a47d20f8be
Administrative source import: native x86 compilation passed for 423 authored units. Source placement and submission states are migrated separately; this commit does not imply peer acceptance.
Previous head: 35d2a8cb36
Payload SHA256: 592f016d2730c5593bb653aa054c1e5f76a6df72c8f5a09e66f74876e2e33dee
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
#include "Contents/Ground/GroundGeometry.h"
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#include "Resource/World/TerrainResource.h"
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// OFFSET: 0x00ABFB10
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// FUNCTION: fn_17558
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void GroundGeometry::InitializeLighting(const C3dAttr& terrain) {
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// STATIC: 0x01348128; center, north, south, east, west in that order.
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constexpr int offsets[5][2] = {{0, 0}, {0, -1}, {0, 1}, {1, 0}, {-1, 0}};
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const int columns = 2 * this->width;
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const int rows = 2 * this->height;
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for (int row = 0; row < rows; ++row) {
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for (int column = 0; column < columns; ++column) {
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float average = 0.0f;
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const TerrainHeightCell* cell = terrain.Grid().CellAt(column, row);
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if (cell) {
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average = ((cell->heights[1] + cell->heights[0]) + cell->heights[2] + cell->heights[3]) * 0.25f;
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}
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float minimum;
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float maximum;
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this->CellBounds(column / 2, row / 2, minimum, maximum);
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float red = 1.0f;
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float green = 1.0f;
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float blue = 1.0f;
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if (average >= minimum - 2.5f) {
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unsigned sums[4]{};
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for (const auto& offset : offsets) {
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unsigned char alpha;
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unsigned char sampleRed;
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unsigned char sampleGreen;
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unsigned char sampleBlue;
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this->LightmapSample(column + offset[0], row + offset[1], alpha, sampleRed, sampleGreen, sampleBlue);
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sums[0] += alpha;
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sums[1] += sampleRed;
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sums[2] += sampleGreen;
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sums[3] += sampleBlue;
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}
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const float alpha = (static_cast<float>(sums[0]) / 5.0f) / 255.0f;
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red = ((static_cast<float>(sums[1]) / 5.0f) * 0.0078125f) + alpha;
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green = ((static_cast<float>(sums[2]) / 5.0f) * 0.0078125f) + alpha;
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blue = ((static_cast<float>(sums[3]) / 5.0f) * 0.0078125f) + alpha;
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const float first = green > red ? green : red;
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const float largest = blue > first ? blue : first;
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if (largest > 1.0f) {
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red = red / largest;
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green = green / largest;
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blue = blue / largest;
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}
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}
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if (!this->lighting.empty()) {
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const auto index = static_cast<unsigned>(column) + 2u * static_cast<unsigned>(row) * static_cast<unsigned>(this->width);
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this->lighting[index] = {red, green, blue};
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}
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}
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}
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}
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