Add blurring of lightmap (and refactoring)

shader/blur.frag

@@ -0,0 +1,38 @@
+#version 430 core
+in vec2 vTexPos;
+out vec4 fColor;
+
+uniform vec2 winSize;
+uniform sampler2D screenTexture;
+
+const float hOff = 1.0 / winSize.x;
+const float vOff = 1.0 / winSize.y;
+//const float verOff = 1.0 / 600.0;
+
+//const float kernel[9] = float[](
+//    0.025,0.05,0.1, 0.2, 0.25, 0.2,0.1, 0.05, 0.025
+//   0.1,0.1,0.1,0.1,0.2,0.1,0.1,0.1,0.1
+//    );
+const float kernel[5] = float[](
+         0.175,
+    0.175,0.3,0.175,
+         0.175
+    );
+const float off[5] = float[](
+         vOff,
+    -hOff,0.0,hOff,
+         -vOff
+    );
+
+void main()
+{
+    vec4 sampleTex[5];
+    for(int i=0; i<5; i++)
+    {
+        sampleTex[i] = vec4(texture(screenTexture, vTexPos + off[i]));
+    }
+    vec4 col = vec4(0,0,0,0);
+    for (int i = 0; i < 5; i++)
+        col += sampleTex[i] * kernel[i];
+    fColor = col;
+}

shader/boxBlur.frag

@@ -0,0 +1,34 @@
+#version 430 core
+in vec2 vTexPos;
+out vec4 fColor;
+
+uniform vec2 winSize;
+uniform sampler2D screenTexture;
+
+const float hOff = 2.0 / 600;
+const float vOff = 2.0 / 600;
+const float frac = 1.0 / 9;
+const vec2 off[9] = vec2[](
+      vec2( vOff,hOff )
+    , vec2( vOff,0.0 )
+    , vec2( vOff,-hOff )
+    , vec2( 0.0,hOff )
+    , vec2( 0.0,0.0 )
+    , vec2( 0.0,-hOff )
+    , vec2( -vOff,hOff )
+    , vec2( -vOff,0.0 )
+    , vec2( -vOff,-hOff )
+    );
+
+void main()
+{
+    vec4 sampleTex[9];
+    for(int i=0; i<9; i++)
+    {
+        sampleTex[i] = vec4(texture(screenTexture, vTexPos + off[i]));
+    }
+    vec4 col = vec4(0,0,0,0);
+    for (int i = 0; i < 9; i++)
+        col += sampleTex[i] * frac;
+    fColor = col;
+}

shader/boxBlur.vert

@@ -0,0 +1,10 @@
+#version 430 core
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 texPos;
+out vec2 vTexPos;
+
+void main()
+{
+  gl_Position = vec4(pos,0,1);
+  vTexPos = texPos;
+}

shader/fullscreen.frag

@@ -6,11 +6,5 @@ uniform sampler2D screenTexture;
 
 void main()
 {
-//    vec4 col = vec4(0,0,0,0);
-//    for (int i = 0; i < 9; i++)
-//    {
-//        col += 
-//    }
     fColor = texture(screenTexture, vTexPos);
-//    fColor = vec4(1,1,1,0);
 }

shader/horizontalBlur.frag

@@ -0,0 +1,30 @@
+#version 430 core
+in vec2 vTexPos;
+out vec4 fColor;
+
+uniform vec2 winSize;
+uniform sampler2D screenTexture;
+
+const float horOff = 1.0 / winSize.x;
+//const float verOff = 1.0 / 600.0;
+
+//const float kernel[9] = float[](
+//    0.025,0.05,0.1, 0.2, 0.25, 0.2,0.1, 0.05, 0.025
+//   0.1,0.1,0.1,0.1,0.2,0.1,0.1,0.1,0.1
+//    );
+const float kernel[3] = float[](
+    0.25,0.5, 0.25
+    );
+
+void main()
+{
+    vec4 sampleTex[3];
+    for(int i=0; i<3; i++)
+    {
+        sampleTex[i] = vec4(texture(screenTexture, vTexPos + vec2((i-1)*horOff,0)));
+    }
+    vec4 col = vec4(0,0,0,0);
+    for (int i = 0; i < 3; i++)
+        col += sampleTex[i] * kernel[i];
+    fColor = col;
+}