PtexUtils.cpp
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/*
PTEX SOFTWARE
Copyright 2014 Disney Enterprises, Inc. All rights reserved
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* The names "Disney", "Walt Disney Pictures", "Walt Disney Animation
Studios" or the names of its contributors may NOT be used to
endorse or promote products derived from this software without
specific prior written permission from Walt Disney Pictures.
Disclaimer: THIS SOFTWARE IS PROVIDED BY WALT DISNEY PICTURES AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE, NONINFRINGEMENT AND TITLE ARE DISCLAIMED.
IN NO EVENT SHALL WALT DISNEY PICTURES, THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND BASED ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/
#include "PtexPlatform.h"
#include <algorithm>
#include <vector>
#include <stdlib.h>
#include <string.h>
#include "PtexHalf.h"
#include "PtexUtils.h"
PTEX_NAMESPACE_BEGIN
const char* MeshTypeName(MeshType mt)
{
static const char* names[] = { "triangle", "quad" };
const int mtype = static_cast<int>(mt);
if (mtype < 0 || mtype >= int(sizeof(names)/sizeof(const char*)))
return "(invalid mesh type)";
return names[mtype];
}
const char* DataTypeName(DataType dt)
{
static const char* names[] = { "uint8", "uint16", "float16", "float32" };
const int dtype = static_cast<int>(dt);
if (dtype < 0 || dtype >= int(sizeof(names)/sizeof(const char*)))
return "(invalid data type)";
return names[dtype];
}
const char* BorderModeName(BorderMode m)
{
static const char* names[] = { "clamp", "black", "periodic" };
const int mode = static_cast<int>(m);
if (mode < 0 || mode >= int(sizeof(names)/sizeof(const char*)))
return "(invalid border mode)";
return names[mode];
}
const char* EdgeFilterModeName(EdgeFilterMode m)
{
static const char* names[] = { "none", "tanvec" };
const int mode = static_cast<int>(m);
if (mode < 0 || mode >= int(sizeof(names)/sizeof(const char*)))
return "(invalid edge filter mode)";
return names[mode];
}
const char* EdgeIdName(EdgeId eid)
{
static const char* names[] = { "bottom", "right", "top", "left" };
const int edgeid = static_cast<int>(eid);
if (edgeid < 0 || edgeid >= int(sizeof(names)/sizeof(const char*)))
return "(invalid edge id)";
return names[edgeid];
}
const char* MetaDataTypeName(MetaDataType mdt)
{
static const char* names[] = { "string", "int8", "int16", "int32", "float", "double" };
const int mdtype = static_cast<int>(mdt);
if (mdtype < 0 || mdtype >= int(sizeof(names)/sizeof(const char*)))
return "(invalid meta data type)";
return names[mdtype];
}
namespace {
template<typename DST, typename SRC>
void ConvertArrayClamped(DST* dst, SRC* src, int numChannels, float scale, float round=0)
{
for (int i = 0; i < numChannels; i++)
dst[i] = DST(PtexUtils::clamp(src[i], 0.0f, 1.0f) * scale + round);
}
template<typename DST, typename SRC>
void ConvertArray(DST* dst, SRC* src, int numChannels, float scale, float round=0)
{
for (int i = 0; i < numChannels; i++)
dst[i] = DST((float)src[i] * scale + round);
}
}
void ConvertToFloat(float* dst, const void* src, DataType dt, int numChannels)
{
switch (dt) {
case dt_uint8: ConvertArray(dst, static_cast<const uint8_t*>(src), numChannels, 1.f/255.f); break;
case dt_uint16: ConvertArray(dst, static_cast<const uint16_t*>(src), numChannels, 1.f/65535.f); break;
case dt_half: ConvertArray(dst, static_cast<const PtexHalf*>(src), numChannels, 1.f); break;
case dt_float: memcpy(dst, src, sizeof(float)*numChannels); break;
}
}
void ConvertFromFloat(void* dst, const float* src, DataType dt, int numChannels)
{
switch (dt) {
case dt_uint8: ConvertArrayClamped(static_cast<uint8_t*>(dst), src, numChannels, 255.0, 0.5); break;
case dt_uint16: ConvertArrayClamped(static_cast<uint16_t*>(dst), src, numChannels, 65535.0, 0.5); break;
case dt_half: ConvertArray(static_cast<PtexHalf*>(dst), src, numChannels, 1.0); break;
case dt_float: memcpy(dst, src, sizeof(float)*numChannels); break;
}
}
namespace PtexUtils {
bool isConstant(const void* data, int stride, int ures, int vres,
int pixelSize)
{
int rowlen = pixelSize * ures;
const char* p = (const char*) data + stride;
// compare each row with the first
for (int i = 1; i < vres; i++, p += stride)
if (0 != memcmp(data, p, rowlen)) return 0;
// make sure first row is constant
p = (const char*) data + pixelSize;
for (int i = 1; i < ures; i++, p += pixelSize)
if (0 != memcmp(data, p, pixelSize)) return 0;
return 1;
}
namespace {
template<typename T>
inline void interleave(const T* src, int sstride, int uw, int vw,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
// for each channel
for (T* dstend = dst + nchan; dst != dstend; dst++) {
// for each row
T* drow = dst;
for (const T* rowend = src + sstride*vw; src != rowend;
src += sstride, drow += dstride) {
// copy each pixel across the row
T* dp = drow;
for (const T* sp = src, * end = sp + uw; sp != end; dp += nchan)
*dp = *sp++;
}
}
}
}
void interleave(const void* src, int sstride, int uw, int vw,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: interleave((const uint8_t*) src, sstride, uw, vw,
(uint8_t*) dst, dstride, nchan); break;
case dt_half:
case dt_uint16: interleave((const uint16_t*) src, sstride, uw, vw,
(uint16_t*) dst, dstride, nchan); break;
case dt_float: interleave((const float*) src, sstride, uw, vw,
(float*) dst, dstride, nchan); break;
}
}
namespace {
template<typename T>
inline void deinterleave(const T* src, int sstride, int uw, int vw,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
// for each channel
for (const T* srcend = src + nchan; src != srcend; src++) {
// for each row
const T* srow = src;
for (const T* rowend = srow + sstride*vw; srow != rowend;
srow += sstride, dst += dstride) {
// copy each pixel across the row
const T* sp = srow;
for (T* dp = dst, * end = dp + uw; dp != end; sp += nchan)
*dp++ = *sp;
}
}
}
}
void deinterleave(const void* src, int sstride, int uw, int vw,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: deinterleave((const uint8_t*) src, sstride, uw, vw,
(uint8_t*) dst, dstride, nchan); break;
case dt_half:
case dt_uint16: deinterleave((const uint16_t*) src, sstride, uw, vw,
(uint16_t*) dst, dstride, nchan); break;
case dt_float: deinterleave((const float*) src, sstride, uw, vw,
(float*) dst, dstride, nchan); break;
}
}
namespace {
template<typename T>
void encodeDifference(T* data, int size)
{
size /= (int)sizeof(T);
T* p = static_cast<T*>(data), * end = p + size, tmp, prev = 0;
while (p != end) { tmp = prev; prev = *p; *p = T(*p - tmp); p++; }
}
}
void encodeDifference(void* data, int size, DataType dt)
{
switch (dt) {
case dt_uint8: encodeDifference(static_cast<uint8_t*>(data), size); break;
case dt_uint16: encodeDifference(static_cast<uint16_t*>(data), size); break;
default: break; // skip other types
}
}
namespace {
template<typename T>
void decodeDifference(T* data, int size)
{
size /= (int)sizeof(T);
T* p = static_cast<T*>(data), * end = p + size, prev = 0;
while (p != end) { *p = T(*p + prev); prev = *p++; }
}
}
void decodeDifference(void* data, int size, DataType dt)
{
switch (dt) {
case dt_uint8: decodeDifference(static_cast<uint8_t*>(data), size); break;
case dt_uint16: decodeDifference(static_cast<uint16_t*>(data), size); break;
default: break; // skip other types
}
}
namespace {
template<typename T>
inline void reduce(const T* src, int sstride, int uw, int vw,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
int rowlen = uw*nchan;
int srowskip = 2*sstride - rowlen;
int drowskip = dstride - rowlen/2;
for (const T* end = src + vw*sstride; src != end;
src += srowskip, dst += drowskip)
for (const T* rowend = src + rowlen; src != rowend; src += nchan)
for (const T* pixend = src+nchan; src != pixend; src++)
*dst++ = T(quarter(src[0] + src[nchan] + src[sstride] + src[sstride+nchan]));
}
}
void reduce(const void* src, int sstride, int uw, int vw,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: reduce(static_cast<const uint8_t*>(src), sstride, uw, vw,
static_cast<uint8_t*>(dst), dstride, nchan); break;
case dt_half: reduce(static_cast<const PtexHalf*>(src), sstride, uw, vw,
static_cast<PtexHalf*>(dst), dstride, nchan); break;
case dt_uint16: reduce(static_cast<const uint16_t*>(src), sstride, uw, vw,
static_cast<uint16_t*>(dst), dstride, nchan); break;
case dt_float: reduce(static_cast<const float*>(src), sstride, uw, vw,
static_cast<float*>(dst), dstride, nchan); break;
}
}
namespace {
template<typename T>
inline void reduceu(const T* src, int sstride, int uw, int vw,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
int rowlen = uw*nchan;
int srowskip = sstride - rowlen;
int drowskip = dstride - rowlen/2;
for (const T* end = src + vw*sstride; src != end;
src += srowskip, dst += drowskip)
for (const T* rowend = src + rowlen; src != rowend; src += nchan)
for (const T* pixend = src+nchan; src != pixend; src++)
*dst++ = T(halve(src[0] + src[nchan]));
}
}
void reduceu(const void* src, int sstride, int uw, int vw,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: reduceu(static_cast<const uint8_t*>(src), sstride, uw, vw,
static_cast<uint8_t*>(dst), dstride, nchan); break;
case dt_half: reduceu(static_cast<const PtexHalf*>(src), sstride, uw, vw,
static_cast<PtexHalf*>(dst), dstride, nchan); break;
case dt_uint16: reduceu(static_cast<const uint16_t*>(src), sstride, uw, vw,
static_cast<uint16_t*>(dst), dstride, nchan); break;
case dt_float: reduceu(static_cast<const float*>(src), sstride, uw, vw,
static_cast<float*>(dst), dstride, nchan); break;
}
}
namespace {
template<typename T>
inline void reducev(const T* src, int sstride, int uw, int vw,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
int rowlen = uw*nchan;
int srowskip = 2*sstride - rowlen;
int drowskip = dstride - rowlen;
for (const T* end = src + vw*sstride; src != end;
src += srowskip, dst += drowskip)
for (const T* rowend = src + rowlen; src != rowend; src++)
*dst++ = T(halve(src[0] + src[sstride]));
}
}
void reducev(const void* src, int sstride, int uw, int vw,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: reducev(static_cast<const uint8_t*>(src), sstride, uw, vw,
static_cast<uint8_t*>(dst), dstride, nchan); break;
case dt_half: reducev(static_cast<const PtexHalf*>(src), sstride, uw, vw,
static_cast<PtexHalf*>(dst), dstride, nchan); break;
case dt_uint16: reducev(static_cast<const uint16_t*>(src), sstride, uw, vw,
static_cast<uint16_t*>(dst), dstride, nchan); break;
case dt_float: reducev(static_cast<const float*>(src), sstride, uw, vw,
static_cast<float*>(dst), dstride, nchan); break;
}
}
namespace {
// generate a reduction of a packed-triangle texture
// note: this method won't work for tiled textures
template<typename T>
inline void reduceTri(const T* src, int sstride, int w, int /*vw*/,
T* dst, int dstride, int nchan)
{
sstride /= (int)sizeof(T);
dstride /= (int)sizeof(T);
int rowlen = w*nchan;
const T* src2 = src + (w-1) * sstride + rowlen - nchan;
int srowinc2 = -2*sstride - nchan;
int srowskip = 2*sstride - rowlen;
int srowskip2 = w*sstride - 2 * nchan;
int drowskip = dstride - rowlen/2;
for (const T* end = src + w*sstride; src != end;
src += srowskip, src2 += srowskip2, dst += drowskip)
for (const T* rowend = src + rowlen; src != rowend; src += nchan, src2 += srowinc2)
for (const T* pixend = src+nchan; src != pixend; src++, src2++)
*dst++ = T(quarter(src[0] + src[nchan] + src[sstride] + src2[0]));
}
}
void reduceTri(const void* src, int sstride, int w, int /*vw*/,
void* dst, int dstride, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: reduceTri(static_cast<const uint8_t*>(src), sstride, w, 0,
static_cast<uint8_t*>(dst), dstride, nchan); break;
case dt_half: reduceTri(static_cast<const PtexHalf*>(src), sstride, w, 0,
static_cast<PtexHalf*>(dst), dstride, nchan); break;
case dt_uint16: reduceTri(static_cast<const uint16_t*>(src), sstride, w, 0,
static_cast<uint16_t*>(dst), dstride, nchan); break;
case dt_float: reduceTri(static_cast<const float*>(src), sstride, w, 0,
static_cast<float*>(dst), dstride, nchan); break;
}
}
void fill(const void* src, void* dst, int dstride,
int ures, int vres, int pixelsize)
{
// fill first row
int rowlen = ures*pixelsize;
char* ptr = (char*) dst;
char* end = ptr + rowlen;
for (; ptr != end; ptr += pixelsize) memcpy(ptr, src, pixelsize);
// fill remaining rows from first row
ptr = (char*) dst + dstride;
end = (char*) dst + vres*dstride;
for (; ptr != end; ptr += dstride) memcpy(ptr, dst, rowlen);
}
void copy(const void* src, int sstride, void* dst, int dstride,
int vres, int rowlen)
{
// regular non-tiled case
if (sstride == rowlen && dstride == rowlen) {
// packed case - copy in single block
memcpy(dst, src, vres*rowlen);
} else {
// copy a row at a time
const char* sptr = (const char*) src;
char* dptr = (char*) dst;
for (const char* end = sptr + vres*sstride; sptr != end;) {
memcpy(dptr, sptr, rowlen);
dptr += dstride;
sptr += sstride;
}
}
}
namespace {
template<typename T>
inline void blend(const T* src, float weight, T* dst, int rowlen, int nchan)
{
for (const T* end = src + rowlen * nchan; src != end; dst++)
*dst = T(*dst + T(weight * (float)*src++));
}
template<typename T>
inline void blendflip(const T* src, float weight, T* dst, int rowlen, int nchan)
{
dst += (rowlen-1) * nchan;
for (const T* end = src + rowlen * nchan; src != end;) {
for (int i = 0; i < nchan; i++, dst++) {
*dst = T(*dst + T(weight * (float)*src++));
}
dst -= nchan*2;
}
}
}
void blend(const void* src, float weight, void* dst, bool flip,
int rowlen, DataType dt, int nchan)
{
switch ((dt<<1) | int(flip)) {
case (dt_uint8<<1): blend(static_cast<const uint8_t*>(src), weight,
static_cast<uint8_t*>(dst), rowlen, nchan); break;
case (dt_uint8<<1 | 1): blendflip(static_cast<const uint8_t*>(src), weight,
static_cast<uint8_t*>(dst), rowlen, nchan); break;
case (dt_half<<1): blend(static_cast<const PtexHalf*>(src), weight,
static_cast<PtexHalf*>(dst), rowlen, nchan); break;
case (dt_half<<1 | 1): blendflip(static_cast<const PtexHalf*>(src), weight,
static_cast<PtexHalf*>(dst), rowlen, nchan); break;
case (dt_uint16<<1): blend(static_cast<const uint16_t*>(src), weight,
static_cast<uint16_t*>(dst), rowlen, nchan); break;
case (dt_uint16<<1 | 1): blendflip(static_cast<const uint16_t*>(src), weight,
static_cast<uint16_t*>(dst), rowlen, nchan); break;
case (dt_float<<1): blend(static_cast<const float*>(src), weight,
static_cast<float*>(dst), rowlen, nchan); break;
case (dt_float<<1 | 1): blendflip(static_cast<const float*>(src), weight,
static_cast<float*>(dst), rowlen, nchan); break;
}
}
namespace {
template<typename T>
inline void average(const T* src, int sstride, int uw, int vw,
T* dst, int nchan)
{
float* buff = (float*) alloca(nchan*sizeof(float));
memset(buff, 0, nchan*sizeof(float));
sstride /= (int)sizeof(T);
int rowlen = uw*nchan;
int rowskip = sstride - rowlen;
for (const T* end = src + vw*sstride; src != end; src += rowskip)
for (const T* rowend = src + rowlen; src != rowend;)
for (int i = 0; i < nchan; i++) buff[i] += (float)*src++;
float scale = 1.0f/(float)(uw*vw);
for (int i = 0; i < nchan; i++) dst[i] = T(buff[i]*scale);
}
}
void average(const void* src, int sstride, int uw, int vw,
void* dst, DataType dt, int nchan)
{
switch (dt) {
case dt_uint8: average(static_cast<const uint8_t*>(src), sstride, uw, vw,
static_cast<uint8_t*>(dst), nchan); break;
case dt_half: average(static_cast<const PtexHalf*>(src), sstride, uw, vw,
static_cast<PtexHalf*>(dst), nchan); break;
case dt_uint16: average(static_cast<const uint16_t*>(src), sstride, uw, vw,
static_cast<uint16_t*>(dst), nchan); break;
case dt_float: average(static_cast<const float*>(src), sstride, uw, vw,
static_cast<float*>(dst), nchan); break;
}
}
namespace {
struct CompareRfaceIds {
const FaceInfo* faces;
CompareRfaceIds(const FaceInfo* facesArg) : faces(facesArg) {}
bool operator() (uint32_t faceid1, uint32_t faceid2)
{
const Ptex::FaceInfo& f1 = faces[faceid1];
const Ptex::FaceInfo& f2 = faces[faceid2];
int min1 = f1.isConstant() ? 1 : PtexUtils::min(f1.res.ulog2, f1.res.vlog2);
int min2 = f2.isConstant() ? 1 : PtexUtils::min(f2.res.ulog2, f2.res.vlog2);
return min1 > min2;
}
};
}
namespace {
template<typename T>
inline void multalpha(T* data, int npixels, int nchannels, int alphachan, float scale)
{
int alphaoffset; // offset to alpha chan from data ptr
int nchanmult; // number of channels to alpha-multiply
if (alphachan == 0) {
// first channel is alpha chan: mult the rest of the channels
data++;
alphaoffset = -1;
nchanmult = nchannels - 1;
}
else {
// mult all channels up to alpha chan
alphaoffset = alphachan;
nchanmult = alphachan;
}
for (T* end = data + npixels*nchannels; data != end; data += nchannels) {
float aval = scale * (float)data[alphaoffset];
for (int i = 0; i < nchanmult; i++) data[i] = T((float)data[i] * aval);
}
}
}
void multalpha(void* data, int npixels, DataType dt, int nchannels, int alphachan)
{
float scale = OneValueInv(dt);
switch(dt) {
case dt_uint8: multalpha(static_cast<uint8_t*>(data), npixels, nchannels, alphachan, scale); break;
case dt_uint16: multalpha(static_cast<uint16_t*>(data), npixels, nchannels, alphachan, scale); break;
case dt_half: multalpha(static_cast<PtexHalf*>(data), npixels, nchannels, alphachan, scale); break;
case dt_float: multalpha(static_cast<float*>(data), npixels, nchannels, alphachan, scale); break;
}
}
namespace {
template<typename T>
inline void divalpha(T* data, int npixels, int nchannels, int alphachan, float scale)
{
int alphaoffset; // offset to alpha chan from data ptr
int nchandiv; // number of channels to alpha-divide
if (alphachan == 0) {
// first channel is alpha chan: div the rest of the channels
data++;
alphaoffset = -1;
nchandiv = nchannels - 1;
}
else {
// div all channels up to alpha chan
alphaoffset = alphachan;
nchandiv = alphachan;
}
for (T* end = data + npixels*nchannels; data != end; data += nchannels) {
T alpha = data[alphaoffset];
if (!alpha) continue; // don't divide by zero!
float aval = scale / (float)alpha;
for (int i = 0; i < nchandiv; i++) data[i] = T((float)data[i] * aval);
}
}
}
void divalpha(void* data, int npixels, DataType dt, int nchannels, int alphachan)
{
float scale = OneValue(dt);
switch(dt) {
case dt_uint8: divalpha(static_cast<uint8_t*>(data), npixels, nchannels, alphachan, scale); break;
case dt_uint16: divalpha(static_cast<uint16_t*>(data), npixels, nchannels, alphachan, scale); break;
case dt_half: divalpha(static_cast<PtexHalf*>(data), npixels, nchannels, alphachan, scale); break;
case dt_float: divalpha(static_cast<float*>(data), npixels, nchannels, alphachan, scale); break;
}
}
void genRfaceids(const FaceInfo* faces, int nfaces,
uint32_t* rfaceids, uint32_t* faceids)
{
// stable_sort faceids by smaller dimension (u or v) in descending order
// treat const faces as having res of 1
// init faceids
for (int i = 0; i < nfaces; i++) faceids[i] = i;
// sort faceids by rfaceid
std::stable_sort(faceids, faceids + nfaces, CompareRfaceIds(faces));
// generate mapping from faceid to rfaceid
for (int i = 0; i < nfaces; i++) {
// note: i is the rfaceid
rfaceids[faceids[i]] = i;
}
}
namespace {
// apply to 1..4 channels, unrolled
template<class T, int nChan>
void ApplyConst(float weight, float* dst, void* data, int /*nChan*/)
{
// dst[i] += data[i] * weight for i in {0..n-1}
VecAccum<T,nChan>()(dst, static_cast<T*>(data), weight);
}
// apply to N channels (general case)
template<class T>
void ApplyConstN(float weight, float* dst, void* data, int nChan)
{
// dst[i] += data[i] * weight for i in {0..n-1}
VecAccumN<T>()(dst, static_cast<T*>(data), nChan, weight);
}
}
ApplyConstFn
applyConstFunctions[20] = {
ApplyConstN<uint8_t>, ApplyConstN<uint16_t>, ApplyConstN<PtexHalf>, ApplyConstN<float>,
ApplyConst<uint8_t,1>, ApplyConst<uint16_t,1>, ApplyConst<PtexHalf,1>, ApplyConst<float,1>,
ApplyConst<uint8_t,2>, ApplyConst<uint16_t,2>, ApplyConst<PtexHalf,2>, ApplyConst<float,2>,
ApplyConst<uint8_t,3>, ApplyConst<uint16_t,3>, ApplyConst<PtexHalf,3>, ApplyConst<float,3>,
ApplyConst<uint8_t,4>, ApplyConst<uint16_t,4>, ApplyConst<PtexHalf,4>, ApplyConst<float,4>,
};
} // namespace PtexUtils end
#ifndef PTEX_USE_STDSTRING
String::~String()
{
if (_str) free(_str);
}
String& String::operator=(const char* str)
{
if (_str) free(_str);
_str = str ? strdup(str) : 0;
return *this;
}
std::ostream& operator << (std::ostream& stream, const String& str)
{
stream << str.c_str();
return stream;
}
#endif
PTEX_NAMESPACE_END
PtexHalf.h
Half-precision floating-point type.
PtexPlatform.h
Platform-specific classes, functions, and includes.
faces
const FaceInfo * faces
Definition PtexUtils.cpp:540
EdgeFilterModeName
const char * EdgeFilterModeName(EdgeFilterMode m)
Definition PtexUtils.cpp:77
ConvertFromFloat
void ConvertFromFloat(void *dst, const float *src, DataType dt, int numChannels)
Definition PtexUtils.cpp:134
MetaDataTypeName
const char * MetaDataTypeName(MetaDataType mdt)
Definition PtexUtils.cpp:97
BorderModeName
const char * BorderModeName(BorderMode m)
Definition PtexUtils.cpp:68
EdgeIdName
const char * EdgeIdName(EdgeId eid)
Definition PtexUtils.cpp:87
MeshTypeName
PTEX_NAMESPACE_BEGIN const char * MeshTypeName(MeshType mt)
Definition PtexUtils.cpp:48
ConvertToFloat
void ConvertToFloat(float *dst, const void *src, DataType dt, int numChannels)
Definition PtexUtils.cpp:123
operator<<
std::ostream & operator<<(std::ostream &stream, const String &str)
Definition PtexUtils.cpp:692
DataTypeName
const char * DataTypeName(DataType dt)
Definition PtexUtils.cpp:58
PtexUtils.h
PTEX_NAMESPACE_END
#define PTEX_NAMESPACE_END
Definition PtexVersion.h:62
Ptex::String
Memory-managed string.
Definition Ptexture.h:296
PTEX_NAMESPACE_BEGIN
Definition PtexSeparableKernel.cpp:42
PtexUtils
Definition PtexUtils.cpp:145
PtexUtils::clamp
T clamp(T x, T lo, T hi)
Definition PtexUtils.h:154
PtexUtils::genRfaceids
void genRfaceids(const FaceInfo *faces, int nfaces, uint32_t *rfaceids, uint32_t *faceids)
Definition PtexUtils.cpp:630
PtexUtils::reduceu
void reduceu(const void *src, int sstride, int uw, int vw, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:333
PtexUtils::isConstant
bool isConstant(const void *data, int stride, int ures, int vres, int pixelSize)
Definition PtexUtils.cpp:147
PtexUtils::min
T min(T a, T b)
Definition PtexUtils.h:148
PtexUtils::divalpha
void divalpha(void *data, int npixels, DataType dt, int nchannels, int alphachan)
Definition PtexUtils.cpp:618
PtexUtils::encodeDifference
void encodeDifference(void *data, int size, DataType dt)
Definition PtexUtils.cpp:251
PtexUtils::reduce
void reduce(const void *src, int sstride, int uw, int vw, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:299
PtexUtils::deinterleave
void deinterleave(const void *src, int sstride, int uw, int vw, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:226
PtexUtils::quarter
T quarter(T val)
Definition PtexUtils.h:163
PtexUtils::blend
void blend(const void *src, float weight, void *dst, bool flip, int rowlen, DataType dt, int nchan)
Definition PtexUtils.cpp:480
PtexUtils::decodeDifference
void decodeDifference(void *data, int size, DataType dt)
Definition PtexUtils.cpp:271
PtexUtils::reducev
void reducev(const void *src, int sstride, int uw, int vw, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:366
PtexUtils::fill
void fill(const void *src, void *dst, int dstride, int ures, int vres, int pixelsize)
Definition PtexUtils.cpp:422
PtexUtils::reduceTri
void reduceTri(const void *src, int sstride, int w, int, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:406
PtexUtils::halve
T halve(T val)
Definition PtexUtils.h:157
PtexUtils::copy
void copy(const void *src, int sstride, void *dst, int dstride, int vres, int rowlen)
Definition PtexUtils.cpp:438
PtexUtils::multalpha
void multalpha(void *data, int npixels, DataType dt, int nchannels, int alphachan)
Definition PtexUtils.cpp:579
PtexUtils::interleave
void interleave(const void *src, int sstride, int uw, int vw, void *dst, int dstride, DataType dt, int nchan)
Definition PtexUtils.cpp:189
PtexUtils::ApplyConstFn
void(* ApplyConstFn)(float weight, float *dst, void *data, int nChan)
Definition PtexUtils.h:277
PtexUtils::average
void average(const void *src, int sstride, int uw, int vw, void *dst, DataType dt, int nchan)
Definition PtexUtils.cpp:522
PtexUtils::applyConstFunctions
ApplyConstFn applyConstFunctions[20]
Definition PtexUtils.cpp:668
PtexHalf
Half-precision (16-bit) floating-point type.
Definition PtexHalf.h:72
Ptex::FaceInfo
Information about a face, as stored in the Ptex file header.
Definition Ptexture.h:229
Ptex::FaceInfo::res
Res res
Resolution of face.
Definition Ptexture.h:230
Ptex::FaceInfo::isConstant
bool isConstant() const
Determine if face is constant (by checking a flag).
Definition Ptexture.h:262
Ptex::Res::ulog2
int8_t ulog2
log base 2 of u resolution, in texels
Definition Ptexture.h:160
Ptex::Res::vlog2
int8_t vlog2
log base 2 of v resolution, in texels
Definition Ptexture.h:161