dev: better RTInspector

src/entities/RTInspector.ts

@@ -2,8 +2,14 @@ import { Entity } from '../heck/Entity';
 import { RenderTarget } from '../heck/RenderTarget';
 import { BufferRenderTarget } from '../heck/BufferRenderTarget';
 import { RTINSPECTOR_CAPTURE_INDEX, RTINSPECTOR_CAPTURE_NAME, RTINSPECTOR_MULTIPLE } from '../config-hot';
-import { gl } from '../globals/canvas';
+import quadVert from '../shaders/quad.vert';
+import inspectorFrag from '../shaders/inspector.frag';
+import { canvas, gl } from '../globals/canvas';
 import { Blit } from '../heck/components/Blit';
+import { Material } from '../heck/Material';
+import { dummyRenderTarget } from '../globals/dummyRenderTarget';
+import { quadGeometry } from '../globals/quadGeometry';
+import { Quad } from '../heck/components/Quad';
 
 export interface RTInspectorOptions {
   target: RenderTarget;
@@ -12,7 +18,8 @@ export interface RTInspectorOptions {
 export class RTInspector extends Entity {
   public entitySingle: Entity;
   public entityMultiple: Entity;
-  public blitSingle: Blit;
+  public materialSingle: Material;
+  public quadSingle: Quad;
   public blitsMultiple: Blit[];
 
   public constructor( options: RTInspectorOptions ) {
@@ -22,12 +29,28 @@ export class RTInspector extends Entity {
     this.entitySingle = new Entity();
     this.children.push( this.entitySingle );
 
-    this.blitSingle = new Blit( {
-      dst: options.target,
-      name: process.env.DEV && 'RTInspector/blitSingle',
+    this.materialSingle = new Material(
+      quadVert,
+      inspectorFrag,
+      { initOptions: { target: dummyRenderTarget, geometry: quadGeometry } },
+    );
+
+    this.quadSingle = new Quad( {
+      target: options.target,
+      material: this.materialSingle,
+      name: `RTInspector/quadSingle`,
       ignoreBreakpoints: true,
     } );
-    this.entitySingle.components.push( this.blitSingle );
+    this.entitySingle.components.push( this.quadSingle );
+
+    // -- mouse listener ---------------------------------------------------------------------------
+    canvas.addEventListener( 'mousemove', ( { offsetX, offsetY } ) => {
+      const rect = canvas.getBoundingClientRect();
+      const x = offsetX / rect.width;
+      const y = 1.0 - offsetY / rect.height;
+
+      this.materialSingle.addUniform( 'mouse', '2f', x, y );
+    } );
 
     // -- multiple ---------------------------------------------------------------------------------
     this.entityMultiple = new Entity();
@@ -106,8 +129,9 @@ export class RTInspector extends Entity {
         return;
       }
 
-      this.blitSingle.src = target;
-      this.blitSingle.attachment = attachment;
+      const texture = target.getTexture( attachment );
+      this.materialSingle.addUniformTexture( 'sampler0', texture );
+
       this.entitySingle.active = true;
     } else {
       // fallback to not render it

src/shaders/inspector.frag

@@ -0,0 +1,122 @@
+#version 300 es
+
+precision highp float;
+
+const float RADIUS = 40.0;
+const vec3 CIRCLE_COLOR = vec3( 1.0, 1.0, 1.0 );
+
+in vec2 vUv;
+
+out vec4 fragColor;
+
+uniform vec2 resolution;
+uniform vec2 mouse;
+uniform sampler2D sampler0;
+
+bool print( in vec2 _coord, float _in ) {
+  vec2 coord = _coord;
+
+  // vertical restriction
+  if ( coord.y <= 0.0 || 5.0 <= coord.y ) { return false; }
+
+  // dot
+  if ( 0.0 < coord.x && coord.x < 2.0 ) {
+    return coord.x < 1.0 && coord.y < 1.0;
+  }
+
+  // padded by dot
+  if ( 2.0 < coord.x ) { coord.x -= 2.0; }
+
+  // determine digit
+  float ci = floor( coord.x / 5.0 ) + 1.0;
+
+  // too low / too high
+  if ( 4.0 < ci ) { return false; }
+  if ( ci < -4.0 ) { return false; }
+
+  // x of char
+  float cfx = floor( mod( coord.x, 5.0 ) );
+
+  // width is 4
+  if ( 4.0 == cfx ) { return false; }
+
+  // y of char
+  float cfy = floor( coord.y );
+
+  // bit of char
+  float cf = cfx + 4.0 * cfy;
+
+  // determine char
+  float num = 0.0;
+  if ( 0.0 < ci ) {
+    float n = abs( _in );
+    for ( int i = 0; i < 6; i ++ ) {
+      if ( ci < float( i ) ) { break; }
+
+      num = mod( floor( n ), 10.0 );
+      n -= num;
+      n *= 10.0;
+    }
+  } else {
+    float n = abs( _in );
+    for ( int i = 0; i < 6; i ++ ) {
+      if ( -ci < float( i ) ) { break; }
+
+      if ( ci != 0.0 && n < 1.0 ) {
+        // minus
+        return float( i ) == -ci && _in < 0.0 && cfy == 2.0 && 0.0 < cfx;
+      }
+      num = mod( floor( n ), 10.0 );
+      n -= num;
+      n /= 10.0;
+    }
+  }
+
+  bool a;
+  a = 1.0 == mod( floor( (
+    num == 0.0 ? 432534.0 :
+    num == 1.0 ? 410692.0 :
+    num == 2.0 ? 493087.0 :
+    num == 3.0 ? 493191.0 :
+    num == 4.0 ? 630408.0 :
+    num == 5.0 ? 989063.0 :
+    num == 6.0 ? 399254.0 :
+    num == 7.0 ? 1016898.0 :
+    num == 8.0 ? 431766.0 :
+    433798.0
+  ) / pow( 2.0, cf ) ), 2.0 );
+
+  return a ? true : false;
+}
+
+void main() {
+  vec2 uv = vUv;
+  vec2 coord = vUv * resolution;
+
+  vec2 center = floor( mouse * resolution + vec2( 1.0, 0.7 ) * RADIUS );
+  float circle = length( coord.xy - center ) - RADIUS;
+
+  vec4 col = texture( sampler0, uv );
+  vec4 mcol = texture( sampler0, mouse );
+  float mcolb = dot( mcol.rgb, vec3( 0.299, 0.587, 0.114 ) );
+  vec4 bcol = vec4( vec3( step( mcolb, 0.5 ) ), 1.0 );
+
+  col = mix(
+    col,
+    mix(
+      bcol,
+      mcol,
+      smoothstep( 1.0, 0.0, circle + 5.0 )
+    ),
+    smoothstep( 1.0, 0.0, circle )
+  );
+
+  if ( circle < 0.0 ) {
+    col = print( coord.xy - center - vec2( 0.0, 8.0 ), mcol.x ) ? bcol : col;
+    col = print( coord.xy - center - vec2( 0.0, 0.0 ), mcol.y ) ? bcol : col;
+    col = print( coord.xy - center - vec2( 0.0, -8.0 ), mcol.z ) ? bcol : col;
+    col = print( coord.xy - center - vec2( 0.0, -16.0 ), mcol.w ) ? bcol : col;
+  }
+
+  fragColor = col;
+}