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Diffstat (limited to 'thirdparty/oidn/core/transfer_function.cpp')
| -rw-r--r-- | thirdparty/oidn/core/transfer_function.cpp | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/thirdparty/oidn/core/transfer_function.cpp b/thirdparty/oidn/core/transfer_function.cpp deleted file mode 100644 index ce5deca56b..0000000000 --- a/thirdparty/oidn/core/transfer_function.cpp +++ /dev/null @@ -1,103 +0,0 @@ -// ======================================================================== // -// Copyright 2009-2019 Intel Corporation // -// // -// Licensed under the Apache License, Version 2.0 (the "License"); // -// you may not use this file except in compliance with the License. // -// You may obtain a copy of the License at // -// // -// http://www.apache.org/licenses/LICENSE-2.0 // -// // -// Unless required by applicable law or agreed to in writing, software // -// distributed under the License is distributed on an "AS IS" BASIS, // -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // -// See the License for the specific language governing permissions and // -// limitations under the License. // -// ======================================================================== // - -#include "transfer_function.h" - -namespace oidn { - - const float LogTransferFunction::xScale = 1.f / log(LogTransferFunction::yMax + 1.f); - const float PQXTransferFunction::xScale = 1.f / PQXTransferFunction::pqxForward(PQXTransferFunction::yMax * PQXTransferFunction::yScale); - - float AutoexposureNode::autoexposure(const Image& color) - { - assert(color.format == Format::Float3); - - constexpr float key = 0.18f; - constexpr float eps = 1e-8f; - constexpr int K = 16; // downsampling amount - - // Downsample the image to minimize sensitivity to noise - const int H = color.height; // original height - const int W = color.width; // original width - const int HK = (H + K/2) / K; // downsampled height - const int WK = (W + K/2) / K; // downsampled width - - // Compute the average log luminance of the downsampled image - using Sum = std::pair<float, int>; - - // -- GODOT start -- - // Sum sum = - // tbb::parallel_reduce( - // tbb::blocked_range2d<int>(0, HK, 0, WK), - // Sum(0.f, 0), - // [&](const tbb::blocked_range2d<int>& r, Sum sum) -> Sum - // { - // // Iterate over blocks - // for (int i = r.rows().begin(); i != r.rows().end(); ++i) - // { - // for (int j = r.cols().begin(); j != r.cols().end(); ++j) - // { - - Sum sum = Sum(0.0f, 0); - - for (int i = 0; i != HK; ++i) - { - for (int j = 0; j != WK; ++j) - { - // Compute the average luminance in the current block - const int beginH = int(ptrdiff_t(i) * H / HK); - const int beginW = int(ptrdiff_t(j) * W / WK); - const int endH = int(ptrdiff_t(i+1) * H / HK); - const int endW = int(ptrdiff_t(j+1) * W / WK); - - float L = 0.f; - - for (int h = beginH; h < endH; ++h) - { - for (int w = beginW; w < endW; ++w) - { - const float* rgb = (const float*)color.get(h, w); - - const float r = maxSafe(rgb[0], 0.f); - const float g = maxSafe(rgb[1], 0.f); - const float b = maxSafe(rgb[2], 0.f); - - L += luminance(r, g, b); - } - } - - L /= (endH - beginH) * (endW - beginW); - - // Accumulate the log luminance - if (L > eps) - { - sum.first += log2(L); - sum.second++; - } - } - } - - // return sum; - // }, - // [](Sum a, Sum b) -> Sum { return Sum(a.first+b.first, a.second+b.second); }, - // tbb::static_partitioner() - // ); - // -- GODOT end -- - - return (sum.second > 0) ? (key / exp2(sum.first / float(sum.second))) : 1.f; - } - -} // namespace oidn |