sky-lights fix, graphics.skybox-resolution

res/shaders/main.glslv

@@ -35,7 +35,7 @@ void main(){
 	a_color = vec4(pow(light, vec3(u_gamma)),1.0f);
 	a_texCoord = v_texCoord;
 
-	vec3 skyLightColor = texture(u_cubemap, vec3(-0.4f, -0.4f, -0.4f)).rgb;
+	vec3 skyLightColor = texture(u_cubemap, vec3(-0.4f, 0.05f, -0.4f)).rgb;
 	skyLightColor.g *= 0.9;
 	skyLightColor.b *= 0.8;
 	skyLightColor = min(vec3(1.0), skyLightColor*SKY_LIGHT_MUL);

res/shaders/skybox_gen.glslf

@@ -244,10 +244,12 @@ uniform vec3 u_lightDir;
 uniform int u_quality;
 uniform float u_mie;
 
+#include <commons>
+
 void main() {
     vec3 camera_position = vec3(0.0f, PLANET_RADIUS+1.0f, 0.0f);
-    vec3 camera_vector = normalize(u_xaxis * v_coord.x + 
+    vec3 camera_vector = normalize(u_xaxis * v_coord.x*1.005 + 
-                                   u_yaxis * -v_coord.y -
+                                   u_yaxis * -v_coord.y*1.005 -
                                    u_zaxis);
     // hide darkness at horizon
     camera_vector.y = max(0.01, camera_vector.y)*(1.0-u_mie*0.08) + 0.08*u_mie;  

src/files/settings_io.cpp

@@ -31,6 +31,7 @@ toml::Wrapper create_wrapper(EngineSettings& settings) {
 	graphics.add("fog-curve", &settings.graphics.fogCurve);
 	graphics.add("backlight", &settings.graphics.backlight);
 	graphics.add("frustum-culling", &settings.graphics.frustumCulling);
+	graphics.add("skybox-resolution", &settings.graphics.skyboxResolution);
 
 	toml::Section& debug = wrapper.add("debug");
 	debug.add("generator-test-mode", &settings.debug.generatorTestMode);

src/frontend/WorldRenderer.cpp

@@ -45,13 +45,15 @@ WorldRenderer::WorldRenderer(Engine* engine,
 	  lineBatch(new LineBatch()),
 	  renderer( new ChunksRenderer(level, cache, engine->getSettings())) {
 
+	auto& settings = engine->getSettings();
 	level->events->listen(EVT_CHUNK_HIDDEN, 
 		[this](lvl_event_type type, Chunk* chunk) {
 			renderer->unload(chunk);
 		}
 	);
 	auto assets = engine->getAssets();
-	skybox = new Skybox(64, assets->getShader("skybox_gen"));
+	skybox = new Skybox(settings.graphics.skyboxResolution, 
+						assets->getShader("skybox_gen"));
 }
 
 WorldRenderer::~WorldRenderer() {

src/settings.h

@@ -45,6 +45,7 @@ struct GraphicsSettings {
 	bool backlight = true;
 	/* Enable chunks frustum culling */
 	bool frustumCulling = true;
+	int skyboxResolution = 64 + 32;
 };
 
 struct DebugSettings {