sample testailuja

shader.glsl

@@ -9,6 +9,12 @@ struct Ray {
     vec3 dir;    
 };
 
+vec2 getUV(vec2 offset) {
+    vec2 uv =  2.0 *((gl_FragCoord.xy + offset*0.5)/u_resolution.xy - 0.5);
+    uv.x *= u_resolution.x/u_resolution.y; // Correct for aspect ratio
+    return uv;   
+}
+
 mat2 scale(vec2 scale){
     return mat2(1. / scale.x, 0.0, 0.0, 1./scale.y);
 }
@@ -617,8 +623,20 @@ float sdCog2d(vec2 pos) {
 float sdCog(vec3 pos, float angle) {        
     pos.xy *= Rot(angle);    
     float d1 = opExtrusion(pos, sdCog2d(pos.xy), 0.05);    
-    float d2 = fCapsule(pos, vec3(0., 0.0, 0.), vec3(0., 0., 1.), 0.2);    
-    return 0.8 * fOpDifferenceRound(d1,d2,0.05)-0.003;}
+    float d2 = fCapsule(pos, vec3(0., 0.0, 0.), vec3(0., 0., 1.), 0.2);
+    return 0.8 * fOpDifferenceRound(d1,d2,0.05)-0.003;
+}
+
+float sdText(vec3 pos, float angle) {        
+    //pos.xy *= Rot(angle);    
+    vec3 color = texture2D(texts, getUV(vec2(  0.,0.))).rgb;
+
+    //gl_FragColor = vec4(vec3(color), 1.);
+
+    //float d1 = opExtrusion(pos, , 0.1);    
+    return 0.;
+//    return d1;
+}
 
 
 float sdHex(vec3 pos, float i, float angle) {                   
@@ -655,10 +673,11 @@ vec2 mapScene(in vec3 p) {
         if (d == a) mat = 1. + mod(i,3.);
     }
 
-    /*float c2 = sdCog(p, u_time);
-    d = min(d, c2);
-    if ( d == c2) mat = 4.;
-*/
+
+    //float c2 = sdText(p, u_time);
+    //d = min(d, c2);
+    //if ( d == c2) mat = 4.;
+
   //  float c3 = fBox(p+vec3(0.5, .87, 0.), vec3(1., 1.,1.));    
   //  d = min(d, c3);
    
@@ -963,11 +982,7 @@ vec3 render(vec2 uv) {
 
     return col;
 }
-vec2 getUV(vec2 offset) {
-    vec2 uv =  2.0 *((gl_FragCoord.xy + offset*0.5)/u_resolution.xy - 0.5);
-    uv.x *= u_resolution.x/u_resolution.y; // Correct for aspect ratio
-    return uv;   
-}
+
 
 void main()
 {