blooooom

assets/shaders/ripple.fs

@@ -1,15 +1,3 @@
-// void mainImage( out vec4 fragColor, in vec2 fragCoord )
-// {
-    
-//     vec2 uv = fragCoord.xy / iResolution.xy;
-    
-//     float X = uv.x*25.+iTime;
-//     float Y = uv.y*25.+iTime;
-//     uv.y += cos(X+Y)*0.01*cos(Y);
-//     uv.x += sin(X-Y)*0.01*sin(Y);
-	
-//     fragColor = texture(iChannel0,uv);
-// }
 #version 330
 
 // Input vertex attributes (from vertex shader)
@@ -25,14 +13,86 @@ out vec4 finalColor;
 
 // NOTE: Add here your custom variables
 
+const vec2 size = vec2(1080, 720);   // render size
+const float samples = 5.0;          // pixels per axis; higher = bigger glow, worse performance
+const float quality = 1.5;             // lower = smaller glow, better quality
+
 void main()
 {
+    vec4 sum = vec4(0);
+    vec2 sizeFactor = vec2(1)/size*quality;
+
     // Texel color fetching from texture sampler
-    vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
-    
-    // Convert texel color to grayscale using NTSC conversion weights
-    float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
-    
+    vec4 source = texture(texture0, fragTexCoord);
+
+    const int range = 2;            // should be = (samples - 1)/2;
+
+    for (int x = -range; x <= range; x++)
+    {
+        for (int y = -range; y <= range; y++)
+        {
+            sum += texture(texture0, fragTexCoord + vec2(x, y)*sizeFactor);
+        }
+    }
+
     // Calculate final fragment color
-    finalColor = vec4(gray, gray, gray, texelColor.a);
-}
+    finalColor = ((sum/(samples*samples)) + source)*colDiffuse;
+}
+
+// #version 330
+
+// // Input vertex attributes (from vertex shader)
+// in vec2 fragCoord;
+// out vec4 fragColor;
+
+// vec2      resolution = vec2(1080.0, 720.0);           // viewport resolution (in pixels)
+// uniform float     time = 0.0;                 // shader playback time (in seconds)
+// // uniform float     iTimeDelta;            // render time (in seconds)
+// // uniform int       iFrame;                // shader playback frame
+// // uniform float     iChannelTime[4];       // channel playback time (in seconds)
+// // uniform vec3      iChannelResolution[4]; // channel resolution (in pixels)
+// // uniform vec4      iMouse;                // mouse pixel coords. xy: current (if MLB down), zw: click
+// uniform sampler2D texture0;          // input channel. XX = 2D/Cube
+// // uniform vec4      iDate;                 // (year, month, day, time in seconds)
+// // uniform float     iSampleRate;           // sound sample rate (i.e., 44100)
+
+
+
+// void main()
+// {
+    
+//     vec2 uv = fragCoord.xy / vec2(1080.0, 720.0);
+    
+//     float X = uv.x*25.+time;
+//     float Y = uv.y*25.+time;
+//     uv.y += cos(X+Y)*0.01*cos(Y);
+//     uv.x += sin(X-Y)*0.01*sin(Y);
+	
+//     fragColor = texture(texture0,uv);
+// }
+// // #version 330
+
+// // // Input vertex attributes (from vertex shader)
+// // in vec2 fragTexCoord;
+// // in vec4 fragColor;
+
+// // // Input uniform values
+// // uniform sampler2D texture0;
+// // uniform vec4 colDiffuse;
+
+// // // Output fragment color
+// // out vec4 finalColor;
+
+// // // NOTE: Add here your custom variables
+
+// // void main()
+// // {
+// //     // Texel color fetching from texture sampler
+// //     vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
+    
+// //     // Convert texel color to grayscale using NTSC conversion weights
+// //     float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
+    
+// //     // Calculate final fragment color
+// //     finalColor = vec4(gray, gray, gray, texelColor.a);
+// // }