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Added configurable ambient_occlusion_gamma. Default is 2.2 (same as previous hardcoded values).
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@ -216,6 +216,11 @@
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# Set to true enables waving plants. Requires shaders enabled.
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#enable_waving_plants = false
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# Enables caching of facedir rotated meshes
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#ambient_occlusion_gamma = 2.2
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# The strength (darkness) of node ambient-occlusion shading.
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# Lower is darker, Higher is lighter. The valid range of values for this
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# setting is 0.25 to 4.0 inclusive. If the value is out of range it will be
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# set to the nearest valid value.
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#enable_mesh_cache = true
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# The time in seconds it takes between repeated
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# right clicks when holding the right mouse button.
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@ -548,4 +553,3 @@
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# Noise parameters for biome API temperature and humidity
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#mg_biome_np_heat = 50, 50, (500, 500, 500), 5349, 3, 0.5, 2.0
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#mg_biome_np_humidity = 50, 50, (500, 500, 500), 842, 3, 0.5, 2.0
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@ -159,6 +159,7 @@ void set_default_settings(Settings *settings)
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settings->setDefault("water_wave_speed", "5.0");
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settings->setDefault("enable_waving_leaves", "false");
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settings->setDefault("enable_waving_plants", "false");
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settings->setDefault("ambient_occlusion_gamma", "2.2");
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settings->setDefault("enable_shaders", "true");
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settings->setDefault("repeat_rightclick_time", "0.25");
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settings->setDefault("enable_particles", "true");
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@ -346,4 +347,3 @@ void override_default_settings(Settings *settings, Settings *from)
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settings->setDefault(name, from->get(name));
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}
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}
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@ -288,9 +288,15 @@ static u16 getSmoothLightCombined(v3s16 p, MeshMakeData *data)
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if (ambient_occlusion > 4)
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{
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//table of precalculated gamma space multiply factors
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//light^2.2 * factor (0.75, 0.5, 0.25, 0.0), so table holds factor ^ (1 / 2.2)
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static const float light_amount[4] = { 0.877424315, 0.729740053, 0.532520545, 0.0 };
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static const float ao_gamma = rangelim(
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g_settings->getFloat("ambient_occlusion_gamma"), 0.25, 4.0);
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// Table of gamma space multiply factors.
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static const float light_amount[3] = {
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powf(0.75, 1.0 / ao_gamma),
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powf(0.5, 1.0 / ao_gamma),
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powf(0.25, 1.0 / ao_gamma)
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};
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//calculate table index for gamma space multiplier
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ambient_occlusion -= 5;
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