JBlackCat · March 30, 2017 18:07 · Mar 30, 2017 · Mar 30, 2017 · Mar 29, 2017
diff --git a/fragment-sharder-start.glsl b/fragment-sharder-start.glsl
@@ -1,66 +1,57 @@
+//uniform vec2 resolution;
+
 #define PI 3.14159265359
 
-  //Anti-aliased coordinate system grid
-  float coordinateGrid(vec2 coords) {
-    vec3 axesColor = vec3(0.0, 0.0, 1.0);
-    float axesThickness = 0.015;
-
-    vec3 gridColor = vec3(0.5);
-    float gridThickness = 0.008;
-
-    float retrn = 0.0; //
-
-    //Draw grid lines
-    const float tickWidth = 0.1;
-    for(float i=-2.0; i<2.0; i+=tickWidth) {
-      // "i" is the line coordinate.
-      retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.x - i));
-      retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.y - i));
-    }
-
-    //Draw the axes
-    retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.x));
-    retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.y));
-
-    return retrn;
+//Anti-aliased coordinate system grid
+float coordinateGrid(vec2 coords) {
+  //These colors are unused and irrelevant in current implementation.
+  vec3 axesColor = vec3(0.0, 0.0, 1.0);
+  float axesThickness = 0.015;
+
+  vec3 gridColor = vec3(0.5);
+  float gridThickness = 0.008;
+
+  float retrn = 0.0; //
+
+  //Draw grid lines
+  const float tickWidth = 0.1;
+  for(float i=-2.0; i<2.0; i+=tickWidth) {
+    // "i" is the line coordinate.
+    retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.x - i));
+    retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.y - i));
   }
 
+  //Draw the axes
+  retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.x));
+  retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.y));
+
+  return retrn;
+}
+
 //returns 1.0 if inside circle
 float circle(vec2 coords, vec2 center, float radius) {
   	float antiAliasTolerance = 0.005;
 	return 1.0 - smoothstep(radius - antiAliasTolerance, radius + antiAliasTolerance, length(coords - center));
 }
 
-//returns 1.0 if inside rectangle
-float rectangle(vec2 r, vec2 topLeft, vec2 bottomRight) {
-	float ret;
-	float d = 0.005;
-	ret = smoothstep(topLeft.x-d, topLeft.x+d, r.x);
-	ret *= smoothstep(topLeft.y-d, topLeft.y+d, r.y);
-	ret *= 1.0 - smoothstep(bottomRight.y-d, bottomRight.y+d, r.y);
-	ret *= 1.0 - smoothstep(bottomRight.x-d, bottomRight.x+d, r.x);
-	return ret;
-}
+void main() {
 
-void main(){
-  vec2 p = vec2(gl_FragCoord.xy / resolution.xy);
-  vec2 r = (vec2(gl_FragCoord.xy - 0.5*resolution.xy)*2.0)/resolution.y;
-  float xMax = resolution.x / resolution.y;
-
-  vec3 bgCol = vec3(1.0);
-  vec3 col1 = vec3(0.216, 0.471, 0.698); //blue
-  vec3 col2 = vec3(1.00, 0.329, 0.298); //yellow
-  vec3 col3 = vec3(0.867, 0.910, 0.247); //red
+	vec2 defaultCoords = vec2(gl_FragCoord.xy/resolution.xy);
+	vec2 viewportCenterCoords = 2.0 * vec2(gl_FragCoord.xy - resolution.xy/2.0) / resolution.y;
+
+  	vec3 colorOut;
+
+  // --------------------------------------
+  // ------------- Start ------------------
 
-  vec3 retrn = bgCol;
-  // --------------------------------
-  // --------------------------------
+  	   // Fancy Code Here
 
-
+  // -------------  End  ------------------
+  // --------------------------------------
 
+  vec3 gridColor = vec3(0.0, 0.634, 0.876);
+  colorOut = mix(colorOut, gridColor, coordinateGrid(viewportCenterCoords));
 
-  // --------------------------------
-  // --------------------------------
-  vec3 pixel = retrn;
+  vec3 pixel = colorOut;
   gl_FragColor = vec4(pixel, 1.0);
 }
diff --git a/fragment-sharder-start.glsl b/fragment-sharder-start.glsl
@@ -8,7 +8,7 @@
     vec3 gridColor = vec3(0.5);
     float gridThickness = 0.008;
 
-    float retrn = 0.0; // What is this returning?
+    float retrn = 0.0; //
 
     //Draw grid lines
     const float tickWidth = 0.1;
@@ -19,8 +19,8 @@
     }
 
     //Draw the axes
-    retrn += 1.0 - smoothstep(0.001, 0.015, abs(coords.x));
-    retrn += 1.0 - smoothstep(0.001, 0.015, abs(coords.y));
+    retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.x));
+    retrn += 1.0 - smoothstep(0.001, axesThickness, abs(coords.y));
 
     return retrn;
   }

diff --git a/fragment-sharder-start.glsl b/fragment-sharder-start.glsl
@@ -0,0 +1,66 @@
+#define PI 3.14159265359
+
+  //Anti-aliased coordinate system grid
+  float coordinateGrid(vec2 coords) {
+    vec3 axesColor = vec3(0.0, 0.0, 1.0);
+    float axesThickness = 0.015;
+
+    vec3 gridColor = vec3(0.5);
+    float gridThickness = 0.008;
+
+    float retrn = 0.0; // What is this returning?
+
+    //Draw grid lines
+    const float tickWidth = 0.1;
+    for(float i=-2.0; i<2.0; i+=tickWidth) {
+      // "i" is the line coordinate.
+      retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.x - i));
+      retrn += 1.0 - smoothstep(0.0, gridThickness, abs(coords.y - i));
+    }
+
+    //Draw the axes
+    retrn += 1.0 - smoothstep(0.001, 0.015, abs(coords.x));
+    retrn += 1.0 - smoothstep(0.001, 0.015, abs(coords.y));
+
+    return retrn;
+  }
+
+//returns 1.0 if inside circle
+float circle(vec2 coords, vec2 center, float radius) {
+  	float antiAliasTolerance = 0.005;
+	return 1.0 - smoothstep(radius - antiAliasTolerance, radius + antiAliasTolerance, length(coords - center));
+}
+
+//returns 1.0 if inside rectangle
+float rectangle(vec2 r, vec2 topLeft, vec2 bottomRight) {
+	float ret;
+	float d = 0.005;
+	ret = smoothstep(topLeft.x-d, topLeft.x+d, r.x);
+	ret *= smoothstep(topLeft.y-d, topLeft.y+d, r.y);
+	ret *= 1.0 - smoothstep(bottomRight.y-d, bottomRight.y+d, r.y);
+	ret *= 1.0 - smoothstep(bottomRight.x-d, bottomRight.x+d, r.x);
+	return ret;
+}
+
+void main(){
+  vec2 p = vec2(gl_FragCoord.xy / resolution.xy);
+  vec2 r = (vec2(gl_FragCoord.xy - 0.5*resolution.xy)*2.0)/resolution.y;
+  float xMax = resolution.x / resolution.y;
+
+  vec3 bgCol = vec3(1.0);
+  vec3 col1 = vec3(0.216, 0.471, 0.698); //blue
+  vec3 col2 = vec3(1.00, 0.329, 0.298); //yellow
+  vec3 col3 = vec3(0.867, 0.910, 0.247); //red
+
+  vec3 retrn = bgCol;
+  // --------------------------------
+  // --------------------------------
+
+
+
+
+  // --------------------------------
+  // --------------------------------
+  vec3 pixel = retrn;
+  gl_FragColor = vec4(pixel, 1.0);
+}