day-night loop, dynamic skybox, clock on debug panel

res/shaders/main.glslv

@@ -7,6 +7,7 @@ layout (location = 2) in float v_light;
 out vec4 a_color;
 out vec2 a_texCoord;
 out float a_distance;
+out vec3 a_dir;
 
 uniform mat4 u_model;
 uniform mat4 u_proj;
@@ -14,10 +15,13 @@ uniform mat4 u_view;
 uniform vec3 u_skyLightColor;
 uniform vec3 u_cameraPos;
 uniform float u_gamma;
+uniform samplerCube u_cubemap;
 
 uniform vec3 u_torchlightColor;
 uniform float u_torchlightDistance;
 
+#define SKY_LIGHT_MUL 2.5
+
 vec4 decompress_light(float compressed_light) {
 	vec4 result;
     int compressed = floatBitsToInt(compressed_light);
@@ -30,15 +34,22 @@ vec4 decompress_light(float compressed_light) {
 
 void main(){
 	vec2 pos2d = (u_model * vec4(v_position, 1.0)).xz-u_cameraPos.xz;
-	vec4 modelpos = u_model * vec4(v_position+vec3(0,pow(length(pos2d)*0.0, 3.0),0), 1.0);
+	vec4 modelpos = u_model * vec4(v_position, 1.0);
 	vec4 viewmodelpos = u_view * modelpos;
 	vec4 decomp_light = decompress_light(v_light);
 	vec3 light = decomp_light.rgb;
 	float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz)/u_torchlightDistance);
+	a_dir = modelpos.xyz - u_cameraPos;
 	light += torchlight * u_torchlightColor;
 	a_color = vec4(pow(light, vec3(u_gamma)),1.0f);
 	a_texCoord = v_texCoord;
-	a_color.rgb = max(a_color.rgb, u_skyLightColor.rgb*decomp_light.a);
+
+	vec3 skyLightColor = texture(u_cubemap, vec3(-0.4f, -0.4f, -0.4f)).rgb;
+	skyLightColor.g *= 0.9;
+	skyLightColor.b *= 0.8;
+	skyLightColor = min(vec3(1.0), skyLightColor*SKY_LIGHT_MUL);
+	
+	a_color.rgb = max(a_color.rgb, skyLightColor.rgb*decomp_light.a);
 	a_distance = length(viewmodelpos);
 	gl_Position = u_proj * viewmodelpos;
 }