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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#include "hsTypes.h"
#include "plBumpMapGen.h"
#include "plMipmap.h"
#include "hsFastMath.h"
#include "hsCodecManager.h"
plMipmap* plBumpMapGen::MakeCompatibleBlank(const plMipmap* src)
{
return TRACKED_NEW plMipmap(src->GetWidth(), src->GetHeight(), plMipmap::kARGB32Config, 1, plMipmap::kUncompressed, plMipmap::UncompressedInfo::kRGB8888);
}
plMipmap* plBumpMapGen::TwosCompToBias(plMipmap* dst)
{
UInt8* pDst = (UInt8*)dst->GetAddr32(0, 0);
const int width = dst->GetWidth();
const int height = dst->GetHeight();
int i;
int j;
for( j = 0; j < height; j++ )
{
for( i = 0; i < width; i++ )
{
*pDst++ += 128;
*pDst++ += 128;
*pDst++ += 128;
pDst++;
}
}
return dst;
}
plMipmap* plBumpMapGen::QikBumpMap(plMipmap* dst, const plMipmap* origSrc, UInt32 mask, UInt32 flags)
{
const plMipmap* src = origSrc;
if( !dst )
{
dst = MakeCompatibleBlank(src);
}
else if( (src->GetWidth() != dst->GetWidth()) || (src->GetHeight() != dst->GetHeight()) )
{
plMipmap* newSrc = src->Clone();
// Note here that ResizeNicely currently does a point sample if scaling up (and about
// as expensive a point sample as possible without using transcendental functions).
// This might be correctable by calling plMipmap::Filter after the upscale. Or I
// could just assert that dst dimensions match src dimensions.
newSrc->ResizeNicely((UInt16)(dst->GetWidth()), (UInt16)(dst->GetHeight()), plMipmap::kDefaultFilter);
src = newSrc;
}
if( src->IsCompressed() )
{
plMipmap* newSrc = hsCodecManager::Instance().CreateUncompressedMipmap(const_cast<plMipmap*>(src), hsCodecManager::k32BitDepth);
src = newSrc;
}
dst->SetCurrLevel(0);
const Int32 divis = ((mask >> 0) & 0xff)
+((mask >> 8) & 0xff)
+((mask >> 16) & 0xff);
const int width = src->GetWidth();
const int height = src->GetHeight();
const int stride = src->GetRowBytes(); // Should be width * 4;
const UInt32 alphaOr = flags & kScaleHgtByAlpha ? 0 : 0xff;
UInt32* pDst = dst->GetAddr32(0, 0);
UInt32* pBase = src->GetAddr32(0, 0);
UInt32* pSrc = pBase;
int i;
int j;
for( j = 0; j < height; j++ )
{
UInt32* pUp = j ? pSrc - width : pBase;
UInt32* pDn = j < height-1 ? pSrc + width : pBase;
for( i = 0; i < width; i++ )
{
UInt32* pLf = i ? pSrc - 1 : pSrc + width-1;
UInt32* pRt = i < width-1 ? pSrc + 1 : pSrc - width + 1;
UInt32 up = (((*pUp & mask) >> 0) & 0xff)
+ (((*pUp & mask) >> 8) & 0xff)
+ (((*pUp & mask) >> 16) & 0xff);
UInt32 dn = (((*pDn & mask) >> 0) & 0xff)
+ (((*pDn & mask) >> 8) & 0xff)
+ (((*pDn & mask) >> 16) & 0xff);
UInt32 rt = (((*pRt & mask) >> 0) & 0xff)
+ (((*pRt & mask) >> 8) & 0xff)
+ (((*pRt & mask) >> 16) & 0xff);
UInt32 lf = (((*pLf & mask) >> 0) & 0xff)
+ (((*pLf & mask) >> 8) & 0xff)
+ (((*pLf & mask) >> 16) & 0xff);
UInt32 hgt = (((*pSrc & mask) >> 0) & 0xff)
+ (((*pSrc & mask) >> 8) & 0xff)
+ (((*pSrc & mask) >> 16) & 0xff);
if( hgt )
hgt *= 1;
// Multiply by alpha, divide by 255 (so *= float(alpha/255))
// If we aren't scaling by alpha, we just force alpha to be 255.
hgt *= ((*pSrc >> 24) & 0xff) | alphaOr; // scale by alpha
hgt /= 255;
// divis has an implicit 255. For example, all three channels
// are on, so divis = 0xff+0xff+0xff = 3*255.
// So we muliply by 255 and divide by divis, so in this example,
// that means divide by 3.
Int32 delUpDn = dn - up;
delUpDn *= 255;
delUpDn /= divis;
Int32 delRtLf = lf - rt;
delRtLf *= 255;
delRtLf /= divis;
hgt *= 255;
hgt /= divis;
// hgt = 0xff;
*pDst = ((delRtLf & 0xff) << 16)
|((delUpDn & 0xff) << 8)
|((0xff) << 0)
|((hgt & 0xff) << 24);
if( delRtLf )
hgt *= 1;
if( delUpDn )
hgt *= 1;
pUp++;
pDn++;
pSrc++;
pDst++;
}
}
if( flags & kBias )
TwosCompToBias(dst);
if( origSrc != src )
delete src;
return dst;
}
plMipmap* plBumpMapGen::QikNormalMap(plMipmap* dst, const plMipmap* src, UInt32 mask, UInt32 flags, hsScalar smooth)
{
dst = QikBumpMap(dst, src, mask, flags & ~kBias);
const int width = src->GetWidth();
const int height = src->GetHeight();
if( flags & kBubbleTest )
{
Int8* pDst = (Int8*)dst->GetAddr32(0, 0);
Int32 nZ = Int32(smooth * 255.99f);
int i;
int j;
for( j = 0; j < height; j++ )
{
for( i = 0; i < width; i++ )
{
hsScalar x = hsScalar(i) / hsScalar(width-1) * 2.f - 1.f;
hsScalar y = hsScalar(j) / hsScalar(height-1) * 2.f - 1.f;
hsScalar z = 1.f - x*x - y*y;
if( z > 0 )
z = hsSquareRoot(z);
else
{
x = 0;
y = 0;
z = 1.f;
}
z *= smooth;
hsScalar invLen = hsFastMath::InvSqrt(x*x + y*y + z*z) * 127.00f;
pDst[2] = Int8(x * invLen);
pDst[1] = Int8(y * invLen);
pDst[0] = Int8(z * invLen);
pDst += 4;
}
}
}
else
if( flags & kNormalize )
{
Int8* pDst = (Int8*)dst->GetAddr32(0, 0);
Int32 nZ = Int32(smooth * 127.00f);
int i;
int j;
for( j = 0; j < height; j++ )
{
for( i = 0; i < width; i++ )
{
Int32 x = pDst[2];
Int32 y = pDst[1];
if( x )
x *= 1;
if( y )
y *= 1;
hsScalar invLen = hsFastMath::InvSqrt((hsScalar)(x*x + y*y + nZ*nZ)) * 127.0f;
pDst[2] = Int8(x * invLen);
pDst[1] = Int8(y * invLen);
pDst[0] = Int8(nZ * invLen);
pDst += 4;
}
}
}
else if( smooth != 1.f )
{
Int32 divis = 127;
Int32 nZ = 127;
if( (smooth > 1.f) )
{
divis = (Int32)(smooth * 127);
}
else
{
nZ = UInt32(smooth * 127.5f);
}
Int8* pDst = (Int8*)dst->GetAddr32(0, 0);
int i;
int j;
for( j = 0; j < height; j++ )
{
for( i = 0; i < width; i++ )
{
Int32 v;
*pDst = (Int8)nZ;
pDst++;
v = *pDst * 127;
v /= divis;
*pDst = (Int8)(v & 0xff);
pDst++;
v = *pDst * 127;
v /= divis;
*pDst = (Int8)(v & 0xff);
pDst += 2;
}
}
}
if( flags & kBias )
TwosCompToBias(dst);
return dst;
}