 BGR formats to DXGI 1.0 RGB)
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 3 ); count += 4 )
{
uint32_t t = *dPtr;
uint32_t t1 = (t & 0x00ff0000) >> 16;
uint32_t t2 = (t & 0x000000ff) << 16;
uint32_t t3 = (t & 0x0000ff00);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xff000000 : (t & 0xFF000000);
*(dPtr++) = t1 | t2 | t3 | ta;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 3 ); count += 4 )
{
uint32_t t = *(sPtr++);
uint32_t t1 = (t & 0x00ff0000) >> 16;
uint32_t t2 = (t & 0x000000ff) << 16;
uint32_t t3 = (t & 0x0000ff00);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xff000000 : (t & 0xFF000000);
*(dPtr++) = t1 | t2 | t3 | ta;
}
}
return;
}
break;
//---------------------------------------------------------------------------------
case DXGI_FORMAT_YUY2:
if ( inSize >= 4 && outSize >= 4 )
{
if ( flags & TEXP_SCANLINE_LEGACY )
{
// Reorder YUV components (used to convert legacy UYVY -> YUY2)
if ( pDestination == pSource )
{
uint32_t *dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t count = 0; count < ( outSize - 3 ); count += 4 )
{
uint32_t t = *dPtr;
uint32_t t1 = (t & 0x000000ff) << 8;
uint32_t t2 = (t & 0x0000ff00) >> 8;
uint32_t t3 = (t & 0x00ff0000) << 8;
uint32_t t4 = (t & 0xff000000) >> 8;
*(dPtr++) = t1 | t2 | t3 | t4;
}
}
else
{
const uint32_t * __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
size_t size = std::min<size_t>( outSize, inSize );
for( size_t count = 0; count < ( size - 3 ); count += 4 )
{
uint32_t t = *(sPtr++);
uint32_t t1 = (t & 0x000000ff) << 8;
uint32_t t2 = (t & 0x0000ff00) >> 8;
uint32_t t3 = (t & 0x00ff0000) << 8;
uint32_t t4 = (t & 0xff000000) >> 8;
*(dPtr++) = t1 | t2 | t3 | t4;
}
}
return;
}
}
break;
}
// Fall-through case is to just use memcpy (assuming this is not an in-place operation)
if ( pDestination == pSource )
return;
size_t size = std::min<size_t>( outSize, inSize );
memcpy_s( pDestination, outSize, pSource, size );
}
//-------------------------------------------------------------------------------------
// Converts an image row with optional clearing of alpha value to 1.0
// Returns true if supported, false if expansion case not supported
//-------------------------------------------------------------------------------------
_Use_decl_annotations_
bool _ExpandScanline( LPVOID pDestination, size_t outSize, DXGI_FORMAT outFormat,
LPCVOID pSource, size_t inSize, DXGI_FORMAT inFormat, DWORD flags )
{
assert( pDestination && outSize > 0 );
assert( pSource && inSize > 0 );
assert( IsValid(outFormat) && !IsPlanar(outFormat) && !IsPalettized(outFormat) );
assert( IsValid(inFormat) && !IsPlanar(inFormat) && !IsPalettized(inFormat) );
switch( inFormat )
{
case DXGI_FORMAT_B5G6R5_UNORM:
if ( outFormat != DXGI_FORMAT_R8G8B8A8_UNORM )
return false;
// DXGI_FORMAT_B5G6R5_UNORM -> DXGI_FORMAT_R8G8B8A8_UNORM
if ( inSize >= 2 && outSize >= 4 )
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t ocount = 0, icount = 0; ( ( icount < ( inSize - 1 ) ) && ( ocount < ( outSize - 3 ) ) ); icount += 2, ocount += 4 )
{
uint16_t t = *(sPtr++);
uint32_t t1 = ((t & 0xf800) >> 8) | ((t & 0xe000) >> 13);
uint32_t t2 = ((t & 0x07e0) << 5) | ((t & 0x0600) >> 5);
uint32_t t3 = ((t & 0x001f) << 19) | ((t & 0x001c) << 14);
*(dPtr++) = t1 | t2 | t3 | 0xff000000;
}
return true;
}
return false;
case DXGI_FORMAT_B5G5R5A1_UNORM:
if ( outFormat != DXGI_FORMAT_R8G8B8A8_UNORM )
return false;
// DXGI_FORMAT_B5G5R5A1_UNORM -> DXGI_FORMAT_R8G8B8A8_UNORM
if ( inSize >= 2 && outSize >= 4 )
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t ocount = 0, icount = 0; ( ( icount < ( inSize - 1 ) ) && ( ocount < ( outSize - 3 ) ) ); icount += 2, ocount += 4 )
{
uint16_t t = *(sPtr++);
uint32_t t1 = ((t & 0x7c00) >> 7) | ((t & 0x7000) >> 12);
uint32_t t2 = ((t & 0x03e0) << 6) | ((t & 0x0380) << 1);
uint32_t t3 = ((t & 0x001f) << 19) | ((t & 0x001c) << 14);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xff000000 : ((t & 0x8000) ? 0xff000000 : 0);
*(dPtr++) = t1 | t2 | t3 | ta;
}
return true;
}
return false;
case DXGI_FORMAT_B4G4R4A4_UNORM:
if ( outFormat != DXGI_FORMAT_R8G8B8A8_UNORM )
return false;
// DXGI_FORMAT_B4G4R4A4_UNORM -> DXGI_FORMAT_R8G8B8A8_UNORM
if ( inSize >= 2 && outSize >= 4 )
{
const uint16_t * __restrict sPtr = reinterpret_cast<const uint16_t*>(pSource);
uint32_t * __restrict dPtr = reinterpret_cast<uint32_t*>(pDestination);
for( size_t ocount = 0, icount = 0; ( ( icount < ( inSize - 1 ) ) && ( ocount < ( outSize - 3 ) ) ); icount += 2, ocount += 4 )
{
uint16_t t = *(sPtr++);
uint32_t t1 = ((t & 0x0f00) >> 4) | ((t & 0x0f00) >> 8);
uint32_t t2 = ((t & 0x00f0) << 8) | ((t & 0x00f0) << 4);
uint32_t t3 = ((t & 0x000f) << 20) | ((t & 0x000f) << 16);
uint32_t ta = ( flags & TEXP_SCANLINE_SETALPHA ) ? 0xff000000 : (((t & 0xf000) << 16) | ((t & 0xf000) << 12));
*(dPtr++) = t1 | t2 | t3 | ta;
}
return true;
}
return false;
}
return false;
}
//-------------------------------------------------------------------------------------
// Loads an image row into standard RGBA XMVECTOR (aligned) array
//-------------------------------------------------------------------------------------
#define LOAD_SCANLINE( type, func )\
if ( size >= sizeof(type) )\
{\
const type * __restrict sPtr = reinterpret_cast<const type*>(pSource);\
for( size_t icount = 0; icount < ( size - sizeof(type) + 1 ); icount += sizeof(type) )\
{\
if ( dPtr >= ePtr ) break;\
*(dPtr++) = func( sPtr++ );\
}\
return true;\
}\
return false;
#define LOAD_SCANLINE3( type, func, defvec )\
if ( size >= sizeof(type) )\
{\
const type * __restrict sPtr = reinterpret_cast<const type*>(pSource);\
for( size_t icount = 0; icount < ( size - sizeof(type) + 1 ); icount += sizeof(type) )\
{\
XMVECTOR v = func( sPtr++ );\
if ( dPtr >= ePtr ) break;\
*(dPtr++) = XMVectorSelect( defvec, v, g_XMSelect1110 );\
}\
return true;\
}\
return false;
#define LOAD_SCANLINE2( type, func, defvec )\
if ( size >= sizeof(type) )\
{\
const type * __restrict sPtr = reinterpret_cast<const type*>(pSource);\
for( size_t icount = 0; icount < ( size - sizeof(type) + 1 ); icount += sizeof(type) )\
{\
XMVECTOR v = func( sPtr++ );\
if ( dPtr >= ePtr ) break;\
*(dPtr++) = XMVectorSelect( defvec, v, g_XMSelect1100 );\
}\
return true;\
}\
return false;
#pragma warning(suppress: 6101)
_Use_decl_annotations_ bool _LoadScanline( XMVECTOR* pDestination, size_t count,
LPCVOID pSource, size_t size, DXGI_FORMAT format )
{
assert( pDestination && count > 0 && (((uintptr_t)pDestination & 0xF) == 0) );
assert( pSource && size > 0 );
assert( IsValid(format) && !IsTypeless(format, false) && !IsCompressed(format) && !IsPlanar(format) && !IsPalettized(format) );
XMVECTOR* __restrict dPtr = pDestination;
if ( !dPtr )
return false;
const XMVECTOR* ePtr = pDestination + count;
switch( static_cast<int>(format) )
{
case DXGI_FORMAT_R32G32B32A32_FLOAT:
{
size_t msize = (size > (sizeof(XMVECTOR)*count)) ? (sizeof(XMVECTOR)*count) : size;
memcpy_s( dPtr, sizeof(XMVECTOR)*count, pSource, msize );
}
return true;
case DXGI_FORMAT_R32G32B32A32_UINT:
LOAD_SCANLINE( XMUINT4, XMLoadUInt4 )
case DXGI_FORMAT_R32G32B32A32_SINT:
LOAD_SCANLINE( XMINT4, XMLoadSInt4 )
case DXGI_FORMAT_R32G32B32_FLOAT:
LOAD_SCANLINE3( XMFLOAT3, XMLoadFloat3, g_XMIdentityR3 )
case DXGI_FORMAT_R32G32B32_UINT:
LOAD_SCANLINE3( XMUINT3, XMLoadUInt3, g_XMIdentityR3 )
case DXGI_FORMAT_R32G32B32_SINT:
LOAD_SCANLINE3( XMINT3, XMLoadSInt3, g_XMIdentityR3 )
case DXGI_FORMAT_R16G16B16A16_FLOAT:
LOAD_SCANLINE( XMHALF4, XMLoadHalf4 )
case DXGI_FORMAT_R16G16B16A16_UNORM:
LOAD_SCANLINE( XMUSHORTN4, XMLoadUShortN4 )
case DXGI_FORMAT_R16G16B16A16_UINT:
LOAD_SCANLINE( XMUSHORT4, XMLoadUShort4 )
case DXGI_FORMAT_R16G16B16A16_SNORM:
LOAD_SCANLINE( XMSHORTN4, XMLoadShortN4 )
case DXGI_FORMAT_R16G16B16A16_SINT:
LOAD_SCANLINE( XMSHORT4, XMLoadShort4 )
case DXGI_FORMAT_R32G32_FLOAT:
LOAD_SCANLINE2( XMFLOAT2, XMLoadFloat2, g_XMIdentityR3 )
case DXGI_FORMAT_R32G32_UINT:
LOAD_SCANLINE2( XMUINT2, XMLoadUInt2, g_XMIdentityR3 )
case DXGI_FORMAT_R32G32_SINT:
LOAD_SCANLINE2( XMINT2, XMLoadSInt2, g_XMIdentityR3 )
case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
{
const size_t psize = sizeof(float)+sizeof(uint32_t);
if ( size >= psize )
{
const float * sPtr = reinterpret_cast<const float*>(pSource);
for( size_t icount = 0; icount < ( size - psize + 1 ); icount += psize )
{
const uint8_t* ps8 = reinterpret_cast<const uint8_t*>( &sPtr[1] );
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( sPtr[0], static_cast<float>( *ps8 ), 0.f, 1.f );
sPtr += 2;
}
return true;
}
}
return false;
case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
{
const size_t psize = sizeof(float)+sizeof(uint32_t);
if ( size >= psize )
{
const float * sPtr = reinterpret_cast<const float*>(pSource);
for( size_t icount = 0; icount < ( size - psize + 1 ); icount += psize )
{
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( sPtr[0], 0.f /* typeless component assumed zero */, 0.f, 1.f );
sPtr += 2;
}
return true;
}
}
return false;
case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
{
const size_t psize = sizeof(float)+sizeof(uint32_t);
if ( size >= psize )
{
const float * sPtr = reinterpret_cast<const float*>(pSource);
for( size_t icount = 0; icount < ( size - psize + 1 ); icount += psize )
{
const uint8_t* pg8 = reinterpret_cast<const uint8_t*>( &sPtr[1] );
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( 0.f /* typeless component assumed zero */, static_cast<float>( *pg8 ), 0.f, 1.f );
sPtr += 2;
}
return true;
}
}
return false;
case DXGI_FORMAT_R10G10B10A2_UNORM:
LOAD_SCANLINE( XMUDECN4, XMLoadUDecN4 );
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
#if DIRECTX_MATH_VERSION >= 306
LOAD_SCANLINE( XMUDECN4, XMLoadUDecN4_XR );
#else
if ( size >= sizeof(XMUDECN4) )
{
const XMUDECN4 * __restrict sPtr = reinterpret_cast<const XMUDECN4*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(XMUDECN4) + 1 ); icount += sizeof(XMUDECN4) )
{
if ( dPtr >= ePtr ) break;
int32_t ElementX = sPtr->v & 0x3FF;
int32_t ElementY = (sPtr->v >> 10) & 0x3FF;
int32_t ElementZ = (sPtr->v >> 20) & 0x3FF;
XMVECTORF32 vResult = {
(float)(ElementX - 0x180) / 510.0f,
(float)(ElementY - 0x180) / 510.0f,
(float)(ElementZ - 0x180) / 510.0f,
(float)(sPtr->v >> 30) / 3.0f
};
++sPtr;
*(dPtr++) = vResult.v;
}
return true;
}
return false;
#endif
case DXGI_FORMAT_R10G10B10A2_UINT:
LOAD_SCANLINE( XMUDEC4, XMLoadUDec4 );
case DXGI_FORMAT_R11G11B10_FLOAT:
LOAD_SCANLINE3( XMFLOAT3PK, XMLoadFloat3PK, g_XMIdentityR3 );
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
LOAD_SCANLINE( XMUBYTEN4, XMLoadUByteN4 )
case DXGI_FORMAT_R8G8B8A8_UINT:
LOAD_SCANLINE( XMUBYTE4, XMLoadUByte4 )
case DXGI_FORMAT_R8G8B8A8_SNORM:
LOAD_SCANLINE( XMBYTEN4, XMLoadByteN4 )
case DXGI_FORMAT_R8G8B8A8_SINT:
LOAD_SCANLINE( XMBYTE4, XMLoadByte4 )
case DXGI_FORMAT_R16G16_FLOAT:
LOAD_SCANLINE2( XMHALF2, XMLoadHalf2, g_XMIdentityR3 )
case DXGI_FORMAT_R16G16_UNORM:
LOAD_SCANLINE2( XMUSHORTN2, XMLoadUShortN2, g_XMIdentityR3 )
case DXGI_FORMAT_R16G16_UINT:
LOAD_SCANLINE2( XMUSHORT2, XMLoadUShort2, g_XMIdentityR3 )
case DXGI_FORMAT_R16G16_SNORM:
LOAD_SCANLINE2( XMSHORTN2, XMLoadShortN2, g_XMIdentityR3 )
case DXGI_FORMAT_R16G16_SINT:
LOAD_SCANLINE2( XMSHORT2, XMLoadShort2, g_XMIdentityR3 )
case DXGI_FORMAT_D32_FLOAT:
case DXGI_FORMAT_R32_FLOAT:
if ( size >= sizeof(float) )
{
const float* __restrict sPtr = reinterpret_cast<const float*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(float) + 1 ); icount += sizeof(float) )
{
XMVECTOR v = XMLoadFloat( sPtr++ );
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSelect( g_XMIdentityR3, v, g_XMSelect1000 );
}
return true;
}
return false;
case DXGI_FORMAT_R32_UINT:
if ( size >= sizeof(uint32_t) )
{
const uint32_t* __restrict sPtr = reinterpret_cast<const uint32_t*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(uint32_t) + 1 ); icount += sizeof(uint32_t) )
{
XMVECTOR v = XMLoadInt( sPtr++ );
v = XMConvertVectorUIntToFloat( v, 0 );
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSelect( g_XMIdentityR3, v, g_XMSelect1000 );
}
return true;
}
return false;
case DXGI_FORMAT_R32_SINT:
if ( size >= sizeof(int32_t) )
{
const int32_t * __restrict sPtr = reinterpret_cast<const int32_t*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(int32_t) + 1 ); icount += sizeof(int32_t) )
{
XMVECTOR v = XMLoadInt( reinterpret_cast<const uint32_t*> (sPtr++) );
v = XMConvertVectorIntToFloat( v, 0 );
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSelect( g_XMIdentityR3, v, g_XMSelect1000 );
}
return true;
}
return false;
case DXGI_FORMAT_D24_UNORM_S8_UINT:
if ( size >= sizeof(uint32_t) )
{
const uint32_t * sPtr = reinterpret_cast<const uint32_t*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(uint32_t) + 1 ); icount += sizeof(uint32_t) )
{
float d = static_cast<float>( *sPtr & 0xFFFFFF ) / 16777215.f;
float s = static_cast<float>( ( *sPtr & 0xFF000000 ) >> 24 );
++sPtr;
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( d, s, 0.f, 1.f );
}
return true;
}
return false;
case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
if ( size >= sizeof(uint32_t) )
{
const uint32_t * sPtr = reinterpret_cast<const uint32_t*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(uint32_t) + 1 ); icount += sizeof(uint32_t) )
{
float r = static_cast<float>( *sPtr & 0xFFFFFF ) / 16777215.f;
++sPtr;
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( r, 0.f /* typeless component assumed zero */, 0.f, 1.f );
}
return true;
}
return false;
case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
if ( size >= sizeof(uint32_t) )
{
const uint32_t * sPtr = reinterpret_cast<const uint32_t*>(pSource);
for( size_t icount = 0; icount < ( size - sizeof(uint32_t) + 1 ); icount += sizeof(uint32_t) )
{
float g = static_cast<float>( ( *sPtr & 0xFF000000 ) >> 24 );
++sPtr;
if ( dPtr >= ePtr ) break;
*(dPtr++) = XMVectorSet( 0.f /* typeless component assumed zero */, g, 0.f, 1.f );
}
return true;
}