[add]: add bloom and blur

2 files changed, 76 insertions, 5 deletions

diff --git a/Assets/Shaders/Blur.glsl b/Assets/Shaders/Blur.glsl
new file mode 100644
index 0000000..984f0ba
--- /dev/null
+++ b/Assets/Shaders/Blur.glsl
@@ -0,0 +1,60 @@
+#type vertex
+
+#version 330 core
+
+layout (location = 0) in vec2 a_Pos;
+layout (location = 1) in vec2 a_TexCoord;
+
+out vec2 v_TexCoord;
+
+void main() 
+{
+    gl_Position = vec4(a_Pos, 0.0, 1.0);
+    v_TexCoord  = a_TexCoord;
+}
+
+#type fragment
+
+#version 330 core
+
+in  vec2 v_TexCoord;
+out vec4 o_FragColor;
+
+uniform sampler2D u_ScreenTexture;
+uniform vec2      u_Resolution;
+uniform float     u_BlurStrength;
+uniform float     u_GlowIntensity;
+
+void main() 
+{
+    vec2 texelSize = 1.0 / u_Resolution;
+    vec4 centerColor = texture(u_ScreenTexture, v_TexCoord);
+    
+    float brightness = (centerColor.r + centerColor.g + centerColor.b) / 3.0;
+    float glowMask   = smoothstep(0.05, 0.3, brightness);
+    
+    vec4 blurredColor = vec4(0.0);
+    float totalWeight = 0.0;
+    
+    for (int x = -8; x <= 8; x++) 
+    {
+        for (int y = -8; y <= 8; y++) 
+        {
+            vec2 offset = vec2(x, y) * texelSize * u_BlurStrength;
+            vec4 sampleColor = texture(u_ScreenTexture, v_TexCoord + offset);
+            
+            float weight = exp(-(x*x + y*y) / (2.0 * 8.0 * 8.0));
+            blurredColor += sampleColor * weight;
+            totalWeight += weight;
+        }
+    }
+    
+    blurredColor /= totalWeight;
+    
+    vec3 emissionColor = vec3(1.0, 0.8, 0.6);
+    vec3 glowColor     = emissionColor * glowMask * u_GlowIntensity * 2.0;
+    vec3 auraColor     = blurredColor.rgb * glowMask * u_GlowIntensity * 0.8;
+    vec3 finalColor    = centerColor.rgb + glowColor + auraColor;
+    
+    o_FragColor = vec4(finalColor, centerColor.a);
+}
diff --git a/Assets/Shaders/Geodesic.glsl b/Assets/Shaders/Geodesic.glsl
index ace58a5..1799601 100644
--- a/Assets/Shaders/Geodesic.glsl
+++ b/Assets/Shaders/Geodesic.glsl
@@ -323,7 +323,11 @@ vec4 SampleDiskColor(vec3 pos)
     float brightness_medium = fbm(rotated_brightness_pos * 5.0, 2);
     float brightness_small = fbm(rotated_brightness_pos * 7.0, 2);
     float brightness_noise = (brightness_large * 0.6 + brightness_medium * 0.3 + brightness_small * 0.1);
-    float brightness = 1.0 + density * 1.0 + brightness_noise * 0.4;
+    
+    // Enhanced brightness with glow effect
+    float baseBrightness = 1.0 + density * 1.5; // Increased density contribution
+    float glowBrightness = brightness_noise * 0.8; // Enhanced noise contribution
+    float brightness = baseBrightness + glowBrightness;
     
     return vec4(baseColor * brightness, density);
 }
@@ -413,14 +417,21 @@ void main()
             vec3 diskColor = diskSample.rgb;
             
             float stepLength = currentStepSize * 1e-8;
-            float absorption = density * stepLength * 1.2;
-            float scattering = density * stepLength * 0.8;
+            
+            float absorption = density * stepLength * 0.8;
+            float scattering = density * stepLength * 1.5;
             float extinction = absorption + scattering;
             
             float stepTransmittance = exp(-extinction);
             
-            vec3 emission = diskColor * density * stepLength * 2.5 * sqrt(disk_density);
-            accumulatedColor.rgb += emission * transmittance;
+            vec3 emission = diskColor * density * stepLength * 4.0 * sqrt(disk_density);
+            
+            vec3 glowColor       = mix(diskColor, vec3(1.0, 0.8, 0.6), 0.3);
+            float glowIntensity  = density * stepLength * 2.0;
+            vec3 atmosphericGlow = glowColor * glowIntensity * 0.8;
+            
+            vec3 totalEmission = emission + atmosphericGlow;
+            accumulatedColor.rgb += totalEmission * transmittance;
             
             transmittance *= stepTransmittance;