template <typename Tmemory, typename Treturn> MIPMap<Tmemory> *
ImageTexture<Tmemory, Treturn>::GetTexture(const string &filename,
bool doTrilinear, bool noFiltering, float maxAniso, ImageWrap wrap,
float scale, float gamma) {
// Look for texture in texture cache
TexInfo texInfo(filename, doTrilinear, maxAniso, wrap, scale, gamma);
if (textures.find(texInfo) != textures.end())
return textures[texInfo];
int width, height;
RGBSpectrum *texels = ReadImage(filename, &width, &height);
MIPMap<Tmemory> *ret = NULL;
if (texels) {
// Convert texels to type _Tmemory_ and create _MIPMap_
Tmemory *convertedTexels = new Tmemory[width*height];
for (int i = 0; i < width*height; ++i)
convertIn(texels[i], &convertedTexels[i], scale, gamma);
ret = new MIPMap<Tmemory>(width, height, convertedTexels, doTrilinear,noFiltering,
maxAniso, wrap);
delete[] texels;
delete[] convertedTexels;
}
else {
// Create one-valued _MIPMap_
Tmemory *oneVal = new Tmemory[1];
oneVal[0] = powf(scale, gamma);
ret = new MIPMap<Tmemory>(1, 1, oneVal);
delete[] oneVal;
}
textures[texInfo] = ret;
PBRT_LOADED_IMAGE_MAP(const_cast<char *>(filename.c_str()), width, height, sizeof(Tmemory), ret);
return ret;
}
MIPMap<Tmemory> *ImageTexture<Tmemory, Treturn>::GetTexture(
const std::string &filename, bool doTrilinear, Float maxAniso,
ImageWrap wrap, Float scale, bool gamma) {
// Return _MIPMap_ from texture cache if present
TexInfo texInfo(filename, doTrilinear, maxAniso, wrap, scale, gamma);
if (textures.find(texInfo) != textures.end())
return textures[texInfo].get();
// Create _MIPMap_ for _filename_
Point2i resolution;
std::unique_ptr<RGBSpectrum[]> texels = ReadImage(filename, &resolution);
MIPMap<Tmemory> *mipmap = nullptr;
if (texels) {
// Convert texels to type _Tmemory_ and create _MIPMap_
std::unique_ptr<Tmemory[]> convertedTexels(
new Tmemory[resolution.x * resolution.y]);
for (int i = 0; i < resolution.x * resolution.y; ++i)
convertIn(texels[i], &convertedTexels[i], scale, gamma);
mipmap = new MIPMap<Tmemory>(resolution, convertedTexels.get(),
doTrilinear, maxAniso, wrap);
} else {
// Create one-valued _MIPMap_
Tmemory oneVal = scale;
mipmap = new MIPMap<Tmemory>(Point2i(1, 1), &oneVal);
}
textures[texInfo].reset(mipmap);
return mipmap;
}
//////////////////////////////////////////////////////////////////////
// LM service: convertOut.
//////////////////////////////////////////////////////////////////////
LmResult LmLanguageManager::convertOut(
NAType *src,
NAType **dst,
NAMemory *mem)
{
*dst = NULL;
if (src->getTypeQualifier() == NA_NUMERIC_TYPE &&
src->getPrecision() == SQL_FLOAT_PRECISION)
return LM_CONV_ERROR;
return convertIn(src, dst, mem);
}
