Stars optimization and small tweaks

src/definition/AtmosphereDefinition.cpp

@@ -154,7 +154,7 @@ void AtmosphereDefinition::applyPreset(AtmospherePreset preset)
             ;
     }
 
-    generateStars(5000);
+    generateStars(2000);
 
     validate();
 }
@@ -167,7 +167,7 @@ void AtmosphereDefinition::generateStars(int count)
     {
         Star star;
 
-        star.location = Vector3((RandomGenerator::random() - 0.5) * 100000.0, (RandomGenerator::random() - 0.5) * 100000.0, (RandomGenerator::random() - 0.5) * 100000.0);
+        star.location = Vector3((RandomGenerator::random() - 0.5) * 100000.0, (RandomGenerator::random() * 0.5) * 100000.0, (RandomGenerator::random() - 0.5) * 100000.0);
         if (star.location.getNorm() < 30000.0)
         {
             i--;

src/render/preview/WaterAspectPreviewRenderer.cpp

@@ -13,6 +13,8 @@ WaterAspectPreviewRenderer::WaterAspectPreviewRenderer(WaterDefinition* definiti
     lighting = true;
     background = 2;
 
+    render_quality = 3;
+
     customData[0] = &lighting;
     customData[1] = &background;
 }

src/render/software/NightSky.cpp

@@ -6,6 +6,7 @@
 #include "SoftwareRenderer.h"
 #include "Scenery.h"
 #include "AtmosphereDefinition.h"
+#include "AtmosphereRenderer.h"
 #include "SurfaceMaterial.h"
 #include "LightComponent.h"
 #include "LightStatus.h"
@@ -37,23 +38,28 @@ const Color NightSky::getColor(double altitude, const Vector3 &direction)
     Vector3 location(0.0, altitude, 0.0);
 
     // Get stars
-    for (const auto &star: atmosphere->stars)
+    Vector3 sun_direction = renderer->getAtmosphereRenderer()->getSunDirection();
+    if (sun_direction.y < 0.1)
     {
-        if (star.location.dotProduct(direction) >= 0)
+        double factor = (sun_direction.y < 0.0) ? 1.0 : 1.0 - (sun_direction.y * 10.0);
+        for (const auto &star: atmosphere->stars)
         {
-            double radius = star.radius;
-            Vector3 hit1, hit2;
-            int hits = Geometry::rayIntersectSphere(location, direction, star.location, radius, &hit1, &hit2);
-            if (hits > 1)
+            if (star.location.dotProduct(direction) >= 0)
             {
-                double dist = hit2.sub(hit1).getNorm() / radius; // distance between intersection points (relative to radius)
-
-                Color color = star.col;
-                if (dist <= 0.5)
+                double radius = star.radius;
+                Vector3 hit1, hit2;
+                int hits = Geometry::rayIntersectSphere(location, direction, star.location, radius, &hit1, &hit2);
+                if (hits > 1)
                 {
-                    color.a *= 1.0 - dist / 0.5;
+                    double dist = hit2.sub(hit1).getNorm() / radius; // distance between intersection points (relative to radius)
+
+                    Color color = star.col;
+                    if (dist <= 0.5)
+                    {
+                        color.a *= (1.0 - dist / 0.5) * factor;
+                    }
+                    result.mask(color);
                 }
-                result.mask(color);
             }
         }
     }

src/render/software/SoftwareRenderer.cpp

@@ -141,9 +141,9 @@ void SoftwareRenderer::disableAtmosphere()
     light.reflection = 0.0;
     lights.push_back(light);
 
-    light.color.r = 0.2;
-    light.color.g = 0.2;
-    light.color.b = 0.21;
+    light.color.r = 0.25;
+    light.color.g = 0.25;
+    light.color.b = 0.265;
     light.direction.x = 1.0;
     light.direction.y = -0.5;
     light.direction.z = -1.0;

src/render/software/TerrainRasterizer.cpp

@@ -117,7 +117,7 @@ static void _getChunk(SoftwareRenderer* renderer, TerrainRasterizer::TerrainChun
     int coverage = renderer->render_camera->isUnprojectedBoxInView(box);
     if (coverage > 0)
     {
-        chunk->detail_hint = (int)ceil(sqrt((double)coverage) / (double)(25 - 2 * renderer->render_quality));
+        chunk->detail_hint = (int)ceil(sqrt((double)coverage) / (double)(25 - renderer->render_quality));
         if (chunk->detail_hint > 5 * renderer->render_quality)
         {
             chunk->detail_hint = 5 * renderer->render_quality;
@@ -139,7 +139,7 @@ void TerrainRasterizer::getTessellationInfo(int displaced)
     double radius_int, radius_ext;
     double base_chunk_size, chunk_size;
 
-    base_chunk_size = 5.0 / (double)renderer->render_quality;
+    base_chunk_size = 8.0 / (double)(renderer->render_quality * renderer->render_quality);
 
     chunk_factor = 1;
     chunk_count = 2;

src/render/software/clouds/CloudModelStratoCumulus.cpp

@@ -37,7 +37,7 @@ void CloudModelStratoCumulus::update()
 
 void CloudModelStratoCumulus::getAltitudeRange(double *min_altitude, double *max_altitude) const
 {
-    *min_altitude = 4.0 + 14.0 * layer->altitude;
+    *min_altitude = 10.0 + 10.0 * layer->altitude;
     *max_altitude = *min_altitude + 11.0 * layer->scaling;
 }
 
@@ -55,9 +55,9 @@ double CloudModelStratoCumulus::getDensity(const Vector3 &location) const
     }
     else
     {
-        double x = location.x / noise_scaling;
+        double x = 0.3 * location.x / noise_scaling;
         double y = (location.y - min_altitude) / noise_scaling;
-        double z = location.z / noise_scaling;
+        double z = 0.3 * location.z / noise_scaling;
 
         //double coverage = layer->coverage * layer->_coverage_by_altitude->getValue((position.y - layer->altitude) / layer->scaling);
         double coverage = layer->coverage;