add directional light component and skylight component, add PCSS and hard shadow

Editor/assets/shaders/BloomBlur.glsl

@@ -0,0 +1,79 @@
+#type vertex
+#version 430
+
+layout(location = 0) in vec3 a_Position;
+layout(location = 1) in vec2 a_TexCoord;
+
+out vec2 v_TexCoord;
+
+void main()
+{
+    vec4 position = vec4(a_Position.xy, 0.0, 1.0);
+    v_TexCoord = a_TexCoord;
+    gl_Position = position;
+}
+
+#type fragment
+#version 430
+
+layout(location = 0) out vec4 o_Color;
+
+in vec2 v_TexCoord;
+
+uniform sampler2D u_Texture;
+uniform bool u_Horizontal;
+
+void main()
+{
+#if 1
+    // From learnopengl.com
+    float weight[5] = float[] (0.227027, 0.1945946, 0.1216216, 0.054054, 0.016216);
+
+    vec2 tex_offset = 1.0 / textureSize(u_Texture, 0); // gets size of single texel
+    vec3 result = texture(u_Texture, v_TexCoord).rgb * weight[0]; // current fragment's contribution
+    if (u_Horizontal)
+    {
+        for(int i = 1; i < 5; ++i)
+        {
+            result += texture(u_Texture, v_TexCoord + vec2(tex_offset.x * i, 0.0)).rgb * weight[i];
+            result += texture(u_Texture, v_TexCoord - vec2(tex_offset.x * i, 0.0)).rgb * weight[i];
+        }
+    }
+    else
+    {
+        for(int i = 1; i < 5; ++i)
+        {
+            result += texture(u_Texture, v_TexCoord + vec2(0.0, tex_offset.y * i)).rgb * weight[i];
+            result += texture(u_Texture, v_TexCoord - vec2(0.0, tex_offset.y * i)).rgb * weight[i];
+        }
+    }
+    o_Color = vec4(result, 1.0);
+#else
+    // From https://www.shadertoy.com/view/Xltfzj
+
+    float Pi = 6.28318530718; // Pi*2
+
+    // GAUSSIAN BLUR SETTINGS {{{
+    float Directions =32.0; // BLUR DIRECTIONS (Default 16.0 - More is better but slower)
+    float Quality = 6.0; // BLUR QUALITY (Default 4.0 - More is better but slower)
+    float Size = 16.0; // BLUR SIZE (Radius)
+    // GAUSSIAN BLUR SETTINGS }}}
+
+    vec2 Radius = Size/textureSize(u_Texture, 0);
+
+    vec3 result = texture(u_Texture, v_TexCoord).rgb;
+    vec2 uv = v_TexCoord;
+    // Blur calculations
+    for( float d=0.0; d<Pi; d+=Pi/Directions)
+    {
+        for(float i=1.0/Quality; i<=1.0; i+=1.0/Quality)
+        {
+            result += texture( u_Texture, uv+vec2(cos(d),sin(d))*Radius*i).rgb;
+        }
+    }
+
+    // Output to screen
+    result /= Quality * Directions - 15.0;
+    o_Color = vec4(result, 1.0);
+#endif
+}